TY  - JOUR
AU  - ATLAS Collaboration (Aad, G. et al
AU  - Cabrera Urban, S.
AU  - Castillo Gimenez, V.
AU  - Costa, M. J.
AU  - Ferrer, A.
AU  - Fiorini, L.
AU  - Fuster, J.
AU  - Garcia, C.
AU  - Garcia Navarro, J. E.
AU  - Gonzalez de la Hoz, S.
AU  - Hernandez Jimenez, Y.
AU  - Higon-Rodriguez, E.
AU  - Irles Quiles, A.
AU  - Kaci, M.
AU  - Lacasta, C.
AU  - Lacuesta, V. R.
AU  - Marti-Garcia, S.
AU  - Miñano, M.
AU  - Mitsou, V. A.
AU  - Moles-Valls, R.
AU  - Moreno Llacer, M.
AU  - Oliver Garcia, E.
AU  - Perez Garcia-Estañ, M. T.
AU  - Romero Adam, E.
AU  - Ros, E.
AU  - Salt, J.
AU  - Sanchez Martinez, V.
AU  - Solans, C. A.
AU  - Soldevila, U.
AU  - Sanchez, J.
AU  - Torro Pastor, E.
AU  - Valero, A.
AU  - Valladolid Gallego, E.
AU  - Valls Ferrer, J. A.
AU  - Villaplana Perez, M.
AU  - Vos, M.
AU  - Wildauer, A.
PY  - 2013
DA  - 2013//
TI  - Measurement of the Lambda(0)(b) lifetime and mass in the ATLAS experiment
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 032002
EP  - 19pp
VL  - 87
IS  - 3
PB  - Amer Physical Soc
AB  - 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.
SN  - 1550-7998
UR  - http://arxiv.org/abs/arXiv:1207.2284
UR  - https://doi.org/10.1103/PhysRevD.87.032002
DO  - 10.1103/PhysRevD.87.032002
LA  - English
N1  - WOS:000314684500001
ID  - ATLASCollaborationAad_etal2013
ER  -