Measurement of the Λb0 lifetime and mass in the ATLAS experiment

ATLAS Collaboration

研究成果: Article

33 引用 (Scopus)

抜粋

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.

元の言語English
記事番号032002
ジャーナルPhysical Review D - Particles, Fields, Gravitation and Cosmology
87
発行部数3
DOI
出版物ステータスPublished - 2013 2 4
外部発表Yes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

フィンガープリント Measurement of the Λb0 lifetime and mass in the ATLAS experiment' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

  • これを引用