A search is presented for a narrow resonance decaying to a pair of Z bosons using data corresponding to 1.02 fb???1 of integrated luminosity collected by the ATLAS experiment from pp collisions at ??? s = 7 TeV. Events containing either four charged leptons () or two charged leptons and two jets ( j j) are analyzed and found to be consistent with the Standard Model background expectation. Lower limits on a resonance mass are set using the Randall???Sundrum (RS1) graviton model as a benchmark. Using both and j j events, an RS1 graviton with k/¯mpl = 0.1 and mass between 325 and 845 GeV is excluded at 95% confidence level. In addition, the events are used to set a model-independent fiducial cross section limit of ??fid(pp??? X ???ZZ) < 0.92 pb at 95% confidence level for any new sources of ZZ production with mZZ greater than 300 GeV.
Search for new particles decaying to ZZ using final states with leptons and jets with the ATLAS detector in ???s=7 TeV proton-proton collisions / Aad, G.; Aloisio, Alberto; Alviggi, Mariagrazia; Canale, Vincenzo; Cevenini, Francesco; Chiefari, Giovanni; DELLA VOLPE, Domenico; Merola, Leonardo; Patricelli, Sergio; Conventi, Francesco; DELLA PIETRA, Massimo; Giordano, Raffaele; Musto, Elisa; Rossi, Elvira; SANCHEZ PINEDA, ARTURO RODOLFO; Carlino, Gianpaolo; de Asmundis, Riccardo; Di Donato, Camilla; Doria, Alessandra; Iengo, Paolo; Izzo, Vincenzo; Sekhniaidze, Givi; Al, e. t. .. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 712:(2012), pp. 331-350. [10.1016/j.physletb.2012.05.020]
Search for new particles decaying to ZZ using final states with leptons and jets with the ATLAS detector in ???s=7 TeV proton-proton collisions
ALOISIO, ALBERTO;ALVIGGI, MARIAGRAZIA;CANALE, VINCENZO;CHIEFARI, GIOVANNI;DELLA VOLPE, DOMENICO;MEROLA, LEONARDO;PATRICELLI, SERGIO;DELLA PIETRA, MASSIMO;GIORDANO, RAFFAELE;Rossi, Elvira;SANCHEZ PINEDA, ARTURO RODOLFO;
2012
Abstract
A search is presented for a narrow resonance decaying to a pair of Z bosons using data corresponding to 1.02 fb???1 of integrated luminosity collected by the ATLAS experiment from pp collisions at ??? s = 7 TeV. Events containing either four charged leptons () or two charged leptons and two jets ( j j) are analyzed and found to be consistent with the Standard Model background expectation. Lower limits on a resonance mass are set using the Randall???Sundrum (RS1) graviton model as a benchmark. Using both and j j events, an RS1 graviton with k/¯mpl = 0.1 and mass between 325 and 845 GeV is excluded at 95% confidence level. In addition, the events are used to set a model-independent fiducial cross section limit of ??fid(pp??? X ???ZZ) < 0.92 pb at 95% confidence level for any new sources of ZZ production with mZZ greater than 300 GeV.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
