Bai, J. Z. and Hatanaka, M. and Hitlin, D. G. and Jones, L. and Kelsey, M. H. and Oyang, J. and Panetta, J. and Porter, F. and Prabhakar, E. and Shi, X. R. (1995) Direct measurement of the D_s branching fraction to φπ. Physical Review D, 52 (7). pp. 3781-3784. ISSN 0556-2821. http://resolver.caltech.edu/CaltechAUTHORS:20120215-143117818
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The Beijing Spectrometer (BES) Collaboration has observed exclusive pair production of D_s mesons at the Beijing Electron-Positron Collider (BEPC) at a center-of-mass energy of 4.03 GeV. The D_s mesons are detected in the φπ^+, K¯^(*0)K^+, and K¯^0K^+ decay modes; two fully reconstructed events yield the value (3.9_(-1.9-1.1)^(+5.1+1.8))% for the D_s branching fraction to φπ. This is the first direct, model-independent measurement of this quantity.
|Additional Information:||© 1995 The American Physical Society. Received 28 April 1995; published in the issue dated 1 October 1995. We gratefully acknowledge the dedicated efforts of the BEPC staff, the Institute of High Energy Physics Computing Center, and the Texas High Performance Computing Center (formerly the Physics Detector Simulation Facility). We thank Professor Chaohsi Chang for useful discussions of D. physics. This work was supported in part by the National Natural Science Foundation of China under Contract No. 19290400 and the Chinese Academy of Sciences under Contract No. KJ85 (IHEP), by the Department of Energy under Contract Nos. DE-FG02-91ER40676 (Boston University), DE-FG03-92ER40701 (Caltech), DE-FG03-93ER40788 (Colorado State University), DE-AC02-76ER03069 (MIT), DEAC03-76SF00515 (SLAC), DE-FG03-91ER40679 (UC Irvine), DE-FG03-94ER40833 (U Hawaii), DE-FG05-92ER40736 (UT Dallas), DE-AC35-89ER40486 (SSC Lab), by the U.S. National Science Foundation, Grant No. PHY9203212 (University of Washington), and by the Texas National Research Laboratory Commission under Contract Nos. RGFY91B5, RGFY92B5 (Colorado State), and RCFY93-316H (UT Dallas).|
|Classification Code:||PACS: 13.25.Ft, 14.40.Ev|
|Official Citation:||Direct measurement of the Ds branching fraction to φπ J. Z. Bai et al. pp. 3781-3784|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Ruth Sustaita|
|Deposited On:||15 Feb 2012 23:13|
|Last Modified:||26 Dec 2012 14:50|
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