A measurement of the ??????b0 lifetime and mass in the decay channel ??????b0?????????J/??????(??????+??????-)??????0(p?????? -) is presented. The analysis uses a signal sample of about 2200 ??????b0 and ????????????b0 decays that are reconstructed in 4.9 fb -1 of ATLAS pp collision data collected in 2011 at the LHC center-of-mass energy of 7 TeV. A simultaneous mass and decay time maximum likelihood fit is used to extract the ??????b0 lifetime and mass. They are measured to be ????????????b=1.449??????0.036(stat) ??????0.017(syst) ps and m??????b=5619.7??????0. 7(stat)??????1.1(syst) MeV. ?????? 2013 CERN.
Measurement of the ??????b0 lifetime and mass in the ATLAS experiment / 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. - 87:32002(2013), pp. 1-19. [10.1103/PhysRevD.87.032002]
Measurement of the ??????b0 lifetime and mass in the ATLAS experiment
ALOISIO, ALBERTO;ALVIGGI, MARIAGRAZIA;CANALE, VINCENZO;CEVENINI, FRANCESCO;CHIEFARI, GIOVANNI;DELLA VOLPE, DOMENICO;MEROLA, LEONARDO;PATRICELLI, SERGIO;DELLA PIETRA, MASSIMO;GIORDANO, RAFFAELE;Rossi, Elvira;SANCHEZ PINEDA, ARTURO RODOLFO;
2013
Abstract
A measurement of the ??????b0 lifetime and mass in the decay channel ??????b0?????????J/??????(??????+??????-)??????0(p?????? -) is presented. The analysis uses a signal sample of about 2200 ??????b0 and ????????????b0 decays that are reconstructed in 4.9 fb -1 of ATLAS pp collision data collected in 2011 at the LHC center-of-mass energy of 7 TeV. A simultaneous mass and decay time maximum likelihood fit is used to extract the ??????b0 lifetime and mass. They are measured to be ????????????b=1.449??????0.036(stat) ??????0.017(syst) ps and m??????b=5619.7??????0. 7(stat)??????1.1(syst) MeV. ?????? 2013 CERN.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
