Journal article
First observation of the decay D0 → K−π+μ+μ− in the ρ0–ω region of the dimuon mass spectrum
- Abstract:
- .A study of the decay D0 → K-π+μ+μ-is performed using data collected by the LHCb detector in proton-proton collisions at a centre-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 2.0 fb^-1. Decay candidates with muon pairs that have an invariant mass in the range 675-875 MeV/c2 are considered. This region is dominated by the ρ0 and ω resonances. The branching fraction in this range is measured to B(D0 → K-π+μ+μ-) = (4.17 ± 0.12(stat) ± 0.40(syst))×10^-6. This is the first observation of the decay D0 → K-π+μ+μ-. Its branching fraction is consistent with the value expected in the Standard Model.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 486.5KB, Terms of use)
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- Publisher copy:
- 10.1016/j.physletb.2016.04.029
Authors
- Publisher:
- Elsevier
- Journal:
- Physics Letters B More from this journal
- Volume:
- 757
- Pages:
- 558-567
- Publication date:
- 2016-04-01
- Acceptance date:
- 2016-04-14
- DOI:
- ISSN:
-
0370-2693
- Keywords:
- Pubs id:
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pubs:572430
- UUID:
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uuid:36e6fbfd-c58e-481f-a1f6-53f17bdfc83b
- Local pid:
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pubs:572430
- Source identifiers:
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572430
- Deposit date:
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2016-11-02
Terms of use
- Copyright holder:
- CERN
- Copyright date:
- 2016
- Notes:
- © 2016 CERN for the benefit of the LHCb Collaboration. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
- Licence:
- CC Attribution (CC BY)
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