Stability of theE2/M1ratio at theT-matrix pole

E 2 / M 1 ratio at the T - matrix pole

We show how the stability of the E2/M1 ratio, evaluated at the T-matrix pole, can be understood given a much wider variation at the

Spectral Analysis of Gluonic Pole Matrix Elements

We use a spectator framework to investigate the spectral properties of quark-quarkgluon correlators and use this to study gluonic pole matrix elements. Such matrix elements appear in principle both for distribution functions such as the Sivers function and fragmentation functions such as the Collins function. We find that the contribution of the gluonic pole matrix element in fragmentation func...

SUSY at the Pole

We study the role neutrino telescopes could play in discovering supersymmetric extensions of the Standard Model with a long-lived stau next-to-lightest superparticle. In such a setup, pairs of staus are produced by cosmic neutrino interactions in the Earth matter. In optimistic scenarios, one can expect several pair events per year in a cubic kilometer detector such as IceCube. We also show tha...

Gluonic Pole Matrix Elements and Universality

We investigate the spectral properties of quark-quark-gluon correlators and use this to study gluonic pole matrix elements. Such matrix elements appear in principle both for distribution functions such as the Sivers function and fragmentation functions such as the Collins function. We find that for a large class of spectator models, the contribution of the gluonic pole matrix element for fragme...

Bottom quark pole mass and |Vcb | matrix