b-> s gamma and b-> d gamma (B factories)

Details b-> s gamma and b-> d gamma (B factories) b-> s gamma and b-> d gamma (B factories)

2011-02-09

arxiv.org/abs/1102.1925v1

Physics

High Energy Physics

High Energy Physics - Experiment

Proceeding of CKM2010, the 6th international Workshop on the CKM Unitarity Triangle, University of Warwick, UK, 6-10 September

Scientific paper

The photon spectrum in B->X_{s,d} \gamma decay, where X_s(d) is any strange (non-strange) hadronic state, is studied using data samples of $e^+e^- \rightarrow \Upsilon(4S) \to B B-bar decays collected by the Babar and Belle experiments. Here I present the latest measurements of the branching fraction and spectral mo ments from B -> X_s gamma$ decays by Belle and the direct CP asymmetry of B->X_{s+d} gamma measured at Babar. The determination of |V_{td}/V_{ts}|^2$ i also presented.

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