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Measurements of the branching fraction ratio B(ϕ→μ+μ−)/B(ϕ→e+e−) with charm meson decays

Aaij, R. ; Ruiz-Vidal, Joan LU and Zunica, G. (2024) In Journal of High Energy Physics 2024(5).
Abstract
Measurements of the branching fraction ratio B(ϕ→μ+μ−)/B(ϕ→e+e−) with Ds +→π+ϕ and D+→ π+ϕ decays, denoted Rϕπ s and Rϕπ d, are presented. The analysis is performed using a dataset corresponding to an integrated luminosity of 5.4 fb−1 of pp collision data collected with the LHCb experiment. The branching fractions are normalised with respect to the B+ → K+J/ψ(→ e+e−) and B+ → K+J/ψ(→ μ+μ−) decay modes. The combination of the results yields (Formula presented.) The result is compatible with previous measurements of the ϕ → ℓ+ℓ− branching fractions and predictions based on the Standard Model. © The Author(s) 2024.
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publishing date
type
Contribution to journal
publication status
published
subject
keywords
B Physics, Branching fraction, Charm Physics, Hadron-Hadron Scattering
in
Journal of High Energy Physics
volume
2024
issue
5
article number
293
publisher
Springer
external identifiers
  • scopus:85201286298
ISSN
1029-8479
DOI
10.1007/JHEP05(2024)293
language
English
LU publication?
yes
id
fb59ab6c-bf2f-409d-80a5-6e597342f040
date added to LUP
2024-10-04 13:29:38
date last changed
2025-04-04 15:30:16
@article{fb59ab6c-bf2f-409d-80a5-6e597342f040,
  abstract     = {{Measurements of the branching fraction ratio B(ϕ→μ+μ−)/B(ϕ→e+e−) with Ds         +→π+ϕ and D+→ π+ϕ decays, denoted Rϕπ         s and Rϕπ         d, are presented. The analysis is performed using a dataset corresponding to an integrated luminosity of 5.4 fb−1 of pp collision data collected with the LHCb experiment. The branching fractions are normalised with respect to the B+ → K+J/ψ(→ e+e−) and B+ → K+J/ψ(→ μ+μ−) decay modes. The combination of the results yields (Formula presented.) The result is compatible with previous measurements of the ϕ → ℓ+ℓ− branching fractions and predictions based on the Standard Model. © The Author(s) 2024.}},
  author       = {{Aaij, R. and Ruiz-Vidal, Joan and Zunica, G.}},
  issn         = {{1029-8479}},
  keywords     = {{B Physics; Branching fraction; Charm Physics; Hadron-Hadron Scattering}},
  language     = {{eng}},
  number       = {{5}},
  publisher    = {{Springer}},
  series       = {{Journal of High Energy Physics}},
  title        = {{Measurements of the branching fraction ratio B(ϕ→μ+μ−)/B(ϕ→e+e−) with charm meson decays}},
  url          = {{http://dx.doi.org/10.1007/JHEP05(2024)293}},
  doi          = {{10.1007/JHEP05(2024)293}},
  volume       = {{2024}},
  year         = {{2024}},
}