Suppressed decays of Ds+ mesons to two pseudoscalar mesons

被引：11

作者：

Adams, G. S. ^{[1
]}

Anderson, M.

Cummings, J. P.

Danko, I.

Hu, D.

Moziak, B.

Napolitano, J.

He, Q.

Insler, J.

Muramatsu, H.

Park, C. S.

Thorndike, E. H.

Yang, F.

Artuso, M.

Blusk, S.

Khalil, S.

Li, J.

Menaa, N.

Mountain, R.

Nisar, S.

Randrianarivony, K.

Sia, R.

Skwarnicki, T.

Stone, S.

Wang, J. C.

Bonvicini, G.

Cinabro, D.

Dubrovin, M.

Lincoln, A.

Asner, D. M.

Edwards, K. W.

Naik, P.

Briere, R. A.

Ferguson, T.

Tatishvili, G.

Vogel, H.

Watkins, M. E.

Rosner, J. L.

Adam, N. E.

Alexander, J. P.

Cassel, D. G.

Duboscq, J. E.

Ehrlich, R.

Fields, L.

Gibbons, L.

Gray, R.

Gray, S. W.

Hartill, D. L.

Heltsley, B. K.

Hertz, D.

机构：

[1] Rensselaer Polytech Inst, Troy, NY 12180 USA

[2] Univ Rochester, Rochester, NY 14627 USA

[3] Syracuse Univ, Syracuse, NY 13244 USA

[4] Wayne State Univ, Detroit, MI 48202 USA

[5] Carleton Univ, Ottawa, ON K1S 5B6, Canada

[6] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA

[7] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA

[8] Cornell Univ, Ithaca, NY 14853 USA

[9] Univ Florida, Gainesville, FL 32611 USA

[10] George Mason Univ, Fairfax, VA 22030 USA

[11] Univ Illinois, Urbana, IL 61801 USA

[12] Indiana Univ, Bloomington, IN 47405 USA

[13] Univ Kansas, Lawrence, KS 66045 USA

[14] Luther Coll, Decorah, IA 52101 USA

[15] Univ Minnesota, Minneapolis, MN 55455 USA

[16] Northwestern Univ, Evanston, IL 60208 USA

[17] SUNY Albany, Albany, NY 12222 USA

[18] SUNY Buffalo, Buffalo, NY 14260 USA

[19] Univ Oklahoma, Norman, OK 73019 USA

[20] Univ Pittsburgh, Pittsburgh, PA 15260 USA

[21] Univ Puerto Rico, Mayaguez, PR 00681 USA

[22] Purdue Univ, W Lafayette, IN 47907 USA

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 99卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.99.191805

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

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