The Resummed Photon Spectrum in Radiative Upsilon Decays

Abstract

We present a theoretical prediction for the photon spectrum in radiative Upsilon decay including the effects of resumming the endpoint region, E_γ-> M_Υ/2. Our approach is based on NRQCD and the soft collinear effective theory. We find that our results give much better agreement with data than the leading order NRQCD prediction.

4 pages, 6 figures

References in corpus (1)

• Hard Scattering Factorization from Effective Field Theory

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