检索结果-内蒙古大学图书馆

Search for resonant WZ production in the WZ→lνl′l′ channel in (s)=7 TeV pp collisions with the ATLAS detector

Physical Review D 2012年第11期85卷 112012-112012页

作者： G. Aad b. Abbott J. Abdallah S. Ab.el Khalek A. A. Ab.elalim A. Ab.esselam O. Abdinov b. Abi M. Abolins O. S. AbouZeid H. Abramowicz H. Ab.eu e. Acerbi b. S. Acharya L. Adamczyk D. L. Adams T. N. Addy J. Adelman M. Aderholz S. Adomeit P. Adragna T. Adye S. Aefsky J. A. Aguilar-Saavedra M. Aharrouche S. P. Ahlen F. Ahles A. Ahmad M. Ahsan G. Aielli T. Akdogan T. P. A. Åkesson G. Akimoto A. V. Akimov A. Akiyama M. S. Alam M. A. Alam J. Albert S. Albrand M. Aleksa I. N. Aleksandrov F. Alessandria C. Alexa G. Alexander G. Alexandre T. Alexopoulos M. Alhroob M. Aliev G. Alimonti J. Alison M. Aliyev b. M. M. Allbrooke P. P. Allport S. e. Allwood-Spiers J. Almond A. Aloisio R. Alon A. Alonso b. Alvarez Gonzalez M. G. Alviggi K. Amako P. Amaral C. Amelung V. V. Ammosov A. Amorim G. Amorós N. Amram C. Anastopoulos L. S. Ancu N. Andari T. Andeen C. F. Anders G. Anders K. J. Anderson A. Andreazza V. Andrei M-L. Andrieux X. S. Anduaga A. Angerami F. Anghinolfi A. Anisenkov N. Anjos A. Annovi A. Antonaki M. Antonelli A. Antonov J. Antos F. Anulli S. Aoun L. Aperio bella R. Apolle G. Arabidze I. Aracena Y. Arai A. T. H. Arce S. Arfaoui J-F. Arguin e. Arik M. Arik A. J. Armbruster O. Arnaez V. Arnal C. Arnault A. Artamonov G. Artoni D. Arutinov S. Asai R. Asfandiyarov S. Ask b. Åsman L. Asquith K. Assamagan A. Astbury b. Aubert e. Auge K. Augsten M. Aurousseau G. Avolio R. Avramidou D. Axen C. Ay G. Azuelos Y. Azuma M. A. baak G. baccaglioni C. bacci A. M. bach H. bachacou K. bachas M. backes M. backhaus e. badescu P. bagnaia S. bahinipati Y. bai D. C. bailey T. bain J. T. baines O. K. baker M. D. baker S. baker e. banas P. banerjee Sw. banerjee D. banfi A. bangert V. bansal H. S. bansil L. barak S. P. baranov A. barashkou A. barbaro Galtieri T. barber e. L. barberio D. barberis M. barbero D. Y. bardin T. barillari M. barisonzi T. barklow N. barlow b. M. barnett R. M. barnett A. baroncelli G. barone A. J. barr F. barreiro J. barreiro Guimarães da Costa P. barrillon R. bartoldus A. e. barton V. bartsch R. L. bates L. batkova J. Fakultät für Mathematik und Physik Albert-Ludwigs-Universität Freiburg Germany Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman Oklahoma USA Institut de Física d’Altes Energies and Departament de Física de la Universitat Autònoma de Barcelona and ICREA Barcelona Spain LAL Univ. Paris-Sud and CNRS/IN2P3 Orsay France Section de Physique Université de Genève Geneva Switzerland Department of Physics Oxford University Oxford United Kingdom Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan Department of Physics Oklahoma State University Stillwater Oklahoma USA Department of Physics and Astronomy Michigan State University East Lansing Michigan USA Department of Physics University of Toronto Toronto Ontario Canada Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel DSM/IRFU (Institut de Recherches sur les Lois Fondamentales de l’Univers) CEA Saclay (Commissariat a l’Energie Atomique) Gif-sur-Yvette France INFN Sezione di Milano Italy Dipartimento di Fisica Università di Milano Milano Italy INFN Gruppo Collegato di 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 Hampton University Hampton Virginia USA Department of Physics Yale University New Haven Connecticut USA Max-Planck-Institut für Physik (Werner-Heisenberg-Institut) München Germany Fakultät für Physik Ludwig-Maximilians-Universität München München Germany School of Physics and Astronomy Queen Mary University of London London United Kingdom Particle Physics Department Rutherford Appleton Laboratory Didcot United Kingdom Department of Physics Brandeis University Waltham Massachusetts USA Departamento de Fisica Teorica y del Cosmos and CAFPE Universidad de Granada Granada Spain Institut für Physik Universität Mainz Mainz

A generic search is presented for a heavy particle decaying to WZ→ℓνℓ′ℓ′ (ℓ, ℓ′=e, μ) final states. The data were recorded by the ATLAS detector in s=7 TeV pp collisions at the Large Hadron Collider and correspond to an integrated luminosity of 1.02 fb−1. The transverse mass distribution of the selected WZ candidates is found to be consistent with the standard model expectation. Upper limits on the production cross section times branching ratio are derived using two benchmark models predicting a heavy particle decaying to a WZ pair.

关键词： COLLISIONS (Nuclear physics) PReDICTION (Logic) PARTICLeS (Nuclear physics) RADIOACTIVe decay STANDARD model (Nuclear physics) ATOMIC mass CROSS sections (Nuclear physics)

来源：评论

学校读者我要写书评

暂无评论

Search for supersymmetry in pp collisions at s=7 TeV in final states with missing transverse momentum and b-jets with the ATLAS detector

引用

Physical Review D 2012年第11期85卷 112006-112006页

作者： G. Aad b. Abbott J. Abdallah S. Ab.el Khalek A. A. Ab.elalim A. Ab.esselam O. Abdinov b. Abi M. Abolins O. S. AbouZeid H. Abramowicz H. Ab.eu e. Acerbi b. S. Acharya L. Adamczyk D. L. Adams T. N. Addy J. Adelman M. Aderholz S. Adomeit P. Adragna T. Adye S. Aefsky J. A. Aguilar-Saavedra M. Aharrouche S. P. Ahlen F. Ahles A. Ahmad M. Ahsan G. Aielli T. Akdogan T. P. A. Åkesson G. Akimoto A. V. Akimov A. Akiyama M. S. Alam M. A. Alam J. Albert S. Albrand M. Aleksa I. N. Aleksandrov F. Alessandria C. Alexa G. Alexander G. Alexandre T. Alexopoulos M. Alhroob M. Aliev G. Alimonti J. Alison M. Aliyev b. M. M. Allbrooke P. P. Allport S. e. Allwood-Spiers J. Almond A. Aloisio R. Alon A. Alonso b. Alvarez Gonzalez M. G. Alviggi K. Amako P. Amaral C. Amelung V. V. Ammosov A. Amorim G. Amorós N. Amram C. Anastopoulos L. S. Ancu N. Andari T. Andeen C. F. Anders G. Anders K. J. Anderson A. Andreazza V. Andrei M-L. Andrieux X. S. Anduaga A. Angerami F. Anghinolfi A. Anisenkov N. Anjos A. Annovi A. Antonaki M. Antonelli A. Antonov J. Antos F. Anulli S. Aoun L. Aperio bella R. Apolle G. Arabidze I. Aracena Y. Arai A. T. H. Arce S. Arfaoui J-F. Arguin e. Arik M. Arik A. J. Armbruster O. Arnaez V. Arnal C. Arnault A. Artamonov G. Artoni D. Arutinov S. Asai R. Asfandiyarov S. Ask b. Åsman L. Asquith K. Assamagan A. Astbury A. Astvatsatourov b. Aubert e. Auge K. Augsten M. Aurousseau G. Avolio R. Avramidou D. Axen C. Ay G. Azuelos Y. Azuma M. A. baak G. baccaglioni C. bacci A. M. bach H. bachacou K. bachas M. backes M. backhaus e. badescu P. bagnaia S. bahinipati Y. bai D. C. bailey T. bain J. T. baines O. K. baker M. D. baker S. baker e. banas P. banerjee Sw. banerjee D. banfi A. bangert V. bansal H. S. bansil L. barak S. P. baranov A. barashkou A. barbaro Galtieri T. barber e. L. barberio D. barberis M. barbero D. Y. bardin T. barillari M. barisonzi T. barklow N. barlow b. M. barnett R. M. barnett A. baroncelli G. barone A. J. barr F. barreiro J. barreiro Guimarães da Costa P. barrillon R. bartoldus A. e. barton V. bartsch R. L. ba Fakultät für Mathematik und Physik Albert-Ludwigs-Universität Freiburg i.Br. Germany Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman Oklahoma USA Institut de Física d’Altes Energies and Departament de Física de la Universitat Autònoma de Barcelona and ICREA Barcelona Spain LAL Université Paris-Sud and CNRS/IN2P3 Orsay France Section de Physique Université de Genève Geneva Switzerland Department of Physics Oxford University Oxford United Kingdom Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan Department of Physics Oklahoma State University Stillwater Oklahoma USA Department of Physics and Astronomy Michigan State University East Lansing Michigan USA Department of Physics University of Toronto Toronto ON Canada Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel INFN Sezione di Milano Italy Dipartimento di Fisica Università di Milano Milano Italy INFN Gruppo Collegato di 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 Hampton University Hampton Virginia USA Department of Physics Yale University New Haven Connecticut USA Max-Planck-Institut für Physik (Werner-Heisenberg-Institut) München Germany Fakultät für Physik Ludwig-Maximilians-Universität München München Germany School of Physics and Astronomy Queen Mary University of London London United Kingdom Particle Physics Department Rutherford Appleton Laboratory Didcot United Kingdom Department of Physics Brandeis University Waltham Massachusetts USA Departamento de Fisica Teorica y del Cosmos and CAFPE Universidad de Granada Granada Spain Institut für Physik Universität Mainz Mainz Germany Department of Physics Boston University Boston Massachusetts USA Departments of Physics and Astronomy and Chemistry Stony Brook

The results of a search for supersymmetry in events with large missing transverse momentum and heavy-flavor jets using an integrated luminosity corresponding to 2.05 fb−1 of pp collisions at s=7 TeV recorded with the ATLAS detector at the Large Hadron Collider are reported. No significant excess is ob.erved with respect to the prediction for standard model processes. Results are interpreted in a variety of R-parity conserving models in which scalar bottoms and tops are the only scalar quarks to appear in the gluino decay cascade, and in an SO(10) model framework. Gluino masses up to 600–900 GeV are excluded, depending on the model considered.

关键词： SUPeRSYMMeTRY (Physics) PReDICTION (Logic) JeTS (Nuclear physics) STANDARD model (Nuclear physics) ATOMIC mass NUCLeAR counters COLLIDeRS (Nuclear physics)

来源：评论

学校读者我要写书评

暂无评论

Measurement of the azimuthal anisotropy for charged particle production in sNN=2.76 TeV lead-lead collisions with the ATLAS detector

引用

Physical Review C 2012年第1期86卷 014907-014907页

作者： G. Aad b. Abbott J. Abdallah S. Ab.el Khalek A. A. Ab.elalim A. Ab.esselam O. Abdinov b. Abi M. Abolins O. S. AbouZeid H. Abramowicz H. Ab.eu e. Acerbi b. S. Acharya L. Adamczyk D. L. Adams T. N. Addy J. Adelman M. Aderholz S. Adomeit P. Adragna T. Adye S. Aefsky J. A. Aguilar-Saavedra M. Aharrouche S. P. Ahlen F. Ahles A. Ahmad M. Ahsan G. Aielli T. Akdogan T. P. A. Åkesson G. Akimoto A. V. Akimov A. Akiyama M. S. Alam M. A. Alam J. Albert S. Albrand M. Aleksa I. N. Aleksandrov F. Alessandria C. Alexa G. Alexander G. Alexandre T. Alexopoulos M. Alhroob M. Aliev G. Alimonti J. Alison M. Aliyev b. M. M. Allbrooke P. P. Allport S. e. Allwood-Spiers J. Almond A. Aloisio R. Alon A. Alonso b. Alvarez Gonzalez M. G. Alviggi K. Amako P. Amaral C. Amelung V. V. Ammosov A. Amorim G. Amorós N. Amram C. Anastopoulos L. S. Ancu N. Andari T. Andeen C. F. Anders G. Anders K. J. Anderson A. Andreazza V. Andrei M-L. Andrieux X. S. Anduaga A. Angerami F. Anghinolfi A. Anisenkov N. Anjos A. Annovi A. Antonaki M. Antonelli A. Antonov J. Antos F. Anulli S. Aoun L. Aperio bella R. Apolle G. Arabidze I. Aracena Y. Arai A. T. H. Arce S. Arfaoui J-F. Arguin e. Arik M. Arik A. J. Armbruster O. Arnaez V. Arnal C. Arnault A. Artamonov G. Artoni D. Arutinov S. Asai R. Asfandiyarov S. Ask b. Åsman L. Asquith K. Assamagan A. Astbury A. Astvatsatourov b. Aubert e. Auge K. Augsten M. Aurousseau G. Avolio R. Avramidou D. Axen C. Ay G. Azuelos Y. Azuma M. A. baak G. baccaglioni C. bacci A. M. bach H. bachacou K. bachas M. backes M. backhaus e. badescu P. bagnaia S. bahinipati Y. bai D. C. bailey T. bain J. T. baines O. K. baker M. D. baker S. baker e. banas P. banerjee Sw. banerjee D. banfi A. bangert V. bansal H. S. bansil L. barak S. P. baranov A. barashkou A. barbaro Galtieri T. barber e. L. barberio D. barberis M. barbero D. Y. bardin T. barillari M. barisonzi T. barklow N. barlow b. M. barnett R. M. barnett A. baroncelli G. barone A. J. barr F. barreiro J. barreiro Guimarães da Costa P. barrillon R. bartoldus A. e. barton V. bartsch R. L. ba Fakultät für Mathematik und Physik Albert-Ludwigs-Universität Freiburg Germany Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman Oklahoma USA Institut de Física d'Altes Energies and Departament de Física de la Universitat Autònoma de Barcelona and ICREA Barcelona Spain LAL Univ. Paris-Sud and CNRS/IN2P3 Orsay France Section de Physique Université de Genève Geneva Switzerland Department of Physics Oxford University Oxford United Kingdom Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan Department of Physics Oklahoma State University Stillwater Oklahoma USA Department of Physics and Astronomy Michigan State University East Lansing Michigan USA Department of Physics University of Toronto Toronto Ontario Canada Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel INFN Sezione di Milano Italy Dipartimento di Fisica Università di Milano Milano Italy INFN Gruppo Collegato di 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 Hampton University Hampton Virgina USA Department of Physics Yale University New Haven Connecticut USA Max-Planck-Institut für Physik (Werner-Heisenberg-Institut) München Germany Fakultät für Physik Ludwig-Maximilians-Universität München München Germany School of Physics and Astronomy Queen Mary University of London London United Kingdom Particle Physics Department Rutherford Appleton Laboratory Didcot United Kingdom Department of Physics Brandeis University Waltham Massachusetts USA Departamento de Fisica Teorica y del Cosmos and CAFPE Universidad de Granada Granada Spain Institut für Physik Universität Mainz Mainz Germany Department of Physics Boston University Boston Massachusetts USA Departments of Physics & Astronomy and Chemistry Stony Brook Universi

Differential measurements of charged particle azimuthal anisotropy are presented for lead-lead collisions at sNN=2.76 TeV with the ATLAS detector at the LHC, based on an integrated luminosity of approximately 8 μb−1. This anisotropy is characterized via a Fourier expansion of the distribution of charged particles in azimuthal angle relative to the reaction plane, with the coefficients vn denoting the magnitude of the anisotropy. Significant v2–v6 values are obtained as a function of transverse momentum (0.5eV), pseudorapidity (|η|<2.5), and centrality using an event plane method. The vn values for n≥3 are found to vary weakly with both η and centrality, and their pT dependencies are found to follow an approximate scaling relation, vn1/n(pT)∝v21/2(pT), except in the top 5% most central collisions. A Fourier analysis of the charged particle pair distribution in relative azimuthal angle (Δφ=φa−φb) is performed to extract the coefficients vn,n=〈cosnΔφ〉. For pairs of charged particles with a large pseudorapidity gap (|Δη=ηa−ηb|>2) and one particle with pT<3 GeV, the v2,2–v6,6 values are found to factorize as vn,n(pTa,pTb)≈vn(pTa)vn(pTb) in central and midcentral events. Such factorization suggests that these values of v2,2–v6,6 are primarily attributab.e to the response of the created matter to the fluctuations in the geometry of the initial state. A detailed study shows that the v1,1(pTa,pTb) data are consistent with the combined contributions from a rapidity-even v1 and global momentum conservation. A two-component fit is used to extract the v1 contribution. The extracted v1 is ob.erved to cross zero at pT≈1.0 GeV, reaches a maximum at 4–5 GeV with a value comparab.e to that for v3, and decreases at higher pT.

关键词： AZIMUTH ReSeARCH ANISOTROPY LUMINOSITY LARGe Hadron Collider (France & Switzerland) NUCLeAR research

来源：评论

学校读者我要写书评

暂无评论

Measurement of the production cross section of an isolated photon associated with jets in proton-proton collisions at s=7 TeV with the ATLAS detector

引用

Physical Review D 2012年第9期85卷 092014-092014页

作者： G. Aad b. Abbott J. Abdallah A. A. Ab.elalim A. Ab.esselam O. Abdinov b. Abi M. Abolins O. S. AbouZeid H. Abramowicz H. Ab.eu e. Acerbi b. S. Acharya L. Adamczyk D. L. Adams T. N. Addy J. Adelman M. Aderholz S. Adomeit P. Adragna T. Adye S. Aefsky J. A. Aguilar-Saavedra M. Aharrouche S. P. Ahlen F. Ahles A. Ahmad M. Ahsan G. Aielli T. Akdogan T. P. A. Åkesson G. Akimoto A. V. Akimov A. Akiyama M. S. Alam M. A. Alam J. Albert S. Albrand M. Aleksa I. N. Aleksandrov F. Alessandria C. Alexa G. Alexander G. Alexandre T. Alexopoulos M. Alhroob M. Aliev G. Alimonti J. Alison M. Aliyev b. M. M. Allbrooke P. P. Allport S. e. Allwood-Spiers J. Almond A. Aloisio R. Alon A. Alonso b. Alvarez Gonzalez M. G. Alviggi K. Amako P. Amaral C. Amelung V. V. Ammosov A. Amorim G. Amorós N. Amram C. Anastopoulos L. S. Ancu N. Andari T. Andeen C. F. Anders G. Anders K. J. Anderson A. Andreazza V. Andrei M-L. Andrieux X. S. Anduaga A. Angerami F. Anghinolfi A. Anisenkov N. Anjos A. Annovi A. Antonaki M. Antonelli A. Antonov J. Antos F. Anulli S. Aoun L. Aperio bella R. Apolle G. Arabidze I. Aracena Y. Arai A. T. H. Arce S. Arfaoui J-F. Arguin e. Arik M. Arik A. J. Armbruster O. Arnaez C. Arnault A. Artamonov G. Artoni D. Arutinov S. Asai R. Asfandiyarov S. Ask b. Åsman L. Asquith K. Assamagan A. Astbury A. Astvatsatourov b. Aubert e. Auge K. Augsten M. Aurousseau G. Avolio R. Avramidou D. Axen C. Ay G. Azuelos Y. Azuma M. A. baak G. baccaglioni C. bacci A. M. bach H. bachacou K. bachas M. backes M. backhaus e. badescu P. bagnaia S. bahinipati Y. bai D. C. bailey T. bain J. T. baines O. K. baker M. D. baker S. baker e. banas P. banerjee Sw. banerjee D. banfi A. bangert V. bansal H. S. bansil L. barak S. P. baranov A. barashkou A. barbaro Galtieri T. barber e. L. barberio D. barberis M. barbero D. Y. bardin T. barillari M. barisonzi T. barklow N. barlow b. M. barnett R. M. barnett A. baroncelli G. barone A. J. barr F. barreiro J. barreiro Guimarães da Costa P. barrillon R. bartoldus A. e. barton V. bartsch R. L. bates L. batkova J. R. batl Fakultät für Mathematik und Physik Albert-Ludwigs-Universität Freiburg i. Br. Germany Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman OK United States of America Institut de Física d’Altes Energies and Departament de Física de la Universitat Autònoma de Barcelona and ICREA Barcelona Spain Section de Physique Université de Genève Geneva Switzerland Department of Physics Oxford University Oxford United Kingdom Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan Department of Physics Oklahoma State University Stillwater OK United States of America Department of Physics and Astronomy Michigan State University East Lansing MI United States of America Department of Physics University of Toronto Toronto ON Canada Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel LAL Univ. Paris-Sud and CNRS/IN2P3 Orsay France INFN Sezione di Milano Italy Dipartimento di Fisica Università di Milano Milano Italy INFN Gruppo Collegato di 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 NY United States of America Department of Physics Hampton University Hampton VA United States of America Department of Physics Yale University New Haven CT United States of America Max-Planck-Institut für Physik (Werner-Heisenberg-Institut) München Germany Fakultät für Physik Ludwig-Maximilians-Universität München München Germany School of Physics and Astronomy Queen Mary University of London London United Kingdom Particle Physics Department Rutherford Appleton Laboratory Didcot United Kingdom Department of Physics Brandeis University Waltham MA United States of America Departamento de Fisica Teorica y del Cosmos and CAFPE Universidad de Granada Granada Spain Institut für Physik Universität Mainz Mainz Germany Department of Physics Boston University

A measurement of the cross section for the production of an isolated photon in association with jets in proton-proton collisions at a center-of-mass energy s=7 TeV is presented. Photons are reconstructed in the pseudorapidity range |ηγ|<1.37 and with a transverse energy eTγ>25 GeV. Jets are reconstructed in the rapidity range |yjet|<4.4 and with a transverse momentum pTjet>20 GeV. The differential cross section dσ/deTγ is measured, as a function of the photon transverse energy, for three different rapidity ranges of the leading-pT jet: |yjet|<1.2, 1.2≤|yjet|<2.8 and 2.8≤|yjet|<4.4. For each rapidity configuration the same-sign (ηγyjet≥0) and opposite-sign (ηγyjet<0) cases are studied separately. The results are based on an integrated luminosity of 37 pb−1, collected with the ATLAS detector at the LHC. Next-to-leading order perturbative QCD calculations are found to be in fair agreement with the data, except for eTγ≲45 GeV, where the theoretical predictions overestimate the measured cross sections.

关键词： CROSS sections (Nuclear physics) PHOTONS JeTS (Nuclear physics) PROTON-proton interactions DeTeCTORS CeNTeR of mass MOMeNTUM (Mechanics)

来源：评论

学校读者我要写书评

暂无评论

Removal notice to “The Software engineering Model's categories of compliance” [CSI 31/1 (2009) 14–18]

引用

computer Standards & Interfaces 2010年第5-6期32卷 326-326页

作者： Sharat Kaushik Institute of Engineering and Technology Computer Science and Engineering 72 Subhash Nagar N E B 301030 Alwar Rajasthan India

来源：评论

学校读者我要写书评

暂无评论

Casimir energy between media-separated cylinders: The scalar case

引用

Physical Review A 2010年第4期82卷 042509-042509页

作者： F. C. Lombardo F. D. Mazzitelli P. I. Villar D. A. R. Dalvit Departamento de Física Juan José Giambiagi FCEyN UBA Facultad de Ciencias Exactas y Naturales Ciudad Universitaria Pabellón I 1428 Buenos Aires Argentina Computer Applications on Science and Engineering Department Barcelona Supercomputing Center (BSC) 29 Jordi Girona E-08034 Barcelona Spain Theoretical Division MS B213 Los Alamos National Laboratory Los Alamos New Mexico 87545 USA

We derive exact expressions for the Casimir scalar interaction energy between media-separated eccentric dielectric cylinders and for the media-separated cylinder-plane geometry using a mode-summation approach. Similarly to the electromagnetic Casimir-Lifshitz interaction energy between fluid-separated planar plates, the force between cylinders is attractive or repulsive depending on the relative values of the permittivities of the three intervening media.

关键词： Separation

来源：评论

学校读者我要写书评

暂无评论

Search for contact interactions in dimuon events from pp collisions at s=7 TeV with the ATLAS detector

引用

Physical Review D 2011年第1期84卷 011101(R)-011101(R)页

作者： G. Aad b. Abbott J. Abdallah A. A. Ab.elalim A. Ab.esselam O. Abdinov b. Abi M. Abolins H. Abramowicz H. Ab.eu e. Acerbi b. S. Acharya D. L. Adams T. N. Addy J. Adelman M. Aderholz S. Adomeit P. Adragna T. Adye S. Aefsky J. A. Aguilar-Saavedra M. Aharrouche S. P. Ahlen F. Ahles A. Ahmad M. Ahsan G. Aielli T. Akdogan T. P. A. Åkesson G. Akimoto A. V. Akimov A. Akiyama M. S. Alam M. A. Alam S. Albrand M. Aleksa I. N. Aleksandrov F. Alessandria C. Alexa G. Alexander G. Alexandre T. Alexopoulos M. Alhroob M. Aliev G. Alimonti J. Alison M. Aliyev P. P. Allport S. e. Allwood-Spiers J. Almond A. Aloisio R. Alon A. Alonso M. G. Alviggi K. Amako P. Amaral C. Amelung V. V. Ammosov A. Amorim G. Amorós N. Amram C. Anastopoulos T. Andeen C. F. Anders K. J. Anderson A. Andreazza V. Andrei M-L. Andrieux X. S. Anduaga A. Angerami F. Anghinolfi N. Anjos A. Annovi A. Antonaki M. Antonelli S. Antonelli A. Antonov J. Antos F. Anulli S. Aoun L. Aperio bella R. Apolle G. Arabidze I. Aracena Y. Arai A. T. H. Arce J. P. Archambault S. Arfaoui J-F. Arguin e. Arik M. Arik A. J. Armbruster O. Arnaez C. Arnault A. Artamonov G. Artoni D. Arutinov S. Asai R. Asfandiyarov S. Ask b. Åsman L. Asquith K. Assamagan A. Astbury A. Astvatsatourov G. Atoian b. Aubert b. Auerbach e. Auge K. Augsten M. Aurousseau N. Austin R. Avramidou D. Axen C. Ay G. Azuelos Y. Azuma M. A. baak G. baccaglioni C. bacci A. M. bach H. bachacou K. bachas G. bachy M. backes M. backhaus e. badescu P. bagnaia S. bahinipati Y. bai D. C. bailey T. bain J. T. baines O. K. baker M. D. baker S. baker F. baltasar Dos Santos Pedrosa e. banas P. banerjee Sw. banerjee D. banfi A. bangert V. bansal H. S. bansil L. barak S. P. baranov A. barashkou A. barbaro Galtieri T. barber e. L. barberio D. barberis M. barbero D. Y. bardin T. barillari M. barisonzi T. barklow N. barlow b. M. barnett R. M. barnett A. baroncelli A. J. barr F. barreiro J. barreiro Guimarães da Costa P. barrillon R. bartoldus A. e. barton D. bartsch V. bartsch R. L. bates L. batkova J. R. batley A. battaglia M. battist Fakultät für Mathematik und Physik Albert-Ludwigs-Universität Freiburg i.Br. Germany Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman Oklahoma USA Institut de Física d’Altes Energies and Universitat Autònoma de Barcelona and ICREA Barcelona Spain Section de Physique Université de Genève Geneva Switzerland Department of Physics Oxford University Oxford United Kingdom Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan Department of Physics Oklahoma State University Stillwater Oklahoma USA Department of Physics and Astronomy Michigan State University East Lansing Michigan USA Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel LAL Université Paris-Sud and CNRS/IN2P3 Orsay France INFN Sezione di Milano Milano Italy Dipartimento di Fisica Università di Milano Milano Italy INFN Gruppo Collegato di Udine Udine Italy ICTP Trieste Italy Physics Department Brookhaven National Laboratory Upton New York USA Department of Physics Hampton University Hampton Virginia USA Department of Physics Yale University New Haven Connecticut USA Max-Planck-Institut für Physik (Werner-Heisenberg-Institut) München Germany Fakultät für Physik Ludwig-Maximilians-Universität München München Germany Department of Physics Queen Mary University of London London United Kingdom Particle Physics Department Rutherford Appleton Laboratory Didcot United Kingdom Department of Physics Brandeis University Waltham Massachusetts USA Departamento de Fisica Teorica y del Cosmos and CAFPE Universidad de Granada Granada Portugal Institut für Physik Universität Mainz Mainz Germany Department of Physics Boston University Boston Massachusetts USA Department of Physics and Astronomy Stony Brook University Stony Brook New York USA Physics Department University of Texas at Dallas Richardson Texas USA INFN Sezione di Roma Tor Vergata Roma Italy Dipartimento di Fisica Università di Roma Tor

A search for contact interactions has b.en performed using dimuon events recorded with the ATLAS detector in proton-proton collisions at s=7 TeV. The data sample corresponds to an integrated luminosity of 42 pb−1. No significant deviation from the standard model is ob.erved in the dimuon mass spectrum, allowing the following 95% C.L. limits to be set on the energy scale of contact interactions: Λ>4.9 TeV (4.5 TeV) for constructive (destructive) interference in the left-left isoscalar compositeness model. These limits are the most stringent to date for μμqq contact interactions.

关键词： PROTON-proton interactions MUONS W bosons MASS (Physics) LAGRANGe equations -- Numerical solutions

来源：评论

学校读者我要写书评

暂无评论

Predicting the yield of various aromatic plants with the help of neural network

Predicting the yield of various aromatic plants with the hel...

引用

2009 International Conference on Artificial Intelligence, ICAI 2009

作者： Mishra, A.K.K. Nishant Chauhan, b. Akash Punhani, C. Department of Computer Science and Engineering MNNIT Allahabad Uttar Pradesh India Department of Chemistry K.R. College Mathura Uttar Pradesh India Department of Computer Science and Engineering F.E.T. R.B.S. College Agra Uttar Pradesh India

ISBN: (纸本)9781601321091

In this paper, a back propagation training algorithm is used to predict the yield of various aromatic plants in saline environment. The yield of a crop depends on many factors like salinity level, crop cutting and type of yield. We have studied all these factors and with the help of preexisting experimental data we prepare a mathematical model for predicting the yield of a crop.

关键词： Crops

来源：评论

学校读者我要写书评

暂无评论

Performance optimization with efficient polling mechanism in Ieee 802.16 networks with cross-layer consideration

引用

Wireless Personal Communications 2009年第3期51卷 635-665页

作者： Yin, Fei Pujolle, Guy Park, Jong Hyuk Chao, Han-Chieh LIP6 University Paris 6 104 Avenue du Président Kennedy Paris 75016 France L2TI Institut Galilée University Paris 13 99 Avenue J-B Clément Villetaneuse 93430 France Department of Computer Science and Engineering Kyungnam University 449 Wolyoung-dong Masan Kyungnam 631-701 Korea Republic of College of Electrical Engineering and Computer Science National Ilan University I-Lan Taiwan

Ieee 802.16 standard suite defines a reservation-based bandwidth allocation mechanism. A SS (Subscriber Station) has to be polled to request bandwidth reservation before transmits uplink data to a bS (base Station). In this mechanism exist two main polling modes: the unicast polling mode and the contention-based polling mode. The different polling operations in MAC (Medium Access Control) result in different PHY (PHYsical layer) frame structure that deeply affect the performance. Therefore, there should be an optimal scheme to adopt these two polling modes in order to optimize the performance. Although the standard defines five service classes to adaptively use the polling modes to fit the QoS (Quality of Service) requirements of different applications, it does not specify exactly a scheme to adopt these two polling modes efficiently and fairly during the polling process. In~this paper, we investigate the polling mechanisms in Ieee 802.16 networks, and focus the attention on the performance caused by different adoption schemes. We also propose a simple but efficient polling mechanism to optimize the performance. The simulation results verify that the performance is conditioned to the fulfillment of the polling mechanisms and our proposed optimal polling scheme can allocate bandwidth more efficient and achieve better performance. © 2009 Springer science+business Media, LLC.

关键词： Medium access control

来源：评论

学校读者我要写书评

暂无评论

Despeckling medical ultrasound images using the contourlet transform

Despeckling medical ultrasound images using the contourlet t...

引用

4th Indian International Conference on Artificial Intelligence, IICAI 2009

作者： Hiremath, P.S. Akkasaligar, Prema T. badiger, Sharan Dept. of P.G. Studies and Research in Computer Science Gulbarga University Gulbarga-585106 Karnataka India Dept of Computer Science and Engineering B.L.D.E.A's Dr P.G.Halakatti Engineering College Bijaptir-586103 Karnataka India Sri. B.M. Patil Medical College BLDE University Bijapur-586103 Karnatak India

ISBN: (纸本)9780972741279

The narrowband ultrasound image suffers from a speckle noise. A novel method of medical ultrasound image despeckling using the contourlet transform is presented. The log transformed ultrasound image is contourlet transformed to obtain contourlet coefficients. The number of levels of Laplacian pyramidal decomposition, the number of directional decompositions to perform on each pyramidal level are determined. The transformed image is denoised by applying thresholding technique on individual bandpass subbands using a bayes' shrinkage rule. The performance is measured in terms of variance, Mean Square error (MSe), Signal to Noise Ratio (SNR), Peak Signal to Noise Ratio (PSNR) and Correlation Coefficient (CC). Finally, a comparison of performance of wavelet-based despeckling and contourlet based despeckling is provided. It is shown that the contourlet transform method has better performance than wavelet transform method. Despeckling is performed on medical ultrasound images to improve visual quality for better image analysis and diagnosis. Copyright © 2009 by IICAI.

关键词： Image enhancement

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：