Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-05-22
Physics
High Energy Physics
High Energy Physics - Phenomenology
Ph.D. Thesis, 158 pages. v2: typos in Appendix A.2 corrected (thanks to R. Bonciani, A. Ferroglia and T. Huber for pointing th
Scientific paper
We discuss exclusive charmless B decays within the Standard Model of particle physics. In particular, we consider hadronic two-body decays as B -> pi pi and perform a conceptual analysis of heavy-to-light form factors which encode the strong interaction effects in semi-leptonic decays as B -> pi l nu. Concerning the hadronic decays we compute NNLO QCD corrections which are particularly important with respect to strong interaction phases and hence direct CP asymmetries. We present results for the imaginary part of the topological tree amplitudes and a partial calculation of the real part of the amplitudes which is technically more involved. In our conceptual analysis of the QCD dynamics in heavy-to-light transitions we consider form factors between non-relativistic bound states. We perform a NLO analysis and compute the so-called soft-overlap contribution which is calculable in our set-up. As a byproduct of our analysis, we calculate leading-twist light-cone distribution amplitudes for non-relativistic bound states which can be applied for B_c or eta_c mesons.
No associations
LandOfFree
Higher order QCD corrections in exclusive charmless B decays does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Higher order QCD corrections in exclusive charmless B decays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Higher order QCD corrections in exclusive charmless B decays will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-415945