Search for resonances in the dilepton mass distribution in pp collisions at root s=7 TeV

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Abstract

A search for narrow resonances at high mass in the dimuon and dielectron channels has been performed by the CMS experiment at the CERN LHC, using pp collision data recorded at root s = 7 TeV. The event samples correspond to integrated luminosities of 40 pb(-1) in the dimuon channel and 35 pb(-1) in the dielectron channel. Heavy dilepton resonances are predicted in theoretical models with extra gauge bosons (Z') or as Kaluza-Klein graviton excitations (G(KK)) in the Randall-Sundrum model. Upper limits on the inclusive cross section of Z'(GKK) -> l + l(-) relative to Z -> l + l(-) are presented. These limits exclude at 95% confidence level a Z' with standard-model-like couplings below 1140 GeV, the superstring-inspired Z'(psi) below 887 GeV, and, for values of the coupling parameter k/(M) over bar (Pl) of 0.05 (0.1), Kaluza-Klein gravitons below 855 (1079) GeV.

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  • Chatrchyan S , Khachatryan V , Sirunyan AM , Tumasyan A , Adam W , Bergauer T , Dragicevic M , Ero J , Fabjan C , Friedl M , Fruhwirth R , Ghete VM , Hammer J , Hansel S , Hoch M , Hormann N , Hrubec J , Jeitler M , Kasieczka G , Kiesenhofer W , Krammer M , Liko D , Mikulec I , Pernicka M , Rohringer H , Schofbeck R , Strauss J , Teischinger F , Wagner P , Waltenberger W , Walzel G , Widl E , Wulz CE , Mossolov V , Shumeiko N , Gonzalez JS , Benucci L , De Wolf EA , Janssen X , Maes T , Mucibello L , Ochesanu S , Roland B , Rougny R , Selvaggi M , Van Haevermaet H , Van Mechelen P , Van Remortel N , Blekman F , Blyweert S , D'Hondt J , Devroede O , Suarez RG , Kalogeropoulos A , Maes J , Maes M , Van Doninck W , Van Mulders P , Van Onsem GP , Villella I , Charaf O , Clerbaux B , De Lentdecker G , Dero V , Gay APR , Hammad GH , Hreus T , Marage PE , Thomas L , Velde CV , Vanlaer P , Adler V , Cimmino A , Costantini S , Grunewald M , Klein B , Lellouch J , Marinov A , Mccartin J , Ryckbosch D , Thyssen F , Tytgat M , Vanelderen L , Verwilligen P , Walsh S , Zaganidis N , Basegmez S , Bruno G , Caudron J , Ceard L , Gil EC , De Jeneret JD , Delaere C , Favart D , Giammanco A , Gregoire G , Hollar J , Lemaitre V , Liao J , Militaru O , Ovyn S , Pagano D , Pin A , Piotrzkowski K , Schul N , Beliy N , Caebergs T , Daubie E , Alves GA , Damiao DD , Pol ME , Souza MHG , Carvalho W , Da Costa EM , Martins CD , De Souza SF , Mundim L , Nogima H , Oguri V , Da Silva WLP , Santoro A , Do Amaral SMS , Sznajder A , De Araujo FTD , Dias FA , Tomei TRFP , Gregores EM , Lagana C , Marinho F , Mercadante PG , Novaes SF , Padula SS , Darmenov N , Dimitrov L , Genchev V , Iaydjiev P , Piperov S , Rodozov M , Stoykova S , Sultanov G , Tcholakov V , Trayanov R , Vankov I , Dimitrov A , Hadjiiska R , Karadzhinova A , Kozhuharov V , Litov L , Mateev M , Pavlov B , Petkov P , Bian JG , Chen GM , Chen HS , Jiang CH , Liang D , Liang S , Meng X , Tao J , Wang J , Wang J , Wang X , Wang Z , Xiao H , Xu M , Zang J , Zhang Z , Ban Y , Guo S , Guo Y , Li W , Mao Y , Qian SJ , Teng H , Zhang L , Zhu B , Zou W , Cabrera A , Moreno BG , Rios AAO , Oliveros AFO , Sanabria JC , Godinovic N , Lelas D , Lelas K , Plestina R , Polic D , Puljak I , Antunovic Z , Dzelalija M , Brigljevic V , Duric S , Kadija K , Morovic S , Attikis A , Galanti M , Mousa J , Nicolaou C , Ptochos F , Razis PA , Finger M , Finger M , Assran Y , Khalil S , Mahmoud MA , Hektor A , Kadastik M , Muntel M , Raidal M , Rebane L , Azzolini V , Eerola P , Fedi G , Czellar S , Harkonen J , Heikkinen A , Karimaki V , Kinnunen R , Kortelainen MJ , Lampen T , Lassila-Perini K , Lehti S , Linden T , Luukka P , Maenpaa T , Tuominen E , Tuominiemi J , Tuovinen E , Ungaro D , Wendland L , Banzuzi K , Korpela A , Tuuva T , Sillou D , Besancon M , Choudhury S , Dejardin M , Denegri D , Fabbro B , Faure JL , Ferri F , Ganjour S , Gentit FX , Givernaud A , Gras P , de Monchenault GH , Jarry P , Locci E , Malcles J , Marionneau M , Millischer L , Rander J , Rosowsky A , Shreyber I , Titov M , Verrecchia P , Baffioni S , Beaudette F , Benhabib L , Bianchini L , Bluj M , Broutin C , Busson P , Charlot C , Dahms T , Dobrzynski L , Elgammal S , de Cassagnac RG , Haguenauer M , Mine P , Mironov C , Ochando C , Paganini P , Sabes D , Salerno R , Sirois Y , Thiebaux C , Wyslouch B , 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 , Greder S , Juillot P , Karim M , Le Bihan AC , Mikami Y , Van Hove P , Fassi F , Mercier D , Baty C , Beauceron S , Beaupere N , Bedjidian M , Bondu O , Boudoul G , Boumediene D , Brun H , Chierici R , Contardo D , Depasse P , El Mamouni H , Fay J , Gascon S , Ille B , Kurca T , Le Grand T , Lethuillier M , Mirabito L , Perries S , Sordini V , Tosi S , Tschudi Y , Verdier P , Lomidze D , Anagnostou G , Edelhoff M , Feld L , Heracleous N , Hindrichs O , Jussen R , Klein K , Merz J , Mohr N , Ostapchuk A , Perieanu A , Raupach F , Sammet J , Schael S , Sprenger D , Weber H , Weber M , Wittmer B , Ata M , Bender W , Dietz-Laursonn E , Erdmann M , Frangenheim J , Hebbeker T , Hinzmann A , Hoepfner K , Klimkovich T , Klingebiel D , Kreuzer P , Lanske D , Magass C , Merschmeyer M , Meyer A , Papacz P , Pieta H , Reithler H , Schmitz

Titolo volume/Rivista

JOURNAL OF HIGH ENERGY PHYSICS

Anno di pubblicazione

2011

ISSN

1126-6708

ISBN

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Numero di citazioni Wos

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Settori ERC

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Codici ASJC

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