Journal article
Measurements of the S-wave fraction in B0 → K+π−μ+μ− decays and the B0 → K∗(892)0μ+μ− differential branching fraction
- Abstract:
- A measurement of the differential branching fraction of the decay B0 → K∗(892)0μ+μ− is presented together with a determination of the S-wave fraction of the K+π− system in the decay B0 → K+π−μ+μ−. The analysis is based on pp-collision data corresponding to an integrated luminosity of 3 fb−1 collected with the LHCb experiment. The measurements are made in bins of the invariant mass squared of the dimuon system, q2. Precise theoretical predictions for the differential branching fraction of B0 → K∗(892)0μ+μ− decays are available for the q2 region 1.1 < q2< 6.0 GeV2/c4. In this q2 region, for the K+π− invariant mass range 796 < mKπ < 996 MeV/c2, the S-wave fraction of the K+π− system in B0 → K+π−μ+μ− decays is found to be FS = 0.101±0.017(stat)±0.009(syst), and the differential branching fraction of B0 → K∗(892)0μ+μ− decays is determined to be dℬ/dq2=(0.392−0.019+0.020(stat)±0.010(syst)±0.027(norm))×10−7c4/GeV2. The differential branching fraction measurements presented are the most precise to date and are found to be in agreement with Standard Model predictions.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 1.2MB, Terms of use)
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- Publisher copy:
- 10.1007/JHEP11(2016)047
Authors
- Publisher:
- Springer
- Journal:
- Journal of High Energy Physics More from this journal
- Volume:
- 2016
- Issue:
- 11
- Pages:
- 47
- Publication date:
- 2016-11-01
- Acceptance date:
- 2016-10-28
- DOI:
- ISSN:
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1126-6708 and 1029-8479
- Keywords:
- Pubs id:
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pubs:661070
- UUID:
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uuid:09684877-397b-478b-8e10-8e8969fd5099
- Local pid:
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pubs:661070
- Source identifiers:
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661070
- Deposit date:
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2016-11-24
Terms of use
- Copyright holder:
- CERN
- Copyright date:
- 2016
- 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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