Published in:

Physical Review Letters 99,19 (2007)


Using data collected near the Ds*+Ds- peak production energy E-cm=4170 MeV by the CLEO-c detector, we study the decays of D-s(+) mesons to two pseudoscalar mesons. We report on searches for the singly Cabibbo-suppressed D-s(+) decay modes K+eta, K+eta('), pi K-+(S)0, K+pi(0), and the isospin-forbidden decay mode D-s(+)->pi(+)pi(0). We normalize with respect to the Cabibbo-favored D-s(+) modes pi(+)eta, pi(+)eta('), and (K+KS0), and obtain ratios of branching fractions: B(D-s(+)-> K+eta)/B(D-s(+)->pi(+)eta)=(8.9 +/- 1.5 +/- 0.4)%, B(D-s(+)-> K+eta('))/B(D-s(+)->pi(+)eta('))=(4.2 +/- 1.3 +/- 0.3)%, B(D-s(+)->pi K-+(S)0)/B(D-s(+)->(K+KS0))=(8.2 +/- 0.9 +/- 0.2)%, B(D-s(+)-> K+pi(0))/B(D-s(+)->(K+KS0))=(5.5 +/- 1.3 +/- 0.7)%, and B(D-s(+)->pi(+)pi(0))/B(D-s(+)->(K+KS0))< 4.1% at 90% C.L., where the uncertainties are statistical and systematic, respectively.


Physics, Multidisciplinary

Date of this Version

January 2007



To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.