A search for direct pair production of supersymmetric top squarks (t??1) is presented, assuming the t??1 decays into a top quark and the lightest supersymmetric particle, ????01, and that both top quarks decay to purely hadronic final states. A total of 16 (4) events are observed compared to a predicted standard model background of 13.5+3.7???3.6(4.4+1.7???1.3) events in two signal regions based on ???Ldt=4.7??????fb???1 of pp collision data taken at s???=7??????TeV with the ATLAS detector at the LHC. An exclusion region in the t??1 versus ????01 mass plane is evaluated: 370<mt??1<465??????GeV is excluded for m????01???0??????GeV while mt??1=445??????GeV is excluded for m????01???50??????GeV.
Search for a supersymmetric partner to the top quark in final states with jets and missing transverse momentum at sqrt(s)=7TeV with the ATLAS detector / Aad, G., Aloisio, A., Alviggi, M., Canale, V., Cevenini, F., Chiefari, G., DELLA VOLPE, D., Merola, L., Patricelli, S., Conventi, F., DELLA PIETRA, M., Giordano, R., Musto, E., Rossi, E., SANCHEZ PINEDA, A.R., Carlino, G., de Asmundis, R., Di Donato, C., Doria, A., Iengo, P., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 109:211802(2012), pp. 1-18. [10.1103/PhysRevLett.109.211802]
Search for a supersymmetric partner to the top quark in final states with jets and missing transverse momentum at sqrt(s)=7TeV with the ATLAS detector
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 for direct pair production of supersymmetric top squarks (t??1) is presented, assuming the t??1 decays into a top quark and the lightest supersymmetric particle, ????01, and that both top quarks decay to purely hadronic final states. A total of 16 (4) events are observed compared to a predicted standard model background of 13.5+3.7???3.6(4.4+1.7???1.3) events in two signal regions based on ???Ldt=4.7??????fb???1 of pp collision data taken at s???=7??????TeV with the ATLAS detector at the LHC. An exclusion region in the t??1 versus ????01 mass plane is evaluated: 370I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
