Dr
Nejc Kosnik
(Laboratoire de l'accelerateur lineaire)
16/05/2012 15:10
We discuss the advantages of combining the experimental bound on B(Bs->mu+ mu-) and the measured B(B->Kl+l-) to get the model independent constraints on physics beyond the Standard Model. Since the two decays give complementary information, one can study not only the absolute values of the Wilson coefficients that are zero in the Standard Model, but also their phases. We also emphasize the...
Dr
David GREYNAT
(Fisica Teorica - Uni. de Zaragoza)
16/05/2012 15:35
With the help of the Mellin-Barnes transform, we show how to simultaneously resum the expansion of any kind of non-analytic functions around 0, 1 and $ infinity$ in a systematic way. We exemplify the method for the perturbative vector, axial scalar and pseudo-scalar correlator at $\mathcal{O}(\alpha_s^{3})$. We show that the coefficients, $\Omega(n)$, of the Taylor expansion of the vacuum...
