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- W2343505368 abstract "We measure the time-dependent CP asymmetry in the radiative-penguin decay B0→KS0π−π+γ, using a sample of 471×106 ϒ(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.1 MoreReceived 19 December 2015DOI:https://doi.org/10.1103/PhysRevD.93.052013© 2016 American Physical SocietyPhysics Subject Headings (PhySH)Research AreasLeptonic, semileptonic & radiative decaysPhysical SystemsBottom mesonsPropertiesCP violationParticles & Fields" @default.
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