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27 April 2024

» arxiv » 1101.0153

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Upsilon(1S)->gamma+f2'(1525); f2'(1525)->K0sK0s decays
CLEO Collaboration ; D. Besson ; D. P. Hogan ; T. K. Pedlar ; D. Cronin-Hennessy ; J. Hietala ; P. Zweber ; S. Dobbs ; Z. Metreveli ; K. K. Seth ; A. Tomaradze ; T. Xiao ; S. Brisbane ; L. Martin ; A. Powell ; P. Spradlin ; G. Wilkinson ; H. Mendez ; J. Y. Ge ; D. H. Miller ; I. P. J. Shipsey ; B. Xin ; G. S. Adams ; D. Hu ; B. Moziak ; J. Napolitano ; K. M. Ecklund ; J. Insler ; H. Muramatsu ; C. S. Park ; L. J. Pearson ; E. H. Thorndike ; F. Yang ; S. Ricciardi ; C. Thomas ; M. Artuso ; S. Blusk ; R. Mountain ; T. Skwarnicki ; S. Stone ; J. C. Wang ; L. M. Zhang ; G. Bonvicini ; D. Cinabro ; A. Lincoln ; M. J. Smith ; P. Zhou ; J. Zhu ; P. Naik ; J. Rademacker ; D. M. Asner ; K. W. Edwards ; K. Randrianarivony ; G. Tatishvili ; R. A. Briere ; H. Vogel ; P. U. E. Onyisi ; J. L. Rosner ; J. P. Alexander ; D. G. Cassel ; S. Das ; R. Ehrlich ; L. Fields ; L. Gibbons ; S. W. Gray ; D. L. Hartill ; B. K. Heltsley ; D. L. Kreinick ; V. E. Kuznetsov ; J. R. Patterson ; D. Peterson ; D. Riley ; A. Ryd ; A. J. Sadoff ; X. Shi ; W. M. Sun ; J. Yelton ; P. Rubin ; N. Lowrey ; S. Mehrabyan ; M. Selen ; J. Wiss ; J. Libby ; M. Kornicer ; R. E. Mitchell ; C. M. Tarbert ;
Date:	30 Dec 2010
Abstract:	We report on a study of exclusive radiative decays of the Upsilon(1S) resonance into a final state consisting of a photon and two K0s candidates. We find evidence for a signal for Upsilon(1S)->gamma f_2’(1525); f_2’(1525)->K0sK0s, at a rate (4.0+/-1.3+/-0.6)x10^{-5}, consistent with previous observations of Upsilon(1S)->gamma f_2’(1525); f_2’(1525)->K+K-, and isospin. Combining this branching fraction with existing branching fraction measurements of Upsilon(1S)->gamma f_2’(1525) and J/psi->gamma f_2’(1525), we obtain the ratio of branching fractions: B(Upsilon(1S)->gamma f_2’(1525))/B(J/psi->gamma f_2’(1525))=0.09+/-0.02, approximately consistent with expectations based on soft collinear effective theory.
Source:	arXiv, 1101.0153
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