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Observation of the Decays Λ0b→χc1pK− and Λ0b→χc2pK−

Abstract:

The first observation of the decays $Λ_{b}^{0}→χ_{c1}pK^{-}$ and $Λ_{b}^{0}→χ_{c2}pK^{-}$ is reported using a data sample corresponding to an integrated luminosity of $3.0  fb^{-1}$, collected by the LHCb experiment in $pp$ collisions at center-of-mass energies of 7 and 8 TeV. The following ratios of branching fractions are measured:

$B(Λ_{b}^{0}→χ_{c1}pK^{-})/B(Λ_{b}^{0}→J/ψpK^{-})=0.242±0.014±0.013±0.009,$ $B(Λ_{b}^{0}→χ_{c2}pK^{-})/B(Λ_{b}^{0}→J/ψpK^{-})=0.248±0.020±0.014±0.009,$ $B...

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Publication status:
Published
Peer review status:
Peer reviewed
Version:
Publisher's version

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Publisher copy:
10.1103/physrevlett.119.062001

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Institution:
University of Oxford
Division:
MPLS Division
Department:
Physics; Particle Physics
Oxford college:
St Annes College
Role:
Author
European Research Council More from this funder
Science and Technology Facilities Council More from this funder
Leverhulme Trust More from this funder
Royal Society More from this funder
Publisher:
American Physical Society Publisher's website
Journal:
Physical Review Letters Journal website
Volume:
119
Issue:
6
Pages:
062001
Publication date:
2017-08-08
Acceptance date:
2017-07-12
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
Pubs id:
pubs:693525
URN:
uri:0d8e1296-dfbf-4e45-a94a-09b6f1cd3786
UUID:
uuid:0d8e1296-dfbf-4e45-a94a-09b6f1cd3786
Local pid:
pubs:693525
Paper number:
6
Language:
English
Keywords:

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