MEASUREMENT OF THE LEFT-RIGHT FORWARD-BACKWARD ASYMMETRY FOR CHARM QUARKS WITH D-ASTERISK+ AND D+ MESONS

被引：8

作者：

ABE, K

ABT, I

AHN, CJ

AKAGI, T

ALLEN, NJ

ASH, WW

ASTON, D

BAIRD, KG

BALTAY, C

BAND, HR

BARAKAT, MB

BARANKO, G

BARDON, O

BARKLOW, T

BAZARKO, AO

BENDAVID, R

BENVENUTI, AC

BIENZ, T

BILEI, GM

BISELLO, D

BLAYLOCK, G

BOGART, JR

BOLTON, T

BOWER, GR

BRAU, JE

BREIDENBACH, M

BUGG, WM

BURKE, D

BURNETT, TH

BURROWS, PN

BUSZA, W

CALCATERRA, A

CALDWELL, DO

CALLOWAY, D

CAMANZI, B

CARPINELLI, M

CASSELL, R

CASTALDI, R

CASTRO, A

CAVALLISFORZA, M

CHURCH, E

COHN, HO

COLLER, JA

COOK, V

COTTON, R

COWAN, RF

COYNE, DG

DOLIVEIRA, A

DAMERELL, CJS

DAOUDI, M

机构：

[1] IST NAZL FIS NUCL,SEZ BOLOGNA,I-40126 BOLOGNA,ITALY

[2] BOSTON UNIV,BOSTON,MA 02215

[3] BRUNEL UNIV,UXBRIDGE UB8 3PH,MIDDX,ENGLAND

[4] CALTECH,PASADENA,CA 91125

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

[6] UNIV CALIF SANTA CRUZ,SANTA CRUZ,CA 95064

[7] UNIV CINCINNATI,CINCINNATI,OH 45221

[8] COLORADO STATE UNIV,FT COLLINS,CO 80523

[9] UNIV COLORADO,BOULDER,CO 80309

[10] COLUMBIA UNIV,NEW YORK,NY 10027

[11] IST NAZL FIS NUCL,SEZ FERRARA,I-44100 FERRARA,ITALY

[12] UNIV FERRARA,I-44100 FERRARA,ITALY

[13] IST NAZL FIS NUCL,LAB NAZL FRASCATI,I-00044 FRASCATI,ITALY

[14] UNIV ILLINOIS,URBANA,IL 61801

[15] UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720

[16] MIT,CAMBRIDGE,MA 02139

[17] UNIV MASSACHUSETTS,AMHERST,MA 01003

[18] UNIV MISSISSIPPI,UNIVERSITY,MS 38677

[19] NAGOYA UNIV,CHIKUSA KU,NAGOYA,AICHI 464,JAPAN

[20] UNIV OREGON,EUGENE,OR 97403

[21] IST NAZL FIS NUCL,SEZ PADOVA,I-35100 PADUA,ITALY

[22] UNIV PADUA,I-35100 PADUA,ITALY

[23] IST NAZL FIS NUCL,SEZ PERUGIA,I-06100 PERUGIA,ITALY

[24] UNIV PERUGIA,I-06100 PERUGIA,ITALY

[25] IST NAZL FIS NUCL,SEZ PISA,I-56100 PISA,ITALY

[26] UNIV PISA,I-56100 PISA,ITALY

[27] RUTGERS STATE UNIV,PISCATAWAY,NJ 08855

[28] RUTHERFORD APPLETON LAB,DIDCOT OX11 0QX,OXON,ENGLAND

[29] SOGANG UNIV,SEOUL,SOUTH KOREA

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

[31] UNIV TENNESSEE,KNOXVILLE,TN 37996

[32] TOHOKU UNIV,SENDAI,MIYAGI 980,JAPAN

[33] VANDERBILT UNIV,NASHVILLE,TN 37235

[34] UNIV WASHINGTON,SEATTLE,WA 98195

[35] UNIV WISCONSIN,MADISON,WI 53706

[36] YALE UNIV,NEW HAVEN,CT 06511

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.75.3609

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a direct measurement of A(c) = 2 upsilon(c)a(c)/(upsilon(c)(2) + a(c)(2)) from the left-right forward-backward asymmetry of D*(+) and D+ mesons in Z(0) events produced with the longitudinally polarized SLAG Linear Collider beam. These Z(0) --> <c(c)over bar> events are tagged on the basis of event kinematics and decay topology from a sample of hadronic Z(0) decays recorded by the SLAG Large Detector. We measure A(c)(0) = 0.73 +/- 0.22(stat) +/- 0.10(syst).

引用

页码：3609 / 3613

页数：5

共 32 条

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