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

Authors

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 BALEST R CHO K DAOUDI M FORD WT JOHNSON DR LINGEL K LOHNER M RANKIN P SMITH JG ALEXANDER JP BEBEK C BERKELMAN K BESSON D BROWDER TE CASSEL DG CHO HA COFFMAN DM DRELL PS EHRLICH R GALIK RS GARCIASCIVERES M GEISER B GITTLEMAN B GRAY SW HARTILL DL HELTSLEY BK JONES CD JONES SL KANDASWAMY J KATAYAMA N KIM PC KREINICK DL LUDWIG GS MASUI J MEVISSEN J MISTRY NB NG CR NORDBERG E OGG M PATTERSON JR PETERSON D RILEY D SALMAN S SAPPER M WORDEN H WURTHWEIN F AVERY P FREYBERGER A RODRIGUEZ J STEPHENS R YELTON J CINABRO D HENDERSON S KINOSHITA K LIU T SAULNIER M SHEN F WILSON R YAMAMOTO H ONG B SELEN M SADOFF AJ AMMAR R BALL S BARINGER P COPPAGE D COPTY N DAVIS R HANCOCK N KELLY M KWAK N LAM H KUBOTA Y LATTERY M NELSON JK PATTON S PERTICONE D POLING R SAVINOV V SCHRENK S WANG R ALAM MS KIM IJ NEMATI B ONEILL JJ SEVERINI H SUN CR ZOELLER MM CRAWFORD G DAUBENMIER CM FULTON R FUJINO D GAN KK HONSCHEID K KAGAN H KASS R LEE J MALCHOW R MORROW F SKOVPEN Y SUNG M WHITE C WHITMORE J WILSON P BUTLER F FU X KALBFLEISCH G LAMBRECHT M ROSS WR SKUBIC P SNOW J WANG PL WOOD M BORTOLETTO D BROWN DN FAST J MCILWAIN RL MIAO T MILLER DH MODESITT M SCHAFFNER SF SHIBATA EI SHIPSEY IPJ WANG PN BATTLE M ERNST J KROHA H ROBERTS S SPARKS K THORNDIKE EH WANG CH DOMINICK J SANGHERA S SHELKOV V SKWARNICKI T STROYNOWSKI R VOLOBOUEV I ZADOROZHNY P

Citation

M. Artuso et al., MEASUREMENT OF THE CROSS-SECTION FOR GAMMA-GAMMA -] P(P)OVER-BAR, Physical review. D. Particles and fields, 50(9), 1994, pp. 5484-5490

Citations number

Categorie Soggetti

Physics, Particles & Fields

Journal title

Physical review. D. Particles and fields → ACNP

ISSN journal

05562821

Volume

Issue

Year of publication

1994

Pages

5484 - 5490

Database

ISI

SICI code

0556-2821(1994)50:9<5484:MOTCFG>2.0.ZU;2-W

Abstract

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 CLE O II detector. The measured cross section is in reasonable agreement w ith previous measurements and is in excellent agreement with recent ca lculations based on a diquark model. However, leading order QCD calcul ations performed using the Brodsky-Lepage formalism are well below the measured cross section.