Download or read book Measuring B to S Gamma, B to D Gamma and written by and published by . This book was released on 2012 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using a sample of 471 million B{bar B} events collected with the BaBar detector, we study the sum of seven exclusive final states b → X{sub s(d)}?, where X{sub s(d)} is a strange (non-strange) hadronic system with a mass of up to 2.0 Gev/c2. After correcting for unobserved decay modes, we obtain a branching fraction for b → d? of (9.2 ± 2.0(stat.) ± 2.3(syst.)) x 10−6 in this mass range, and a branching fraction for b → s? of (23.0 ± 0.8(stat.) ± 3.0(syst.)) x 10−5 in the same mass range. We find BF(b → d?)/BF(b → s?) = 0.040 ± 0.009(stat.) ± 0.010(syst.), from which we determine.