STUDY OF THE DECAY D+-]KBAR0E+VE

被引：25
|
作者：
ANJOS, JC
APPEL, JA
BEAN, A
BRACKER, SB
BROWDER, TE
CREMALDI, LM
DUBOSCQ, JE
ELLIOTT, JR
ESCOBAR, CO
GIBNEY, MC
HARTNER, GF
KARCHIN, PE
KUMAR, BR
LOSTY, MJ
LUSTE, GJ
MANTSCH, PM
MARTIN, JF
MCHUGH, S
MENARY, SR
MORRISON, RJ
NASH, T
PINFOLD, J
PUNKAR, G
PUROHIT, MV
ROSS, WR
SANTORO, AFS
SCHMIDT, DM
SHOUP, AL
SLIWA, K
SOKOLOFF, MD
SOUZA, MHG
SPERKA, D
SPALDING, WJ
STREETMAN, ME
STUNDZIA, AB
WITHERELL, MS
机构：
[1] UNIV CALIF SANTA BARBARA,SANTA BARBARA,CA 93106
[2] CARLETON UNIV,OTTAWA K1S 5B6,ONTARIO,CANADA
[3] UNIV CINCINNATI,CINCINNATI,OH 45221
[4] UNIV COLORADO,BOULDER,CO 80309
[5] FERMI NATL ACCELERATOR LAB,BATAVIA,IL 60510
[6] YALE UNIV,NEW HAVEN,CT 06511
[7] NATL RES COUNCIL CANADA,OTTAWA K1A 0R6,ONTARIO,CANADA
[8] PRINCETON UNIV,PRINCETON,NJ 08544
[9] UNIV SAO PAULO,SAO PAULO,BRAZIL
[10] UNIV MISSISSIPPI,OXFORD,MS 38677
[11] UNIV TORONTO,TORONTO M5S 1A7,ONTARIO,CANADA
来源：
PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 12期
关键词：
D O I：
10.1103/PhysRevLett.67.1507
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We have studied the exclusive semileptonic decay mode D+ --> K0BAR e + v(e) in the Fermilab photoproduction experiment E691. We find the ratio B(D+ --> K0BAR e + v(e))/B(D+ --> K- pi+ pi+) to be 0.66 +/- 0.09 +/- 0.14, corresponding to a D+ --> K0BAR e + v(e) branching ratio of (6.1 +/- 0.9 +/- 1.6)%. Combining this result with our measurement of the D+ lifetime, we find GAMMA(D+ --> K0BAR e + v(e)) = (5.6 +/- 0.8 +/- 1.5) x 10(10) s-1. We also find, using E691 averages, the ratio of decay rates GAMMA(D --> K* ev)/GAMMA(D --> Kev) to be 0.55 +/- 0.14.
引用
收藏
页码：1507 / 1510
页数：4
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