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Title: First Observation of the Doubly Cabibbo-Suppressed Decay of a Charmed Baryon: Λ c + p K + π -

Journal Article · · Physical Review Letters
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We report the first observation of the decay Λ c + p K + π - using a 980 fb - 1 data sample collected by the Belle detector at the KEKB asymmetric-energy e + e - collider. This is the first observation of a doubly Cabibbo-suppressed decay of a charmed baryon. We measure the branching ratio of this decay with respect to its Cabibbo-favored counterpart to be B ( Λ c + p K + π - ) / B ( Λ c + p K - π + ) = ( 2.35 ± 0.27 ± 0.21 ) × 10 - 3 , where the uncertainties are statistical and systematic, respectively.

Research Organization:
Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Organization:
Belle Collaboration
Grant/Contract Number:
SC0009973
OSTI ID:
1594387
Alternate ID(s):
OSTI ID: 1259585
Report Number(s):
PNNL-SA-120175; PRLTAO; TRN: US2101593
Journal Information:
Physical Review Letters, Vol. 117, Issue 1; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 35 works
Citation information provided by
Web of Science

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Cited By (4)

Hyperon production in Λ c + K p π + and Λ c + K S 0 p π 0 journal August 2019
Visible narrow cusp structure in Λ c + p K π + enhanced by triangle singularity journal September 2019
Observation of the doubly Cabibbo-suppressed decay Ξ c +  → pϕ text January 2019
Observation of the doubly Cabibbo-suppressed decay Ξ c +  → pϕ journal April 2019

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