Journal article
Measurement of the phase difference between short- and long-distance amplitudes in the B+→K+μ+μ− decay.
- Abstract:
- A measurement of the phase difference between the short- and long-distance contributions to the B+→K+μ+μ− decay is performed by analysing the dimuon mass distribution. The analysis is based on pp collision data corresponding to an integrated luminosity of 3fb^-1 collected by the LHCb experiment in 2011 and 2012. The long-distance contribution to the B+→K+μ+μ− decay is modelled as a sum of relativistic Breit-Wigner amplitudes representing different vector meson resonances decaying to muon pairs, each with their own magnitude and phase. The measured phases of the J/ψ and ψ(2S) resonances are such that the interference with the short-distance component in dimuon mass regions far from their pole masses is small. In addition, constraints are placed on the Wilson coefficients, C9 and C10, and the branching fraction of the short-distance component is measured.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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- Files:
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(Preview, Version of record, pdf, 1.3MB, Terms of use)
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- Publisher copy:
- 10.1140/epjc/s10052-017-4703-2
Authors
- Publisher:
- Springer
- Journal:
- European Physical Journal. C, Particles and Fields More from this journal
- Volume:
- 77
- Issue:
- 3
- Pages:
- 161
- Publication date:
- 2017-03-01
- Acceptance date:
- 2017-02-16
- DOI:
- EISSN:
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1434-6052
- ISSN:
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1434-6044
- Pmid:
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28408857
- Language:
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English
- Keywords:
- Pubs id:
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pubs:667641
- UUID:
-
uuid:227a6be2-d57f-46b4-9a31-6bc5a5cd1785
- Local pid:
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pubs:667641
- Source identifiers:
-
667641
- Deposit date:
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2017-11-03
Terms of use
- Copyright holder:
- CERN for the benefit of the LHCb collaboration
- Copyright date:
- 2017
- Notes:
- © CERN for the benefit of the LHCb collaboration 2017. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
- Licence:
- CC Attribution (CC BY)
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