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Measurement of the branching fraction of the decay B- →d0ρ (770)- at Belle II

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

Periodico
PHYSICAL REVIEW D
Abstract
We measure the branching fraction of the decay B-→D0ρ(770)- using data collected with the Belle II detector. The data contain 387 million BB ̄ pairs produced in e+e- collisions at the Υ(4S) resonance. We reconstruct 8360±180 decays from an analysis of the distributions of the B- energy and the ρ(770)- helicity angle. We determine the branching fraction to be (0.939±0.021(stat)±0.050(syst))%, in agreement with previous results. Our measurement improves the relative precision of the world average by more than a factor of two.
DOI
10.1103/physrevd.109.l111103
WOS
WOS:001351426000001
Archivio
https://hdl.handle.net/11368/3097839
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85196804734
https://journals.aps.org/prd/abstract/10.1103/PhysRevD.109.L111103
Diritti
open access
license:creative commons
license uri:http://creativecommons.org/licenses/by/4.0/
FVG url
https://arts.units.it/bitstream/11368/3097839/1/PhysRevD.109.L111103.pdf
Soggetti
  • Belle II

  • SuperKEKB

  • Standard Model

  • B meson

  • Bottom mesons

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