Observation of the hadronic transitions Xb1,2(2P) → ωY(1S)

D. Cronin-Hennessy, C. S. Park, W. Park, J. B. Thayer, E. H. Thorndike, T. E. Coan, Y. S. Gao, F. Liu, R. Stroynowski, M. Artuso, C. Boulahouache, S. Blusk, E. Dambasuren, O. Dorjkhaidav, R. Mountain, H. Muramatsu, R. Nandakumar, T. Skwarnicki, S. Stone, J. C. WangA. H. Mahmood, S. E. Csorna, G. Bonvicini, D. Cinabro, M. Dubrovin, A. Bornheim, E. Lipeles, S. P. Pappas, A. Shapiro, W. M. Sun, A. J. Weinstein, R. A. Briere, G. P. Chen, T. Ferguson, G. Tatishvili, H. Vogel, M. E. Watkins, N. E. Adam, J. P. Alexander, K. Berkelman, V. Boisvert, D. G. Cassel, J. E. Duboscq, K. M. Ecklund, R. Ehrlich, R. S. Galik, L. Gibbons, B. Gittelman, S. W. Gray, D. L. Hartill

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22 Scopus citations

Abstract

The observations for the hadronic decays of the bottomonium states were discussed. Hadronic transitions proceeded by the emission of low momentum gluons and subsequent hardronization of the gluons. Photons were detected using an electromagnetic calorimeter which consisted of 7784 Csl (TI) crystals. It was observed that the ratio of the measured branching ratios for the two transitions were in agreement with theoretical expactations based on S wave phase space factors for multipole expansions.

Original languageEnglish (US)
Article number222002
Pages (from-to)222002-1-222002-5
JournalPhysical review letters
Volume92
Issue number22
DOIs
StatePublished - Jul 4 2004

Bibliographical note

Funding Information:
We gratefully acknowledge the effort of the CESR staff in providing us with excellent luminosity and running conditions. This work was supported by the National Science Foundation, the U.S. Department of Energy, the Research Corporation, and the Texas Advanced Research Program.

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