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Search for Rare b→dl+l− Transitions at Belle

Adachi, I.
•
Aggarwal, L.
•
Aihara, H.
altro
null, null
2024
  • journal article

Periodico
PHYSICAL REVIEW LETTERS
Abstract
: We present the results of a search for the b→dl^{+}l^{-} flavor-changing neutral-current rare decays B^{+,0}→(η,ω,π^{+,0},ρ^{+,0})e^{+}e^{-} and B^{+,0}→(η,ω,π^{0},ρ^{+})μ^{+}μ^{-} using a 711 fb^{-1} data sample that contains 772×10^{6} BB[over ̄] events. The data were collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider. We find no evidence for signal and set upper limits on branching fractions at the 90% confidence level in the range (3.8-47)×10^{-8} depending on the decay channel. The obtained limits are the world's best results. This is the first search for the channels B^{+,0}→(ω,ρ^{+,0})e^{+}e^{-} and B^{+,0}→(ω,ρ^{+})μ^{+}μ^{-}.
DOI
10.1103/physrevlett.133.101804
WOS
WOS:001382516600003
Archivio
https://hdl.handle.net/11368/3097977
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85203448252
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.133.101804
Diritti
open access
license:creative commons
license uri:http://creativecommons.org/licenses/by/4.0/
FVG url
https://arts.units.it/bitstream/11368/3097977/1/PhysRevLett.133.101804.pdf
Soggetti
  • Asymmetric-energy e+e...

  • Belle detector

  • Branching fraction

  • Confidence level

  • Data sample

  • Decay channel

  • Flavor changing neutr...

  • Rare decay

  • Upper limits

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