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

页码：1507 / 1510

页数：4

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