3,461 research outputs found
Theory of Inclusive Radiative B Decays
This talk discusses recent developments in the theory of inclusive radiative
B decays, focusing mainly on non-perturbative aspects of B->Xs gamma.Comment: Proceedings of CKM2010, the 6th International Workshop on the CKM
Unitarity Triangle, University of Warwick, UK, 6-10 September 201
From A to Z': Combining Anomaly and Z' Mediation of Supersymmetry Breaking
Combining anomaly with Z' mediation allows us to solve the tachyonic slepton
problem of the former and avoid fine tuning in the latter. We describe how the
two mechanisms can be combined, and some of the phenomenology of such a joint
scenario.Comment: Talk given at the 17th International Conference On Supersymmetry And
The Unification Of Fundamental Interactions (SUSY 09), 5-10 Jun 2009, Boston,
Massachusetts, US
Theory of radiative B decays
This talk discusses the theory of inclusive and exclusive radiative B decays,
emphasizing the interplay of perturbative and non-perturbative effects and the
importance CP and isospin asymmetries.Comment: 5 page
On HQET and NRQCD Operators of Dimension 8 and Above
Effective field theories such as Heavy Quark Effective Theory (HQET) and Non
Relativistic Quantum Chromo-(Electro-) dynamics NRQCD (NRQED) are indispensable
tools in controlling the effects of the strong interaction. The increasing
experimental precision requires the knowledge of higher dimensional operators.
We present a general method that allows for an easy construction of HQET or
NRQCD (NRQED) operators that contain two heavy quark or non-relativistic fields
and any number of covariant derivatives. As an application of our method, we
list these terms in the NRQCD Lagrangian, where is the mass of of
the spin-half field.Comment: 28 pages, footnote added, journal versio
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