In:
Journal of High Energy Physics, Springer Science and Business Media LLC, Vol. 2022, No. 5 ( 2022-05-11)
Abstract:
A search for the decay B 0 → ϕμ + μ − is performed using proton-proton collisions at centre-of-mass energies of 7, 8, and 13 TeV collected by the LHCb experiment and corresponding to an integrated luminosity of 9 fb − 1 . No evidence for the B 0 → ϕμ + μ − decay is found and an upper limit on the branching fraction, excluding the ϕ and charmonium regions in the dimuon spectrum, of 4 . 4 × 10 − 3 at a 90% credibility level, relative to that of the $$ {B}_s^0 $$ B s 0 → ϕμ + μ − decay, is established. Using the measured $$ {B}_s^0 $$ B s 0 → ϕμ + μ − branching fraction and assuming a phase-space model, the absolute branching fraction of the decay B 0 → ϕμ + μ − in the full q 2 range is determined to be less than 3 . 2 × 10 − 9 at a 90% credibility level.
Type of Medium:
Online Resource
ISSN:
1029-8479
DOI:
10.1007/JHEP05(2022)067
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2022
detail.hit.zdb_id:
2027350-2
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