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Search for the rare decay of charmed baryon Λc+ into the pμ+μ- final state

Aaij, R. ; Ruiz-Vidal, Joan LU and Zunica, G. (2024) In Physical Review D 110(5).
Abstract
A search for the nonresonant Λc+→pμ+μ- decay is performed using proton-proton collision data recorded at a center-of-mass energy of 13 TeV by the LHCb experiment, corresponding to an integrated luminosity of 5.4 fb-1. No evidence for the decay is found in the dimuon invariant-mass regions where the expected contributions of resonances is subdominant. The upper limit on the branching fraction of the Λc+→pμ+μ- decay is determined to be 2.9(3.2)×10-8 at 90%(95%) confidence level. The branching fractions in the dimuon invariant-mass regions dominated by the η, ρ and ω resonances are also determined. © 2024 CERN.
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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review D
volume
110
issue
5
article number
052007
publisher
American Physical Society
external identifiers
  • scopus:85206312551
ISSN
2470-0010
DOI
10.1103/PhysRevD.110.052007
language
English
LU publication?
yes
id
cc7af4ba-cbb6-41c5-a6d6-a97f4c6d0b4a
date added to LUP
2025-10-14 15:32:26
date last changed
2025-10-14 15:32:53
@article{cc7af4ba-cbb6-41c5-a6d6-a97f4c6d0b4a,
  abstract     = {{A search for the nonresonant Λc+→pμ+μ- decay is performed using proton-proton collision data recorded at a center-of-mass energy of 13 TeV by the LHCb experiment, corresponding to an integrated luminosity of 5.4 fb-1. No evidence for the decay is found in the dimuon invariant-mass regions where the expected contributions of resonances is subdominant. The upper limit on the branching fraction of the Λc+→pμ+μ- decay is determined to be 2.9(3.2)×10-8 at 90%(95%) confidence level. The branching fractions in the dimuon invariant-mass regions dominated by the η, ρ and ω resonances are also determined. © 2024 CERN.}},
  author       = {{Aaij, R. and Ruiz-Vidal, Joan and Zunica, G.}},
  issn         = {{2470-0010}},
  language     = {{eng}},
  number       = {{5}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review D}},
  title        = {{Search for the rare decay of charmed baryon Λc+ into the pμ+μ- final state}},
  url          = {{http://dx.doi.org/10.1103/PhysRevD.110.052007}},
  doi          = {{10.1103/PhysRevD.110.052007}},
  volume       = {{110}},
  year         = {{2024}},
}