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Observation of B_{c}^{+}→D^{0}K^{+} decays

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LHCb Collaboration (Including: Back, J. J., Blake, Thomas, Costa Sobral, Cayo, Crocombe, Andrew, Gershon, T. J., Kreps, Michal, Latham, Thomas, Loh, David, Mathad, Abhijit , O'Hanlon, Daniel P., Poluektov, Anton, Qian, W., Wallace, Charlotte and Wicht, Jean). (2017) Observation of B_{c}^{+}→D^{0}K^{+} decays. Physical Review Letters, 118 (11). p. 111803. 111803. doi:10.1103/PhysRevLett.118.111803

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Official URL: http://doi.org/10.1103/PhysRevLett.118.111803

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Abstract

Using proton-proton collision data corresponding to an integrated luminosity of 3.0  fb^{-1}, recorded by the LHCb detector at center-of-mass energies of 7 and 8 TeV, the B_{c}^{+}→D^{0}K^{+} decay is observed with a statistical significance of 5.1 standard deviations. By normalizing to B^{+}→D[over ¯]^{0}π^{+} decays, a measurement of the branching fraction multiplied by the production rates for B_{c}^{+} relative to B^{+} mesons in the LHCb acceptance is obtained, R_{D^{0}K}=(f_{c}/f_{u})×B(B_{c}^{+}→D^{0}K^{+})=(9.3_{-2.5}^{+2.8}±0.6)×10^{-7}, where the first uncertainty is statistical and the second is systematic. This decay is expected to proceed predominantly through weak annihilation and penguin amplitudes, and is the first B_{c}^{+} decay of this nature to be observed.

Item Type: Journal Article
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
SWORD Depositor: Library Publications Router
Journal or Publication Title: Physical Review Letters
Publisher: American Physical Society
ISSN: 0031-9007
Official Date: 17 March 2017
Dates:
DateEvent
17 March 2017Published
15 March 2017Available
Volume: 118
Number: 11
Page Range: p. 111803
Article Number: 111803
DOI: 10.1103/PhysRevLett.118.111803
Status: Peer Reviewed
Publication Status: Published
Reuse Statement (publisher, data, author rights): ** From PubMed via Jisc Publications Router. ** History: ** received: 07-01-2017
Access rights to Published version: Open Access

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