%0 Journal Article
%T Precision Measurement of the B -> Xs gamma Photon Energy Spectrum, Branching Fraction, and Direct CP Asymmetry ACP(B -> Xs+d gamma)
%A BABAR Collaboration (Lees, J. P. et al
%A Martinez-Vidal, F.
%A Oyanguren, A.
%J Physical Review Letters
%D 2012
%V 109
%N 19
%I Amer Physical Soc
%@ 0031-9007
%G English
%F BABARCollaborationLees_etal2012
%O WOS:000310869600003
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=1259), last updated on Thu, 27 Dec 2012 20:38:30 +0000
%X The photon spectrum in the inclusive electromagnetic radiative decays of the B meson, B --> X-s gamma plus B --> X-d gamma, is studied using a data sample of (382.8 +/- 4.2) x 10(6)Y(4S) --> B (B) over bar decays collected by the BABAR experiment at SLAC. The spectrum is used to extract the branching fraction B(B --> X-s gamma) = (3.21 +/- 0.33) x 10(-4) for E-gamma > 1.8 GeV and the direct CP asymmetry A(CP)(B --> Xs+d gamma) = 0.057 +/- 0.063. The effects of detector resolution and Doppler smearing are unfolded to measure the photon energy spectrum in the B meson rest frame.
%R 10.1103/PhysRevLett.109.191801
%U http://arxiv.org/abs/arXiv:1207.2690
%U https://doi.org/10.1103/PhysRevLett.109.191801
%P 191801-8pp