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arXiv 1101.0153hep-ex
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上升(1 S)-> γ + f2 '(1525); f2 '(1525)-> K0sK0s衰变

Upsilon(1S)->gamma+f2'(1525); f2'(1525)->K0sK0s decays

The 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. Xi… 展开作者

The 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

摘要:

我们报告的独家辐射衰变的Uppermont(1 S)共振到一个光子和两个K 0的候选人组成的最终状态的研究。我们发现了Uppersons(1 S)->gamma f_2 '(1525); f_2'(1525)-> K 0 sK 0 s的信号的证据,其速率为(4.0+/-1.3+/-0.6 x10 ^{-5}),与先前观测到的Uppersons(1 S)->gamma f_2 '(1525); f_2'(1525)->K+K-和同位旋一致。将该支化分数与Uppersons(1 S)->gamma f_2 '(1525)和J/psi->gamma f_2'(1525)的现有支化分数测量相结合,我们获得支化分数的比率:B(Upperdance(1 S)->gamma f_2 '(1525))/B(J/psi->gamma f_2'(1525))=0.09+/-0.02,与基于软共线有效理论的预期大致一致。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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