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Phys. Rev. D 67, 052003 (2003) [9 pages]

Inclusive η production from the Υ(1S)

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M. Artuso et al. (CLEO Collaboration)
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Received 11 November 2002; published 17 March 2003

Using the CLEO II detector at CESR, we measure the η energy spectra in Υ(1S) decays that we compare with models of the ηg*g form factor. This form factor, especially at large η energies, may provide an explanation of the large rate for BXsη. Our data do not support a large anomalous coupling at higher q2 and thus the large η rate remains a mystery, possibly requiring a non-standard-model explanation.

© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevD.67.052003
DOI:
10.1103/PhysRevD.67.052003
PACS:
13.25.Gv, 13.25.Hw, 13.66.Bc