Time-Dependent Analysis of B⁰ → K_s⁰ π⁻π⁺γ Decays and Studies of the K⁺π⁻π⁺ System in B⁺ → K⁺π⁻π⁺γ Decays

DSpace/Manakin Repository

Time-Dependent Analysis of B⁰ → K_s⁰ π⁻π⁺γ Decays and Studies of the K⁺π⁻π⁺ System in B⁺ → K⁺π⁻π⁺γ Decays

Show full item record

Title: Time-Dependent Analysis of B⁰ → K_s⁰ π⁻π⁺γ Decays and Studies of the K⁺π⁻π⁺ System in B⁺ → K⁺π⁻π⁺γ Decays
Author(s):
del Amo Sanchez. P.;
Lees, J. P.;
Poireau, V.;
Tisserand, V.;
Grauges, E.;
Palano, A.;
Eigen, G.;
Izen, Joseph M. (UT Dallas);
Lou, Xinchou (UT Dallas)
Item Type: article
Keywords: Show Keywords
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.
Publisher: American Physical Society
ISSN: 1550-7998 (ISSN)
Persistent Link: http://dx.doi.org/10.1103/PhysRevD.93.052013
http://hdl.handle.net/10735.1/5602
Bibliographic Citation: del Amo Sanchez, P., J. P. Lees, V. Poireau, V. Tisserand, et al. 2016. "Time-dependent analysis of B⁰ → K_s⁰ π⁻π⁺γ decays and studies of the K⁺π⁻π⁺ system in B⁺ → K⁺π⁻π⁺γ decays." Physical Review D - Particles, Fields, Gravitation and Cosmology 93(5), doi:10.1103/PhysRevD.93.052013
Terms of Use: ©2016 American Physical Society. All Rights Reserved.
Sponsors:

Files in this item

Files Size Format View
NSM-2307-6854.42.pdf 1.312Mb PDF View/Open Article

This item appears in the following Collection(s)


Show full item record