Brief Reports γ(1 S) →γf2′(1525); F2′(1525)→ KS0KS0, decays.

Date Issued
23-02-2011
Author(s)
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.
Indian Institute of Technology, Madras
Kornicer, M.
Mitchell, R. E.
Tarbert, C. M.
DOI
Abstract
We report on a study of exclusive radiative decays of the Υ(1S) resonance into a final state consisting of a photon and two KS0 candidates. We find evidence for a signal for Υ(1S)→γf2′(1525); f2′(1525)→γKS0KS0, at a rate B(Υ(1S) →γf2′(1525))=(4.0±1.3±0.6)×10-5, consistent with previous observations of Υ(1S)→γf2′(1525) ; f2′(1525)→K+K-, and isospin. Combining this branching fraction with existing branching fraction measurements of Υ(1S)→γf2′(1525) and J/ψ→γf2′(1525), we obtain the ratio of branching fractions: B(Υ(1S) →γf2′(1525))/B(J/ψ→γf2′(1525))=0. 09±0.02, approximately consistent with expectations based on soft-collinear effective theory. © 2011 American Physical Society.
Volume
83