학술논문
Measurement of the absolute branching fraction of D-vertical bar -> (K)over-bar(0)e(vertical bar) nu(e) via (K)over-bar(0) -> pi(0)pi(0)
Document Type
article
Author
Ablikim, M; Achasov, N; Ai, XC; Albayrak, O; Albrecht, M; Ambrose, DJ; Amoroso, A; An, FF; An, Q; Bai, JZ; Ferroli, R Baldini; Ban, Y; Bennett, DW; Bennett, JV; Bertani, M; Bettonin, D; Bian, JM; Bianchi, F; Boger, E; Boyko, I; Briere, RA; Cai, H; Cai, X; Cakir, O; Caleaterra, A; Cao, GF; Cetin, SA; Chang, JF; Chelkov, G; Chen, G; Chen, HS; Chen, HY; Chen, JC; Chen, ML; Chen, S; Chen, SJ; Chen, X; Chen, XR; Chen, YB; Cheng, HP; Chu, XK; Cibinetto, G; Dai, HL; Dai, JP; Dbeyssi, A; Dedovich, D; Deng, ZY; Denig, A; Denysenko, I; Destefanis, M; De Mori, F; Ding, Y; Dong, C; Dong, J; Dong, LY; Dong, MY; Dou, ZL; Du, SX; Duan, PF; Fan, JZ; Fang, J; Fang, SS; Fang, X; Fang, Y; Farinelli, R; Fava, L; Fedorov, O; Feldbauer, F; Felici, G; Feng, CQ; Fioravanti, E; Fritsch, M; Fu, CD; Gao, Q; Gao, XL; Gao, XY; Gao, Y; Gao, Z; Garzia, I; Goetzen, K; Gong, L; Gong, WX; Gradl, W; Greco, M; Gu, MH; Gu, YT; Guan, YH; Guo, AQ; Guo, LB; Guo, RP; Guo, Y; Guo, YP; Haddadi, Z; Hafner, A; Han, S; Hao, XQ; Harris, FA; He, KL; Held, T; Heng, YK
Source
CHINESE PHYSICS C. 40(11)
Subject
Language
Abstract
By analyzing 2.93 fb$^{-1}$ data collected at the center-of-mass energy$\sqrt s=3.773$ GeV with the BESIII detector, we measure the absolute branchingfraction of the semileptonic decay $D^+\rightarrow\bar K^0 e^{+}\nu_{e}$ to be${\mathcal B}(D^{+}\rightarrow\bar K^0 e^{+}\nu_{e})=(8.59 \pm 0.14 \pm0.21)\%$ using $\bar K^0\to K^0_S\to \pi^0\pi^0$, where the first uncertaintyis statistical and the second systematic. Our result is consistent withprevious measurements within uncertainties.