@article{dd3ef4328a7c4ecb8a45c0187cfeb3b4,
title = "Measurement of the Λb0 lifetime and mass in the ATLAS experiment",
abstract = "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 {\=Λ}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 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.",
author = "G. Aad and T. Abajyan and B. Abbott and J. Abdallah and \{Abdel Khalek\}, S. and Abdelalim, \{A. A.\} and O. Abdinov and R. Aben and B. Abi and M. Abolins and Abouzeid, \{O. S.\} and H. Abramowicz and H. Abreu and E. Acerbi and Acharya, \{B. S.\} and L. Adamczyk and Adams, \{D. L.\} and Addy, \{T. N.\} and J. Adelman and S. Adomeit and P. Adragna and T. Adye and S. Aefsky and Aguilar-Saavedra, \{J. A.\} and M. Agustoni and M. Aharrouche and Ahlen, \{S. P.\} and F. Ahles and A. Ahmad and M. Ahsan and G. Aielli and T. Akdogan and {\AA}kesson, \{T. P.A.\} and G. Akimoto and Akimov, \{A. V.\} and Alam, \{M. S.\} and Alam, \{M. A.\} and J. Albert and S. Albrand and M. Aleksa and Aleksandrov, \{I. N.\} and F. Alessandria and G. Alexander and L. Barak and G. Bella and Y. Benhammou and E. Etzion and Y. Oren and Y. Silver and A. Soffer and C. Alexa and M. Bellomo and \{Di Mattia\}, A. and O. Gabizon and S. Istin and E. Kajomovitz and E. Musto and S. Tarem",
note = "Publisher Copyright: {\textcopyright} 2013 CERN",
year = "2013",
month = feb,
day = "4",
doi = "10.1103/PhysRevD.87.032002",
language = "الإنجليزيّة",
volume = "87",
number = "3",
}