Article
Search for nonpointing and delayed photons in the diphoton and missing transverse momentum final state in 8 TeV pp collisions at the LHC using the ATLAS detector
Physical Review D, American Physical Society (APS), ISSN 1089-4918
Volume 90, 11, 2014
DOI:10.1103/physrevd.90.112005, Dimensions: pub.1023372687,
Authors
Affiliations
Organisations
- (1) Center for Particle Physics of Marseilles, grid.470046.1
- (2) University of Oklahoma, grid.266900.b
- (3) Institute of Physics, Academia Sinica, grid.482252.b
- (4) Laboratoire de l'Accélérateur Linéaire, grid.462450.1
- (5) Institute of Physics, grid.435347.2
- (6) National Institute for Subatomic Physics, grid.420012.5
- (7) Oklahoma State University, grid.65519.3e
- (8) Michigan State University, grid.17088.36
- (9) University of Toronto, grid.17063.33
- (10) Tel Aviv University, grid.12136.37
- (11) Technion – Israel Institute of Technology, grid.6451.6
- (12) European Organization for Nuclear Research, grid.9132.9
- (13) Stockholm University, grid.10548.38
- (14) International Centre for Theoretical Physics, grid.419330.c
- (15) INFN Sezione di Trieste, grid.470223.0
- (16) AGH University of Science and Technology, grid.9922.0
- (17) Brookhaven National Laboratory, grid.202665.5
- (18) Yale University, grid.47100.32
- (19) Ludwig Maximilian University of Munich, grid.5252.0
- (20) Rutherford Appleton Laboratory, grid.76978.37
- (21) University of Belgrade, grid.7149.b
- (22) University of Granada, grid.4489.1
- (23) Laboratory of Instrumentation and Experimental Particles Physics, grid.420929.4
- (24) University of Bern, grid.5734.5
- (25) Boston University, grid.189504.1
- (26) Joint Institute for Nuclear Research, grid.33762.33
- (27) INFN Sezione di Roma II, grid.470219.9
- (28) University of Rome Tor Vergata, grid.6530.0
- (29) Lund University, grid.4514.4
- (30) University of Tokyo, grid.26999.3d
- (31) Russian Academy of Sciences, grid.4886.2
- (32) INFN Sezione di Bologna, grid.470193.8
- (33) University of Bologna, grid.6292.f
- (34) University of Victoria, grid.143640.4
- (35) Laboratory of Subatomic Physics and Cosmology, grid.472561.3
- (36) Instituto de Física La Plata, grid.450288.3
- (37) Horia Hulubei National Institute for R and D in Physics and Nuclear Engineering, grid.443874.8
- (38) University of Geneva, grid.8591.5
- (39) National Technical University of Athens, grid.4241.3
- (40) INFN Sezione di Milano, grid.470206.7
- (41) University of Chicago, grid.170205.1
- (42) University of Birmingham, grid.6572.6
- (43) Lancaster University, grid.9835.7
- (44) University of Liverpool, grid.10025.36
- (45) INFN Sezione di Napoli, grid.470211.1
- (46) University of Naples Federico II, grid.4691.a
- (47) University of Copenhagen, grid.5254.6, KU
- (48) Queen Mary University of London, grid.4868.2
- (49) Columbia University, grid.21729.3f
- (50) High Energy Accelerator Research Organization, grid.410794.f
- (51) Federal University of Rio de Janeiro, grid.8536.8
- (52) Brandeis University, grid.253264.4
- (53) University of Michigan, grid.214458.e
- (54) University of Coimbra, grid.8051.c
- (55) University of Lisbon, grid.9983.b
- (56) University of Freiburg, grid.5963.9
- (57) University of Sheffield, grid.11835.3e
- (58) Heidelberg University, grid.7700.0
- (59) University of Milan, grid.4708.b
- (60) National and Kapodistrian University of Athens, grid.5216.0
- (61) TU Dresden, grid.4488.0
- (62) Budker Institute of Nuclear Physics, grid.418495.5
- (63) Autonomous University of Barcelona, grid.7080.f
- (64) National Laboratory of Frascati, grid.463190.9
- (65) Moscow Engineering Physics Institute, grid.183446.c
- (66) Institute of Experimental Physics, grid.435184.f
- (67) INFN Sezione di Roma I, grid.470218.8
- (68) University of Oxford, grid.4991.5
- (69) SLAC National Accelerator Laboratory, grid.445003.6
- (70) Duke University, grid.26009.3d
- (71) University of Montreal, grid.14848.31
- (72) DESY, grid.7683.a
- (73) Boğaziçi University, grid.11220.30
- (74) Autonomous University of Madrid, grid.5515.4
- (75) University of Cambridge, grid.5335.0
- (76) University of Bonn, grid.10388.32
- (77) Institute for Theoretical and Experimental Physics, grid.21626.31
- (78) Argonne National Laboratory, grid.187073.a
- (79) Comenius University, grid.7634.6
- (80) University of Illinois at Urbana Champaign, grid.35403.31
- (81) University of Siegen, grid.5836.8
- (82) Czech Technical University in Prague, grid.6652.7
- (83) University of Johannesburg, grid.412988.e
- (84) Lawrence Berkeley National Laboratory, grid.184769.5
- (85) INFN Sezione di Roma III, grid.470220.3
- (86) Roma Tre University, grid.8509.4
- (87) Institut de Recherche sur les Lois Fondamentales de l'Univers, grid.457342.3
- (88) Aristotle University of Thessaloniki, grid.4793.9
- (89) Sapienza University of Rome, grid.7841.a
- (90) Institute of High Energy Physics, grid.418741.f
- (91) Charles University, grid.4491.8
- (92) Institute of Nuclear Physics Polish Academy of Sciences, grid.418860.3
- (93) University of Wisconsin System, grid.28803.31
- (94) University of Wuppertal, grid.7787.f
- (95) Weizmann Institute of Science, grid.13992.30
- (96) University of Melbourne, grid.1008.9
- (97) INFN Sezione di Genova, grid.470205.4
- (98) University of Genoa, grid.5606.5
- (99) Max Planck Institute for Physics, grid.435824.c
- (100) University of Manchester, grid.5379.8
- (101) Laboratoire d'Annecy-le-Vieux de physique des particules, grid.450330.1
- (102) Harvard University, grid.38142.3c
- (103) University of Sussex, grid.12082.39
- (104) University of Glasgow, grid.8756.c
- (105) University of California, Santa Cruz, grid.205975.c
- (106) Laboratoire Physique nucléaire et Hautes Energies, grid.463935.e
- (107) Tufts University, grid.429997.8
- (108) INFN Sezione di Pisa, grid.470216.6
- (109) University of Pisa, grid.5395.a
- (110) University of Warwick, grid.7372.1
- (111) Gaziantep University, grid.411549.c
- (112) Stony Brook University, grid.36425.36
- (113) McGill University, grid.14709.3b
- (114) Carleton University, grid.34428.39
- (115) University of Massachusetts Amherst, grid.266683.f
- (116) University of Hassan II Casablanca, grid.412148.a
- (117) York University, grid.21100.32
- (118) Uppsala University, grid.8993.b
- (119) University College London, grid.83440.3b
- (120) Louisiana Tech University, grid.259237.8
- (121) Royal Holloway University of London, grid.4970.a
- (122) Johannes Gutenberg University of Mainz, grid.5802.f
- (123) Radboud University Nijmegen, grid.5590.9
- (124) University of Edinburgh, grid.4305.2
- (125) University of Pittsburgh, grid.21925.3d
- (126) University of Göttingen, grid.7450.6
- (127) University of Sydney, grid.1013.3
- (128) University of Washington, grid.34477.33
- (129) BI Stepanov Institute of Physics, grid.426545.4
- (130) Institute of Physics, grid.424881.3
- (131) Lomonosov Moscow State University, grid.14476.30
- (132) Institute for High Energy Physics, grid.424823.b
- (133) Chinese University of Hong Kong, grid.10784.3a
- (134) University at Albany, State University of New York, grid.265850.c
- (135) Laboratoire de Physique Corpusculaire, grid.470921.9
- (136) Mohamed I University, grid.410890.4
- (137) The University of Texas at Arlington, grid.267315.4
- (138) Tokyo Metropolitan University, grid.265074.2
- (139) University of Oregon, grid.170202.6
- (140) University of Udine, grid.5390.f
- (141) University of Pennsylvania, grid.25879.31
- (142) University of the Witwatersrand, grid.11951.3d
- (143) Federico Santa María Technical University, grid.12148.3e
- (144) Indiana University Bloomington, grid.411377.7
- (145) University of Bergen, grid.7914.b
- (146) Simon Fraser University, grid.61971.38
- (147) University of Oslo, grid.5510.1
- (148) Northern Illinois University, grid.261128.e
- (149) TU Dortmund University, grid.5675.1
- (150) University of Alberta, grid.17089.37
- (151) Institute for Corpuscular Physics, grid.470047.0
- (152) Ankara University, grid.7256.6
- (153) TRIUMF, grid.232474.4
- (154) Southern Methodist University, grid.263864.d
- (155) University of Calabria, grid.7778.f
- (156) Pontifical Catholic University of Chile, grid.7870.8
- (157) Universidade Federal de Juiz de Fora, grid.411198.4
- (158) Doğuş University, grid.19680.36
- (159) Iowa State University, grid.34421.30
- (160) Shandong University, grid.27255.37
- (161) Nanjing University, grid.41156.37
- (162) Tsinghua University, grid.12527.33
- (163) Kobe University, grid.31432.37
- (164) Mohammed V University, grid.31143.34
- (165) University of Arizona, grid.134563.6
- (166) INFN Sezione di Lecce, grid.470680.d
- (167) Palacký University, Olomouc, grid.10979.36
- (168) University of Ljubljana, grid.8954.0
- (169) INFN Sezione di Pavia, grid.470213.3
- (170) University of Pavia, grid.8982.b
- (171) University of California, Irvine, grid.266093.8
- (172) New York University, grid.137628.9
- (173) Humboldt University of Berlin, grid.7468.d
- (174) Tbilisi State University, grid.26193.3f
- (175) Federal University of São João del-Rei, grid.428481.3
- (176) University of Sao Paulo, grid.11899.38
- (177) University of Giessen, grid.8664.c
- (178) Cadi Ayyad University, grid.411840.8
- (179) Osaka University, grid.136593.b
- (180) Petersburg Nuclear Physics Institute, grid.430219.d
- (181) University of British Columbia, grid.17091.3e
- (182) University of Innsbruck, grid.5771.4
- (183) The Ohio State University, grid.261331.4
- (184) University of Science and Technology of China, grid.59053.3a
- (185) National Centre for Nuclear Energy, Science and Technology, grid.450269.c
- (186) University of New Mexico, grid.266832.b
- (187) University of Salento, grid.9906.6
- (188) Alikhanyan National Laboratory, grid.48507.3e
- (189) University of Cape Town, grid.7836.a
- (190) University of Tsukuba, grid.20515.33
- (191) Nagoya University, grid.27476.30
- (192) Shinshu University, grid.263518.b
- (193) Tokyo Institute of Technology, grid.32197.3e
- (194) Waseda University, grid.5290.e
- (195) Kyoto University, grid.258799.8
- (196) The University of Texas at Dallas, grid.267323.1
- (197) University of Adelaide, grid.1010.0
- (198) Royal Institute of Technology, grid.5037.1
- (199) Kyushu University, grid.177174.3
- (200) Istanbul Aydın University, grid.449300.a
- (201) Shanghai Jiao Tong University, grid.16821.3c
- (202) Universidad Antonio Nariño, grid.440783.c
- (203) University of Iowa, grid.214572.7
- (204) Hampton University, grid.256774.5
- (205) Hiroshima Institute of Technology, grid.417545.6
- (206) Okayama University, grid.261356.5
- (207) University of Minho, grid.10328.38
- (208) University of Buenos Aires, grid.7345.5
- (209) Jagiellonian University, grid.5522.0
- (210) National Institute for Research and Development of Isotopic and Molecular Technologies, grid.435410.7
- (211) Institut National de Physique Nucléaire et de Physique des Particules, grid.433124.3
- (212) University of Würzburg, grid.8379.5
- (213) Nagasaki Institute of Applied Science, grid.444367.6
- (214) TOBB University of Economics and Technology, grid.412749.d
- (215) Kyoto University of Education, grid.411219.e
- (216) Ritsumeikan University, grid.262576.2
- (217) Massachusetts Institute of Technology, grid.116068.8
- (218) Belarusian State University, grid.17678.3f
- (219) Gazi University, grid.25769.3f
Countries
Continents
Description
A search has been performed, using the full 20.3 fb-1 data sample of 8 TeV proton-proton collisions collected in 2012 with the ATLAS detector at the LHC, for photons originating from a displaced vertex due to the decay of a neutral long-lived particle into a photon and an invisible particle. The analysis investigates the diphoton plus missing transverse momentum final state, and is therefore most sensitive to pair production of long-lived particles. The analysis technique exploits the capabilities of the ATLAS electromagnetic calorimeter to make precise measurements of the flight direction, as well as the time of flight, of photons. No excess is observed over the Standard Model predictions for background. Exclusion limits are set within the context of gauge mediated supersymmetry breaking models, with the lightest neutralino being the next-to-lightest supersymmetric particle and decaying into a photon and gravitino with a lifetime in the range from 250 ps to about 100 ns.
Funders
- Ministry of Science and Technology of the People's Republic of China
- Chinese Academy of Sciences
- Japan Society for the Promotion of Science
- Slovenian Research Agency
- Science and Technology Facilities Council
- Colciencias
- German Research Foundation
- Leverhulme Trust
- Agencia Nacional de Promoción Científica y Tecnológica
- French National Centre for Scientific Research
- European Research Council
- São Paulo Research Foundation
- Ministry of Economy, Industry and Competitiveness
- Federal Ministry of Education and Research
- Brain Research Foundation
- Human Growth Foundation
- Brookhaven National Laboratory
- Rosatom (Russia)
- European Commission
- Foundation For Fundamental Research On Matter
- Dutch Research Council
- Israeli Centers for Research Excellence
- FWF Austrian Science Fund
- Ministry of Education, Science and Sport
- Israel Science Foundation
- Ministry of Education, Culture, Sports, Science and Technology
- National Natural Science Foundation of China
- Ministry of Education Youth and Sports
- National Institute for Nuclear Physics
- Joint Institute for Nuclear Research
- Semiconductor Research Corporation
- Ministry of Science and Higher Education
- Comisión Nacional de Investigación Científica y Tecnológica
- Atomic Energy and Alternative Energies Commission
- National Science Center
- Natural Sciences and Engineering Research Council
- Foundation for Science and Technology
- Alexander von Humboldt Foundation
- Swiss National Science Foundation
- Turkish Atomic Energy Authority
- General Secretariat for Research and Technology
- Ministry of Science and Technology
- Federal Ministry of Science, Research and Economics
- United States Department of Energy
- Royal Society
- National Council for Scientific and Technological Development
- Canada Foundation for Innovation
- Canadian Armed Forces
- Danish National Research Foundation
Links & Metrics
NORA University Profiles
Dimensions Citation Indicators
Times Cited: 35
Field Citation Ratio (FCR): 13.04