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

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

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}, consiste...

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מידע ביבליוגרפי
Main Authors: Collaboration, TCLEO, Besson, D, Hogan, D, Pedlar, T, Cronin-Hennessy, D, Hietala, J, Zweber, P, Dobbs, S, Metreveli, Z, Seth, K, Tomaradze, A, Xiao, T, Brisbane, S, Martin, L, Powell, A, Spradlin, P, Wilkinson, G, Mendez, H, Ge, J, Miller, D, Shipsey, I, Xin, B, Adams, G, Hu, D, Moziak, B
פורמט: Journal article
יצא לאור: 2010
תיאור
סיכום: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.

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