Abstract

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.

Autore Pugliese

• De Filippis Nicola , Iaselli Giuseppe , Maggi Giorgio Pietro , Pugliese Gabriella Maria Incoronata

Tutti gli autori

• Chatrchyan S , Collaboration C , Khachatryan V , Sirunyan AM , Tumasyan A , Adam W , Bergauer T , Dragicevic M , Ero J , Fabjan C , Friedl M , Fruhwirth R , Ghete VM , Hammer J , Hormann N , Hrubec J , Jeitler M , Kiesenhofer W , Knunz V , Krammer M , Liko D , Mikulec I , Pernicka M , Rahbaran B , Rohringer C , Rohringer H , Schofbeck R , Strauss J , Taurok A , Wagner P , Waltenberger W , Walzel G , Widl E , Wulz CE , Mossolov V , Shumeiko N , Gonzalez JS , Bansal S , Cornelis T , De Wolf EA , Janssen X , Luyckx S , Maes T , Mucibello L , Ochesanu S , Roland B , Rougny R , Selvaggi M , Staykova Z , Van Haevermaet H , Van Mechelen P , Van Remortel N , Van Spilbeeck A , Blekman F , Blyweert S , D'Hondt J , Suarez RG , Kalogeropoulos A , Maes M , Olbrechts A , Van Doninck W , Van Mulders P , Van Onsem GP , Villella I , Charaf O , Clerbaux B , De Lentdecker G , Dero V , Gay APR , Hreus T , Leonard A , Marage PE , Reis T , Thomas L , Vander Velde C , Vanlaer P , Wang J , Adler V , Beernaert K , Cimmino A , Costantini S , Garcia G , Grunewald M , Klein B , Lellouch J , Marinov A , Mccartin J , Rios AAO , Ryckbosch D , Strobbe N , Thyssen F , Tytgat M , Vanelderen L , Verwilligen P , Walsh S , Yazgan E , Zaganidis N , Basegmez S , Bruno G , Castello R , Caudron A , Ceard L , Delaere C , du Pree T , Favart D , Forthomme L , Giammanco A , Hollar J , Lemaitre V , Liao J , Militaru O , Nuttens C , Pagano D , Perrini L , Pin A , Piotrzkowski K , Schul N , Garcia JMV , Beliy N , Caebergs T , Daubie E , Hammad GH , Alves GA , Martins MC , Damiao DD , Martins T , Pol ME , Souza MHG , Alda WL , Carvalho W , Custodio A , Da Costa EM , Martins CD , De Souza SF , Figueiredo DM , Mundim L , Nogima H , Oguri V , Da Silva WLP , Santoro A , Jorge LS , Sznajder A , Bernardes CA , Dias FA , Tomei TRFP , Gregores EM , Lagana C , Marinho F , Mercadante PG , Novaes SF , Padula SS , Genchev V , Iaydjiev P , Piperov S , Rodozov M , Stoykova S , Sultanov G , Tcholakov V , Trayanov R , Vutova M , Dimitrov A , Hadjiiska R , Kozhuharov V , Litov L , Pavlov B , Petkov P , Bian JG , Chen GM , Chen HS , Jiang CH , Liang D , Liang S , Meng X , Tao J , Wang J , Wang X , Wang Z , Xiao H , Xu M , Zang J , Zhang Z , Asawatangtrakuldee C , Ban Y , Guo S , Guo Y , Li W , Liu S , Mao Y , Qian SJ , Teng H , Wang S , Zhu B , Zou W , Avila C , Gomez JP , Moreno BG , Oliveros AFO , Sanabria JC , Godinovic N , Lelas D , Plestina R , Polic D , Puljak I , Antunovic Z , Kovac M , Brigljevic V , Duric S , Kadija K , Luetic J , Morovic S , Attikis A , Galanti M , Mavromanolakis G , Mousa J , Nicolaou C , Ptochos F , Razis PA , Finger M , Finger M , Assran Y , Elgamma S , Kamel AE , Khalil S , Mahmoud MA , Radi A , Kadastik M , Muntel M , Raidal M , Rebane L , Tiko A , Azzolini V , Eerola P , Fedi G , Voutilainen M , Harkonen J , Heikkinen A , Karimaki V , Kinnunen R , Kortelainen MJ , Lampen T , Lassila-Perini K , Lehti S , Linden T , Luukka P , Maenpaa T , Peltola T , Tuominen E , Tuominiemi J , Tuovinen E , Ungaro D , Wendland L , Banzuzi K , Korpela A , Tuuva T , Besancon M , Choudhury S , Dejardin M , Denegri D , Fabbro B , Faure JL , Ferri F , Ganjour S , Givernaud A , Gras P , de Monchenault GH , Jarry P , Locci E , Malcles J , Millischer L , Nayak A , Rander J , Rosowsky A , Shreyber I , Titov M , Baffioni S , Beaudette F , Benhabib L , Bianchini L , Bluj M , Broutin C , Busson P , Charlot C , Daci N , Dahms T , Dobrzynski L , de Cassagnac RG , Haguenauer M , Mine P , Mironov C , Ochando C , Paganini P , Sabes D , Salerno R , Sirois Y , Veelken C , Zabi A , Agram JL , Andrea J , Bloch D , Bodin D , Brom JM , Cardaci M , Chabert EC , Collard C , Conte E , Drouhin F , Ferro C , Fontaine JC , Gele D , Goerlach U , Juillot P , Karim M , Le Bihan AC , Van Hove P , Fassi F , Mercier D , Beauceron S , Beaupere N , Bondu O , Boudoul G , Brun H , Chasserat J , Chierici R , Contardo D , Depasse P , El Mamouni H , Fay J , Gascon S , Gouzevitch M , Ille B , Kurca T , Lethuillier M , Mirabito L , Perries S , Sordini V , Tosi S , Tschudi Y , Verdier P , Viret S , Tsamalaidze Z , Anagnostou G , Beranek S , Edelhoff M , Feld L , Heracleous N , Hindrichs O , Jussen R , Klein K , Merz J , Ostapchuk A , Perieanu A , Raupach F , Sammet J , Schael S , Sprenger D , Weber H , Wittmer B , Zhukov V , Ata M , Caudron J , Dietz-Laursonn E , Duchardt D , E

Titolo volume/Rivista

PHYSICS LETTERS. SECTION B

Anno di pubblicazione

2013

ISSN

0370-2693

ISBN

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Numero di citazioni Wos

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