MEASUREMENT OF THE RATIO B(D0-]K]-E+VE)/B(D0-]K-E+VE)

被引：28

作者：

CRAWFORD, G

FULTON, R

GAN, KK

JENSEN, T

JOHNSON, DR

KAGAN, H

KASS, R

MALCHOW, R

MORROW, F

WHITMORE, J

WILSON, P

BORTOLETTO, D

BROWN, D

DOMINICK, J

MCILWAIN, RL

MILLER, DH

MODESITT, M

NG, CR

SCHAFFNER, SF

SHIBATA, EI

SHIPSEY, IPJ

BATTLE, M

KIM, P

KROHA, H

SPARKS, K

THORNDIKE, EH

WANG, CH

ALAM, MS

KIM, IJ

NEMATI, B

ROMERO, V

SUN, CR

WANG, PN

ZOELLER, MM

GOLDBERG, M

HAUPT, T

HORWITZ, N

JAIN, V

KENNETT, R

MESTAYER, MD

MONETI, GC

ROZEN, Y

RUBIN, P

SKWARNICKI, T

STONE, S

THUSALIDAS, M

YAO, WM

ZHU, G

BARNES, AV

BARTELT, J

机构：

[1] PURDUE UNIV,W LAFAYETTE,IN 47907

[2] UNIV ROCHESTER,ROCHESTER,NY 14627

[3] SUNY ALBANY,ALBANY,NY 12222

[4] VANDERBILT UNIV,NASHVILLE,TN 37235

[5] ITHACA COLL,ITHACA,NY 14850

[6] HARVARD UNIV,CAMBRIDGE,MA 02138

[7] UNIV FLORIDA,GAINESVILLE,FL 32611

[8] UNIV KANSAS,LAWRENCE,KS 66045

[9] SYRACUSE UNIV,SYRACUSE,NY 13244

来源：

PHYSICAL REVIEW D | 1991年 / 44卷 / 11期

关键词：

D O I：

10.1103/PhysRevD.44.3394

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using the CLEO detector at the Cornell Electron Storage Ring, we have performed a direct measurement of the ratio of D0 semileptonic branching fractions into vector and pseudoscalar final states. We find B(D0 --> K*-e+-nu(e))/B(D0 --> K-e+-nu(e)) = 0.51 +/- 0.18 +/- 0.06, in agreement with the ratio derived by the E691 experiment which compares D+ and D0 final states. We also set an upper limit on the ratio B(D0 --> K*0-pi--e+-nu(e)BAR)/B(D0 --> K*-e+-nu(e)) < 0.64 at 90% confidence level.

引用

页码：3394 / 3401

页数：8

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