2013/03/05 by Florian U. Bernlochner, Bernlochner, Florian U., Heiko Lacker +9
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #hep-ex #hep-ph
paper · pdf · doi:10.48550/arxiv.1303.0958
Proceedings of CKM 2012, the 7th International Workshop on the CKM Unitarity Triangle, University of Cincinnati, USA, 28 September - 2 October 2012
arxiv created 2013/03/05 · arxiv updated 2013/03/06
The goal of the SIMBA collaboration is to provide a global fit to the available measurements of inclusive B -> Xs gamma and B -> Xu l nu decays. By performing a global fit one is able to simultaneously determine the relevant normalizations, i.e. the total B -> Xs gamma rate and the CKM-matrix element |Vub|, together with the required hadronic parameters, most importantly the b-quark mass and the b-quark distribution function in the B-meson, called the shape function. In this talk, the current status on the model-independent determination of the shape function and |C7^\incl Vtb Vts*|, which parametrizes the total B -> Xs gamma rate, from a global fit to the available B -> Xs gamma measurements from Babar and Belle is presented. In particular, the theoretical uncertainties originating from variations of the different factorization scales are evaluated.