Study of B -> X gamma Decays and Determination of |V_td/V_ts|
High Energy Physics - Experiment
2014-11-21 v1
Abstract
Using a sample of 471 million BBbar events collected with the BaBar detector, we study the sum of seven exclusive final states B->X_s(d) gamma, where X_s(d) is a strange (non-strange) hadronic system with a mass of up to 2.0GeV/c^2. After correcting for unobserved decay modes, we obtain a branching fraction for b->d gamma of (9.2 +/- 2.0(stat.) +/- 2.3(syst.))x10^-6 in this mass range, and a branching fraction for b->s gamma of (23.0 +/- 0.8(stat.) +/- 3.0(syst.))x10^-5 in the same mass range. We find BF(b->dgamma) / BF(b->sgamma) = 0.040 +/- 0.009(stat.) +/- 0.010(syst.), from which we determine |V_td/V_ts|=0.199 +/- 0.022(stat.) +/- 0.024(syst.) +/- 0.002(th.).
Cite
@article{arxiv.1005.4087,
title = {Study of B -> X gamma Decays and Determination of |V_td/V_ts|},
author = {The BABAR Collaboration and P. del Amo Sanchez},
journal= {arXiv preprint arXiv:1005.4087},
year = {2014}
}
Comments
7 pages, 1 figure, submitted to PRL