Direct Measurement Of B(D-Omicron ->Phi Chi(Omicron)) And B(D+->Phi Chi(+))

Jz Bai, Y Ban,Jg Bian, I Blum,Gp Chen,Hf Chen,J Chen,Jc Chen,Y Chen,Yb Chen,Yq Chen,Bs Cheng,Xz Cui,Hl Ding,Ly Dong,Zz Du,W Dunwoodie,Cs Gao,Ml Gao,Sq Gao,P Gratton,Jh Gu,Sd Gu,Wx Gu,Yf Gu,Yn Guo,Zj Guo,Sw Han, Y Han,Fa Harris,J He,Jt He,Kl He, M He,Yk Heng,Dg Hitlin,Gy Hu,Hm Hu,Jl Hu,Qh Hu, T Hu,Xq Hu,Yz Huang,Gs Huang,Jm Izen,Ch Jiang, Y Jin, Bd Jones,X Ju,Zj Ke,Mh Kelsey,Bk Kim,D Kong,Yf Lai,Pf Lang,A Lankford,Cg Li,D Li,Hb Li,J Li,Jc Li,Pq Li,Rb Li, W Li,Wg Li,Xh Li,Xn Li,Hm Liu, J Liu,Rg Liu, Y Liu,Xc Lou,B Lowery, F Lu,Jg Lu,Xl Luo,Ec Ma,Jm Ma,R Malchow, M Mandelkern,Hs Mao,Zp Mao,Xc Meng, J Nie,Sl Olsen,J Oyang,D Paluselli,Lj Pan,J Panetta, F Porter,Nd Qi, Xr Qi,Cd Qian,Jf Qiu, Yh Qu,Yk Que,G Rong, M Schernau, B Schmid, J Schultz,Yy Shao,Bw Shen,Dl Shen, H Shen,Xy Shen,Hy Sheng,Hz Shi,Xf Song, J Standifird, D Stoker,F Sun,Hs Sun,Y Sun,Yz Sun,Sq Tang,W Toki,Gl Tong,Gs Varner,F Wang,Ls Wang,Lz Wang,M Wan,P Wang,Pl Wang,Sm Wang,Tj Wang,Yy Wang,M Weaver,Cl Wei,N Wu,Yg Wu,Dm Xi,Xm Xia,Pp Xie,Y Xie,Yh Xie,Gf Xu,St Xue,J Yan,Wg Yan,Cm Yang,Cy Yang,Hx Yang,J Yang,W Yang,Xf Yang,Mh Ye,Sw Ye,Yx Ye,Cs Yu,Cx Yu,Gw Yu,Yh Yu,Zq Yu,Cz Yuan, Y Yuan,By Zhang,C Zhang,Cc Zhang,Dh Zhang,Hl Zhang,J Zhang,Jw Zhang,L Zhang,Ls Zhang,P Zhang,Qj Zhang,Sq Zhang,Xy Zhang,Yy Zhang,Dx Zhao,Hw Zhao,Jw Zhao,M Zhao,Wr Zhao,Zg Zhao,Jp Zheng, Ls Zheng,Zp Zheng,Bq Zhou,Gp Zhou,Hs Zhou, L Zhou,Kj Zhu,Qm Zhu,Yc Zhu,Ys Zhu,Ba Zhuang

PHYSICAL REVIEW D（2000）

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摘要

The first measurement of B(D-0 --> phi X-0) and an upper limit for B(D+ --> phi X+) are determined from 22.3 pb(-1) of e(+)e(-) annihilation data at a c.m. energy of 4.03 GeV. The data were recorded by the Beijing Spectrometer (BES) at BEPC. A recoil charge method is applied to charm threshold data to determine the charge of the D meson in the recoil from 9054+/-309+/-416 reconstructed D-0, D+ mesons. The branching fractions B(D0 --> phi X-0) = (1.71(-0.71)(+0.76) +/- 0.17)%, and B(D+ --> phi X+) < 1.8% are determined from 10 events with a reconstructed D and a recoiling phi. In addition, a 90% C.L. upper limit of B(D+ --> phi e(+)X(0)) < 1.6% is determined from a search for semileptonic decays of the D+.

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