• Featured in Physics
  • Editors' Suggestion
  • Open Access

Analysis of Neutral B-Meson Decays into Two Muons

R. Aaij et al. (LHCb Collaboration)
Phys. Rev. Lett. 128, 041801 – Published 25 January 2022
Physics logo See synopsis: Analysis Finds B Meson Behaves Itself

Abstract

Branching fraction and effective lifetime measurements of the rare decay Bs0μ+μ and searches for the decays B0μ+μ and Bs0μ+μγ are reported using proton-proton collision data collected with the LHCb detector at center-of-mass energies of 7, 8, and 13 TeV, corresponding to a luminosity of 9fb1. The branching fraction B(Bs0μ+μ)=(3.090.430.11+0.46+0.15)×109 and the effective lifetime τ(Bs0μ+μ)=2.07±0.29±0.03ps are measured, where the first uncertainty is statistical and the second systematic. No significant signal for B0μ+μ and Bs0μ+μγ decays is found and upper limits B(B0μ+μ)<2.6×1010 and B(Bs0μ+μγ)<2.0×109 at the 95% C.L. are determined, where the latter is limited to the range mμμ>4.9GeV/c2. The results are in agreement with the standard model expectations.

  • Figure
  • Figure
  • Figure
  • Received 24 August 2021
  • Accepted 8 December 2021

DOI:https://doi.org/10.1103/PhysRevLett.128.041801

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

© 2022 CERN, for the LHCb Collaboration

Physics Subject Headings (PhySH)

Particles & Fields

synopsis

Key Image

Analysis Finds B Meson Behaves Itself

Published 25 January 2022

A new analysis of Large Hadron Collider data measures rare decays of the B meson that behave according to the standard model.

See more in Physics

Authors & Affiliations

Click to Expand

See Also

Article Text

Click to Expand

References

Click to Expand
Issue

Vol. 128, Iss. 4 — 28 January 2022

Reuse & Permissions
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Reuse & Permissions

It is not necessary to obtain permission to reuse this article or its components as it is available under the terms of the Creative Commons Attribution 4.0 International license. This license permits unrestricted use, distribution, and reproduction in any medium, provided attribution to the author(s) and the published article's title, journal citation, and DOI are maintained. Please note that some figures may have been included with permission from other third parties. It is your responsibility to obtain the proper permission from the rights holder directly for these figures.

×

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×