MEASUREMENT OF THE DECAYS D0-]PI-PI+ AND D0-]K-K+

被引：16

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

SPALDING, WJ

STREETMAN, ME

STUNDZIA, AB

WITHERELL, MS

机构：

[1] CARLETON UNIV,OTTAWA K1S 5B6,ONTARIO,CANADA

[2] CTR BRASILEIRO PESQUISAS FIS,BR-20000 RIO DE JANEIRO,BRAZIL

[3] UNIV CINCINNATI,CINCINNATI,OH 45221

[4] UNIV COLORADO,BOULDER,CO 80309

[5] FERMI NATL ACCELERATOR LAB,BATAVIA,IL 60510

[6] NATL RES COUNCIL CANADA,OTTAWA K1A 0R6,ONTARIO,CANADA

[7] PRINCETON UNIV,PRINCETON,NJ 08544

[8] UNIV SAO PAULO,SAO PAULO,BRAZIL

[9] UNIV TORONTO,TORONTO M5S 1A7,ONTARIO,CANADA

[10] YALE UNIV,NEW HAVEN,CT 06511

[11] UNIV MISSISSIPPI,OXFORD,MS 38677

来源：

PHYSICAL REVIEW D | 1991年 / 44卷 / 11期

关键词：

D O I：

10.1103/PhysRevD.44.R3371

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using data from Fermilab photoproduction experiment E691, we measure the ratio of branching fractions between the Cabibbo-suppressed modes B(D0 --> K-K+)/B(D0 --> pi--pi+) to be 1.95 +/- 0.34 +/- 0.22. We also report branching fractions for the modes D0 --> K-K+ and D0 --> pi--pi+ relative to the Cabibbo-allowed decay D0 --> K--pi+. Furthermore, we place an upper limit of 0.45 at the 90% C.L. on the CP-violating asymmetry in D0 --> K-K+ vs D0BAR --> K-K+ decays.

引用

页码：R3371 / R3374

页数：4

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