TY - JOUR
T1 - Measurement of the Λb0 lifetime and mass in the ATLAS experiment
AU - Aad, G.
AU - Abajyan, T.
AU - Abbott, B.
AU - Abdallah, J.
AU - Kabana, S.
AU - ATLAS Collaboration
N1 - Publisher Copyright:
© 2013 CERN
PY - 2013/2/4
Y1 - 2013/2/4
N2 - A measurement of the Λb0 lifetime and mass in the decay channel Λb0→J/ψ(μ+μ-)Λ0(pπ -) is presented. The analysis uses a signal sample of about 2200 Λb0 and Λ̄b0 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 Λb0 lifetime and mass. They are measured to be τΛb=1.449±0.036(stat) ±0.017(syst) ps and mΛb=5619.7±0. 7(stat)±1.1(syst) MeV.
AB - A measurement of the Λb0 lifetime and mass in the decay channel Λb0→J/ψ(μ+μ-)Λ0(pπ -) is presented. The analysis uses a signal sample of about 2200 Λb0 and Λ̄b0 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 Λb0 lifetime and mass. They are measured to be τΛb=1.449±0.036(stat) ±0.017(syst) ps and mΛb=5619.7±0. 7(stat)±1.1(syst) MeV.
UR - https://www.scopus.com/pages/publications/84873686778
U2 - 10.1103/PhysRevD.87.032002
DO - 10.1103/PhysRevD.87.032002
M3 - Article
AN - SCOPUS:84873686778
SN - 1550-7998
VL - 87
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 3
M1 - 032002
ER -