Search for a Heavy Particle Decaying into an Electron and a Muon with the ATLAS Detector in √s=7 TeV pp collisions at the LHC

被引:44
作者
Aad, G. [1 ]
Abbott, B. [149 ]
Abdallah, J. [17 ,18 ,19 ]
Abdelalim, A. A. [71 ]
Abdesselam, A. [157 ]
Abdinov, O. [16 ]
Abi, B. [150 ]
Abolins, M. [123 ]
Abramowicz, H. [207 ]
Abreu, H. [153 ,154 ]
Acerbi, E. [124 ,125 ]
Acharya, B. S. [220 ,221 ]
Adams, D. L. [38 ]
Addy, T. N. [83 ]
Adelman, J. [237 ]
Aderholz, M. [135 ]
Adomeit, S. [134 ]
Adragna, P. [107 ]
Adye, T. [172 ]
Aefsky, S. [35 ]
Aguilar-Saavedra, J. A. [166 ,167 ]
Aharrouche, M. [115 ]
Ahlen, S. P. [34 ]
Ahles, F. [1 ]
Ahmad, A. [202 ]
Ahsan, M. [62 ]
Aielli, G. [177 ,178 ]
Akdogan, T. [28 ]
Akesson, T. P. A. [113 ]
Akimoto, G. [209 ,210 ]
Akimov, A. V. [130 ]
Akiyama, A. [96 ]
Alam, M. S. [2 ]
Alam, M. A. [108 ]
Albrand, S. [80 ,81 ,82 ]
Aleksa, M. [44 ]
Aleksandrov, I. N. [94 ]
Alessandria, F. [124 ]
Alexa, C. [39 ]
Alexander, G. [207 ]
Alexandre, G. [71 ]
Alexopoulos, T. [15 ]
Alhroob, M. [33 ]
Aliev, M. [24 ]
Alimonti, G. [124 ]
Alison, J. [160 ]
Aliyev, M. [16 ]
Allport, P. P. [104 ]
Allwood-Spiers, S. E. [78 ]
Almond, J. [116 ]
机构
[1] Univ Freiburg, Fak Math & Phys, Freiburg, Germany
[2] SUNY Albany, Albany, NY 12222 USA
[3] Univ Alberta, Dept Phys, Edmonton, AB, Canada
[4] Ankara Univ, Dept Phys, TR-06100 Ankara, Turkey
[5] Dumlupinar Univ, Dept Phys, Kutahya, Turkey
[6] Gazi Univ, Dept Phys, Ankara, Turkey
[7] TOBB Univ Econ & Technol, Div Phys, Ankara, Turkey
[8] Turkish Atom Energy Commiss, Ankara, Turkey
[9] Univ Savoie, Annecy Le Vieux, France
[10] CNRS IN2P3, LAPP, Annecy Le Vieux, France
[11] Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA
[12] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA
[13] Univ Texas Arlington, Dept Phys, Arlington, TX 76019 USA
[14] Univ Athens, Dept Phys, Athens, Greece
[15] Natl Tech Univ Athens, Dept Phys, Zografos, Greece
[16] Azerbaijan Acad Sci, Inst Phys, Baku 370143, Azerbaijan
[17] ICREA, Barcelona, Spain
[18] Univ Autonoma Barcelona, E-08193 Barcelona, Spain
[19] Inst Fis Altes Energies, Barcelona, Spain
[20] Univ Belgrade, Inst Phys, Belgrade, Serbia
[21] Vinca Inst Nucl Sci, Belgrade, Serbia
[22] Univ Bergen, Dept Phys & Technol, Bergen, Norway
[23] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Phys, Berkeley, CA 94720 USA
[24] Humboldt Univ, Dept Phys, Berlin, Germany
[25] Univ Bern, Albert Einstein Ctr Fundamental Phys, Bern, Switzerland
[26] Univ Bern, High Energy Phys Lab, Bern, Switzerland
[27] Univ Birmingham, Sch Phys & Astron, Birmingham, W Midlands, England
[28] Bogazici Univ, Dept Phys, Istanbul, Turkey
[29] Dogus Univ, Div Phys, Istanbul, Turkey
[30] Gaziantep Univ, Dept Engn Phys, Gaziantep, Turkey
[31] INFN Sez Bologna, Bologna, Italy
[32] Univ Bologna, Dipartmento Fis, Bologna, Italy
[33] Univ Bonn, Inst Phys, Bonn, Germany
[34] Boston Univ, Dept Phys, Boston, MA 02215 USA
[35] Brandeis Univ, Dept Phys, Waltham, MA 02254 USA
[36] Univ Fed Rio de Janeiro, COPPE EE IF, Rio De Janeiro, Brazil
[37] Univ Sao Paulo, Inst Fis, BR-01498 Sao Paulo, Brazil
[38] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA
[39] Natl Inst Phys & Nucl Engn, Bucharest, Romania
[40] Univ Politehn Bucuresti, Bucharest, Romania
[41] Univ Buenos Aires, Dept Fis, Buenos Aires, DF, Argentina
[42] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England
[43] Carleton Univ, Dept Phys, Ottawa, ON K1S 5B6, Canada
[44] CERN, Geneva, Switzerland
[45] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA
[46] Pontificia Univ Catolica Chile, Dept Fis, Santiago, Chile
[47] Univ Tecn Federico Santa Maria, Dept Fis, Valparaiso, Chile
[48] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China
[49] Univ Sci & Technol China, Dept Modern Phys, Hefei, Anhui, Peoples R China
[50] Nanjing Univ, Dept Phys, Nanjing, Jiangsu, Peoples R China
基金
巴西圣保罗研究基金会; 加拿大自然科学与工程研究理事会; 美国国家科学基金会;
关键词
D O I
10.1103/PhysRevLett.106.251801
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
This Letter presents the first search for a heavy particle decaying into an e(+/-)mu(-/+) final state in root s = 7 TeV pp collisions at the LHC. The data were recorded by the ATLAS detector during 2010 and correspond to a total integrated luminosity of 35 pb(-1). No excess above the standard model background expectation is observed. Exclusions at 95% confidence level are placed on two representative models. In an R-parity violating supersymmetric model, tau sneutrinos with a mass below 0.75 TeV are excluded, assuming all R-parity violating couplings are zero except lambda(311)' = 0.11 and lambda(312) = 0.07. In a lepton flavor violating model, a Z'-like vector boson with masses of 0.70-1.00 TeV and corresponding cross sections times branching ratios of 0.175-0.183 pb is excluded. These results extend to higher mass R-parity violating sneutrinos and lepton flavor violating Z's than previous constraints from the Tevatron.
引用
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页数:18
相关论文
共 33 条
[1]  
Aad G, 2011, EUR PHYS J C, V71, DOI 10.1140/epjc/s10052-011-1630-5
[2]  
Aad G, 2010, J HIGH ENERGY PHYS, DOI 10.1007/JHEP12(2010)060
[3]   The ATLAS Simulation Infrastructure [J].
Aad, G. ;
Abbott, B. ;
Abdallah, J. ;
Abdelalim, A. A. ;
Abdesselam, A. ;
Abdinov, O. ;
Abi, B. ;
Abolins, M. ;
Abramowicz, H. ;
Abreu, H. ;
Acharya, B. S. ;
Adams, D. L. ;
Addy, T. N. ;
Adelman, J. ;
Adorisio, C. ;
Adragna, P. ;
Adye, T. ;
Aefsky, S. ;
Aguilar-Saavedra, J. A. ;
Aharrouche, M. ;
Ahlen, S. P. ;
Ahles, F. ;
Ahmad, A. ;
Ahmed, H. ;
Ahsan, M. ;
Aielli, G. ;
Akdogan, T. ;
Akesson, T. P. ;
Akimoto, G. ;
Akimov, A. V. ;
Aktas, A. ;
Alam, M. S. ;
Alam, M. A. ;
Albrand, S. ;
Aleksa, M. ;
Aleksandrov, I. N. ;
Alexa, C. ;
Alexander, G. ;
Alexandre, G. ;
Alexopoulos, T. ;
Alhroob, M. ;
Aliev, M. ;
Alimonti, G. ;
Alison, J. ;
Aliyev, M. ;
Allport, P. P. ;
Allwood-Spiers, S. E. ;
Almond, J. ;
Aloisio, A. ;
Alon, R. .
EUROPEAN PHYSICAL JOURNAL C, 2010, 70 (03) :823-874
[4]   The ATLAS Experiment at the CERN Large Hadron Collider [J].
Aad, G. ;
Abat, E. ;
Abdallah, J. ;
Abdelalim, A. A. ;
Abdesselam, A. ;
Abdinov, O. ;
Abi, B. A. ;
Abolins, M. ;
Abramowicz, H. ;
Acerbi, E. ;
Acharya, B. S. ;
Achenbach, R. ;
Ackers, M. ;
Adams, D. L. ;
Adamyan, F. ;
Addy, T. N. ;
Aderholz, M. ;
Adorisio, C. ;
Adragna, P. ;
Aharrouche, M. ;
Ahlen, S. P. ;
Ahles, F. ;
Ahmad, A. ;
Ahmed, H. ;
Aielli, G. ;
Akesson, P. F. ;
Akesson, T. P. A. ;
Alam, S. M. ;
Albert, J. ;
Albrand, S. ;
Aleksa, M. ;
Aleksandrov, I. N. ;
Aleppo, M. ;
Alessandria, F. ;
Alexa, C. ;
Alexander, G. ;
Alexopoulos, T. ;
Alimonti, G. ;
Aliyev, M. ;
Allport, P. P. ;
Allwood-Spiers, S. E. ;
Aloisio, A. ;
Alonso, J. ;
Alves, R. ;
Alviggi, M. G. ;
Amako, K. ;
Amaral, P. ;
Amaral, S. P. ;
Ambrosini, G. ;
Ambrosio, G. .
JOURNAL OF INSTRUMENTATION, 2008, 3 (08)
[5]   Search for R-Parity Violating Decays of Sneutrinos to eμ, μτ, and eτ Pairs in p(p)over-bar Collisions at √s=1.96 TeV [J].
Aaltonen, T. ;
Adelman, J. ;
Alvarez Gonzalez, B. ;
Amerio, S. ;
Amidei, D. ;
Anastassov, A. ;
Annovi, A. ;
Antos, J. ;
Apollinari, G. ;
Appel, J. ;
Apresyan, A. ;
Arisawa, T. ;
Artikov, A. ;
Asaadi, J. ;
Ashmanskas, W. ;
Attal, A. ;
Aurisano, A. ;
Azfar, F. ;
Badgett, W. ;
Barbaro-Galtieri, A. ;
Barnes, V. E. ;
Barnett, B. A. ;
Barria, P. ;
Bartos, P. ;
Bauer, G. ;
Beauchemin, P. -H. ;
Bedeschi, F. ;
Beecher, D. ;
Behari, S. ;
Bellettini, G. ;
Bellinger, J. ;
Benjamin, D. ;
Beretvas, A. ;
Bhatti, A. ;
Binkley, M. ;
Bisello, D. ;
Bizjak, I. ;
Blair, R. E. ;
Blocker, C. ;
Blumenfeld, B. ;
Bocci, A. ;
Bodek, A. ;
Boisvert, V. ;
Bortoletto, D. ;
Boudreau, J. ;
Boveia, A. ;
Brau, B. ;
Bridgeman, A. ;
Brigliadori, L. ;
Bromberg, C. .
PHYSICAL REVIEW LETTERS, 2010, 105 (19)
[6]   Search for scalar neutrino superpartners in e+μ final states in p(p)over-bar collisions at √s=1.96 TeV [J].
Abazov, V. M. ;
Abbott, B. ;
Abolins, M. ;
Acharya, B. S. ;
Adams, M. ;
Adams, T. ;
Aguilo, E. ;
Ahn, S. H. ;
Ahsan, M. ;
Alexeev, G. D. ;
Alkhazov, G. ;
Alton, A. ;
Alverson, G. ;
Alves, G. A. ;
Anastasoaie, M. ;
Ancu, L. S. ;
Andeen, T. ;
Anderson, S. ;
Andrieu, B. ;
Anzelc, M. S. ;
Arnoud, Y. ;
Arov, M. ;
Arthaud, M. ;
Askew, A. ;
Asman, B. ;
Assis Jesus, A. C. S. ;
Atramentov, O. ;
Autermann, C. ;
Avila, C. ;
Ay, C. ;
Badaud, F. ;
Baden, A. ;
Bagby, L. ;
Baldin, B. ;
Bandurin, D. V. ;
Banerjee, S. ;
Banerjee, P. ;
Barberis, E. ;
Barfuss, A. -F. ;
Bargassa, P. ;
Baringer, P. ;
Barreto, J. ;
Bartlett, J. F. ;
Bassler, U. ;
Bauer, D. ;
Beale, S. ;
Bean, A. ;
Begalli, M. ;
Begel, M. ;
Belanger-Champagne, C. .
PHYSICAL REVIEW LETTERS, 2008, 100 (24)
[7]   Search for Sneutrino Production in eμ Final States in 5.3 fb-1 of p(p)over-bar Collisions at √s = 1.96 TeV [J].
Abazov, V. M. ;
Abbott, B. ;
Abolins, M. ;
Acharya, B. S. ;
Adams, M. ;
Adams, T. ;
Alexeev, G. D. ;
Alkhazov, G. ;
Alton, A. ;
Alverson, G. ;
Alves, G. A. ;
Ancu, L. S. ;
Aoki, M. ;
Arnoud, Y. ;
Arov, M. ;
Askew, A. ;
Asman, B. ;
Atramentov, O. ;
Avila, C. ;
BackusMayes, J. ;
Badaud, F. ;
Bagby, L. ;
Baldin, B. ;
Bandurin, D. V. ;
Banerjee, S. ;
Barberis, E. ;
Baringer, P. ;
Barreto, J. ;
Bartlett, J. F. ;
Bassler, U. ;
Beale, S. ;
Bean, A. ;
Begalli, M. ;
Begel, M. ;
Belanger-Champagne, C. ;
Bellantoni, L. ;
Benitez, J. A. ;
Beri, S. B. ;
Bernardi, G. ;
Bernhard, R. ;
Bertram, I. ;
Besancon, M. ;
Beuselinck, R. ;
Bezzubov, V. A. ;
Bhat, P. C. ;
Bhatnagar, V. ;
Blazey, G. ;
Blessing, S. ;
Bloom, K. ;
Boehnlein, A. .
PHYSICAL REVIEW LETTERS, 2010, 105 (19)
[8]   Observation of Bs0→K+K- and measurements of branching fractions of charmless two-body decays of B0 and Bs0 mesons in pp collisions at √s=1.96 TeV [J].
Abulencia, A. ;
Acosta, D. ;
Adelman, J. ;
Affolder, T. ;
Akimoto, T. ;
Albrow, M. G. ;
Ambrose, D. ;
Amerio, S. ;
Amidei, D. ;
Anastassov, A. ;
Anikeev, K. ;
Annovi, A. ;
Antos, J. ;
Aoki, M. ;
Apollinari, G. ;
Arguin, J. -F. ;
Arisawa, T. ;
Artikov, A. ;
Ashmanskas, W. ;
Attal, A. ;
Azfar, F. ;
Azzi-Bacchetta, P. ;
Azzurri, P. ;
Bacchetta, N. ;
Bachacou, H. ;
Badgett, W. ;
Barbaro-Galtieri, A. ;
Barnes, V. E. ;
Barnett, B. A. ;
Baroiant, S. ;
Bartsch, V. ;
Bauer, G. ;
Bedeschi, F. ;
Behari, S. ;
Belforte, S. ;
Bellettini, G. ;
Bellinger, J. ;
Belloni, A. ;
Ben Haim, E. ;
Benjamin, D. ;
Beretvas, A. ;
Beringer, J. ;
Berry, T. ;
Bhatti, A. ;
Binkley, M. ;
Bisello, D. ;
Blair, R. E. ;
Blocker, C. ;
Blumenfeld, B. ;
Bocci, A. .
PHYSICAL REVIEW LETTERS, 2006, 97 (21)
[9]   Search for lepton flavor violating decays of a heavy neutral particle in p(p)over-bar collisions at √s=1.8 TeV -: art. no. 171602 [J].
Acosta, D ;
Affolder, T ;
Akimoto, H ;
Albrow, MG ;
Ambrose, D ;
Amidei, D ;
Anikeev, K ;
Antos, J ;
Apollinari, G ;
Arisawa, T ;
Artikov, A ;
Asakawa, T ;
Ashmanskas, W ;
Azfar, F ;
Azzi-Bacchetta, P ;
Bacchetta, N ;
Bachacou, H ;
Badgett, W ;
Bailey, S ;
de Barbaro, P ;
Barbaro-Galtieri, A ;
Barnes, VE ;
Barnett, BA ;
Baroiant, S ;
Barone, M ;
Bauer, G ;
Bedeschi, F ;
Behari, S ;
Belforte, S ;
Bell, WH ;
Bellettini, G ;
Bellinger, J ;
Benjamin, D ;
Bensinger, J ;
Beretvas, A ;
Berryhill, J ;
Bhatti, A ;
Binkley, M ;
Bisello, D ;
Bishai, M ;
Blair, RE ;
Blocker, C ;
Bloom, K ;
Blumenfeld, B ;
Blusk, SR ;
Bocci, A ;
Bodek, A ;
Bolla, G ;
Bolshov, A ;
Bonushkin, Y .
PHYSICAL REVIEW LETTERS, 2003, 91 (17)
[10]   GEANT4-a simulation toolkit [J].
Agostinelli, S ;
Allison, J ;
Amako, K ;
Apostolakis, J ;
Araujo, H ;
Arce, P ;
Asai, M ;
Axen, D ;
Banerjee, S ;
Barrand, G ;
Behner, F ;
Bellagamba, L ;
Boudreau, J ;
Broglia, L ;
Brunengo, A ;
Burkhardt, H ;
Chauvie, S ;
Chuma, J ;
Chytracek, R ;
Cooperman, G ;
Cosmo, G ;
Degtyarenko, P ;
Dell'Acqua, A ;
Depaola, G ;
Dietrich, D ;
Enami, R ;
Feliciello, A ;
Ferguson, C ;
Fesefeldt, H ;
Folger, G ;
Foppiano, F ;
Forti, A ;
Garelli, S ;
Giani, S ;
Giannitrapani, R ;
Gibin, D ;
Cadenas, JJG ;
González, I ;
Abril, GG ;
Greeniaus, G ;
Greiner, W ;
Grichine, V ;
Grossheim, A ;
Guatelli, S ;
Gumplinger, P ;
Hamatsu, R ;
Hashimoto, K ;
Hasui, H ;
Heikkinen, A ;
Howard, A .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2003, 506 (03) :250-303