Abstract
We report on a study of exclusive radiative decays of the Gamma(1S) resonance into a final state consisting of a photon and two K-S(0) candidates. We find evidence for a signal for Gamma(1S) -> gamma f(2)(')(1525); f(2)(') f(2)'(1525) -> gamma(KSKS0)-K-0, at a rate Bd(Y1S) -> gamma f(2)(')(1525)) = (4.0 +/- 1.3 +/- 0.6) x 10(-5), consistent with previous observations of Gamma(1S) -> gamma f(2)(')(1525); f(2)(')(1525) -> K+K-, and isospin. Combining this branching fraction with existing branching fraction measurements of Gamma(1S) -> gamma f(2)(')(1525) and J/psi -> gamma f(2)'(1525), we obtain the ratio of branching fractions: B(Gamma(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.
Published in:
Physical Review D 83,3 (2011)
Link to original published article:
http://dx.doi.org/10.1103/PhysRevD.83.037101
Date of Version
February 2011
Recommended Citation
Besson, D.; Hogan, D. P.; Pedlar, T. K.; Cronin-Hennessy, D.; Hietala, J.; Zweber, P.; Dobbs, S.; Metreveli, Z.; Seth, K. K.; Tomaradze, A.; Xiao, T.; Brisbane, S.; Martin, L.; Powell, A.; Spradlin, P.; Wilkinson, G.; Mendez, H.; Ge, J. Y.; Miller, D. H.; Shipsey, I. P. J.; Xin, B.; Adams, G. S.; Hu, D.; Moziak, B.; Napolitano, J.; Ecklund, K. M.; Insler, J.; Muramatsu, H.; Park, C. S.; Pearson, L. J.; Thorndike, E. H.; Yang, F.; Ricciardi, S.; Thomas, C.; Artuso, M.; Blusk, S.; Mountain, R.; Skwarnicki, T.; Stone, S.; Wang, J. C.; Zhang, L. M.; Bonvicini, G.; Cinabro, D.; Lincoln, A.; Smith, M. J.; Zhou, P.; Zhu, J.; Naik, P.; Rademacker, J.; Asner, D. M.; Edwards, K. W.; Randrianarivony, K.; Tatishvili, G.; Briere, R. A.; Vogel, H.; Onyisi, P. U. E.; Rosner, J. L.; Alexander, J. P.; Cassel, D. G.; Das, S.; Ehrlich, R.; Fields, L.; Gibbons, L.; Gray, S. W.; Hartill, D. L.; Heltsley, B. K.; Kreinick, D. L.; Kuznetsov, V. E.; Patterson, J. R.; Peterson, D.; Riley, D.; Ryd, A.; Sadoff, A. J.; Shi, X.; Sun, W. M.; Yelton, J.; Rubin, P.; Lowrey, N.; Mehrabyan, S.; Selen, M.; Wiss, J.; Libby, J.; Kornicer, M.; Mitchell, R. E.; and Tarbert, C. M., "Gamma(1S) -> gamma f(2)'(1525); f(2)'(1525) -> (KSKS0)-K-0 decays" (2011). Department of Physics and Astronomy Faculty Publications. Paper 1172.
https://docs.lib.purdue.edu/physics_articles/1172