Measurement of the form factors for (B)over-bar(0)->D*(+)l(-)(nu)over-bar

被引：89

作者：

Duboscq, JE

Fulton, R

Fujino, D

Gan, KK

Honscheid, K

Kagan, H

Kass, R

Lee, J

Sung, M

White, C

Wanke, R

Wolf, A

Zoeller, MM

Fu, X

Nemati, B

Richichi, SJ

Ross, WR

Skubic, P

Wood, M

Bishai, M

Fast, J

Gerndt, E

Hinson, JW

Miao, T

Miller, DH

Modesitt, M

Shibata, EI

Shipsey, IPJ

Wang, PN

Gibbons, L

Johnson, SD

Kwon, Y

Roberts, S

Thorndike, EH

Jessop, CP

Lingel, K

Marsiske, H

Perl, ML

Schaffner, SF

Wang, R

Coan, TE

Dominick, J

Fadeyev, V

Korolkov, I

Lambrecht, M

Sanghera, S

Shelkov, V

Stroynowski, R

Volobouev, I

Wei, G

机构：

[1] UNIV OKLAHOMA,NORMAN,OK 73019

[2] PURDUE UNIV,W LAFAYETTE,IN 47907

[3] UNIV ROCHESTER,ROCHESTER,NY 14627

[4] STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94309

[5] SO METHODIST UNIV,DALLAS,TX 75275

[6] SYRACUSE UNIV,SYRACUSE,NY 13244

[7] VANDERBILT UNIV,NASHVILLE,TN 37235

[8] VIRGINIA POLYTECH INST & STATE UNIV,BLACKSBURG,VA 24061

[9] CALTECH,PASADENA,CA 91125

[10] UNIV CALIF SAN DIEGO,LA JOLLA,CA 92093

[11] UNIV CALIF SANTA BARBARA,SANTA BARBARA,CA 93106

[12] UNIV COLORADO,BOULDER,CO 80309

[13] CORNELL UNIV,ITHACA,NY 14853

[14] UNIV FLORIDA,GAINESVILLE,FL 32611

[15] HARVARD UNIV,CAMBRIDGE,MA 02138

[16] UNIV HAWAII,HONOLULU,HI 96822

[17] UNIV ILLINOIS,CHAMPAIGN,IL 61801

[18] CARLETON UNIV,OTTAWA,ON K1S 5B6,CANADA

[19] MCGILL UNIV,MONTREAL,PQ H3A 2T8,CANADA

[20] INST PARTICLE PHYS,MONTREAL,PQ,CANADA

[21] ITHACA COLL,ITHACA,NY 14850

[22] UNIV KANSAS,LAWRENCE,KS 66045

[23] UNIV MINNESOTA,MINNEAPOLIS,MN 55455

[24] SUNY ALBANY,ALBANY,NY 12222

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 76卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.76.3898

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using a sample of 2.6 x 10(6) Upsilon(4S) --> B (B) over bar events collected with the CLE (O) over right arrow II detector at the Cornell Electron Storage Ring, we have measured the form factors for (B) over bar(0) --> D*(+)l(-)<(nu)over bar>. We perform a three-parameter fit with the joint distribution of four kinematic variables to obtain the form-factor ratios R(1) = 1.18 +/- 0.30 +/- 0.12 and R(2) = 0.71 +/- 0.22 +/- 0.07, and the form-factor slope rho(A1)(2) = 0.91 +/- 0.15 +/- 0.06, which is closely related to the slope of the Isgur-Wise function. The form-factor ratios are consistent with predicted corrections to the heavy-quark symmetry limit R(1) = R(2) = 1.

引用

页码：3898 / 3902

页数：5

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