Radiative weak decays of charm mesons.

ar X iv : h ep - p h / 02 08 20 1 v 1 2 2 A ug 2 00 2 The rare decays of D mesons

The flavor changing transitions in the c → uγ, c → uγγ and c → ul + l − offer the possibility to search for new physics in the charm sector. We investigate dominant decay mechanisms in the radiative decays D → V γ, D → P (V)l + l − , D → γγ and we discuss chances to see physics beyond the standard model in these decays. In addition, we analyze Cabibbo allowed D → Kπγ decays with nonresonant Kπ,...

Charm Radiative Decays with Neutral Mesons

Vector and pseudoscalar charm meson radiative decays.

Combining heavy quark effective theory and the chiral Lagrangian approach we investigate radiative decays of pseudoscalar D mesons. We first reanalyse D∗ → Dγ decays within the effective Lagrangian approach using heavy quark spin symmetry, chiral symmetry Lagrangian, but including also the light vector mesons. We then investigate D → V γ decays and calculate the D → K̄∗0γ and D → ργ partial widt...

– 1– Charm Dalitz Plot Analysis Formalism and Results (expanded Rpp-2004 Version)

Introduction: Charm meson decay dynamics have been studied extensively over the last decade. Recent studies of multi-body decays of charm mesons probe a variety of physics including doubly-Cabibbo suppressed decays [1], searches for CP violation [1,2,3], the properties of established light mesons [4,5,6] and the properties of ππ [1,6,7] and Kπ [8] S-wave states. Future studies could improve sen...

Weak Radiative Decays of Hyperons and of Charm and Beauty Baryons *

A review is presented of the weak radiative decays of baryons. It includes an analysis of the possible contributions of electromagnetic penguins to these decays, a survey of the difficulties still encountered in the sector of hyperon decays and a short account on some new developments on this topic. The theoretical treatments on charm and beauty baryon decays are summarized, with a good outlook...