检索结果-内蒙古大学图书馆

Study of B−→DK−π+π− and B−→Dπ−π+π− decays and determination of the CKM angle γ

Physical Review D 2015年第11期92卷 112005-112005页

作者： R. Aaij B. Adeva M. Adinolfi A. Affolder Z. Ajaltouni S. Akar J. Albrecht F. Alessio M. Alexander S. Ali G. Alkhazov P. Alvarez Cartelle A. A. Alves, Jr. S. Amato S. Amerio Y. Amhis L. An L. Anderlini J. Anderson M. Andreotti J. E. Andrews R. B. Appleby O. Aquines Gutierrez F. Archilli P. d’Argent A. Artamonov M. Artuso E. Aslanides G. Auriemma M. Baalouch S. Bachmann J. J. Back A. Badalov C. Baesso W. Baldini R. J. Barlow C. Barschel S. Barsuk W. Barter V. Batozskaya V. Battista A. Bay L. Beaucourt J. Beddow F. Bedeschi I. Bediaga L. J. Bel I. Belyaev E. Ben-Haim G. Bencivenni S. Benson J. Benton A. Berezhnoy R. Bernet A. Bertolin M.-O. Bettler M. van Beuzekom A. Bien S. Bifani T. Bird A. Birnkraut A. Bizzeti T. Blake F. Blanc J. Blouw S. Blusk V. Bocci A. Bondar N. Bondar W. Bonivento S. Borghi M. Borsato T. J. V. Bowcock E. Bowen C. Bozzi S. Braun D. Brett M. Britsch T. Britton J. Brodzicka N. H. Brook A. Bursche J. Buytaert S. Cadeddu R. Calabrese M. Calvi M. Calvo Gomez P. Campana D. Campora Perez L. Capriotti A. Carbone G. Carboni R. Cardinale A. Cardini P. Carniti L. Carson K. Carvalho Akiba R. Casanova Mohr G. Casse L. Cassina L. Castillo Garcia M. Cattaneo Ch. Cauet G. Cavallero R. Cenci M. Charles Ph. Charpentier M. Chefdeville S. Chen S.-F. Cheung N. Chiapolini M. Chrzaszcz X. Cid Vidal G. Ciezarek P. E. L. Clarke M. Clemencic H. V. Cliff J. Closier V. Coco J. Cogan E. Cogneras V. Cogoni L. Cojocariu G. Collazuol P. Collins A. Comerma-Montells A. Contu A. Cook M. Coombes S. Coquereau G. Corti M. Corvo B. Couturier G. A. Cowan D. C. Craik A. Crocombe M. Cruz Torres S. Cunliffe R. Currie C. D’Ambrosio J. Dalseno P. N. Y. David A. Davis K. De Bruyn S. De Capua M. De Cian J. M. De Miranda L. De Paula W. De Silva P. De Simone C.-T. Dean D. Decamp M. Deckenhoff L. Del Buono N. Déléage D. Derkach O. Deschamps F. Dettori B. Dey A. Di Canto F. Di Ruscio H. Dijkstra S. Donleavy F. Dordei M. Dorigo A. Dosil Suárez D. Dossett A. Dovbnya K. Dreimanis L. Dufour G. Dujany F. Dupertuis P. Durante R. Dzhelyadin A. Dziu European Organization for Nuclear Research (CERN) Geneva Switzerland Universidad de Santiago de Compostela Santiago de Compostela Spain H.H. Wills Physics Laboratory University of Bristol Bristol United Kingdom Oliver Lodge Laboratory University of Liverpool Liverpool United Kingdom Clermont Université Université Blaise Pascal CNRS/IN2P3 LPC Clermont-Ferrand France CPPM Aix-Marseille Université CNRS/IN2P3 Marseille France Fakultät Physik Technische Universität Dortmund Dortmund Germany School of Physics and Astronomy University of Glasgow Glasgow United Kingdom Nikhef National Institute for Subatomic Physics Amsterdam The Netherlands Petersburg Nuclear Physics Institute (PNPI) Gatchina Russia Imperial College London London United Kingdom University of Cincinnati Cincinnati Ohio USA Universidade Federal do Rio de Janeiro (UFRJ) Rio de Janeiro Brazil Sezione INFN di Padova Padova Italy LAL Université Paris-Sud CNRS/IN2P3 Orsay France Center for High Energy Physics Tsinghua University Beijing China Sezione INFN di Firenze Firenze Italy Physik-Institut Universität Zürich Zürich Switzerland Sezione INFN di Ferrara Ferrara Italy University of Maryland College Park Maryland USA School of Physics and Astronomy University of Manchester Manchester United Kingdom Max-Planck-Institut für Kernphysik (MPIK) Heidelberg Germany Physikalisches Institut Ruprecht-Karls-Universität Heidelberg Heidelberg Germany Institute for High Energy Physics (IHEP) Protvino Russia Syracuse University Syracuse New York USA Sezione INFN di Roma La Sapienza Roma Italy Department of Physics University of Warwick Coventry United Kingdom Universitat de Barcelona Barcelona Spain Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio) Rio de Janeiro Brazil (associated with Institution Universidade Federal do Rio de Janeiro (UFRJ) Rio de Janeiro Brazil) National Center for Nuclear Research (NCBJ) Warsaw Poland Ecole Polytechnique Fédérale de Lausanne (EPFL) Lausanne Sw

We report a study of the suppressed B−→DK−π+π− and favored B−→Dπ−π+π− decays, where the neutral D meson is detected through its decays to the K∓π± and CP -even K+K− and π+π− final states. The measurement is carried out using a proton-proton collision data sample collected by the LHCb experiment, corresponding to an integrated luminosity of 3.0 fb−1. We observe the first significant signals in the CP -even final states of the D meson for both the suppressed B−→DK−π+π− and favored B−→Dπ−π+π− modes, as well as in the doubly Cabibbo suppressed D→K+π− final state of the B−→Dπ−π+π− decay. Evidence for the suppressed decay B−→DK−π+π−, with D→K+π−, is also presented. From the observed yields in the B−→DK−π+π−, B−→Dπ−π+π− and their charge conjugate decay modes, the most probable value of the weak phase γ corresponds to γ=(74−19+20)°. This is one of the most precise single-measurement determinations of γ to date.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Study of W boson production in association with beauty and charm

引用

Physical Review D 2015年第5期92卷 052001-052001页

作者： R. Aaij B. Adeva M. Adinolfi A. Affolder Z. Ajaltouni S. Akar J. Albrecht F. Alessio M. Alexander S. Ali G. Alkhazov P. Alvarez Cartelle A. A. Alves, Jr. S. Amato S. Amerio Y. Amhis L. An L. Anderlini J. Anderson M. Andreotti J. E. Andrews R. B. Appleby O. Aquines Gutierrez F. Archilli P. d’Argent A. Artamonov M. Artuso E. Aslanides G. Auriemma M. Baalouch S. Bachmann J. J. Back A. Badalov C. Baesso W. Baldini R. J. Barlow C. Barschel S. Barsuk W. Barter V. Batozskaya V. Battista A. Bay L. Beaucourt J. Beddow F. Bedeschi I. Bediaga L. J. Bel I. Belyaev E. Ben-Haim G. Bencivenni S. Benson J. Benton A. Berezhnoy R. Bernet A. Bertolin M.-O. Bettler M. van Beuzekom A. Bien S. Bifani T. Bird A. Birnkraut A. Bizzeti T. Blake F. Blanc J. Blouw S. Blusk V. Bocci A. Bondar N. Bondar W. Bonivento S. Borghi M. Borsato T. J. V. Bowcock E. Bowen C. Bozzi S. Braun D. Brett M. Britsch T. Britton J. Brodzicka N. H. Brook A. Bursche J. Buytaert S. Cadeddu R. Calabrese M. Calvi M. Calvo Gomez P. Campana D. Campora Perez L. Capriotti A. Carbone G. Carboni R. Cardinale A. Cardini P. Carniti L. Carson K. Carvalho Akiba G. Casse L. Cassina L. Castillo Garcia M. Cattaneo Ch. Cauet G. Cavallero R. Cenci M. Charles Ph. Charpentier M. Chefdeville S. Chen S.-F. Cheung N. Chiapolini M. Chrzaszcz X. Cid Vidal G. Ciezarek P. E. L. Clarke M. Clemencic H. V. Cliff J. Closier V. Coco J. Cogan E. Cogneras V. Cogoni L. Cojocariu G. Collazuol P. Collins A. Comerma-Montells A. Contu A. Cook M. Coombes S. Coquereau G. Corti M. Corvo B. Couturier G. A. Cowan D. C. Craik A. Crocombe M. Cruz Torres S. Cunliffe R. Currie C. D’Ambrosio J. Dalseno P. N. Y. David A. Davis K. De Bruyn S. De Capua M. De Cian J. M. De Miranda L. De Paula W. De Silva P. De Simone C.-T. Dean D. Decamp M. Deckenhoff L. Del Buono N. Déléage M. Demmer D. Derkach O. Deschamps F. Dettori A. Di Canto F. Di Ruscio H. Dijkstra S. Donleavy F. Dordei M. Dorigo A. Dosil Suárez D. Dossett A. Dovbnya K. Dreimanis L. Dufour G. Dujany F. Dupertuis P. Durante R. Dzhelyadin A. Dziurda A. Dzyuba European Organization for Nuclear Research (CERN) Geneva Switzerland Universidad de Santiago de Compostela Santiago de Compostela Spain H.H. Wills Physics Laboratory University of Bristol Bristol United Kingdom Oliver Lodge Laboratory University of Liverpool Liverpool United Kingdom Clermont Université Université Blaise Pascal CNRS/IN2P3 LPC Clermont-Ferrand France CPPM Aix-Marseille Université CNRS/IN2P3 Marseille France Fakultät Physik Technische Universität Dortmund Dortmund Germany School of Physics and Astronomy University of Glasgow Glasgow United Kingdom Nikhef National Institute for Subatomic Physics Amsterdam The Netherlands Petersburg Nuclear Physics Institute (PNPI) Gatchina Russia Imperial College London London United Kingdom University of Cincinnati Cincinnati Ohio USA Universidade Federal do Rio de Janeiro (UFRJ) Rio de Janeiro Brazil Sezione INFN di Padova Padova Italy LAL Université Paris-Sud CNRS/IN2P3 Orsay France Center for High Energy Physics Tsinghua University Beijing China Sezione INFN di Firenze Firenze Italy Physik-Institut Universität Zürich Zürich Switzerland Sezione INFN di Ferrara Ferrara Italy University of Maryland College Park Mary Land USA School of Physics and Astronomy University of Manchester Manchester United Kingdom Max-Planck-Institut für Kernphysik (MPIK) Heidelberg Germany Physikalisches Institut Ruprecht-Karls-Universität Heidelberg Heidelberg Germany Institute for High Energy Physics (IHEP) Protvino Russia Syracuse University Syracuse New York USA Sezione INFN di Roma La Sapienza Roma Italy Department of Physics University of Warwick Coventry United Kingdom Universitat de Barcelona Barcelona Spain Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio) Rio de Janeiro Brazil (associated with Universidade Federal do Rio de Janeiro (UFRJ) Rio de Janeiro Brazil) National Center for Nuclear Research (NCBJ) Warsaw Poland Ecole Polytechnique Fédérale de Lausanne (EPFL) Lausanne Switzerland L

The associated production of a W boson with a jet originating from either a light parton or heavy-flavor quark is studied in the forward region using proton-proton collisions. The analysis uses data corresponding to integrated luminosities of 1.0 and 2.0 fb−1 collected with the LHCb detector at center-of-mass energies of 7 and 8 TeV, respectively. The W bosons are reconstructed using the W→μν decay and muons with a transverse momentum, pT, larger than 20 GeV in the pseudorapidity range 2.0<η<4.5. The partons are reconstructed as jets with pT>20 GeV and 2.2<η<4.2. The sum of the muon and jet momenta must satisfy pT>20 GeV. The fraction of W+jet events that originate from beauty and charm quarks is measured, along with the charge asymmetries of the W+b and W+c production cross sections. The ratio of the W+jet to Z+jet production cross sections is also measured using the Z→μμ decay. All results are in agreement with Standard Model predictions.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Quantum numbers of the X(3872) state and orbital angular momentum in its ρ0J/ψ decay

引用

Physical Review D 2015年第1期92卷 011102(R)-011102(R)页

作者： R. Aaij B. Adeva M. Adinolfi A. Affolder Z. Ajaltouni S. Akar J. Albrecht F. Alessio M. Alexander S. Ali G. Alkhazov P. Alvarez Cartelle A. A. Alves, Jr. S. Amato S. Amerio Y. Amhis L. An L. Anderlini J. Anderson M. Andreotti J. E. Andrews R. B. Appleby O. Aquines Gutierrez F. Archilli P. d’Argent A. Artamonov M. Artuso E. Aslanides G. Auriemma M. Baalouch S. Bachmann J. J. Back A. Badalov C. Baesso W. Baldini R. J. Barlow C. Barschel S. Barsuk W. Barter V. Batozskaya V. Battista A. Bay L. Beaucourt J. Beddow F. Bedeschi I. Bediaga L. J. Bel I. Belyaev E. Ben-Haim G. Bencivenni S. Benson J. Benton A. Berezhnoy R. Bernet A. Bertolin M.-O. Bettler M. van Beuzekom A. Bien S. Bifani T. Bird A. Birnkraut A. Bizzeti T. Blake F. Blanc J. Blouw S. Blusk V. Bocci A. Bondar N. Bondar W. Bonivento S. Borghi M. Borsato T. J. V. Bowcock E. Bowen C. Bozzi S. Braun D. Brett M. Britsch T. Britton J. Brodzicka N. H. Brook A. Bursche J. Buytaert S. Cadeddu R. Calabrese M. Calvi M. Calvo Gomez P. Campana D. Campora Perez L. Capriotti A. Carbone G. Carboni R. Cardinale A. Cardini P. Carniti L. Carson K. Carvalho Akiba R. Casanova Mohr G. Casse L. Cassina L. Castillo Garcia M. Cattaneo Ch. Cauet G. Cavallero R. Cenci M. Charles Ph. Charpentier M. Chefdeville S. Chen S.-F. Cheung N. Chiapolini M. Chrzaszcz X. Cid Vidal G. Ciezarek P. E. L. Clarke M. Clemencic H. V. Cliff J. Closier V. Coco J. Cogan E. Cogneras V. Cogoni L. Cojocariu G. Collazuol P. Collins A. Comerma-Montells A. Contu A. Cook M. Coombes S. Coquereau G. Corti M. Corvo B. Couturier G. A. Cowan D. C. Craik A. Crocombe M. Cruz Torres S. Cunliffe R. Currie C. D’Ambrosio J. Dalseno P. N. Y. David A. Davis K. De Bruyn S. De Capua M. De Cian J. M. De Miranda L. De Paula W. De Silva P. De Simone C.-T. Dean D. Decamp M. Deckenhoff L. Del Buono N. Déléage D. Derkach O. Deschamps F. Dettori B. Dey A. Di Canto F. Di Ruscio H. Dijkstra S. Donleavy F. Dordei M. Dorigo A. Dosil Suárez D. Dossett A. Dovbnya K. Dreimanis L. Dufour G. Dujany F. Dupertuis P. Durante R. Dzhelyadin A. Dziu European Organization for Nuclear Research (CERN) Geneva Switzerland Universidad de Santiago de Compostela Santiago de Compostela Spain H.H. Wills Physics Laboratory University of Bristol Bristol United Kingdom Oliver Lodge Laboratory University of Liverpool Liverpool United Kingdom Clermont Université Université Blaise Pascal CNRS/IN2P3 LPC Clermont-Ferrand France CPPM Aix-Marseille Université CNRS/IN2P3 Marseille France Fakultät Physik Technische Universität Dortmund Dortmund Germany School of Physics and Astronomy University of Glasgow Glasgow United Kingdom Nikhef National Institute for Subatomic Physics Amsterdam The Netherlands Petersburg Nuclear Physics Institute (PNPI) Gatchina Russia Imperial College London London United Kingdom University of Cincinnati Cincinnati OH United States Universidade Federal do Rio de Janeiro (UFRJ) Rio de Janeiro Brazil Sezione INFN di Padova Padova Italy LAL Université Paris-Sud CNRS/IN2P3 Orsay France Center for High Energy Physics Tsinghua University Beijing China Sezione INFN di Firenze Firenze Italy Physik-Institut Universität Zürich Zürich Switzerland Sezione INFN di Ferrara Ferrara Italy University of Maryland College Park MD United States School of Physics and Astronomy University of Manchester Manchester United Kingdom Max-Planck-Institut für Kernphysik (MPIK) Heidelberg Germany Physikalisches Institut Ruprecht-Karls-Universität Heidelberg Heidelberg Germany Institute for High Energy Physics (IHEP) Protvino Russia Syracuse University Syracuse NY United States Sezione INFN di Roma La Sapienza Roma Italy Department of Physics University of Warwick Coventry United Kingdom Universitat de Barcelona Barcelona Spain Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio) Rio de Janeiro Brazil (associated with Universidade Federal do Rio de Janeiro (UFRJ) Rio de Janeiro Brazil) National Center for Nuclear Research (NCBJ) Warsaw Poland Ecole Polytechnique Fédérale de Lausanne (EPFL) Lausanne

Angular correlations in B+→X(3872)K+ decays, with X(3872)→ρ0J/ψ, ρ0→π+π− and J/ψ→μ+μ−, are used to measure orbital angular momentum contributions and to determine the JPC value of the X(3872) meson. The data correspond to an integrated luminosity of 3.0 fb−1 of proton-proton collisions collected with the LHCb detector. This determination, for the first time performed without assuming a value for the orbital angular momentum, confirms the quantum numbers to be JPC=1++. The X(3872) is found to decay predominantly through an S wave and an upper limit of 4% at 95% C.L. is set on the D-wave contribution.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Amplitude analysis of B0→D¯0K+π− decays

引用

Physical Review D 2015年第1期92卷 012012-012012页

作者： R. Aaij B. Adeva M. Adinolfi A. Affolder Z. Ajaltouni S. Akar J. Albrecht F. Alessio M. Alexander S. Ali G. Alkhazov P. Alvarez Cartelle A. A. Alves, Jr. S. Amato S. Amerio Y. Amhis L. An L. Anderlini J. Anderson M. Andreotti J. E. Andrews R. B. Appleby O. Aquines Gutierrez F. Archilli P. d’Argent A. Artamonov M. Artuso E. Aslanides G. Auriemma M. Baalouch S. Bachmann J. J. Back A. Badalov C. Baesso W. Baldini R. J. Barlow C. Barschel S. Barsuk W. Barter V. Batozskaya V. Battista A. Bay L. Beaucourt J. Beddow F. Bedeschi I. Bediaga L. J. Bel I. Belyaev E. Ben-Haim G. Bencivenni S. Benson J. Benton A. Berezhnoy R. Bernet A. Bertolin M.-O. Bettler M. van Beuzekom A. Bien S. Bifani T. Bird A. Birnkraut A. Bizzeti T. Blake F. Blanc J. Blouw S. Blusk V. Bocci A. Bondar N. Bondar W. Bonivento S. Borghi M. Borsato T. J. V. Bowcock E. Bowen C. Bozzi S. Braun D. Brett M. Britsch T. Britton J. Brodzicka N. H. Brook A. Bursche J. Buytaert S. Cadeddu R. Calabrese M. Calvi M. Calvo Gomez P. Campana D. Campora Perez L. Capriotti A. Carbone G. Carboni R. Cardinale A. Cardini P. Carniti L. Carson K. Carvalho Akiba R. Casanova Mohr G. Casse L. Cassina L. Castillo Garcia M. Cattaneo Ch. Cauet G. Cavallero R. Cenci M. Charles Ph. Charpentier M. Chefdeville S. Chen S.-F. Cheung N. Chiapolini M. Chrzaszcz X. Cid Vidal G. Ciezarek P. E. L. Clarke M. Clemencic H. V. Cliff J. Closier V. Coco J. Cogan E. Cogneras V. Cogoni L. Cojocariu G. Collazuol P. Collins A. Comerma-Montells A. Contu A. Cook M. Coombes S. Coquereau G. Corti M. Corvo B. Couturier G. A. Cowan D. C. Craik A. Crocombe M. Cruz Torres S. Cunliffe R. Currie C. D’Ambrosio J. Dalseno P. N. Y. David A. Davis K. De Bruyn S. De Capua M. De Cian J. M. De Miranda L. De Paula W. De Silva P. De Simone C.-T. Dean D. Decamp M. Deckenhoff L. Del Buono N. Déléage D. Derkach O. Deschamps F. Dettori B. Dey A. Di Canto F. Di Ruscio H. Dijkstra S. Donleavy F. Dordei M. Dorigo A. Dosil Suárez D. Dossett A. Dovbnya K. Dreimanis L. Dufour G. Dujany F. Dupertuis P. Durante R. Dzhelyadin A. Dziu European Organization for Nuclear Research (CERN) Geneva Switzerland Universidad de Santiago de Compostela Santiago de Compostela Spain H.H. Wills Physics Laboratory University of Bristol Bristol United Kingdom Oliver Lodge Laboratory University of Liverpool Liverpool United Kingdom Clermont Université Université Blaise Pascal CNRS/IN2P3 LPC Clermont-Ferrand France CPPM Aix-Marseille Université CNRS/IN2P3 Marseille France Fakultät Physik Technische Universität Dortmund Dortmund Germany School of Physics and Astronomy University of Glasgow Glasgow United Kingdom Nikhef National Institute for Subatomic Physics Amsterdam The Netherlands Petersburg Nuclear Physics Institute (PNPI) Gatchina Russia Imperial College London London United Kingdom University of Cincinnati Cincinnati Ohio 45221 USA Universidade Federal do Rio de Janeiro (UFRJ) Rio de Janeiro Brazil Sezione INFN di Padova Padova Italy LAL Université Paris-Sud CNRS/IN2P3 Orsay France Center for High Energy Physics Tsinghua University Beijing China Sezione INFN di Firenze Firenze Italy Physik-Institut Universität Zürich Zürich Switzerland Sezione INFN di Ferrara Ferrara Italy University of Maryland College Park Maryland 20742 USA School of Physics and Astronomy University of Manchester Manchester United Kingdom Max-Planck-Institut für Kernphysik (MPIK) Heidelberg Germany Physikalisches Institut Ruprecht-Karls-Universität Heidelberg Heidelberg Germany Institute for High Energy Physics (IHEP) Protvino Russia Syracuse University Syracuse New York 13244 USA Sezione INFN di Roma La Sapienza Roma Italy Department of Physics University of Warwick Coventry United Kingdom Universitat de Barcelona Barcelona Spain Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio) Rio de Janeiro Brazil (associated with Universidade Federal do Rio de Janeiro (UFRJ) Rio de Janeiro Brazil) National Center for Nuclear Research (NCBJ) Warsaw Poland Ecole Polytechnique Fédérale de Lausanne (EPFL) Lausan

The Dalitz plot distribution of B0→D¯0K+π− decays is studied using a data sample corresponding to 3.0 fb−1 of pp collision data recorded by the LHCb experiment during 2011 and 2012. The data are described by an amplitude model that contains contributions from intermediate K*(892)0, K*(1410)0, K2*(1430)0 and D2*(2460)− resonances. The model also contains components to describe broad structures, including the K0*(1430)0 and D0*(2400)− resonances, in the Kπ S-wave and the Dπ S- and P-waves. The masses and widths of the D0*(2400)− and D2*(2460)− resonances are measured, as are the complex amplitudes and fit fractions for all components included in the amplitude model. The model obtained will be an integral part of a future determination of the angle γ of the Cabibbo-Kobayashi-Maskawa quark mixing matrix using B0→DK+π− decays.

关键词：

来源：评论

学校读者我要写书评

暂无评论

First observation and amplitude analysis of the B−→D+K−π− decay

引用

Physical Review D 2015年第9期91卷 092002-092002页

作者： R. Aaij B. Adeva M. Adinolfi A. Affolder Z. Ajaltouni S. Akar J. Albrecht F. Alessio M. Alexander S. Ali G. Alkhazov P. Alvarez Cartelle A. A. Alves, Jr. S. Amato S. Amerio Y. Amhis L. An L. Anderlini J. Anderson M. Andreotti J. E. Andrews R. B. Appleby O. Aquines Gutierrez F. Archilli A. Artamonov M. Artuso E. Aslanides G. Auriemma M. Baalouch S. Bachmann J. J. Back A. Badalov C. Baesso W. Baldini R. J. Barlow C. Barschel S. Barsuk W. Barter V. Batozskaya V. Battista A. Bay L. Beaucourt J. Beddow F. Bedeschi I. Bediaga L. J. Bel I. Belyaev E. Ben-Haim G. Bencivenni S. Benson J. Benton A. Berezhnoy R. Bernet A. Bertolin M.-O. Bettler M. van Beuzekom A. Bien S. Bifani T. Bird A. Bizzeti T. Blake F. Blanc J. Blouw S. Blusk V. Bocci A. Bondar N. Bondar W. Bonivento S. Borghi A. Borgia M. Borsato T. J. V. Bowcock E. Bowen C. Bozzi S. Braun D. Brett M. Britsch T. Britton J. Brodzicka N. H. Brook A. Bursche J. Buytaert S. Cadeddu R. Calabrese M. Calvi M. Calvo Gomez P. Campana D. Campora Perez L. Capriotti A. Carbone G. Carboni R. Cardinale A. Cardini P. Carniti L. Carson K. Carvalho Akiba R. Casanova Mohr G. Casse L. Cassina L. Castillo Garcia M. Cattaneo Ch. Cauet G. Cavallero R. Cenci M. Charles Ph. Charpentier M. Chefdeville S. Chen S.-F. Cheung N. Chiapolini M. Chrzaszcz X. Cid Vidal G. Ciezarek P. E. L. Clarke M. Clemencic H. V. Cliff J. Closier V. Coco J. Cogan E. Cogneras V. Cogoni L. Cojocariu G. Collazuol P. Collins A. Comerma-Montells A. Contu A. Cook M. Coombes S. Coquereau G. Corti M. Corvo I. Counts B. Couturier G. A. Cowan D. C. Craik A. C. Crocombe M. Cruz Torres S. Cunliffe R. Currie C. D’Ambrosio J. Dalseno P. N. Y. David A. Davis K. De Bruyn S. De Capua M. De Cian J. M. De Miranda L. De Paula W. De Silva P. De Simone C.-T. Dean D. Decamp M. Deckenhoff L. Del Buono N. Déléage D. Derkach O. Deschamps F. Dettori B. Dey A. Di Canto F. Di Ruscio H. Dijkstra S. Donleavy F. Dordei M. Dorigo A. Dosil Suárez D. Dossett A. Dovbnya K. Dreimanis G. Dujany F. Dupertuis P. Durante R. Dzhelyadin A. Dziurda A. Dzyub Nikhef National Institute for Subatomic Physics Amsterdam The Netherlands Universidad de Santiago de Compostela Santiago de Compostela Spain H.H. Wills Physics Laboratory University of Bristol Bristol United Kingdom Oliver Lodge Laboratory University of Liverpool Liverpool United Kingdom Clermont Université Université Blaise Pascal CNRS/IN2P3 LPC Clermont-Ferrand France CPPM Aix-Marseille Université CNRS/IN2P3 Marseille France Fakultät Physik Technische Universität Dortmund Dortmund Germany European Organization for Nuclear Research (CERN) Geneva Switzerland School of Physics and Astronomy University of Glasgow Glasgow United Kingdom Petersburg Nuclear Physics Institute (PNPI) Gatchina Russia Imperial College London London United Kingdom University of Cincinnati Cincinnati OH United States Universidade Federal do Rio de Janeiro (UFRJ) Rio de Janeiro Brazil Sezione INFN di Padova Padova Italy LAL Université Paris-Sud CNRS/IN2P3 Orsay France Center for High Energy Physics Tsinghua University Beijing China Sezione INFN di Firenze Firenze Italy Physik-Institut Universität Zürich Zürich Switzerland Sezione INFN di Ferrara Ferrara Italy University of Maryland College Park MD United States School of Physics and Astronomy University of Manchester Manchester United Kingdom Max-Planck-Institut für Kernphysik (MPIK) Heidelberg Germany Institute for High Energy Physics (IHEP) Protvino Russia Syracuse University Syracuse NY United States Sezione INFN di Roma La Sapienza Roma Italy Physikalisches Institut Ruprecht-Karls-Universität Heidelberg Heidelberg Germany Department of Physics University of Warwick Coventry United Kingdom Universitat de Barcelona Barcelona Spain Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio) Rio de Janeiro Brazil (associated with Institution Universidade Federal do Rio de Janeiro (UFRJ) Rio de Janeiro Brazil) National Center for Nuclear Research (NCBJ) Warsaw Poland Ecole Polytechnique Fédérale de Lausanne (EPF

The B−→D+K−π− decay is observed in a data sample corresponding to 3.0 fb−1 of pp collision data recorded by the LHCb experiment during 2011 and 2012. Its branching fraction is measured to be B(B−→D+K−π−)=(7.31±0.19±0.22±0.39)×10−5 where the uncertainties are statistical, systematic and from the branching fraction of the normalization channel B−→D+π−π−, respectively. An amplitude analysis of the resonant structure of the B−→D+K−π− decay is used to measure the contributions from quasi-two-body B−→D0*(2400)0K−, B−→D2*(2460)0K−, and B−→DJ*(2760)0K− decays, as well as from nonresonant sources. The DJ*(2760)0 resonance is determined to have spin 1.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Dalitz plot analysis of B0→D¯0π+π− decays

引用

Physical Review D 2015年第3期92卷 032002-032002页

作者： R. Aaij B. Adeva M. Adinolfi A. Affolder Z. Ajaltouni S. Akar J. Albrecht F. Alessio M. Alexander S. Ali G. Alkhazov P. Alvarez Cartelle A. A. Alves, Jr. S. Amato S. Amerio Y. Amhis L. An L. Anderlini J. Anderson R. Andreassen M. Andreotti J. E. Andrews R. B. Appleby O. Aquines Gutierrez F. Archilli P. d’Argent A. Artamonov M. Artuso E. Aslanides G. Auriemma M. Baalouch S. Bachmann J. J. Back A. Badalov C. Baesso W. Baldini R. J. Barlow C. Barschel S. Barsuk W. Barter V. Batozskaya V. Battista A. Bay L. Beaucourt J. Beddow F. Bedeschi I. Bediaga L. J. Bel S. Belogurov I. Belyaev E. Ben-Haim G. Bencivenni S. Benson J. Benton A. Berezhnoy R. Bernet A. Bertolin M.-O. Bettler M. van Beuzekom A. Bien S. Bifani T. Bird A. Birnkraut A. Bizzeti T. Blake F. Blanc J. Blouw S. Blusk V. Bocci A. Bondar N. Bondar W. Bonivento S. Borghi A. Borgia M. Borsato T. J. V. Bowcock E. Bowen C. Bozzi D. Brett M. Britsch T. Britton J. Brodzicka N. H. Brook A. Bursche J. Buytaert S. Cadeddu R. Calabrese M. Calvi M. Calvo Gomez P. Campana D. Campora Perez L. Capriotti A. Carbone G. Carboni R. Cardinale A. Cardini P. Carniti L. Carson K. Carvalho Akiba R. Casanova Mohr G. Casse L. Cassina L. Castillo Garcia M. Cattaneo Ch. Cauet G. Cavallero R. Cenci M. Charles Ph. Charpentier M. Chefdeville S. Chen S.-F. Cheung N. Chiapolini M. Chrzaszcz X. Cid Vidal G. Ciezarek P. E. L. Clarke M. Clemencic H. V. Cliff J. Closier V. Coco J. Cogan E. Cogneras V. Cogoni L. Cojocariu G. Collazuol P. Collins A. Comerma-Montells A. Contu A. Cook M. Coombes S. Coquereau G. Corti M. Corvo I. Counts B. Couturier G. A. Cowan D. C. Craik A. Crocombe M. Cruz Torres S. Cunliffe R. Currie C. D’Ambrosio J. Dalseno P. David P. N. Y. David A. Davis K. De Bruyn S. De Capua M. De Cian J. M. De Miranda L. De Paula W. De Silva P. De Simone C.-T. Dean D. Decamp M. Deckenhoff L. Del Buono N. Déléage D. Derkach O. Deschamps F. Dettori B. Dey A. Di Canto F. Di Ruscio H. Dijkstra S. Donleavy F. Dordei M. Dorigo A. Dosil Suárez D. Dossett A. Dovbnya K. Dreimanis G. Dujany F. Duper Nikhef National Institute for Subatomic Physics Amsterdam The Netherlands Universidad de Santiago de Compostela Santiago de Compostela Spain H.H. Wills Physics Laboratory University of Bristol Bristol United Kingdom Oliver Lodge Laboratory University of Liverpool Liverpool United Kingdom Clermont Université Université Blaise Pascal CNRS/IN2P3 LPC Clermont-Ferrand France CPPM Aix-Marseille Université CNRS/IN2P3 Marseille France Fakultät Physik Technische Universität Dortmund Dortmund Germany European Organization for Nuclear Research (CERN) Geneva Switzerland School of Physics and Astronomy University of Glasgow Glasgow United Kingdom Petersburg Nuclear Physics Institute (PNPI) Gatchina Russia Imperial College London London United Kingdom Sezione INFN di Roma La Sapienza Roma Italy Universidade Federal do Rio de Janeiro (UFRJ) Rio de Janeiro Brazil Sezione INFN di Padova Padova Italy LAL Université Paris-Sud CNRS/IN2P3 Orsay France Center for High Energy Physics Tsinghua University Beijing China Sezione INFN di Firenze Firenze Italy Physik-Institut Universität Zürich Zürich Switzerland University of Cincinnati Cincinnati Ohio 45221 USA Sezione INFN di Ferrara Ferrara Italy University of Maryland College Park Maryland 20742 USA School of Physics and Astronomy University of Manchester Manchester United Kingdom Max-Planck-Institut für Kernphysik (MPIK) Heidelberg Germany Physikalisches Institut Ruprecht-Karls-Universität Heidelberg Heidelberg Germany Institute for High Energy Physics (IHEP) Protvino Russia Syracuse University Syracuse New York 13244 USA Department of Physics University of Warwick Coventry United Kingdom Universitat de Barcelona Barcelona Spain Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio) Rio de Janeiro Brazil (associated with Universidade Federal do Rio de Janeiro (UFRJ) Rio de Janeiro Brazil) National Center for Nuclear Research (NCBJ) Warsaw Poland Ecole Polytechnique Fédérale de Lausanne (EPFL) Lausan

The resonant substructures of B0→D¯0π+π− decays are studied with the Dalitz plot technique. In this study a data sample corresponding to an integrated luminosity of 3.0 fb−1 of pp collisions collected by the LHCb detector is used. The branching fraction of the B0→D¯0π+π− decay in the region m(D¯0π±)>2.1 GeV/c2 is measured to be (8.46±0.14±0.29±0.40)×10−4, where the first uncertainty is statistical, the second is systematic and the last arises from the normalization channel B0→D*(2010)−π+. The π+π− S-wave components are modeled with the isobar and K-matrix formalisms. Results of the Dalitz plot analyses using both models are presented. A resonant structure at m(D¯0π−)≈2.8 GeV/c2 is confirmed and its spin-parity is determined for the first time as JP=3−. The branching fraction, mass and width of this structure are determined together with those of the D0*(2400)− and D2*(2460)− resonances. The branching fractions of other B0→D¯0h0 decay components with h0→π+π− are also reported. Many of these branching fraction measurements are the most precise to date. The first observation of the decays B0→D¯0f0(500), B0→D¯0f0(980), B0→D¯0ρ(1450), B0→D3*(2760)−π+ and the first evidence of B0→D¯0f0(2020) are presented.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Measurement of the branching fraction ratio B(Bc+→ψ(2S)π+)/B(Bc+→J/ψπ+)

引用

Physical Review D 2015年第7期92卷 072007-072007页

作者： R. Aaij B. Adeva M. Adinolfi A. Affolder Z. Ajaltouni S. Akar J. Albrecht F. Alessio M. Alexander S. Ali G. Alkhazov P. Alvarez Cartelle A. A. Alves, Jr S. Amato S. Amerio Y. Amhis L. An J. Anderson G. Andreassi M. Andreotti J. E. Andrews R. B. Appleby O. Aquines Gutierrez F. Archilli P. d’Argent A. Artamonov M. Artuso E. Aslanides G. Auriemma M. Baalouch S. Bachmann J. J. Back A. Badalov C. Baesso W. Baldini R. J. Barlow C. Barschel S. Barsuk W. Barter V. Batozskaya V. Battista A. Bay L. Beaucourt J. Beddow F. Bedeschi I. Bediaga L. J. Bel V. Bellee I. Belyaev E. Ben-Haim G. Bencivenni S. Benson J. Benton A. Berezhnoy R. Bernet A. Bertolin M.-O. Bettler M. van Beuzekom A. Bien S. Bifani T. Bird A. Birnkraut A. Bizzeti T. Blake F. Blanc J. Blouw S. Blusk V. Bocci A. Bondar N. Bondar W. Bonivento S. Borghi M. Borsato T. J. V. Bowcock E. Bowen C. Bozzi S. Braun D. Brett M. Britsch T. Britton J. Brodzicka N. H. Brook A. Bursche J. Buytaert S. Cadeddu R. Calabrese M. Calvi M. Calvo Gomez P. Campana D. Campora Perez L. Capriotti A. Carbone G. Carboni R. Cardinale A. Cardini P. Carniti L. Carson K. Carvalho Akiba G. Casse L. Cassina L. Castillo Garcia M. Cattaneo Ch. Cauet G. Cavallero R. Cenci M. Charles Ph. Charpentier M. Chefdeville S. Chen S.-F. Cheung N. Chiapolini M. Chrzaszcz X. Cid Vidal G. Ciezarek P. E. L. Clarke M. Clemencic H. V. Cliff J. Closier V. Coco J. Cogan E. Cogneras V. Cogoni L. Cojocariu G. Collazuol P. Collins A. Comerma-Montells A. Contu A. Cook M. Coombes S. Coquereau G. Corti M. Corvo B. Couturier G. A. Cowan D. C. Craik A. Crocombe M. Cruz Torres S. Cunliffe R. Currie C. D’Ambrosio E. Dall’Occo J. Dalseno P. N. Y. David A. Davis K. De Bruyn S. De Capua M. De Cian J. M. De Miranda L. De Paula P. De Simone C.-T. Dean D. Decamp M. Deckenhoff L. Del Buono N. Déléage M. Demmer D. Derkach O. Deschamps F. Dettori B. Dey A. Di Canto F. Di Ruscio H. Dijkstra S. Donleavy F. Dordei M. Dorigo A. Dosil Suárez D. Dossett A. Dovbnya K. Dreimanis L. Dufour G. Dujany F. Dupertuis P. Durante R. Dzhelyadin A. D European Organization for Nuclear Research (CERN) Geneva Switzerland Universidad de Santiago de Compostela Santiago de Compostela Spain H.H. Wills Physics Laboratory University of Bristol Bristol United Kingdom Oliver Lodge Laboratory University of Liverpool Liverpool United Kingdom Clermont Université Université Blaise Pascal CNRS/IN2P3 LPC Clermont-Ferrand France CPPM Aix-Marseille Université CNRS/IN2P3 Marseille France Fakultät Physik Technische Universität Dortmund Dortmund Germany School of Physics and Astronomy University of Glasgow Glasgow United Kingdom Nikhef National Institute for Subatomic Physics Amsterdam The Netherlands Petersburg Nuclear Physics Institute (PNPI) Gatchina Russia Imperial College London London United Kingdom University of Cincinnati Cincinnati 45221 Ohio USA Universidade Federal do Rio de Janeiro (UFRJ) Rio de Janeiro Brazil Sezione INFN di Padova Padova Italy LAL Université Paris-Sud CNRS/IN2P3 Orsay France Center for High Energy Physics Tsinghua University Beijing China Physik-Institut Universität Zürich Zürich Switzerland Ecole Polytechnique Fédérale de Lausanne (EPFL) Lausanne Switzerland Sezione INFN di Ferrara Ferrara Italy University of Maryland College Park Maryland 20742 USA School of Physics and Astronomy University of Manchester Manchester United Kingdom Max-Planck-Institut für Kernphysik (MPIK) Heidelberg Germany Physikalisches Institut Ruprecht-Karls-Universität Heidelberg Heidelberg Germany Institute for High Energy Physics (IHEP) Protvino Russia Syracuse University Syracuse 13244 New York USA Sezione INFN di Roma La Sapienza Roma Italy Department of Physics University of Warwick Coventry United Kingdom Universitat de Barcelona Barcelona Spain Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio) Rio de Janeiro Brazil (associated with Universidade Federal do Rio de Janeiro (UFRJ) Rio de Janeiro Brazil) National Center for Nuclear Research (NCBJ) Warsaw Poland LAPP Université Savoie

Using pp collision data collected by LHCb at center-of-mass energies s=7 TeV and 8 TeV, corresponding to an integrated luminosity of 3 fb−1, the ratio of the branching fraction of the Bc+→ψ(2S)π+ decay relative to that of the Bc+→J/ψπ+ decay is measured to be 0.268±0.032(stat)±0.007(syst)±0.006(BF). The first uncertainty is statistical, the second is systematic, and the third is due to the uncertainties on the branching fractions of the J/ψ→μ+μ− and ψ(2S)→μ+μ− decays. This measurement is consistent with the previous LHCb result, and the statistical uncertainty is halved.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Study of CP violation in B∓→Dh∓ (h=K,π) with the modes D→K∓π±π0, D→π+π−π0 and D→K+K−π0

引用

Physical Review D 2015年第11期91卷 112014-112014页

作者： R. Aaij B. Adeva M. Adinolfi A. Affolder Z. Ajaltouni S. Akar J. Albrecht F. Alessio M. Alexander S. Ali G. Alkhazov P. Alvarez Cartelle A. A. Alves, Jr S. Amato S. Amerio Y. Amhis L. An L. Anderlini J. Anderson M. Andreotti J. E. Andrews R. B. Appleby O. Aquines Gutierrez F. Archilli P. d’Argent A. Artamonov M. Artuso E. Aslanides G. Auriemma M. Baalouch S. Bachmann J. J. Back A. Badalov C. Baesso W. Baldini R. J. Barlow C. Barschel S. Barsuk W. Barter V. Batozskaya V. Battista A. Bay L. Beaucourt J. Beddow F. Bedeschi I. Bediaga L. J. Bel I. Belyaev E. Ben-Haim G. Bencivenni S. Benson J. Benton A. Berezhnoy R. Bernet A. Bertolin M.-O. Bettler M. van Beuzekom A. Bien S. Bifani T. Bird A. Birnkraut A. Bizzeti T. Blake F. Blanc J. Blouw S. Blusk V. Bocci A. Bondar N. Bondar W. Bonivento S. Borghi M. Borsato T. J. V. Bowcock E. Bowen C. Bozzi S. Braun D. Brett M. Britsch T. Britton J. Brodzicka N. H. Brook A. Bursche J. Buytaert S. Cadeddu R. Calabrese M. Calvi M. Calvo Gomez P. Campana D. Campora Perez L. Capriotti A. Carbone G. Carboni R. Cardinale A. Cardini P. Carniti L. Carson K. Carvalho Akiba R. Casanova Mohr G. Casse L. Cassina L. Castillo Garcia M. Cattaneo Ch. Cauet G. Cavallero R. Cenci M. Charles Ph. Charpentier M. Chefdeville S. Chen S.-F. Cheung N. Chiapolini M. Chrzaszcz X. Cid Vidal G. Ciezarek P. E. L. Clarke M. Clemencic H. V. Cliff J. Closier V. Coco J. Cogan E. Cogneras V. Cogoni L. Cojocariu G. Collazuol P. Collins A. Comerma-Montells A. Contu A. Cook M. Coombes S. Coquereau G. Corti M. Corvo B. Couturier G. A. Cowan D. C. Craik A. Crocombe M. Cruz Torres S. Cunliffe R. Currie C. D’Ambrosio J. Dalseno P. N. Y. David A. Davis K. De Bruyn S. De Capua M. De Cian J. M. De Miranda L. De Paula W. De Silva P. De Simone C.-T. Dean D. Decamp M. Deckenhoff L. Del Buono N. Déléage D. Derkach O. Deschamps F. Dettori B. Dey A. Di Canto F. Di Ruscio H. Dijkstra S. Donleavy F. Dordei M. Dorigo A. Dosil Suárez D. Dossett A. Dovbnya K. Dreimanis L. Dufour G. Dujany F. Dupertuis P. Durante R. Dzhelyadin A. Dziur European Organization for Nuclear Research (CERN) Geneva Switzerland Universidad de Santiago de Compostela Santiago de Compostela Spain H.H. Wills Physics Laboratory University of Bristol Bristol United Kingdom Oliver Lodge Laboratory University of Liverpool Liverpool United Kingdom Clermont Université Université Blaise Pascal CNRS/IN2P3 LPC Clermont-Ferrand France CPPM Aix-Marseille Université CNRS/IN2P3 Marseille France Fakultät Physik Technische Universität Dortmund Dortmund Germany School of Physics and Astronomy University of Glasgow Glasgow United Kingdom Nikhef National Institute for Subatomic Physics Amsterdam The Netherlands Petersburg Nuclear Physics Institute (PNPI) Gatchina Russia Imperial College London London United Kingdom University of Cincinnati Cincinnati OH United States Universidade Federal do Rio de Janeiro (UFRJ) Rio de Janeiro Brazil Sezione INFN di Padova Padova Italy LAL Université Paris-Sud CNRS/IN2P3 Orsay France Center for High Energy Physics Tsinghua University Beijing China Sezione INFN di Firenze Firenze Italy Physik-Institut Universität Zürich Zürich Switzerland Sezione INFN di Ferrara Ferrara Italy University of Maryland College Park MD United States School of Physics and Astronomy University of Manchester Manchester United Kingdom Max-Planck-Institut für Kernphysik (MPIK) Heidelberg Germany Physikalisches Institut Ruprecht-Karls-Universität Heidelberg Heidelberg Germany Institute for High Energy Physics (IHEP) Protvino Russia Syracuse University Syracuse NY United States Sezione INFN di Roma La Sapienza Roma Italy Department of Physics University of Warwick Coventry United Kingdom Universitat de Barcelona Barcelona Spain Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio) Rio de Janeiro Brazil (associated with Institution Universidade Federal do Rio de Janeiro (UFRJ) Rio de Janeiro Brazil) National Center for Nuclear Research (NCBJ) Warsaw Poland Ecole Polytechnique Fédérale de Lausanne (EPF

An analysis of the decays of B∓→DK∓ and B∓→Dπ∓ is presented in which the D meson is reconstructed in the three-body final states K∓π±π0, π+π−π0 and K+K−π0. Using data from LHCb corresponding to an integrated luminosity of 3.0 fb−1 of pp collisions, measurements of several CP observables are performed. First observations are obtained of the suppressed Atwood-Dunietz-Soni decay B∓→[π∓K±π0]Dπ∓ and the quasi-Gronau-London-Wyler decay B∓→[K+K−π0]Dπ∓. The results are interpreted in the context of the unitarity triangle angle γ and related parameters.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Search for the rare decays B0→J/ψγ and Bs0→J/ψγ

引用

Physical Review D 2015年第11期92卷 112002-112002页

作者： R. Aaij C. Abellán Beteta B. Adeva M. Adinolfi A. Affolder Z. Ajaltouni S. Akar J. Albrecht F. Alessio M. Alexander S. Ali G. Alkhazov P. Alvarez Cartelle A. A. Alves, Jr S. Amato S. Amerio Y. Amhis L. An L. Anderlini J. Anderson G. Andreassi M. Andreotti J. E. Andrews R. B. Appleby O. Aquines Gutierrez F. Archilli P. d’Argent A. Artamonov M. Artuso E. Aslanides G. Auriemma M. Baalouch S. Bachmann J. J. Back A. Badalov C. Baesso W. Baldini R. J. Barlow C. Barschel S. Barsuk W. Barter V. Batozskaya V. Battista A. Bay L. Beaucourt J. Beddow F. Bedeschi I. Bediaga L. J. Bel V. Bellee N. Belloli I. Belyaev E. Ben-Haim G. Bencivenni S. Benson J. Benton A. Berezhnoy R. Bernet A. Bertolin M.-O. Bettler M. van Beuzekom A. Bien S. Bifani P. Billoir T. Bird A. Birnkraut A. Bizzeti T. Blake F. Blanc J. Blouw S. Blusk V. Bocci A. Bondar N. Bondar W. Bonivento S. Borghi M. Borsato T. J. V. Bowcock E. Bowen C. Bozzi S. Braun M. Britsch T. Britton J. Brodzicka N. H. Brook E. Buchanan C. Burr A. Bursche J. Buytaert S. Cadeddu R. Calabrese M. Calvi M. Calvo Gomez P. Campana D. Campora Perez L. Capriotti A. Carbone G. Carboni R. Cardinale A. Cardini P. Carniti L. Carson K. Carvalho Akiba G. Casse L. Cassina L. Castillo Garcia M. Cattaneo Ch. Cauet G. Cavallero R. Cenci M. Charles Ph. Charpentier M. Chefdeville S. Chen S.-F. Cheung N. Chiapolini M. Chrzaszcz X. Cid Vidal G. Ciezarek P. E. L. Clarke M. Clemencic H. V. Cliff J. Closier V. Coco J. Cogan E. Cogneras V. Cogoni L. Cojocariu G. Collazuol P. Collins A. Comerma-Montells A. Contu A. Cook M. Coombes S. Coquereau G. Corti M. Corvo B. Couturier G. A. Cowan D. C. Craik A. Crocombe M. Cruz Torres S. Cunliffe R. Currie C. D’Ambrosio E. Dall’Occo J. Dalseno P. N. Y. David A. Davis O. De Aguiar Francisco K. De Bruyn S. De Capua M. De Cian J. M. De Miranda L. De Paula P. De Simone C.-T. Dean D. Decamp M. Deckenhoff L. Del Buono N. Déléage M. Demmer D. Derkach O. Deschamps F. Dettori B. Dey A. Di Canto F. Di Ruscio H. Dijkstra S. Donleavy F. Dordei M. Dorigo A. Dosil Suárez D. Dossett European Organization for Nuclear Research (CERN) Geneva Switzerland Physik-Institut Universität Zürich Zürich Switzerland Universidad de Santiago de Compostela Santiago de Compostela Spain H.H. Wills Physics Laboratory University of Bristol Bristol United Kingdom Oliver Lodge Laboratory University of Liverpool Liverpool United Kingdom Clermont Université Université Blaise Pascal CNRS/IN2P3 LPC Clermont-Ferrand France CPPM Aix-Marseille Université CNRS/IN2P3 Marseille France Fakultät Physik Technische Universität Dortmund Dortmund Germany School of Physics and Astronomy University of Glasgow Glasgow United Kingdom Nikhef National Institute for Subatomic Physics Amsterdam The Netherlands Petersburg Nuclear Physics Institute (PNPI) Gatchina Russia Imperial College London London United Kingdom University of Cincinnati Cincinnati Ohio USA Universidade Federal do Rio de Janeiro (UFRJ) Rio de Janeiro Brazil Sezione INFN di Padova Padova Italy LAL Université Paris-Sud CNRS/IN2P3 Orsay France Center for High Energy Physics Tsinghua University Beijing China Sezione INFN di Firenze Firenze Italy Ecole Polytechnique Fédérale de Lausanne (EPFL) Lausanne Switzerland Sezione INFN di Ferrara Ferrara Italy University of Maryland College Park Maryland USA School of Physics and Astronomy University of Manchester Manchester United Kingdom Max-Planck-Institut für Kernphysik (MPIK) Heidelberg Germany Physikalisches Institut Ruprecht-Karls-Universität Heidelberg Heidelberg Germany Institute for High Energy Physics (IHEP) Protvino Russia Syracuse University Syracuse New York USA Sezione INFN di Roma La Sapienza Roma Italy Department of Physics University of Warwick Coventry United Kingdom Universitat de Barcelona Barcelona Spain Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio) Rio de Janeiro Brazil (associated with Institution Universidade Federal do Rio de Janeiro (UFRJ) Rio de Janeiro Brazil) National Center for Nuclear Research (NCBJ) Warsa

A search for the rare decay of a B0 or Bs0 meson into the final state J/ψγ is performed, using data collected by the LHCb experiment in pp collisions at s=7 and 8 TeV, corresponding to an integrated luminosity of 3 fb−1. The observed number of signal candidates is consistent with a background-only hypothesis. Branching fraction values larger than 1.5×10−6 for the B0→J/ψγ decay mode are excluded at 90% confidence level. For the Bs0→J/ψγ decay mode, branching fraction values larger than 7.3×10−6 are excluded at 90% confidence level; this is the first branching fraction limit for this decay.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Systematic study of charged-pion and kaon femtoscopy in Au + Au collisions at sNN=200 GeV

引用

Physical Review C 2015年第3期92卷 034914-034914页

作者： A. Adare S. Afanasiev C. Aidala N. N. Ajitanand Y. Akiba H. Al-Bataineh J. Alexander M. Alfred K. Aoki N. Apadula Y. Aramaki H. Asano E. T. Atomssa R. Averbeck T. C. Awes B. Azmoun V. Babintsev M. Bai G. Baksay L. Baksay N. S. Bandara B. Bannier K. N. Barish B. Bassalleck A. T. Basye S. Bathe V. Baublis C. Baumann A. Bazilevsky M. Beaumier S. Beckman S. Belikov R. Belmont R. Bennett A. Berdnikov Y. Berdnikov A. A. Bickley D. S. Blau J. S. Bok K. Boyle M. L. Brooks J. Bryslawskyj H. Buesching V. Bumazhnov G. Bunce S. Butsyk C. M. Camacho S. Campbell C.-H. Chen C. Y. Chi M. Chiu I. J. Choi J. B. Choi R. K. Choudhury P. Christiansen T. Chujo P. Chung O. Chvala V. Cianciolo Z. Citron B. A. Cole M. Connors P. Constantin M. Csanád T. Csörgő T. Dahms S. Dairaku I. Danchev D. Danley K. Das A. Datta M. S. Daugherity G. David K. DeBlasio K. Dehmelt A. Denisov A. Deshpande E. J. Desmond O. Dietzsch A. Dion P. B. Diss J. H. Do M. Donadelli O. Drapier A. Drees K. A. Drees J. M. Durham A. Durum D. Dutta S. Edwards Y. V. Efremenko F. Ellinghaus T. Engelmore A. Enokizono H. En'yo S. Esumi B. Fadem N. Feege D. E. Fields M. Finger M. Finger, Jr. F. Fleuret S. L. Fokin Z. Fraenkel J. E. Frantz A. Franz A. D. Frawley K. Fujiwara Y. Fukao T. Fusayasu C. Gal P. Gallus P. Garg I. Garishvili H. Ge F. Giordano A. Glenn H. Gong M. Gonin Y. Goto R. Granier de Cassagnac N. Grau S. V. Greene M. Grosse Perdekamp T. Gunji H.-Å. Gustafsson T. Hachiya J. S. Haggerty K. I. Hahn H. Hamagaki J. Hamblen H. F. Hamilton R. Han S. Y. Han J. Hanks E. P. Hartouni S. Hasegawa T. O. S. Haseler K. Hashimoto E. Haslum R. Hayano X. He M. Heffner T. K. Hemmick T. Hester J. C. Hill M. Hohlmann R. S. Hollis W. Holzmann K. Homma B. Hong T. Horaguchi D. Hornback T. Hoshino N. Hotvedt J. Huang S. Huang T. Ichihara R. Ichimiya J. Ide Y. Ikeda K. Imai M. Inaba A. Iordanova D. Isenhower M. Ishihara T. Isobe M. Issah A. Isupov D. Ivanishchev B. V. Jacak M. Jezghani J. Jia X. Jiang J. Jin B. M. Johnson K. S. Joo D. Jouan D. S. Jumper F. Kajihara S. Kametani N. Kamihara University of Colorado Boulder Colorado 80309 USA Joint Institute for Nuclear Research 141980 Dubna Moscow Region Russia Department of Physics University of Massachusetts Amherst Massachusetts 01003-9337 USA Department of Physics University of Michigan Ann Arbor Michigan 48109-1040 USA Chemistry Department Stony Brook University SUNY Stony Brook New York 11794-3400 USA RIKEN Nishina Center for Accelerator-Based Science Wako Saitama 351-0198 Japan RIKEN BNL Research Center Brookhaven National Laboratory Upton New York 11973-5000 USA New Mexico State University Las Cruces New Mexico 88003 USA Department of Physics and Astronomy Howard University Washington DC 20059 USA KEK High Energy Accelerator Research Organization Tsukuba Ibaraki 305-0801 Japan Kyoto University Kyoto 606-8502 Japan Iowa State University Ames Iowa 50011 USA Department of Physics and Astronomy Stony Brook University SUNY Stony Brook New York 11794-3800 USA Center for Nuclear Study Graduate School of Science University of Tokyo 7-3-1 Hongo Bunkyo Tokyo 113-0033 Japan Laboratoire Leprince-Ringuet Ecole Polytechnique CNRS-IN2P3 Route de Saclay F-91128 Palaiseau France Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA Physics Department Brookhaven National Laboratory Upton New York 11973-5000 USA IHEP Protvino State Research Center of Russian Federation Institute for High Energy Physics Protvino 142281 Russia Collider-Accelerator Department Brookhaven National Laboratory Upton New York 11973-5000 USA Florida Institute of Technology Melbourne Florida 32901 USA University of California-Riverside Riverside California 92521 USA University of New Mexico Albuquerque New Mexico 87131 USA Abilene Christian University Abilene Texas 79699 USA Baruch College City University of New York New York New York 10010 USA PNPI Petersburg Nuclear Physics Institute Gatchina Leningrad Region 188300 Russia Institut für Kernphysik University of Muenster D-48149 Muenster

We present a systematic study of charged-pion and kaon interferometry in Au+Au collisions at sNN=200 GeV. The kaon mean source radii are found to be larger than pion radii in the outward and longitudinal directions for the same transverse mass; this difference increases for more central collisions. The azimuthal-angle dependence of the radii was measured with respect to the second-order event plane and similar oscillations of the source radii were found for pions and kaons. Hydrodynamic models qualitatively describe the similar oscillations of the mean source radii for pions and kaons, but they do not fully describe the transverse-mass dependence of the oscillations.

关键词：

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：