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Time-dependent analysis of B0 → KS0 π-π+γ decays and studies of the K+π-π+ system in B+ →k+π-π+γ decays

Del Amo Sanchez, P.
•
Lees, J. P.
•
Poireau, V.
altro
Wu, S. L.
2016
  • journal article

Periodico
PHYSICAL REVIEW D
Abstract
We measure the time-dependent CP asymmetry in the radiative-penguin decay B0→KS0π-π+γ, using a sample of 471×106 (4S)→BB-events recorded with the BABAR detector at the PEP-II e+e- storage ring at SLAC. Using events with mKππ<1.8 GeV/c2, we measure the branching fractions of B+→K+π-π+γ and B0→K0π-π+γ, the branching fractions of the kaonic resonances decaying to K+π-π+, as well as the overall branching fractions of the B+→ρ0K+γ, B+→K∗0π+γ and S-wave B+→(Kπ)0∗0π+γ components. For events from the ρ mass band, we measure the CP-violating parameters SKS0π+π-γ=0.14±0.25±0.03 and CKS0π+π-γ=-0.39±0.20-0.02+0.03, where the first uncertainties are statistical and the second are systematic. We extract from this measurement the time-dependent CP asymmetry related to the CP eigenstate ρ0KS0 and obtain SKS0ργ=-0.18±0.32-0.05+0.06, which provides information on the photon polarization in the underlying b→sγ transition.
DOI
10.1103/PhysRevD.93.052013
WOS
WOS:000373106200001
Archivio
http://hdl.handle.net/11368/2899036
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84962469319
https://journals.aps.org/prd/abstract/10.1103/PhysRevD.93.052013
Diritti
closed access
license:digital rights management non definito
FVG url
https://arts.units.it/request-item?handle=11368/2899036
Soggetti
  • Nuclear and High Ener...

Scopus© citazioni
20
Data di acquisizione
Jun 14, 2022
Vedi dettagli
Web of Science© citazioni
13
Data di acquisizione
Mar 26, 2024
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