Bai, JZ; Bardon, O; Blum, I; Breakstone, A; Burnett, T; Chen, GP; Chen, HF; Chen, J; Chen, SJ; Chen, SM; Chen, Y; Chen, YB; Chen, YQ; Cheng, BS; Cowan, RF; Cui, HC; Cui, XZ; Ding, HL; Du, ZZ; Dunwoodie, W; Fan, XL; Fang, J; Fero, M; Gao, CS; Gao, ML; Gao, SQ; Gao, WX; Gratton, P; Gu, JH; Gu, SD; Gu, WX; Gu, YF; Guo, YN; Han, SW; Han, Y; Harris, FA; Hatanaka, M; He, J; He, KR; He, M; Hitlin, DG; Hu, GY; Hu, HB; Hu, T; Hu, XQ; Huang, DQ; Huang, YZ; Izen, JM; Jia, QP; Jiang, CH; Jin, Y; Jones, L; Kang, SH; Kelsey, MH; Kim, BK; Lai, YF; Lan, HB; Lang, PF; Lankford, A; Li, F; Li, J; Li, PQ; Li, Q; Li, RB; Li, W; Li, WD; Li, WG; Li, X; Li, XN; Lin, SZ; Liu, HM; Liu, JH; Liu, Q; Liu, RG; Liu, Y; Liu, ZA; Lou, XC; Lowery, B; Lu, JG; M., A; C., E; M., J; Mao, HS; Mao, ZP; Malchow, R

doi:10.1103/physrevlett.74.4599

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Direct Measurement of the Pseudoscalar Decay Constant, fDs

1995

Bai, JZ;
Bardon, O;
Blum, I;
Breakstone, A;
Burnett, T;
Chen, GP;
Chen, HF;
Chen, J;
Chen, SJ;
Chen, SM;
Chen, Y;
Chen, YB;
Chen, YQ;
Cheng, BS;
Cowan, RF;
Cui, HC;
Cui, XZ;
Ding, HL;
Du, ZZ;
Dunwoodie, W;
Fan, XL;
Fang, J;
Fero, M;
Gao, CS;
Gao, ML;
Gao, SQ;
Gao, WX;
Gratton, P;
Gu, JH;
Gu, SD;
Gu, WX;
Gu, YF;
Guo, YN;
Han, SW;
Han, Y;
Harris, FA;
Hatanaka, M;
He, J;
He, KR;
He, M;
Hitlin, DG;
Hu, GY;
Hu, HB;
Hu, T;
Hu, XQ;
Huang, DQ;
Huang, YZ;
Izen, JM;
Jia, QP;
Jiang, CH;
Jin, Y;
Jones, L;
Kang, SH;
Kelsey, MH;
Kim, BK;
Lai, YF;
Lan, HB;
Lang, PF;
Lankford, A;
Li, F;
Li, J;
Li, PQ;
Li, Q;
Li, RB;
Li, W;
Li, WD;
Li, WG;
Li, X;
Li, XN;
Lin, SZ;
Liu, HM;
Liu, JH;
Liu, Q;
Liu, RG;
Liu, Y;
Liu, ZA;
Lou, XC;
Lowery, B;
Lu, JG;
M., A;
C., E;
M., J;
Mao, HS;
Mao, ZP;
Malchow, R;
Mandelkern, M;
Meng, XC;
Ni, HL;
Nie, J;
Olsen, SL;
Oyang, J;
Paluselli, D;
Pan, LJ;
Panetta, J;
Porter, F;
Prabhakar, E;
Qi, ND;
Que, YK;
Quigley, J;
Rong, G;
Schernau, M;
Schmid, B;
Schultz, J;
Shao, YY;
Shen, DL;
Shen, H;
Shen, XY;
Sheng, HY;
Shi, HZ;
Shi, XR;
Smith, A;
Soderstrom, E;
Song, XF;
Standifird, J;
Stoker, D;
Sun, F;
Sun, HS;
Sun, SJ;
Synodinos, J;
Tan, YP;
Tang, SQ;
Toki, W;
Tong, GL;
Torrence, E;
Wang, F;
Wang, LS;
Wang, LZ;
Wang, M;
Wang, P;
Wang, PL;
Wang, SM;
Wang, TJ;
Wang, W;
Wang, YY;
Whittaker, S;
Wilson, R;
Wisniewski, WJ;
Xi, DM;
Xia, XM;
Xie, PP;
Xu, DZ;
Xu, RS;
Xu, ZQ;
Xue, ST;
Yamamoto, R;
Yan, J;
Yan, WG;
Yang, CM;
Yang, CY;
Yang, W;
Yao, HB;
Ye, MH;
Ye, SZ;
Yu, CS;
Yu, CX;
Yu, ZQ;
Yuan, CZ;
Zhang, BY;
Zhang, CC;
Zhang, DH;
Zhang, HL;
Zhang, J;
Zhang, JW;
Zhang, LS;
Zhang, SQ;
Zhang, Y;
Zhang, YY;
Zhao, DX;
Zhao, JW;
Zhao, M;
Zhao, PD;
Zhao, WR;
Zhao, WX;
Zheng, JP;
Zheng, LS;
Zheng, ZP;
Zhou, GP;
Zhou, HS;
Zhou, Li;
Zhou, XF;
Zhou, YH;
Zhu, QM;
Zhu, YC;
Zhu, YS;
Zhuang, BA;
Zioulas, G
et al.

Published Web Location

https://doi.org/10.1103/physrevlett.74.4599

Creative Commons 'BY' version 4.0 license

Abstract

The Beijing Spectrometer (BES) experiment has observed purely leptonic decays of the Ds meson in the reaction e+e-→Ds+Ds- at a c.m. energy of 4.03 GeV. Three events are observed in which one Ds decays hadronically to φπ, K̄*0K, or K̄0K, and the other decays leptonically to μνμ or τντ. With the assumption of μ-τ universality, values of the branching fraction, B(Ds→μνμ)=(1.5-0.6-0.2+1.3+0.3)%, and the Ds pseudoscalar decay constant, fDs=(4.3-1.3-0.4+1.5+0.4)×102 MeV, are obtained. © 1995 The American Physical Society.

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Direct Measurement of the Pseudoscalar Decay Constant, fDs

Published Web Location