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Measurement of the ?b0 lifetime and mass in the ATLAS experiment

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posted on 2023-06-08, 15:31 authored by V Bartsch, Alessandro CerriAlessandro Cerri, Antonella De SantoAntonella De Santo, S Martin-Haugh, C J Potter, A Rose, Fabrizio SalvatoreFabrizio Salvatore, Mark SuttonMark Sutton, Iacopo Vivarelli, and the ATLAS Collaboration
A measurement of the ?0b lifetime and mass in the decay channel ?0b ? J/?(µ+µ-)?0(pp-) is presented. The analysis uses a signal sample of about 2200 ?0b and ? ¯0b 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 ?0b lifetime and mass. They are measured to be t?b = 1.449 ± 0.036(stat) ± 0.017(syst) ps and m?b = 5619.7 ± 0.7(stat) ± 1.1(syst) MeV.

History

Publication status

  • Published

File Version

  • Published version

Journal

Physical Review D

ISSN

1550-7998

Publisher

American Physical Society

Issue

3

Volume

87

Page range

032002-032021

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2013-08-19

First Open Access (FOA) Date

2013-08-19

First Compliant Deposit (FCD) Date

2013-08-19

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