"A measurement of the Lambda(0)(b) lifetime and mass in the decay channel Lambda(0)(b) -> J\/psi (mu(+) mu(-))Lambda(0)(p pi(-)) is presented. The analysis uses a signal sample of about 2200 Lambda(0)(b) and (Lambda) over bar (0)(b) 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 Lambda(0)(b) lifetime and mass. They are measured to be tau(Lambda b) = 1.449 +\/- 0.036(stat) +\/- 0.017(syst) ps and m(Lambda b) = 5619.7 +\/- 0.7(stat) +\/- 1.1(syst) MeV. DOI: 10.1103\/PhysRevD.87.032002"

Aad, G., Abajyan, T., Abbott, B., Abdallah, J., Khalek, S.a., Abdelalim, A.a., et al. (2013). Measurement of the Lambda(0)(b) lifetime and mass in the ATLAS experiment. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 87(3), 1-19 [10.1103/PhysRevD.87.032002].

Measurement of the Lambda(0)(b) lifetime and mass in the ATLAS experiment

CERADINI, Filippo;DI MICCO, Biagio;Di Nardo R;Orestano D;PETRUCCI, FABRIZIO;SALAMANNA, GIUSEPPE;
2013-01-01

Abstract

"A measurement of the Lambda(0)(b) lifetime and mass in the decay channel Lambda(0)(b) -> J\/psi (mu(+) mu(-))Lambda(0)(p pi(-)) is presented. The analysis uses a signal sample of about 2200 Lambda(0)(b) and (Lambda) over bar (0)(b) 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 Lambda(0)(b) lifetime and mass. They are measured to be tau(Lambda b) = 1.449 +\/- 0.036(stat) +\/- 0.017(syst) ps and m(Lambda b) = 5619.7 +\/- 0.7(stat) +\/- 1.1(syst) MeV. DOI: 10.1103\/PhysRevD.87.032002"
2013
Aad, G., Abajyan, T., Abbott, B., Abdallah, J., Khalek, S.a., Abdelalim, A.a., et al. (2013). Measurement of the Lambda(0)(b) lifetime and mass in the ATLAS experiment. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 87(3), 1-19 [10.1103/PhysRevD.87.032002].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11590/131991
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