Direct measurements of absolute branching fractions for D0 and D+ inclusive semimuonic decays

• Published in: Physics letters. B Vol. 665; no. 1; pp. 16 - 19
• Main Authors: Bai, J.Z., Bai, Y., Chen, H.X., Chen, Y.B., Chu, Y.P., Fang, J., Fu, C.D., Gao, C.S., Gu, S.D., Gu, Y.T., Guo, Y.N., He, K.L., He, M., Heng, Y.K., Hou, J., Hu, H.M., Huang, Y.P., Ji, X.B., Jiang, X.S., Jiao, J.B., Jin, D.P., Li, H.B., Li, R.Y., Li, W.D., Li, W.G., Li, X.N., Li, X.Q., Liang, Y.F., Liao, H.B., Liu, B.J., Liu, C.X., Liu, Fang, Liu, Feng, Liu, H.H., Liu, H.M., Liu, J.B., Liu, J., Liu, R.G., Liu, Z.A., Lu, F., Lu, G.R., Lu, J.G., Luo, C.L., Ma, H.L., Ma, L.L., Malik, M.Q.A., Mao, Z.P., Mo, X.H., Qi, N.D., Qin, H., Qiu, J.F., Ruan, X.D., Shang, L., Shen, D.L., Sun, H.S., Sun, Z.J., Tang, X., Tian, J.P., Tong, G.L., Wang, L.L., Wang, L.S., Wang, P., Wang, P.L., Wang, Y.F., Wang, Z.Y., Wei, C.L., Wei, D.H., Xia, X.M., Xu, G.F., Xu, X.P., Xu, Y., Yan, M.L., Yang, M., Yang, Y.X., Ye, M.H., Ye, Y.X., Yu, C.X., Yu, G.W., Yuan, C.Z., Zang, S.L., Zeng, Y., Zhang, B.Y., Zhang, C.C., Zhang, H.Q., Zhang, H.Y., Zhang, J.Y., Zhang, X.Y., Zhang, Y.Y., Zhang, Z.X., Zhang, Z.P., Zhao, D.X., Zhao, J.W., Zhao, M.G., Zhao, P.P., Zheng, Z.P., Zhong, B., Zhu, Q.M., Zhu, Y.S., Zhu, Z.A., Zhu, Z.L.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 03.07.2008
• ISSN: 0370-2693; 1873-2445
• DOI: 10.1016/j.physletb.2008.05.054

By analyzing approximately 33 pb−1 of sample data collected at and around 3.773 GeV with the BES-II detector at the BEPC collider, we directly measured the branching fractions for the neutral and charged D inclusive semimuonic decays to be BF(D0→μ+X)=(6.8±1.5±0.8)% and BF(D+→μ+X)=(17.6±2.7±1.8)%, and determined the ratio of the two branching fractions to be BF(D+→μ+X)BF(D0→μ+X)=2.59±0.70±0.25.