Journal article
Measurement of the ratio of branching fractions and difference in CP asymmetries of the decays B+ → J/ψπ+ and B+ → J/ψK+
- Abstract:
- The ratio of branching fractions and the difference in CP asymmetries of the decays B+ → J/ψπ+ and B+ → J/ψK+ are measured using a data sample of pp collisions collected by the LHCb experiment, corresponding to an integrated luminosity of 3 fb^−1 at centre-of-mass energies of 7 and 8 TeV. The results are B(B+→J/ψπ+)/B(B+→J/ψK+)=(3.83±0.03±0.03)×10^−2, ACP(B+→J/ψπ+)−ACP(B+→J/ψK+)=(1.82±0.86±0.14)×10^−2, where the first uncertainties are statistical and the second are systematic. Combining this result with a recent LHCb measurement of A^CP (B+ → J/ψK+) provides the most precise estimate to date of CP violation in the decay B+→J/ψπ+, A^CP(B+→J/ψπ+)=(1.91±0.89±0.16)×10^−2..
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 932.6KB, Terms of use)
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- Publisher copy:
- 10.1007/JHEP03(2017)036
Authors
- Publisher:
- Springer
- Journal:
- Journal of High Energy Physics More from this journal
- Volume:
- 2017
- Issue:
- 3
- Pages:
- 36
- Publication date:
- 2017-03-01
- Acceptance date:
- 2017-02-24
- DOI:
- EISSN:
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1126-6708
- ISSN:
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1029-8479
- Keywords:
- Pubs id:
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pubs:686444
- UUID:
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uuid:081770ff-28db-4092-ad7c-b98950310822
- Local pid:
-
pubs:686444
- Source identifiers:
-
686444
- Deposit date:
-
2017-11-05
Terms of use
- Copyright holder:
- CERN, for the benefit of the LHCb Collaboration
- Copyright date:
- 2017
- Notes:
- Copyright CERN, for the benefit of the LHCb Collaboration. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
- Licence:
- CC Attribution (CC BY)
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