Observation of B[superscript +][subscript c] → J=ψD(*) K(*) decays
A search for the decays B[superscript +][subscript c] →J/ψD(*)[superscritp 0]K+ and B[superscript +][subscript c]→J/ψD(*)[superscript +]K[superscript *0] is performed with data collected at the LHCb experiment corresponding to an integrated luminosity of 3 fb[superscript -1]. The decays B[superscrip...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Article |
| Published: |
American Physical Society (APS)
2019
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| Online Access: | http://hdl.handle.net/1721.1/120304 https://orcid.org/0000-0001-5534-1732 https://orcid.org/0000-0001-8285-3346 |
| Summary: | A search for the decays B[superscript +][subscript c] →J/ψD(*)[superscritp 0]K+ and B[superscript +][subscript c]→J/ψD(*)[superscript +]K[superscript *0] is performed with data collected at the LHCb experiment corresponding to an integrated luminosity of 3 fb[superscript -1]. The decays B[superscript +][subscript c]→J/ψD[superscript 0]K[superscript +] and B[superscript +][subscript c]→J/ψD[superscript ∗0]K][superscript +] are observed for the first time, while first evidence is reported for the B[superscript +][subscript c] →J/ψD[superscript ∗+]K[superscript ∗0] and B[superscript +][subscrip c]→J/ψD[superscript +]K[superscript ∗0] decays. The branching fractions of these decays are determined relative to the B[superscript +][subscript c]→J/ψπ[superscript +] decay. The B[superscript +][subscript c] mass is measured, using the J/ψD[superscript 0]K[superscript +] final state, to be 6274.28 ± 1.40(stat) ± 0.32(syst) MeV/c[superscript 2]. This is the most precise single measurement of the B[superscript +][subscript c] mass to date. |
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