Radiative decays of the Y (1S) to a pair of charged hadrons

Athar, S. B. and Bornheim, A. and Pappas, S. P. and Weinstein, A. J. (2006) Radiative decays of the Y (1S) to a pair of charged hadrons. Physical Review D, 73 (3). Art. No. 032001. ISSN 0556-2821 http://resolver.caltech.edu/CaltechAUTHORS:20110210-145105067

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Abstract

Using data obtained with the CLEO III detector, running at the Cornell Electron Storage Ring (CESR), we report on a new study of exclusive radiative Υ(1S) decays into the final states γπ^+π^-, γK^+K^-, and γpp̅ . We present branching ratio measurements for the decay modes Υ(1S)→γf_2(1270), Υ(1S)→γf′_2(1525), and Υ(1S)→γK^+K^-; helicity production ratios for f_2(1270) and f′_2(1525); upper limits for the decay Υ(1S)→γf_J(2200), with f_J(2220)→π^+π^-, K^+K^-, pp̅ ; and an upper limit for the decay Υ(1S)→γX(1860), with X(1860)→γpp̅ .

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Article

Additional Information:

© 2006 American Physical Society. Received 4 October 2005; published 3 February 2006. 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 and the U.S. Department of Energy.

Funders:

Funding Agency	Grant Number
NSF	UNSPECIFIED
Department of Energy (DOE)	UNSPECIFIED

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PACS: 13.20.Gd

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CaltechAUTHORS:20110210-145105067

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http://resolver.caltech.edu/CaltechAUTHORS:20110210-145105067

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22119

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CaltechAUTHORS

Deposited By:

Benjamin Perez

Deposited On:

10 Feb 2011 23:22

Last Modified:

26 Dec 2012 12:55

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