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Evidence for exotic Hadron contributions to Λ_{b}^{0}→J/ψpπ^{-} decays

Abstract:

A full amplitude analysis of Λ_{b}^{0}→J/ψpπ^{-} decays is performed with a data sample acquired with the LHCb detector from 7 and 8 TeV pp collisions, corresponding to an integrated luminosity of 3  fb^{-1}. A significantly better description of the data is achieved when, in addition to the previously observed nucleon excitations N→pπ^{-}, either the P_{c}(4380)^{+} and P_{c}(4450)^{+}→J/ψp states, previously observed in Λ_{b}^{0}→J/ψpK^{-} decays, or the Z_{c}(4200)^{-}→J/ψπ^{-} state, prev...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1103/PhysRevLett.117.082003

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Name:
Swiss National Supercomputing Centre
Publisher:
American Physical Society
Journal:
Physical Review Letters More from this journal
Volume:
117
Issue:
8
Article number:
082003
Publication date:
2016-08-18
Acceptance date:
2016-07-28
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
Pmid:
27588849
Language:
English
Keywords:
Pubs id:
pubs:631513
UUID:
uuid:244c90cf-1a09-4603-8a0e-43ec38605a8e
Local pid:
pubs:631513
Source identifiers:
631513
Deposit date:
2016-11-02

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