Octet contributions in radiative upsilon decays

Details Octet contributions in radiative upsilon decays Octet contributions in radiative upsilon decays

2004-10-04

arxiv.org/abs/hep-ph/0410052v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 2 figures, talk given at Quark Confinement and the Hadron Spectrum VI, to appear in the proceedings

Scientific paper

We analyze the end-point region of the photon spectrum in semi-inclusive
radiative decays of very heavy quarkonium (m alpha_s^2 >> Lambda_QCD). The S-
and P-wave octet shape functions are calculated. When they are included in the
analysis of the photon spectrum of the Upsilon (1S) system the agreement with
data becomes excellent.

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