This paper presents a search for a new heavy particle produced in association with a top or antitop quark. Two models in which the new heavy particle is a color singlet or a color triplet are considered, decaying, respectively, to t??????q or tq, leading to a resonance within the tt??????+jets signature. The full 2011 ATLAS pp collision data set from the LHC (4.7fb -1) is used to search for tt?????? events produced in association with jets, in which one of the W bosons from the top quarks decays leptonically and the other decays hadronically. The data are consistent with the Standard Model expectation, and a new particle with mass below 430 Gev for both W ????????? boson and color triplet models is excluded at 95% confidence level, assuming unit right-handed coupling. ?????? 2012 CERN.
Search for resonant top quark plus jet production in tt??????+jets events with the ATLAS detector in pp collisions at ?????????s=7TeV / 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 D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 86:91103(2012), pp. 1-20. [10.1103/PhysRevD.86.091103]
Search for resonant top quark plus jet production in tt??????+jets events with the ATLAS detector in pp collisions at ?????????s=7TeV
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
This paper presents a search for a new heavy particle produced in association with a top or antitop quark. Two models in which the new heavy particle is a color singlet or a color triplet are considered, decaying, respectively, to t??????q or tq, leading to a resonance within the tt??????+jets signature. The full 2011 ATLAS pp collision data set from the LHC (4.7fb -1) is used to search for tt?????? events produced in association with jets, in which one of the W bosons from the top quarks decays leptonically and the other decays hadronically. The data are consistent with the Standard Model expectation, and a new particle with mass below 430 Gev for both W ????????? boson and color triplet models is excluded at 95% confidence level, assuming unit right-handed coupling. ?????? 2012 CERN.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
