SEMI-LEPTONIC DECAYS ON THE D MESON

被引：131

作者：

BACINO, W

FERGUSON, T

NODULMAN, L

SLATER, W

TICHO, H

DIAMANTBERGER, A

DONALDSON, G

DURO, M

HALL, A

IRWIN, G

KIRKBY, J

MERRITT, F

WOJCICKI, S

BURNS, R

CONDON, P

COWELL, P

KIRZ, J

机构：

[1] STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94305

[2] STANFORD UNIV,DEPT PHYS,STANFORD,CA 94305

[3] SUNY STONY BROOK,DEPT PHYS,STONY BROOK,NY 11794

[4] UNIV CALIF IRVINE,DEPT PHYS,IRVINE,CA 92664

来源：

PHYSICAL REVIEW LETTERS | 1979年 / 43卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.43.1073

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The electron energy spectrum in the process e+e-(3770)e+(>2 charged particles) has been used to determine the D(56% D0+44% D+) semileptonic branching ratio. Assuming the Glashow-Iliopoulos-Maiani model, it is found that the inclusive branching ratio is b(DXe)=0.0800.015 and the state X is dominated by K and K. The fraction of Ke is (37 16)% if the K system is entirely K*(890), or (55 21)% if the K system is nonresonant. Within the assumptions of the analysis, the D lifetime is calculated to be (2.5 1.6) × 10-13 sec. © 1979 The American Physical Society.

引用

页码：1073 / 1076

页数：4

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