A MEASUREMENT OF THE CABIBBO-SUPPRESSED DECAYS D(0)-]PI-PI+ AND D(0)-]K-K+

被引：17

作者：

FRABETTI, PL

CHEUNG, HWK

CUMALAT, JP

DALLAPICCOLA, C

GINKEL, JF

GREENE, SV

JOHNS, WE

NEHRING, MS

BUTLER, JN

CIHANGIR, S

GAINES, I

GARBINCIUS, PH

GARREN, L

GOURLAY, SA

HARDING, DJ

KASPER, P

KREYMER, A

LEBRUN, P

SHUKLA, S

VITTONE, M

BIANCO, S

FABBRI, FL

SARWAR, S

ZALLO, A

CULBERTSON, R

GARDNER, RW

GREENE, R

WISS, J

ALIMONTI, G

BELLINI, G

CACCIANIGA, B

CINQUINI, L

DICORATO, M

GIAMMARCHI, M

INZANI, P

LEVERARO, F

MALVEZZI, S

MENASCE, D

MERONI, E

MORONI, L

PEDRINI, D

PERASSO, L

SALA, A

SALA, S

TORRETTA, D

BUCHHOLZ, D

CLAES, D

GOBBI, B

OREILLY, B

BISHOP, JM

机构：

[1] INFN,I-40126 BOLOGNA,ITALY

[2] UNIV COLORADO,BOULDER,CO 80309

[3] FERMILAB NATL ACCELERATOR LAB,BATAVIA,IL 60510

[4] INFN,LAB NAZL FRASCATI,I-00044 FRASCATI,ITALY

[5] UNIV ILLINOIS,URBANA,IL 61801

[6] UNIV MILAN,DIP FIS,I-20133 MILAN,ITALY

[7] INFN,I-20133 MILAN,ITALY

[8] NORTHWESTERN UNIV,EVANSTON,IL 60208

[9] UNIV NOTRE DAME,NOTRE DAME,IN 46556

[10] DIP FIS NUCL & TEOR,I-27100 PAVIA,ITALY

[11] INFN,I-27100 PAVIA,ITALY

[12] UNIV PUERTO RICO,MAYAGUEZ,PR 00708

[13] UNIV CALIF DAVIS,DAVIS,CA 95616

[14] UNIV S CAROLINA,COLUMBIA,SC 29208

[15] UNIV N CAROLINA,ASHEVILLE,NC 28804

[16] VANDERBILT UNIV,NASHVILLE,TN 37235

[17] NO KENTUCKY UNIV,HIGHLAND HTS,KY 41076

[18] UNIV TENNESSEE,KNOXVILLE,TN 37996

[19] KOREA UNIV,SEOUL 136701,SOUTH KOREA

来源：

PHYSICS LETTERS B | 1994年 / 321卷 / 03期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0370-2693(94)90479-0

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report a measurement of the relative branching ratio of two Cabibbo-suppressed decay modes: D0 --> pi-pi+ and D0 --> K-K+ . The data were accumulated in the 1990-1991 fixed target run of Fermilab high energy photoproduction experiment E687. The branching ratios of these modes relative to the Cabibbo-allowed decay DO --> K-pi+ are also presented. The relative branching ratios are measured to be GAMMA(D0 --> KK)/GAMMA(D0 --> pipi) = 2.53 +/- 0.46 +/- 0.19, GAMMA(D0 --> KK)/GAMMA (D0 --> Kpi) = 0.109 +/- 0.007 +/- 0.009, and GAMMA(D0 --> pipi)/GAMMA (D0 --> Kpi) = 0.043 +/- 0.007 +/- 0.003.

引用

页码：295 / 302

页数：8

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