Adler, J. and Coffman, D. and DeJongh, F. and Dubois, G. P. and Eigen, G. and Hauser, J. and Hitlin, D. G. and Matthews, C. G. and Mincer, A. I. and Richman, J. D. and Weinstein, A. J. and Wisniewski, W. J. and Zhu, Y. (1989) Observation of D_s^+ → K^0K^+ and D_s^+ → K^(*0)K^+ and an Upper Limit on D_s^+ → K^0π^+. Physical Review Letters, 63 (12). pp. 1211-1214. ISSN 0031-9007 http://resolver.caltech.edu/CaltechAUTHORS:20120531-104951870
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We report the first observation of the decay D_s^+ → K^0K^+ and a new measurement of the decay D_s^+→K (892)^0K^+. The data were collected at √s=4.14 GeV with the Mark III detector at the SLAC e^+e^- storage ring at SPEAR. We obtain the relative branching fractions B(D^+_s→K^0K^+/ B(D_s^+→φπ^+)=0.92±0.32±0.20 and B(D_s^+→K^*0K^+)/ B(D_s^+→φπ^+)=0.84±0.30±0.22, using our new determination of σB(D_s^+→φπ^+). A search for the Cabibbo-suppressed decay D^+_s→K^0π^+ yields a limit B(D_s^+→K^0π^+)/B(D_s^+→φπ^+)<0.21 at the 90% confidence level.
|Additional Information:||© 1989 The American Physical Society. Received 17 May 1989; published in the issue dated 18 September 1989. We gratefully acknowledge the dedicated efforts of the SPEAR staff. One of us (G.E.) wishes to thank the A. von Humboldt Foundation for support. This work was supported by the Department of Energy, under Contracts No. DE-AC03-76SF00515, No. DE-AC02-76ER01195, No. DE-AC03-81ER40050, No. DE-AC02-87ER40318, No. DE-AM03-76SF00034, and by the National Science Foundation.|
|Classification Code:||PACS: 13.25.+m, 14.40.Jz|
|Official Citation:||Observation of D_s^+ → K^0K^+ and D_s^+ → K^(*0)K^+ and an Upper Limit on D_s^+ → K^0π^+ J. Adler et al. pp. 1211-1214|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Ruth Sustaita|
|Deposited On:||31 May 2012 18:43|
|Last Modified:||26 Dec 2012 15:17|
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