MEASUREMENT OF THE CROSS-SECTION FOR GAMMA-GAMMA -] P(P)OVER-BAR

被引：47

作者：

ARTUSO, M

HE, D

GOLDBERG, M

HORWITZ, N

KENNETT, R

MONETI, GC

MULHEIM, F

MUKHIN, Y

PLAYFER, S

ROZEN, Y

STONE, S

THULASIDAS, M

VASSEUR, G

ZHU, G

BARTELT, J

CSORNA, SE

EGYED, Z

JAIN, V

SHELDON, P

AKERIB, DS

BARISH, B

CHADHA, M

CHAN, S

COWEN, DF

EIGEN, G

MILLER, JS

OGRADY, C

URHEIM, J

WEINSTEIN, AJ

ACOSTA, D

ATHANAS, M

MASEK, G

PAAR, H

SIVERTZ, M

BEAN, A

GRONBERG, J

KUTSCHKE, R

MENARY, S

MORRISON, RJ

NAKANISHI, S

NELSON, HN

NELSON, TK

RICHMAN, JD

RYD, A

TAJIMA, H

SCHMIDT, D

SPERKA, D

WITHERELL, MS

PROCARIO, M

YANG, S

机构：

[1] VANDERBILT UNIV,NASHVILLE,TN 37235

[2] CALTECH,PASADENA,CA 91125

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

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

[5] CARNEGIE MELLON UNIV,PITTSBURGH,PA 15213

[6] UNIV COLORADO,BOULDER,CO 80309

[7] CORNELL UNIV,ITHACA,NY 14853

[8] UNIV FLORIDA,GAINESVILLE,FL 32611

[9] HARVARD UNIV,CAMBRIDGE,MA 02138

[10] UNIV ILLINOIS,URBANA,IL 61801

[11] ITHACA COLL,ITHACA,NY 14850

[12] UNIV KANSAS,LAWRENCE,KS 66045

[13] UNIV MINNESOTA,MINNEAPOLIS,MN 55455

[14] SUNY ALBANY,ALBANY,NY 12222

[15] OHIO STATE UNIV,COLUMBUS,OH 43210

[16] UNIV OKLAHOMA,NORMAN,OK 73019

[17] PURDUE UNIV,W LAFAYETTE,IN 47907

[18] UNIV ROCHESTER,ROCHESTER,NY 14627

[19] SO METHODIST UNIV,DALLAS,TX 75275

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

[21] INP,NOVOSIBIRSK,RUSSIA

来源：

PHYSICAL REVIEW D | 1994年 / 50卷 / 09期

关键词：

D O I：

10.1103/PhysRevD.50.5484

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A measurement of the cross section for gamma gamma --> p ($) over bar p is performed at two-photon center-of-mass energies between 2.00 and 3.25 GeV. These results are obtained using e(+)e(-) --> e(+)e(-)p ($) over bar p events selected from 1.31 fb(-1) of data taken with the CLEO II detector. The measured cross section is in reasonable agreement with previous measurements and is in excellent agreement with recent calculations based on a diquark model. However, leading order QCD calculations performed using the Brodsky-Lepage formalism are well below the measured cross section.

引用

页码：5484 / 5490

页数：7

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