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Search for new physics in events with opposite-sign leptons, jets, and missing transverse energy in pp collisions at root s=7 TeV

Title:	Search for new physics in events with opposite-sign leptons, jets, and missing transverse energy in pp collisions at root s=7 TeV
Authors:	Chatrchyan, S.; Collaboration, C. M. S.; Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Bergauer, T.; Dragicevic, M.; Eroe, J.; Fabjan, C.; Friedl, M.; Fruehwirth, R.; Ghete, V. M.; Hammer, J.; Hoermann, N.; Hrubec, J.; Jeitler, M.; Kiesenhofer, W.; Knuenz, V.; Krammer, M.; Liko, D.; Mikulec, I.; Pernicka, M.; Rahbaran, B.; Rohringer, C.; Rohringer, H.; Schoefbeck, R.; Strauss, J.; Taurok, A.; Wagner, P.; Waltenberger, W.; Walzel, G.; Widl, E.; Wulz, C.E.; Mossolov, V.; Shumeiko, N.; Gonzalez, J. Suarez; Bansal, S.; Cornelis, T.; De W
Contributors:	Sphicas, P (reprint author), CERN, European Org Nucl Res, CH-1211 Geneva, Switzerland.; Yerevan Phys Inst, Yerevan 375036, Armenia.; OeAW, Inst Hochenergiephys, Vienna, Austria.; Natl Ctr Particle & High Energy Phys, Minsk, Byelarus.; Univ Antwerp, B-2020 Antwerp, Belgium.; Vrije Univ Brussel, Brussels, Belgium.; Univ Libre Brussels, Brussels, Belgium.; Univ Ghent, B-9000 Ghent, Belgium.; Catholic Univ Louvain, B-1348 Louvain, Belgium.; Univ Mons, B-7000 Mons, Belgium.; Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil.; Univ Estado Rio de Janeiro, BR-20550011 Rio De Janeiro, Brazil.; Univ Estadual Paulista, Inst Fis Teor, BR-01405 Sao Paulo, Brazil.; Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, Sofia, Bulgaria.; Univ Sofia, BU-1126 Sofia, Bulgaria.; Inst High Energy Phys, Beijing 100039, Peoples R China.; Peking Univ, State Key Lab Nucl Phys & Tech, Beijing 100871, Peoples R China.; Univ Los Andes, Bogota, Colombia.; Tech Univ Split, Split, Croatia.; Univ Split, Split, Croatia.; Rudjer Boskovic Inst, Zagreb, Croatia.; Univ Cyprus, Nicosia, Cyprus.; Charles Univ Prague, Prague, Czech Republic.; Acad Sci Res & Technol Arab Republ Egypt, Egyptian Network High Energy Phys, Cairo, Egypt.; NICPB, Tallinn, Estonia.; Univ Helsinki, Dept Phys, Helsinki, Finland.; Helsinki Inst Phys, Helsinki, Finland.; Lappeenranta Univ Technol, Lappeenranta, Finland.; CEA Saclay, DSM IRFU, F-91191 Gif Sur Yvette, France.; Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France.; Univ Haute Alsace Mulhouse, Univ Strasbourg, CNRS, Inst Pluridisciplinaire Hubert Curien,IN2P3, Strasbourg, France.; IN2P3, Ctr Calcul, Villeurbanne, France.; Univ Lyon 1, CNRS, IN2P3, Inst Phys Nucl Lyon, F-69622 Villeurbanne, France.; Tbilisi State Univ, Inst High Energy Phys & Informatizat, GE-380086 Tbilisi, Rep of Georgia.; Rhein Westfal TH Aachen, Inst Phys 1, Aachen, Germany.; Rhein Westfal TH Aachen, Phys Inst A 3, Aachen, Germany.; Rhein Westfal TH Aachen, Phys Inst B 3, Aachen, Germany.; DESY, Hamburg, Germany.; Univ Hamburg, Hamburg, Germany.; Univ Karlsruhe, Inst Expt Kernphys, Karlsruhe, Germany.; Inst Nucl Phys Demokritos, Aghia Paraskevi, Greece.; Univ Athens, Athens, Greece.; Univ Ioannina, GR-45110 Ioannina, Greece.; KFKI Res Inst Particle & Nucl Phys, Budapest, Hungary.; Inst Nucl Res ATOMKI, Debrecen, Hungary.; Debrecen Univ Med, H-4012 Debrecen, Hungary.; Panjab Univ, Chandigarh 160014, India.; Univ Delhi, Delhi 110007, India.; Saha Inst Nucl Phys, Kolkata, India.; Bhabha Atom Res Ctr, Mumbai 400085, Maharashtra, India.; Tata Inst Fundamental Res EHEP, Mumbai, Maharashtra, India.; Tata Inst Fundamental Res HECR, Mumbai, Maharashtra, India.; Inst Res Fundamental Sci IPM, Tehran, Iran.; Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy.; Univ Bari, Bari, Italy.; Politecn Bari, Bari, Italy.; Ist Nazl Fis Nucl, Sez Bologna, I-40126 Bologna, Italy.; Univ Bologna, Bologna, Italy.; Ist Nazl Fis Nucl, Sez Catania, I-95129 Catania, Italy.; Univ Catania, Catania, Italy.; Ist Nazl Fis Nucl, Sez Firenze, I-50125 Florence, Italy.; Univ Florence, Florence, Italy.; Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy.; Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy.; Ist Nazl Fis Nucl, Sez Milano Bicocca, I-20133 Milan, Italy.; Univ Milano Bicocca, Milan, Italy.; Ist Nazl Fis Nucl, Sez Napoli, I-80125 Naples, Italy.; Univ Naples Federico II, Naples, Italy.; Ist Nazl Fis Nucl, Sez Padova, Padua, Italy.; Univ Padua, Padua, Italy.; Univ Trento Trento, Padua, Italy.; Ist Nazl Fis Nucl, Sez Pavia, I-27100 Pavia, Italy.; Univ Pavia, I-27100 Pavia, Italy.; Ist Nazl Fis Nucl, Sez Perugia, I-06100 Perugia, Italy.; Univ Perugia, I-06100 Perugia, Italy.; Ist Nazl Fis Nucl, Sez Pisa, Pisa, Italy.; Univ Pisa, Pisa, Italy.; Scuola Normale Super Pisa, Pisa, Italy.; Ist Nazl Fis Nucl, Sez Roma, Rome, Italy.; Univ Roma La Sapienza, Rome, Italy.; Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy.; Univ Turin, Turin, Italy.; Univ Piemonte Orientale Novara, Turin, Italy.; Ist Nazl Fis Nucl, Sez Trieste, Trieste, Italy.; Univ Trieste, Trieste, Italy.; Kangwon Natl Univ, Chunchon, South Korea.; Kyungpook Natl Univ, Taegu, South Korea.; Chonnam Natl Univ, Inst Universe & Elementary Particles, Kwangju, South Korea.; Konkuk Univ, Seoul, South Korea.; Korea Univ, Seoul, South Korea.; Univ Seoul, Seoul, South Korea.; Sungkyunkwan Univ, Suwon, South Korea.; Vilnius State Univ, Vilnius, Lithuania.; IPN, Ctr Invest & Estudios Avanzados, Mexico City 07738, DF, Mexico.; Univ Iberoamer, Mexico City, DF, Mexico.; Benemerita Univ Autonoma Puebla, Puebla, Mexico.; Univ Autonoma San Luis Potosi, San Luis Potosi, Mexico.; Univ Auckland, Auckland 1, New Zealand.; Univ Canterbury, Christchurch 1, New Zealand.; Quaid I Azam Univ, Natl Ctr Phys, Islamabad, Pakistan.
Source:	SCI
Publisher Information:	physics letters b
Publication Year:	2013
Collection:	Peking University Institutional Repository (PKU IR) / 北京大学机构知识库
Subject Terms:	CMS; Physics; Supersymmetry; MOMENTUM
Description:	A search is presented for physics beyond the standard model (BSM) in final states with a pair of opposite-sign isolated leptons accompanied by jets and missing transverse energy. The search uses LHC data recorded at a center-of-mass energy root s = 7 TeV with the CMS detector, corresponding to an integrated luminosity of approximately 5 fb(-1). Two complementary search strategies are employed. The first probes models with a specific dilepton production mechanism that leads to a characteristic kinematic edge in the dilepton mass distribution. The second strategy probes models of dilepton production with heavy, colored objects that decay to final states including invisible particles, leading to very large hadronic activity and missing transverse energy. No evidence for an event yield in excess of the standard model expectations is found. Upper limits on the BSM contributions to the signal regions are deduced from the results, which are used to exclude a region of the parameter space of the constrained minimal supersymmetric extension of the standard model. Additional information related to detector efficiencies and response is provided to allow testing specific models of BSM physics not considered in this Letter. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved. ; Physics, Multidisciplinary ; SCI(E) ; 0 ; ARTICLE ; 3 ; 815-840 ; 718
Document Type:	journal/newspaper
Language:	English
Relation:	842356; http://hdl.handle.net/20.500.11897/227310; WOS:000314259500013
DOI:	10.1016/j.physletb.2012.11.036
Availability:	https://hdl.handle.net/20.500.11897/227310; https://doi.org/10.1016/j.physletb.2012.11.036
Accession Number:	edsbas.C6624737
Database:	BASE