Inclusive η′ production from the γ(1S)

M. Artuso, C. Boulahouache, S. Blusk, K. Bukin, E. Dambasuren, R. Mountain, H. Muramatsu, R. Nandakumar, T. Skwarnicki, S. Stone, J. C. Wang, A. H. Mahmood, S. E. Csorna, I. Danko, G. Bonvicini, D. Cinabro, M. Dubrovin, S. McGee, A. Bornheim, E. LipelesS. P. Pappas, A. Shapiro, W. M. Sun, A. J. Weinstein, R. A. Briere, G. P. Chen, T. Ferguson, G. Tatishvili, H. Vogel, N. E. Adam, J. P. Alexander, K. Berkelman, V. Boisvert, D. G. Cassel, P. S. Drell, J. E. Duboscq, K. M. Ecklund, R. Ehrlich, R. S. Galik, L. Gibbons, B. Gittelman, S. W. Gray, D. L. Hartill, B. K. Heltsley, L. Hsu, C. D. Jones, J. Kandaswamy, D. L. Kreinick, A. Magerkurth, H. Mahlke-Krüger

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14 Scopus citations


Using the CLEO II detector at CESR, we measure the η′ energy spectra in Y(1S) decays that we compare with models of the η′ g*g form factor. This form factor, especially at large η′ energies, may provide an explanation of the large rate for B→X s η′. Our data do not support a large anomalous coupling at higher q 2 and thus the large η′ rate remains a mystery, possibly requiring a non-standard-model explanation.

Original languageEnglish (US)
Article number052003
JournalPhysical Review D
Issue number5
StatePublished - Dec 1 2003

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