• Open Access

Measurement of the B± production asymmetry and the CP asymmetry in B±J/ψK± decays

R. Aaij et al. (LHCb Collaboration)
Phys. Rev. D 95, 052005 – Published 22 March 2017

Abstract

The B± meson production asymmetry in pp collisions is measured using B+D¯0π+ decays. The data were recorded by the LHCb experiment during Run 1 of the LHC at center-of-mass energies of s=7 and 8 TeV. The production asymmetries, integrated over transverse momenta in the range 2<pT<30GeV/c, and rapidities in the range 2.1<y<4.5 are measured to be Aprod(B+,s=7TeV)=(0.41±0.49±0.10)×102, Aprod(B+,s=8TeV)=(0.53±0.31±0.10)×102, where the first uncertainties are statistical and the second are systematic. These production asymmetries are used to correct the raw asymmetries of B+J/ψK+ decays, thus allowing a measurement of the CP asymmetry, ACP(B+J/ψK+)=(0.09±0.27±0.07)×102.

  • Figure
  • Figure
  • Figure
  • Figure
  • Received 20 January 2017

DOI:https://doi.org/10.1103/PhysRevD.95.052005

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.

© 2017 CERN, for the LHCb Collaboration

Physics Subject Headings (PhySH)

Particles & Fields

Authors & Affiliations

Click to Expand

Article Text

Click to Expand

References

Click to Expand
Issue

Vol. 95, Iss. 5 — 1 March 2017

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

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review D

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
×