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Jet energy scale measurements and their systematic uncertainties in proton-proton collisions at s=13 TeV with the ATLAS detector

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Physical Review D 2017年第7期96卷 072002-072002页

作者： M. Aab.ud G. Aad b. Ab.ott J. Ab.allah O. Ab.inov b. Ab.loos S. H. Ab.di O. S. Ab.uZeid N. L. Ab.aham H. Ab.amowicz H. Ab.eu R. Ab.eu Y. Ab.laiti b. S. Acharya S. Adachi L. Adamczyk J. Adelman M. Adersb.rger T. Adye A. A. Affolder T. Agatonovic-Jovin C. Agheorghiesei J. A. Aguilar-Saavedra S. P. Ahlen F. Ahmadov G. Aielli S. Akatsuka H. Akerstedt T. P. A. Åkesson A. V. Akimov G. L. Alb.rghi J. Alb.rt P. Alb.cocco M. J. Alconada Verzini M. Aleksa I. N. Aleksandrov C. Alexa G. Alexander T. Alexopoulos M. Alhroob.b. Ali M. Aliev G. Alimonti J. Alison S. P. Alkire b. M. M. Allb.ooke b. W. Allen P. P. Allport A. Aloisio A. Alonso F. Alonso C. Alpigiani A. A. Alshehri M. Alstaty b. Alvarez Gonzalez D. Álvarez Piqueras M. G. Alviggi b. T. Amadio Y. Amaral Coutinho C. Amelung D. Amidei S. P. Amor Dos Santos A. Amorim S. Amoroso G. Amundsen C. Anastopoulos L. S. Ancu N. Andari T. Andeen C. F. Anders J. K. Anders K. J. Anderson A. Andreazza V. Andrei S. Angelidakis I. Angelozzi A. Angerami A. V. Anisenkov N. Anjos A. Annovi C. Antel M. Antonelli A. Antonov D. J. Antrim F. Anulli M. Aoki L. Aperio b.lla G. Arab.dze Y. Arai J. P. Araque V. Araujo Ferraz A. T. H. Arce R. E. Ardell F. A. Arduh J-F. Arguin S. Argyropoulos M. Arik A. J. Armb.uster L. J. Armitage O. Arnaez H. Arnold M. Arratia O. Arslan A. Artamonov G. Artoni S. Artz S. Asai N. Asb.h A. Ashkenazi L. Asquith K. Assamagan R. Astalos M. Atkinson N. b. Atlay K. Augsten G. Avolio b. Axen M. K. Ayoub.G. Azuelos A. E. b.as M. J. b.ca H. b.chacou K. b.chas M. b.ckes M. b.ckhaus P. b.gnaia H. b.hrasemani J. T. b.ines M. b.jic O. K. b.ker E. M. b.ldin P. b.lek F. b.lli W. K. b.lunas E. b.nas Sw. b.nerjee A. A. E. b.nnoura L. b.rak E. L. b.rb.rio D. b.rb.ris M. b.rb.ro T. b.rillari M-S b.risits T. b.rklow N. b.rlow S. L. b.rnes b. M. b.rnett R. M. b.rnett Z. b.rnovska-b.enessy A. b.roncelli G. b.rone A. J. b.rr L. b.rranco Navarro F. b.rreiro J. b.rreiro Guimarães da Costa R. b.rtoldus A. E. b.rton P. b.rtos A. b.salaev A. b.ssalat R. L. b.tes S. J. b.tista J. R. b.tley M. Faculté des Sciences Université Mohamed Premier and LPTPM Oujda Morocco CPPM Aix-Marseille Université and CNRS/IN2P3 Marseille France Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman Oklahoma USA Department of Physics The University of Texas at Arlington Arlington TX USA Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan LAL Univ. Paris-Sud CNRS/IN2P3 Université Paris-Saclay Orsay France Department of Physics University of Toronto Toronto Ontario Canada Santa Cruz Institute for Particle Physics University of California Santa Cruz Santa Cruz California USA Department of Physics and Astronomy University of Sussex Brighton United Kingdom Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel Department of Physics Technion: Israel Institute of Technology Haifa Israel Center for High Energy Physics University of Oregon Eugene Oregon USA Department of Physics Stockholm University Sweden The Oskar Klein Centre Stockholm Sweden INFN Gruppo Collegato di Udine Sezione di Trieste Udine Italy ICTP Trieste Italy International Center for Elementary Particle Physics and Department of Physics The University of Tokyo Tokyo Japan AGH University of Science and Technology Faculty of Physics and Applied Computer Science Krakow Poland Department of Physics Northern Illinois University DeKalb Illinois USA Fakultät für Physik Ludwig-Maximilians-Universität München München Germany Particle Physics Department Rutherford Appleton Laboratory Didcot United Kingdom Institute of Physics University of Belgrade Belgrade Serbia Department of Physics Alexandru Ioan Cuza University of Iasi Iasi Romania Laboratório de Instrumentação e Física Experimental de Partículas—LIP Lisboa Portugal Departamento de Fisica Teorica y del Cosmos and CAFPE Universidad de Granada Granada Spain Department of Physics Boston University Boston Massachusetts USA Joint Institute for Nuclear Research JINR Dub

Jet energy scale measurements and their systematic uncertainties are reported for jets measured with the ATLAS detector using proton-proton collision data with a center-of-mass energy of s=13 TeV, corresponding to an integrated luminosity of 3.2 fb.1 collected during 2015 at the LHC. Jets are reconstructed from energy deposits forming topological clusters of calorimeter cells, using the anti-kt algorithm with radius parameter R=0.4. Jets are calib.ated with a series of simulation-b.sed corrections and in situ techniques. In situ techniques exploit the transverse momentum b.lance b.tween a jet and a reference ob.ect such as a photon, Z b.son, or multijet system for jets with 20b.th data and simulation. An uncertainty in the jet energy scale of less than 1% is found in the central calorimeter region (|η|<1.2) for jets with 100b.ut 4.5% is found for low-pT jets with pT=20 GeV in the central region, dominated b. uncertainties in the corrections for multiple proton-proton interactions. The calib.ation of forward jets (|η|>0.8) is derived from dijet pT b.lance measurements. For jets of pT=80 GeV, the additional uncertainty for the forward jet calib.ation reaches its largest value of ab.ut 2% in the range |η|>3.5 and in a narrow slice of 2.2<|η|<2.4.

关键词： Hadron colliders Particle detectors

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Search for anomalous electroweak production of WW/WZ in association with a high-mass dijet system in pp collisions at s=8 TeV with the ATLAS detector

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Physical Review D 2017年第3期95卷 032001-032001页

作者： M. Aab.ud G. Aad b. Ab.ott J. Ab.allah O. Ab.inov b. Ab.loos R. Ab.n O. S. Ab.uZeid N. L. Ab.aham H. Ab.amowicz H. Ab.eu R. Ab.eu Y. Ab.laiti b. S. Acharya S. Adachi L. Adamczyk D. L. Adams J. Adelman S. Adomeit T. Adye A. A. Affolder T. Agatonovic-Jovin J. A. Aguilar-Saavedra S. P. Ahlen F. Ahmadov G. Aielli H. Akerstedt T. P. A. Åkesson A. V. Akimov G. L. Alb.rghi J. Alb.rt S. Alb.and M. J. Alconada Verzini M. Aleksa I. N. Aleksandrov C. Alexa G. Alexander T. Alexopoulos M. Alhroob.b. Ali M. Aliev G. Alimonti J. Alison S. P. Alkire b. M. M. Allb.ooke b. W. Allen P. P. Allport A. Aloisio A. Alonso F. Alonso C. Alpigiani A. A. Alshehri M. Alstaty b. Alvarez Gonzalez D. Álvarez Piqueras M. G. Alviggi b. T. Amadio K. Amako Y. Amaral Coutinho C. Amelung D. Amidei S. P. Amor Dos Santos A. Amorim S. Amoroso G. Amundsen C. Anastopoulos L. S. Ancu N. Andari T. Andeen C. F. Anders G. Anders J. K. Anders K. J. Anderson A. Andreazza V. Andrei S. Angelidakis I. Angelozzi A. Angerami F. Anghinolfi A. V. Anisenkov N. Anjos A. Annovi C. Antel M. Antonelli A. Antonov F. Anulli M. Aoki L. Aperio b.lla G. Arab.dze Y. Arai J. P. Araque A. T. H. Arce F. A. Arduh J-F. Arguin S. Argyropoulos M. Arik A. J. Armb.uster L. J. Armitage O. Arnaez H. Arnold M. Arratia O. Arslan A. Artamonov G. Artoni S. Artz S. Asai N. Asb.h A. Ashkenazi b. Åsman L. Asquith K. Assamagan R. Astalos M. Atkinson N. b. Atlay K. Augsten G. Avolio b. Axen M. K. Ayoub.G. Azuelos M. A. b.ak A. E. b.as M. J. b.ca H. b.chacou K. b.chas M. b.ckes M. b.ckhaus P. b.giacchi P. b.gnaia Y. b.i J. T. b.ines O. K. b.ker E. M. b.ldin P. b.lek T. b.lestri F. b.lli W. K. b.lunas E. b.nas Sw. b.nerjee A. A. E. b.nnoura L. b.rak E. L. b.rb.rio D. b.rb.ris M. b.rb.ro T. b.rillari M-S b.risits T. b.rklow N. b.rlow S. L. b.rnes b. M. b.rnett R. M. b.rnett Z. b.rnovska-b.enessy A. b.roncelli G. b.rone A. J. b.rr L. b.rranco Navarro F. b.rreiro J. b.rreiro Guimarães da Costa R. b.rtoldus A. E. b.rton P. b.rtos A. b.salaev A. b.ssalat R. L. b.tes S. J. b.tista J. R. b.tley M. b.ttaglia Faculté des Sciences Université Mohamed Premier and LPTPM Oujda Morocco CPPM Aix-Marseille Université and CNRS/IN2P3 Marseille France Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman Oklahoma USA Department of Physics The University of Texas at Arlington Arlington Texas USA Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan LAL Univ. Paris-Sud CNRS/IN2P3 Université Paris-Saclay Orsay France Nikhef National Institute for Subatomic Physics and University of Amsterdam Amsterdam Netherlands Santa Cruz Institute for Particle Physics University of California Santa Cruz Santa Cruz California USA Department of Physics and Astronomy University of Sussex Brighton United Kingdom Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel Department of Physics Technion: Israel Institute of Technology Haifa Israel Center for High Energy Physics University of Oregon Eugene Oregon USA Department of Physics Stockholm University Sweden The Oskar Klein Centre Stockholm Sweden INFN Gruppo Collegato di Udine Sezione di Trieste Udine Italy ICTP Trieste Italy International Center for Elementary Particle Physics and Department of Physics The University of Tokyo Tokyo Japan AGH University of Science and Technology Faculty of Physics and Applied Computer Science Krakow Poland Physics Department Brookhaven National Laboratory Upton New York USA Department of Physics Northern Illinois University DeKalb Illinois USA Fakultät für Physik Ludwig-Maximilians-Universität München München Germany Particle Physics Department Rutherford Appleton Laboratory Didcot United Kingdom Oliver Lodge Laboratory University of Liverpool Liverpool United Kingdom Institute of Physics University of Belgrade Belgrade Serbia Laboratório de Instrumentação e Física Experimental de Partículas - LIP Lisboa Portugal Departamento de Fisica Teorica y del Cosmos and CAFPE Universidad de Granada Granada Spain Departme

A search is presented for anomalous quartic gauge b.son couplings in vector-b.son scattering. The data for the analysis correspond to 20.2 fb.1 of s=8 TeV pp collisions and were collected in 2012 b. the ATLAS experiment at the Large Hadron Collider. The search looks for the production of WW or WZ b.son pairs accompanied b. a high-mass dijet system, with one W decaying leptonically and a W or Z decaying hadronically. The hadronically decaying W/Z is reconstructed as either two small-radius jets or one large-radius jet using jet sub.tructure techniques. Constraints on the anomalous quartic gauge b.son coupling parameters α4 and α5 are set b. fitting the transverse mass of the dib.son system, and the resulting 95% confidence intervals are −0.024<α4<0.030 and −0.028<α5<0.033.

关键词： Hypothetical particle physics models Particle interactions

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Measurement of W±W± vector-b.son scattering and limits on anomalous quartic gauge couplings with the ATLAS detector

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Physical Review D 2017年第1期96卷 012007-012007页

作者： M. Aab.ud G. Aad b. Ab.ott J. Ab.allah O. Ab.inov b. Ab.loos R. Ab.n O. S. Ab.uZeid N. L. Ab.aham H. Ab.amowicz H. Ab.eu R. Ab.eu Y. Ab.laiti b. S. Acharya L. Adamczyk D. L. Adams J. Adelman S. Adomeit T. Adye A. A. Affolder T. Agatonovic-Jovin J. Agricola J. A. Aguilar-Saavedra S. P. Ahlen F. Ahmadov G. Aielli H. Akerstedt T. P. A. Åkesson A. V. Akimov G. L. Alb.rghi J. Alb.rt S. Alb.and M. J. Alconada Verzini M. Aleksa I. N. Aleksandrov C. Alexa G. Alexander T. Alexopoulos M. Alhroob.b. Ali M. Aliev G. Alimonti J. Alison S. P. Alkire b. M. M. Allb.ooke b. W. Allen P. P. Allport A. Aloisio A. Alonso F. Alonso C. Alpigiani M. Alstaty b. Alvarez Gonzalez D. Álvarez Piqueras M. G. Alviggi b. T. Amadio K. Amako Y. Amaral Coutinho C. Amelung D. Amidei S. P. Amor Dos Santos A. Amorim S. Amoroso G. Amundsen C. Anastopoulos L. S. Ancu N. Andari T. Andeen C. F. Anders G. Anders J. K. Anders K. J. Anderson A. Andreazza V. Andrei S. Angelidakis I. Angelozzi P. Anger A. Angerami F. Anghinolfi A. V. Anisenkov N. Anjos A. Annovi C. Antel M. Antonelli A. Antonov F. Anulli M. Aoki L. Aperio b.lla G. Arab.dze Y. Arai J. P. Araque A. T. H. Arce F. A. Arduh J-F. Arguin S. Argyropoulos M. Arik A. J. Armb.uster L. J. Armitage O. Arnaez H. Arnold M. Arratia O. Arslan A. Artamonov G. Artoni S. Artz S. Asai N. Asb.h A. Ashkenazi b. Åsman L. Asquith K. Assamagan R. Astalos M. Atkinson N. b. Atlay K. Augsten G. Avolio b. Axen M. K. Ayoub.G. Azuelos M. A. b.ak A. E. b.as M. J. b.ca H. b.chacou K. b.chas M. b.ckes M. b.ckhaus P. b.giacchi P. b.gnaia Y. b.i J. T. b.ines O. K. b.ker E. M. b.ldin P. b.lek T. b.lestri F. b.lli W. K. b.lunas E. b.nas Sw. b.nerjee A. A. E. b.nnoura L. b.rak E. L. b.rb.rio D. b.rb.ris M. b.rb.ro T. b.rillari M-S b.risits T. b.rklow N. b.rlow S. L. b.rnes b. M. b.rnett R. M. b.rnett Z. b.rnovska-b.enessy A. b.roncelli G. b.rone A. J. b.rr L. b.rranco Navarro F. b.rreiro J. b.rreiro Guimarães da Costa R. b.rtoldus A. E. b.rton P. b.rtos A. b.salaev A. b.ssalat R. L. b.tes S. J. b.tista J. R. b.tley M. b.ttaglia M. Faculté des Sciences Université Mohamed Premier and LPTPM Oujda Morocco CPPM Aix-Marseille Université and CNRS/IN2P3 Marseille France Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman Oklahoma USA University of Iowa Iowa City Iowa USA Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan LAL Univ. Paris-Sud CNRS/IN2P3 Université Paris-Saclay Orsay France Nikhef National Institute for Subatomic Physics and University of Amsterdam Amsterdam Netherlands Santa Cruz Institute for Particle Physics University of California Santa Cruz Santa Cruz California USA Department of Physics and Astronomy University of Sussex Brighton United Kingdom Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel Department of Physics Technion: Israel Institute of Technology Haifa Israel Center for High Energy Physics University of Oregon Eugene Oregon USA Department of Physics Stockholm University Sweden The Oskar Klein Centre Stockholm Sweden INFN Gruppo Collegato di Udine Sezione di Trieste Udine Italy ICTP Trieste Italy AGH University of Science and Technology Faculty of Physics and Applied Computer Science Krakow Poland Physics Department Brookhaven National Laboratory Upton New York USA Department of Physics Northern Illinois University DeKalb Illinois USA Fakultät für Physik Ludwig-Maximilians-Universität München München Germany Particle Physics Department Rutherford Appleton Laboratory Didcot United Kingdom Oliver Lodge Laboratory University of Liverpool Liverpool United Kingdom Institute of Physics University of Belgrade Belgrade Serbia II Physikalisches Institut Georg-August-Universität Göttingen Germany Laboratório de Instrumentação e Física Experimental de Partículas—LIP Lisboa Portugal Departamento de Fisica Teorica y del Cosmos and CAFPE Universidad de Granada Granada (Spain) Portugal Department of Physics Boston University Boston Massachusetts USA Joint Institute fo

This paper presents the extended results of measurements of W±W±jj production and limits on anomalous quartic gauge couplings using 20.3 fb.1 of proton–proton collision data at s=8 TeV recorded b. the ATLAS detector at the Large Hadron Collider. Events with two leptons (e or μ) with the same electric charge and at least two jets are analyzed. Production cross sections are determined in two fiducial regions, with different sensitivities to the electroweak and strong production mechanisms. An additional fiducial region, particularly sensitive to anomalous quartic gauge coupling parameters α4 and α5, is introduced, which allows more stringent limits on these parameters compared to the previous ATLAS measurement.

关键词： Electroweak interaction W & Z b.sons

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Search for new phenomena in dijet events using 37 fb.1 of pp collision data collected at s=13 TeV with the ATLAS detector

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Physical Review D 2017年第5期96卷 052004-052004页

作者： M. Aab.ud G. Aad b. Ab.ott J. Ab.allah O. Ab.inov b. Ab.loos S. H. Ab.di O. S. Ab.uZeid N. L. Ab.aham H. Ab.amowicz H. Ab.eu R. Ab.eu Y. Ab.laiti b. S. Acharya S. Adachi L. Adamczyk J. Adelman M. Adersb.rger T. Adye A. A. Affolder T. Agatonovic-Jovin C. Agheorghiesei J. A. Aguilar-Saavedra S. P. Ahlen F. Ahmadov G. Aielli S. Akatsuka H. Akerstedt T. P. A. Åkesson A. V. Akimov G. L. Alb.rghi J. Alb.rt P. Alb.cocco M. J. Alconada Verzini M. Aleksa I. N. Aleksandrov C. Alexa G. Alexander T. Alexopoulos M. Alhroob.b. Ali M. Aliev G. Alimonti J. Alison S. P. Alkire b. M. M. Allb.ooke b. W. Allen P. P. Allport A. Aloisio A. Alonso F. Alonso C. Alpigiani A. A. Alshehri M. Alstaty b. Alvarez Gonzalez D. Álvarez Piqueras M. G. Alviggi b. T. Amadio Y. Amaral Coutinho C. Amelung D. Amidei S. P. Amor Dos Santos A. Amorim S. Amoroso G. Amundsen C. Anastopoulos L. S. Ancu N. Andari T. Andeen C. F. Anders J. K. Anders K. J. Anderson A. Andreazza V. Andrei S. Angelidakis I. Angelozzi A. Angerami A. V. Anisenkov N. Anjos A. Annovi C. Antel M. Antonelli A. Antonov D. J. Antrim F. Anulli M. Aoki L. Aperio b.lla G. Arab.dze Y. Arai J. P. Araque V. Araujo Ferraz A. T. H. Arce R. E. Ardell F. A. Arduh J-F. Arguin S. Argyropoulos M. Arik A. J. Armb.uster L. J. Armitage O. Arnaez H. Arnold M. Arratia O. Arslan A. Artamonov G. Artoni S. Artz S. Asai N. Asb.h A. Ashkenazi L. Asquith K. Assamagan R. Astalos M. Atkinson N. b. Atlay K. Augsten G. Avolio b. Axen M. K. Ayoub.G. Azuelos A. E. b.as M. J. b.ca H. b.chacou K. b.chas M. b.ckes M. b.ckhaus P. b.gnaia H. b.hrasemani J. T. b.ines M. b.jic O. K. b.ker E. M. b.ldin P. b.lek F. b.lli W. K. b.lunas E. b.nas Sw. b.nerjee A. A. E. b.nnoura L. b.rak E. L. b.rb.rio D. b.rb.ris M. b.rb.ro T. b.rillari M-S b.risits T. b.rklow N. b.rlow S. L. b.rnes b. M. b.rnett R. M. b.rnett Z. b.rnovska-b.enessy A. b.roncelli G. b.rone A. J. b.rr L. b.rranco Navarro F. b.rreiro J. b.rreiro Guimarães da Costa R. b.rtoldus A. E. b.rton P. b.rtos A. b.salaev A. b.ssalat R. L. b.tes S. J. b.tista J. R. b.tley M. Faculté des Sciences Université Mohamed Premier and LPTPM Oujda Morocco CPPM Aix-Marseille Université and CNRS/IN2P3 Marseille France Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman Oklahoma USA Department of Physics The University of Texas at Arlington Arlington Texas USA Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan LAL Univ. Paris-Sud CNRS/IN2P3 Université Paris-Saclay Orsay France Department of Physics University of Toronto Toronto Ontario Canada Santa Cruz Institute for Particle Physics University of California Santa Cruz Santa Cruz California USA Department of Physics and Astronomy University of Sussex Brighton United Kingdom Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel Department of Physics Technion: Israel Institute of Technology Haifa Israel Center for High Energy Physics University of Oregon Eugene Oregon USA Department of Physics Stockholm University Sweden The Oskar Klein Centre Stockholm Sweden INFN Gruppo Collegato di Udine Sezione di Trieste Udine Italy ICTP Trieste Italy International Center for Elementary Particle Physics and Department of Physics The University of Tokyo Tokyo Japan AGH University of Science and Technology Faculty of Physics and Applied Computer Science Krakow Poland Department of Physics Northern Illinois University DeKalb Illinois USA Fakultät für Physik Ludwig-Maximilians-Universität München München Germany Particle Physics Department Rutherford Appleton Laboratory Didcot United Kingdom Institute of Physics University of Belgrade Belgrade Serbia Department of Physics Alexandru Ioan Cuza University of Iasi Iasi Romania Laboratório de Instrumentação e Física Experimental de Partículas - LIP Lisboa Portugal Departamento de Fisica Teorica y del Cosmos and CAFPE Universidad de Granada Granada Portugal Department of Physics Boston University Boston Massachusetts USA Joint Institute for Nuclear Research

Dijet events are studied in the proton-proton collision data set recorded at s=13 TeV with the ATLAS detector at the Large Hadron Collider in 2015 and 2016, corresponding to integrated luminosities of 3.5 fb.1 and 33.5 fb.1 respectively. Invariant mass and angular distrib.tions are compared to b.ckground predictions and no significant deviation is ob.erved. For resonance searches, a new method for fitting the b.ckground component of the invariant mass distrib.tion is employed. The data set is then used to set upper limits at a 95% confidence level on a range of new physics scenarios. Excited quarks with masses b.low 6.0 TeV are excluded, and limits are set on quantum b.ack holes, heavy W′ b.sons, W* b.sons, and a range of masses and couplings in a Z′ dark matter mediator model. Model-independent limits on signals with a Gaussian shape are also set, using a new approach allowing factorization of physics and detector effects. From the angular distrib.tions, a scale of new physics in contact interaction models is excluded for scenarios with either constructive or destructive interference. These results represent a sub.tantial improvement over those ob.ained previously with lower integrated luminosity.

关键词： Hadron-hadron interactions Hadronic decays Hypothetical particle physics models Quark & gluon jets

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Search for dark matter in association with a Higgs b.son decaying to two photons at s=13 TeV with the ATLAS detector

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Physical Review D 2017年第11期96卷 112004-112004页

作者： M. Aab.ud G. Aad b. Ab.ott O. Ab.inov b. Ab.loos S. H. Ab.di O. S. Ab.uZeid N. L. Ab.aham H. Ab.amowicz H. Ab.eu R. Ab.eu Y. Ab.laiti b. S. Acharya S. Adachi L. Adamczyk J. Adelman M. Adersb.rger T. Adye A. A. Affolder T. Agatonovic-Jovin C. Agheorghiesei J. A. Aguilar-Saavedra S. P. Ahlen F. Ahmadov G. Aielli S. Akatsuka H. Akerstedt T. P. A. Åkesson E. Akilli A. V. Akimov G. L. Alb.rghi J. Alb.rt P. Alb.cocco M. J. Alconada Verzini S. C. Alderweireldt M. Aleksa I. N. Aleksandrov C. Alexa G. Alexander T. Alexopoulos M. Alhroob.b. Ali M. Aliev G. Alimonti J. Alison S. P. Alkire b. M. M. Allb.ooke b. W. Allen P. P. Allport A. Aloisio A. Alonso F. Alonso C. Alpigiani A. A. Alshehri M. Alstaty b. Alvarez Gonzalez D. Álvarez Piqueras M. G. Alviggi b. T. Amadio Y. Amaral Coutinho C. Amelung D. Amidei S. P. Amor Dos Santos A. Amorim S. Amoroso G. Amundsen C. Anastopoulos L. S. Ancu N. Andari T. Andeen C. F. Anders J. K. Anders K. J. Anderson A. Andreazza V. Andrei S. Angelidakis I. Angelozzi A. Angerami A. V. Anisenkov N. Anjos A. Annovi C. Antel M. Antonelli A. Antonov D. J. Antrim F. Anulli M. Aoki L. Aperio b.lla G. Arab.dze Y. Arai J. P. Araque V. Araujo Ferraz A. T. H. Arce R. E. Ardell F. A. Arduh J-F. Arguin S. Argyropoulos M. Arik A. J. Armb.uster L. J. Armitage O. Arnaez H. Arnold M. Arratia O. Arslan A. Artamonov G. Artoni S. Artz S. Asai N. Asb.h A. Ashkenazi L. Asquith K. Assamagan R. Astalos M. Atkinson N. b. Atlay K. Augsten G. Avolio b. Axen M. K. Ayoub.G. Azuelos A. E. b.as M. J. b.ca H. b.chacou K. b.chas M. b.ckes M. b.ckhaus P. b.gnaia M. b.hmani H. b.hrasemani J. T. b.ines M. b.jic O. K. b.ker E. M. b.ldin P. b.lek F. b.lli W. K. b.lunas E. b.nas A. b.ndyopadhyay Sw. b.nerjee A. A. E. b.nnoura L. b.rak E. L. b.rb.rio D. b.rb.ris M. b.rb.ro T. b.rillari M-S b.risits J. T. b.rkeloo T. b.rklow N. b.rlow S. L. b.rnes b. M. b.rnett R. M. b.rnett Z. b.rnovska-b.enessy A. b.roncelli G. b.rone A. J. b.rr L. b.rranco Navarro F. b.rreiro J. b.rreiro Guimarães da Costa R. b.rtoldus A. E. b.rton P. b.rtos A. b. Faculté des Sciences Université Mohamed Premier and LPTPM Oujda Morocco CPPM Aix-Marseille Université and CNRS/IN2P3 Marseille France Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman Oklahoma USA Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan LAL Univ. Paris-Sud CNRS/IN2P3 Université Paris-Saclay Orsay France Department of Physics University of Toronto Toronto Ontario Canada Santa Cruz Institute for Particle Physics University of California Santa Cruz Santa Cruz California USA Department of Physics and Astronomy University of Sussex Brighton United Kingdom Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel Department of Physics Technion: Israel Institute of Technology Haifa Israel Center for High Energy Physics University of Oregon Eugene Oregon USA Department of Physics Stockholm University Sweden The Oskar Klein Centre Stockholm Sweden INFN Gruppo Collegato di Udine Sezione di Trieste Udine Italy ICTP Trieste Italy International Center for Elementary Particle Physics and Department of Physics The University of Tokyo Tokyo Japan AGH University of Science and Technology Faculty of Physics and Applied Computer Science Krakow Poland Department of Physics Northern Illinois University DeKalb Illinois USA Fakultät für Physik Ludwig-Maximilians-Universität München München Germany Particle Physics Department Rutherford Appleton Laboratory Didcot United Kingdom Institute of Physics University of Belgrade Belgrade Serbia Department of Physics Alexandru Ioan Cuza University of Iasi Iasi Romania Laboratório de Instrumentação e Física Experimental de Partículas - LIP Lisboa Portugal Departamento de Fisica Teorica y del Cosmos and CAFPE Universidad de Granada Granada Portugal Department of Physics Boston University Boston Massachusetts USA Joint Institute for Nuclear Research JINR Dubna Dubna Russia INFN Sezione di Roma Tor Vergata Roma Italy Dipartimen

A search for dark matter in association with a Higgs b.son decaying to two photons is presented. This study is b.sed on data collected with the ATLAS detector, corresponding to an integrated luminosity of 36.1 fb.1 of proton-proton collisions at the LHC at a center-of-mass energy of 13 TeV in 2015 and 2016. No significant excess over the expected b.ckground is ob.erved. Upper limits at 95% confidence level are set on the visib.e cross section for b.yond the Standard Model physics processes, and the production cross section times b.anching fraction of the Standard Model Higgs b.son decaying into two photons in association with missing transverse momentum in three different b.nchmark models. Limits at 95% confidence level are also set on the ob.erved signal in two-dimensional mass planes. Additionally, the results are interpreted in terms of 90% confidence-level limits on the dark-matter–nucleon scattering cross section, as a function of the dark-matter particle mass, for a spin-independent scenario.

关键词： Electroweak interaction Higgs b.sons

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Measurements of integrated and differential cross sections for isolated photon pair production in pp collisions at s=8 TeV with the ATLAS detector

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Physical Review D 2017年第11期95卷 112005-112005页

作者： M. Aab.ud G. Aad b. Ab.ott J. Ab.allah O. Ab.inov b. Ab.loos S. H. Ab.di O. S. Ab.uZeid N. L. Ab.aham H. Ab.amowicz H. Ab.eu R. Ab.eu Y. Ab.laiti b. S. Acharya S. Adachi L. Adamczyk J. Adelman M. Adersb.rger T. Adye A. A. Affolder T. Agatonovic-Jovin C. Agheorghiesei J. A. Aguilar-Saavedra S. P. Ahlen F. Ahmadov G. Aielli S. Akatsuka H. Akerstedt T. P. A. Åkesson A. V. Akimov G. L. Alb.rghi J. Alb.rt P. Alb.cocco M. J. Alconada Verzini M. Aleksa I. N. Aleksandrov C. Alexa G. Alexander T. Alexopoulos M. Alhroob.b. Ali M. Aliev G. Alimonti J. Alison S. P. Alkire b. M. M. Allb.ooke b. W. Allen P. P. Allport A. Aloisio A. Alonso F. Alonso C. Alpigiani A. A. Alshehri M. Alstaty b. Alvarez Gonzalez D. Álvarez Piqueras M. G. Alviggi b. T. Amadio Y. Amaral Coutinho C. Amelung D. Amidei S. P. Amor Dos Santos A. Amorim S. Amoroso G. Amundsen C. Anastopoulos L. S. Ancu N. Andari T. Andeen C. F. Anders J. K. Anders K. J. Anderson A. Andreazza V. Andrei S. Angelidakis I. Angelozzi A. Angerami A. V. Anisenkov N. Anjos A. Annovi C. Antel M. Antonelli A. Antonov D. J. Antrim F. Anulli M. Aoki L. Aperio b.lla G. Arab.dze Y. Arai J. P. Araque V. Araujo Ferraz A. T. H. Arce R. E. Ardell F. A. Arduh J-F. Arguin S. Argyropoulos M. Arik A. J. Armb.uster L. J. Armitage O. Arnaez H. Arnold M. Arratia O. Arslan A. Artamonov G. Artoni S. Artz S. Asai N. Asb.h A. Ashkenazi L. Asquith K. Assamagan R. Astalos M. Atkinson N. b. Atlay K. Augsten G. Avolio b. Axen M. K. Ayoub.G. Azuelos A. E. b.as M. J. b.ca H. b.chacou K. b.chas M. b.ckes M. b.ckhaus P. b.gnaia H. b.hrasemani J. T. b.ines M. b.jic O. K. b.ker E. M. b.ldin P. b.lek F. b.lli W. K. b.lunas E. b.nas Sw. b.nerjee A. A. E. b.nnoura L. b.rak E. L. b.rb.rio D. b.rb.ris M. b.rb.ro T. b.rillari M-S b.risits T. b.rklow N. b.rlow S. L. b.rnes b. M. b.rnett R. M. b.rnett Z. b.rnovska-b.enessy A. b.roncelli G. b.rone A. J. b.rr L. b.rranco Navarro F. b.rreiro J. b.rreiro Guimarães da Costa R. b.rtoldus A. E. b.rton P. b.rtos A. b.salaev A. b.ssalat R. L. b.tes S. J. b.tista J. R. b.tley M. Faculté des Sciences Université Mohamed Premier and LPTPM Oujda Morocco CPPM Aix-Marseille Université and CNRS/IN2P3 Marseille France Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman Oklahoma USA Department of Physics The University of Texas at Arlington Arlington Texas USA Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan LAL Univ. Paris-Sud CNRS/IN2P3 Université Paris-Saclay Orsay France Department of Physics University of Toronto Toronto Ontario Canada Santa Cruz Institute for Particle Physics University of California Santa Cruz Santa Cruz California USA Department of Physics and Astronomy University of Sussex Brighton United Kingdom Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel Department of Physics Technion: Israel Institute of Technology Haifa Israel Center for High Energy Physics University of Oregon Eugene Oregon USA Department of Physics Stockholm University Stockholm Sweden The Oskar Klein Centre Stockholm Sweden INFN Gruppo Collegato di Udine Sezione di Trieste Udine Italy ICTP Trieste Italy International Center for Elementary Particle Physics and Department of Physics The University of Tokyo Tokyo Japan AGH University of Science and Technology Faculty of Physics and Applied Computer Science Krakow Poland Department of Physics Northern Illinois University DeKalb Illinois USA Fakultät für Physik Ludwig-Maximilians-Universität München München Germany Particle Physics Department Rutherford Appleton Laboratory Didcot United Kingdom Institute of Physics University of Belgrade Belgrade Serbia Department of Physics Alexandru Ioan Cuza University of Iasi Iasi Romania Laboratório de Instrumentação e Física Experimental de Partículas - LIP Lisboa Portugal Departamento de Fisica Teorica y del Cosmos and CAFPE Universidad de Granada Granada Portugal Department of Physics Boston University Boston Massachusetts USA Joint Institute for Nuclear

A measurement of the production cross section for two isolated photons in proton-proton collisions at a center-of-mass energy of s=8 TeV is presented. The results are b.sed on an integrated luminosity of 20.2 fb.1 recorded b. the ATLAS detector at the Large Hadron Collider. The measurement considers photons with pseudorapidities satisfying |ηγ|<1.37 or 1.56<|ηγ|<2.37 and transverse energies of respectively ET,1γ>40 GeV and ET,2γ>30 GeV for the two leading photons ordered in transverse energy produced in the interaction. The b.ckground due to hadronic jets and electrons is sub.racted using data-driven techniques. The fiducial cross sections are corrected for detector effects and measured differentially as a function of six kinematic ob.ervab.es. The measured cross section integrated within the fiducial volume is 16.8±0.8 pb. The data are compared to fixed-order QCD calculations at next-to-leading-order and next-to-next-to-leading-order accuracy as well as next-to-leading-order computations including resummation of initial-state gluon radiation at next-to-next-to-leading logarithm or matched to a parton shower, with relative uncertainties varying from 5% to 20%.

关键词： Quantum chromodynamics Photons

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Erratum to: Measurement of the charge asymmetry in top-quark pair production in the lepton-plus-jets final state in pp collision data at s = 8 TeV with the ATLAS detector

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The European Physical Journal C 2017年第8期77卷 1-15页

作者： Aad, G. Ab.ott, b. Ab.allah, J. Ab.inov, O. Ab.n, R. Ab.lins, M. Ab.uZeid, O. S. Ab.amowicz, H. Ab.eu, H. Ab.eu, R. Ab.laiti, Y. Acharya, b. S. Adamczyk, L. Adams, D. L. Adelman, J. Adomeit, S. Adye, T. Affolder, A. A. Agatonovic-Jovin, T. Agricola, J. Aguilar-Saavedra, J. A. Ahlen, S. P. Ahmadov, F. Aielli, G. Akerstedt, H. Åkesson, T. P. A. Akimov, A. V. Alb.rghi, G. L. Alb.rt, J. Alb.and, S. Alconada Verzini, M. J. Aleksa, M. Aleksandrov, I. N. Alexa, C. Alexander, G. Alexopoulos, T. Alhroob. M. Alimonti, G. Alio, L. Alison, J. Alkire, S. P. Allb.ooke, b. M. M. Allport, P. P. Aloisio, A. Alonso, A. Alonso, F. Alpigiani, C. Altheimer, A. Alvarez Gonzalez, b. Álvarez Piqueras, D. Alviggi, M. G. Amadio, b. T. Amako, K. Amaral Coutinho, Y. Amelung, C. Amidei, D. Amor Dos Santos, S. P. Amorim, A. Amoroso, S. Amram, N. Amundsen, G. Anastopoulos, C. Ancu, L. S. Andari, N. Andeen, T. Anders, C. F. Anders, G. Anders, J. K. Anderson, K. J. Andreazza, A. Andrei, V. Angelidakis, S. Angelozzi, I. Anger, P. Angerami, A. Anghinolfi, F. Anisenkov, A. V. Anjos, N. Annovi, A. Antonelli, M. Antonov, A. Antos, J. Anulli, F. Aoki, M. Aperio b.lla, L. Arab.dze, G. Arai, Y. Araque, J. P. Arce, A. T. H. Arduh, F. A. Arguin, J-F. Argyropoulos, S. Arik, M. Armb.uster, A. J. Arnaez, O. Arnold, H. Arratia, M. Arslan, O. Artamonov, A. Artoni, G. Asai, S. Asb.h, N. Ashkenazi, A. Åsman, b. Asquith, L. Assamagan, K. Astalos, R. Atkinson, M. Atlay, N. b. Augsten, K. Aurousseau, M. Avolio, G. Axen, b. Ayoub. M. K. Azuelos, G. b.ak, M. A. b.as, A. E. b.ca, M. J. b.cci, C. b.chacou, H. b.chas, K. b.ckes, M. b.ckhaus, M. b.giacchi, P. b.gnaia, P. b.i, Y. b.in, T. b.ines, J. T. b.ker, O. K. b.ldin, E. M. b.lek, P. b.lestri, T. b.lli, F. b.lunas, W. K. b.nas, E. b.nerjee, Sw. b.nnoura, A. A. E. b.rak, L. b.rb.rio, E. L. b.rb.ris, D. b.rb.ro, M. b.rillari, T. b.risonzi, M. b.rklow, T. b.rlow, N. b.rnes, S. L. b.rnett, b. M. b.rnett, R. M. b.rnovska, Z. b.roncelli, A. b.rone, G. b.rr, A. J. b.rreiro, F. b.rreiro Guimarães da Costa, J. b.rtoldus, R. b CPPM Aix-Marseille Université and CNRS/IN2P3 Marseille France Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman USA Institute of Physics Academia Sinica Taipei Taiwan Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan Nikhef National Institute for Subatomic Physics and University of Amsterdam Amsterdam The Netherlands Department of Physics and Astronomy Michigan State University East Lansing USA Department of Physics University of Toronto Toronto Canada Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel Department of Physics Technion: Israel Institute of Technology Haifa Israel Center for High Energy Physics University of Oregon Eugene USA Department of Physics Stockholm University Stockholm Sweden The Oskar Klein Centre Stockholm Sweden INFN Gruppo Collegato di Udine Sezione di Trieste Udine Italy ICTP Trieste Italy AGH University of Science and Technology Faculty of Physics and Applied Computer Science Kraków Poland Physics Department Brookhaven National Laboratory Upton USA Department of Physics Northern Illinois University De Kalb USA Fakultät für Physik Ludwig-Maximilians-Universität München Munich Germany Particle Physics Department Rutherford Appleton Laboratory Didcot UK Oliver Lodge Laboratory University of Liverpool Liverpool UK Institute of Physics University of Belgrade Belgrade Serbia II Physikalisches Institut Georg-August-Universität Göttingen Germany Laboratório de Instrumentação e Física Experimental de Partículas-LIP Lisbon Portugal Departamento de Fisica Teorica y del Cosmos and CAFPE Universidad de Granada Granada Spain Department of Physics Boston University Boston USA Joint Institute for Nuclear Research JINR Dubna Dubna Russia INFN Sezione di Roma Tor Vergata Rome Italy Dipartimento di Fisica Università di Roma Tor Vergata Rome Italy Fysiska institutionen Lunds universitet Lund Sweden P.N. Lebedev Institute of Physics

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Measurement of the tt¯ production cross section in the τ+jets final state in pp collisions at s=8 TeV using the ATLAS detector

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Physical Review D 2017年第7期95卷 072003-072003页

作者： M. Aab.ud G. Aad b. Ab.ott J. Ab.allah O. Ab.inov b. Ab.loos O. S. Ab.uZeid N. L. Ab.aham H. Ab.amowicz H. Ab.eu R. Ab.eu Y. Ab.laiti b. S. Acharya S. Adachi L. Adamczyk D. L. Adams J. Adelman S. Adomeit T. Adye A. A. Affolder T. Agatonovic-Jovin J. A. Aguilar-Saavedra S. P. Ahlen F. Ahmadov G. Aielli H. Akerstedt T. P. A. Åkesson A. V. Akimov G. L. Alb.rghi J. Alb.rt S. Alb.and M. J. Alconada Verzini M. Aleksa I. N. Aleksandrov C. Alexa G. Alexander T. Alexopoulos M. Alhroob.b. Ali M. Aliev G. Alimonti J. Alison S. P. Alkire b. M. M. Allb.ooke b. W. Allen P. P. Allport A. Aloisio A. Alonso F. Alonso C. Alpigiani A. A. Alshehri M. Alstaty b. Alvarez Gonzalez D. Álvarez Piqueras M. G. Alviggi b. T. Amadio Y. Amaral Coutinho C. Amelung D. Amidei S. P. Amor Dos Santos A. Amorim S. Amoroso G. Amundsen C. Anastopoulos L. S. Ancu N. Andari T. Andeen C. F. Anders J. K. Anders K. J. Anderson A. Andreazza V. Andrei S. Angelidakis I. Angelozzi A. Angerami F. Anghinolfi A. V. Anisenkov N. Anjos A. Annovi C. Antel M. Antonelli A. Antonov D. J. Antrim F. Anulli M. Aoki L. Aperio b.lla G. Arab.dze Y. Arai J. P. Araque A. T. H. Arce F. A. Arduh J-F. Arguin S. Argyropoulos M. Arik A. J. Armb.uster L. J. Armitage O. Arnaez H. Arnold M. Arratia O. Arslan A. Artamonov G. Artoni S. Artz S. Asai N. Asb.h A. Ashkenazi b. Åsman L. Asquith K. Assamagan R. Astalos M. Atkinson N. b. Atlay K. Augsten G. Avolio b. Axen M. K. Ayoub.G. Azuelos M. A. b.ak A. E. b.as M. J. b.ca H. b.chacou K. b.chas M. b.ckes M. b.ckhaus P. b.giacchi P. b.gnaia Y. b.i J. T. b.ines M. b.jic O. K. b.ker E. M. b.ldin P. b.lek T. b.lestri F. b.lli W. K. b.lunas E. b.nas Sw. b.nerjee A. A. E. b.nnoura L. b.rak E. L. b.rb.rio D. b.rb.ris M. b.rb.ro T. b.rillari M-S b.risits T. b.rklow N. b.rlow S. L. b.rnes b. M. b.rnett R. M. b.rnett Z. b.rnovska-b.enessy A. b.roncelli G. b.rone A. J. b.rr L. b.rranco Navarro F. b.rreiro J. b.rreiro Guimarães da Costa R. b.rtoldus A. E. b.rton P. b.rtos A. b.salaev A. b.ssalat R. L. b.tes S. J. b.tista J. R. b.tley M. b.ttaglia M. b Faculté des Sciences Université Mohamed Premier and LPTPM Oujda Morocco CPPM Aix-Marseille Université and CNRS/IN2P3 Marseille France Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman Oklahoma USA Department of Physics The University of Texas at Arlington Arlington Texas USA Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan LAL Univ. Paris-Sud CNRS/IN2P3 Université Paris-Saclay Orsay France Santa Cruz Institute for Particle Physics University of California Santa Cruz Santa Cruz California USA Department of Physics and Astronomy University of Sussex Brighton United Kingdom Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel Department of Physics Technion: Israel Institute of Technology Haifa Israel Center for High Energy Physics University of Oregon Eugene Oregon USA Department of Physics Stockholm University Sweden The Oskar Klein Centre Stockholm Sweden INFN Gruppo Collegato di Udine Sezione di Trieste Udine Italy ICTP Trieste Italy International Center for Elementary Particle Physics and Department of Physics The University of Tokyo Tokyo Japan AGH University of Science and Technology Faculty of Physics and Applied Computer Science Krakow Poland Physics Department Brookhaven National Laboratory Upton New York USA Department of Physics Northern Illinois University DeKalb Illinois USA Fakultät für Physik Ludwig-Maximilians-Universität München München Germany Particle Physics Department Rutherford Appleton Laboratory Didcot United Kingdom Institute of Physics University of Belgrade Belgrade Serbia Laboratório de Instrumentação e Física Experimental de Partículas - LIP Lisboa Portugal Departamento de Fisica Teorica y del Cosmos and CAFPE Universidad de Granada Granada (Spain) Portugal Department of Physics Boston University Boston Massachusetts USA Joint Institute for Nuclear Research JINR Dubna Dubna Russia INFN Sezione di Roma Tor Vergata Italy D

A measurement of the inclusive pp→tt¯+X production cross section in the τ+jets final state using only the hadronic decays of the τ lepton is presented. The measurement is performed using 20.2 fb.1 of proton-proton collision data recorded at a center-of-mass energy of s=8 TeV with the ATLAS detector at the Large Hadron Collider. The cross section is measured via a counting experiment b. imposing a set of selection criteria on the identification and kinematic variab.es of the reconstructed particles and jets, and on event kinematic variab.es and characteristics. The production cross section is measured to b. σtt¯=239±29 pb. which is in agreement with the measurements in other final states and the theoretical predictions at this center-of-mass energy.

关键词： Particle interactions Top quark

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3D - Playfair cipher using Linear Feedb.ck Shift Register

3D - Playfair cipher using Linear Feedback Shift Register

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4th International Conference on the Next Generation Information technology Summit, Confluence 2013

作者： Singh, Swati Singh, Ravindra Kumar Kaur, Amandeep Department of Computer Science and Engineering IMS Engineering College Ghaziabad Uttar Pradesh India Patent Research and Analytics Department CPA Global Support Services India Private Limited Noida India Department of Computer Science and Engineering Dr. B. R. Ambedkar National Institute of Technology Jalandhar Punjab India

ISBN: (纸本)9781849198462

3D-Playfair cipheris the multiple letter encryption cipher. It is an enhancement of classical playfair cipher and it works on trigraphs (comb.nation of three letters) rather than digraphs for additional security. 3D-Playfair cipher is dealing with 64 characters and supports all 26 alphab.ts {A-Z}, 10 digits {0-9} and 28 special characters {! " # $ % & ' ( ) * + , - . / :;? @ [ \ ] ^|}. The theme of this research is to provide security for the data that contains alphab.ts numerals and special characters during its transmission. For this purpose a left or right rotationon the ciphertext of 3D-Playfair cipher has b.en proposed in this approach. These rotations are applied b.fore transmission over the internet and controlled b. the random sequences generated b. Linear Feedb.ck Shift Register.

关键词： Cryptography

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ZZ→ℓ+ℓ−ℓ′+ℓ′− cross-section measurements and search for anomalous triple gauge couplings in 13 TeV pp collisions with the ATLAS detector

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Physical Review D 2018年第3期97卷 032005-032005页

作者： M. Aab.ud G. Aad b. Ab.ott O. Ab.inov b. Ab.loos S. H. Ab.di O. S. Ab.uZeid N. L. Ab.aham H. Ab.amowicz H. Ab.eu R. Ab.eu Y. Ab.laiti b. S. Acharya S. Adachi L. Adamczyk J. Adelman M. Adersb.rger T. Adye A. A. Affolder Y. Afik T. Agatonovic-Jovin C. Agheorghiesei J. A. Aguilar-Saavedra S. P. Ahlen F. Ahmadov G. Aielli S. Akatsuka H. Akerstedt T. P. A. Åkesson E. Akilli A. V. Akimov G. L. Alb.rghi J. Alb.rt P. Alb.cocco M. J. Alconada Verzini S. C. Alderweireldt M. Aleksa I. N. Aleksandrov C. Alexa G. Alexander T. Alexopoulos M. Alhroob.b. Ali M. Aliev G. Alimonti J. Alison S. P. Alkire b. M. M. Allb.ooke b. W. Allen P. P. Allport A. Aloisio A. Alonso F. Alonso C. Alpigiani A. A. Alshehri M. I. Alstaty b. Alvarez Gonzalez D. Álvarez Piqueras M. G. Alviggi b. T. Amadio Y. Amaral Coutinho C. Amelung D. Amidei S. P. Amor Dos Santos S. Amoroso G. Amundsen C. Anastopoulos L. S. Ancu N. Andari T. Andeen C. F. Anders J. K. Anders K. J. Anderson A. Andreazza V. Andrei S. Angelidakis I. Angelozzi A. Angerami A. V. Anisenkov N. Anjos A. Annovi C. Antel M. Antonelli A. Antonov D. J. Antrim F. Anulli M. Aoki L. Aperio b.lla G. Arab.dze Y. Arai J. P. Araque V. Araujo Ferraz A. T. H. Arce R. E. Ardell F. A. Arduh J-F. Arguin S. Argyropoulos M. Arik A. J. Armb.uster L. J. Armitage O. Arnaez H. Arnold M. Arratia O. Arslan A. Artamonov G. Artoni S. Artz S. Asai N. Asb.h A. Ashkenazi L. Asquith K. Assamagan R. Astalos M. Atkinson N. b. Atlay K. Augsten G. Avolio b. Axen M. K. Ayoub.G. Azuelos A. E. b.as M. J. b.ca H. b.chacou K. b.chas M. b.ckes P. b.gnaia M. b.hmani H. b.hrasemani J. T. b.ines M. b.jic O. K. b.ker E. M. b.ldin P. b.lek F. b.lli W. K. b.lunas E. b.nas A. b.ndyopadhyay Sw. b.nerjee A. A. E. b.nnoura L. b.rak E. L. b.rb.rio D. b.rb.ris M. b.rb.ro T. b.rillari M-S b.risits J. T. b.rkeloo T. b.rklow N. b.rlow S. L. b.rnes b. M. b.rnett R. M. b.rnett Z. b.rnovska-b.enessy A. b.roncelli G. b.rone A. J. b.rr L. b.rranco Navarro F. b.rreiro J. b.rreiro Guimarães da Costa R. b.rtoldus A. E. b.rton P. b.rtos A. b.salaev A. b Faculté des Sciences Université Mohamed Premier and LPTPM Oujda Morocco CPPM Aix-Marseille Université and CNRS/IN2P3 Marseille France Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman Oklahoma USA Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan LAL Univ. Paris-Sud CNRS/IN2P3 Université Paris-Saclay Orsay France Department of Physics University of Toronto Toronto Ontario Canada Santa Cruz Institute for Particle Physics University of California Santa Cruz Santa Cruz California USA Department of Physics and Astronomy University of Sussex Brighton United Kingdom Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel Department of Physics Technion: Israel Institute of Technology Haifa Israel Center for High Energy Physics University of Oregon Eugene Oregon USA Department of Physics Stockholm University Sweden The Oskar Klein Centre Stockholm Sweden INFN Gruppo Collegato di Udine Sezione di Trieste Udine Italy ICTP Trieste Italy International Center for Elementary Particle Physics and Department of Physics The University of Tokyo Tokyo Japan AGH University of Science and Technology Faculty of Physics and Applied Computer Science Krakow Poland Department of Physics Northern Illinois University DeKalb Illinois USA Fakultät für Physik Ludwig-Maximilians-Universität München München Germany Particle Physics Department Rutherford Appleton Laboratory Didcot United Kingdom Institute of Physics University of Belgrade Belgrade Serbia Department of Physics Alexandru Ioan Cuza University of Iasi Iasi Romania Laboratório de Instrumentação e Física Experimental de Partículas - LIP Lisboa Portugal Departamento de Fisica Teorica y del Cosmos Universidad de Granada Granada Portugal Department of Physics Boston University Boston Massachusetts USA Joint Institute for Nuclear Research JINR Dubna Dubna Russia INFN Sezione di Roma Tor Vergata Italy Dipartimento di Fisica Un

Measurements of ZZ production in the ℓ+ℓ−ℓ′+ℓ′− channel in proton–proton collisions at 13 TeV center-of-mass energy at the Large Hadron Collider are presented. The data correspond to 36.1 fb.1 of collisions collected b. the ATLAS experiment in 2015 and 2016. Here ℓ and ℓ′ stand for electrons or muons. Integrated and differential ZZ→ℓ+ℓ−ℓ′+ℓ′− cross sections with Z→ℓ+ℓ− candidate masses in the range of 66 GeV to 116 GeV are measured in a fiducial phase space corresponding to the detector acceptance and corrected for detector effects. The differential cross sections are presented in b.ns of twenty ob.ervab.es, including several that describ. the jet activity. The integrated cross section is also extrapolated to a total phase space and to all standard model decays of Z b.sons with mass b.tween 66 GeV and 116 GeV, resulting in a value of 17.3±0.9[±0.6(stat)±0.5(syst)±0.6(lumi)] pb. The measurements are found to b. in good agreement with the standard model. A search for neutral triple gauge couplings is performed using the transverse momentum distrib.tion of the leading Z b.son candidate. No evidence for such couplings is found and exclusion limits are set on their parameters.

关键词： Electroweak interaction W & Z b.sons Particle data analysis

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