2-PHOTON PRODUCTION OF CHARGED PION AND KAON PAIRS

Publication Type

Journal Article

Publication Date

9-1994

Abstract

A measurement of the cross section for the combined two-photon production of charged pion and kaon pairs is performed using 1.2 fb(-1) of data collected by the CLEO II detector at the Cornell Electron Storage Ring. The cross section is measured at invariant masses of the two-photon system between 1.5 and 5.0 GeV/c(2), and at scattering angles more than 53 degrees away from the gamma gamma collision axis in the gamma gamma center-of-mass frame. The large background of leptonic events is suppressed by utilizing the CsI calorimeter in conjunction with the muon chamber system. The reported cross section is compared with leading order QCD models as well as previous experiments. Although the functional dependence of the measured cross section disagrees with leading order and CD at small values of the two-photon invariant mass, the data show qualitatively a transition to perturbative behavior at an invariant mass of approximately 2.5 GeV/c(2).

Discipline

Physics

Publication

Physical Review D, Particles and fields

Volume

50

Issue

5

First Page

3027

Last Page

3037

ISSN

0556-2821

Identifier

10.1103/PhysRevD.50.3027

Publisher

American Physical Society

Comments

Complete Author List DOMINICK J, LAMBRECHT M, SANGHERA S, SHELKOV V, SKWARNICKI T, STROYNOWSKI R, VOLOBOUEV I, WEI G, ZADOROZHNY P, ARTUSO M, GOLDBERG M, HE D, HORWITZ N, KENNETT R, MOUNTAIN R, MONETI GC, MUHEIM F, MUKHIN Y, PLAYFER S, ROZEN Y, STONE S, THULASIDAS M, VASSEUR G, ZHU G, BARTELT J, CSORNA SE, EGYED Z, JAIN V, KINOSHITA K, EDWARDS KW, OGG H, BRITTON DI, HYATT ERF, MACFARLANE DB, PATEL PM, 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 HP, SIVERTZ M, GRONBERG J, KUTSCHKE R, MENARY S, MORRISON RJ, NAKANISHI S, NELSON HN, NELSON TK, QIAO C, RICHMAN JD, RYD A, TAJIMA H, SPERKA D, WITHERELL MS, PROCARIO M, BALEST R, CHO K, DAOUDI M, FORD WT, JOHNSON DR, LINGEL K, LOHNER M, RANKIN P, SMITH JG, ALEXANDER JP, BEBEK C, BERKELMAN K, BLOOM K, BROWDER TE, CASSEL DG, CHO HA, COFFMAN DM, DRELL PS, EHRLICH R, GAIDEREV P, GALIK RS, GARCIASCIVERES M, GEISER B, GITTELMAN 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, PATTERSON JR, PETERSON D, RILEY D, SALMAN S, SAPPER M, WURTHWEIN F, AVERY P, FREYBERGER A, RODRIGUEZ J, STEPHENS R, YANG S, YELTON J, CINABRO D, HENDERSON S, LIU T, SAULNIER M, WILSON R, YAMAMOTO H, BERGFELD T, EISENSTEIN BI, GOLLIN G, ONG B, PALMER M, SELEN M, THALER JJ, SADOFF AJ, AMMAR R, BALL S, BARINGER P, BEAN A, BESSON D, 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, SKOVPEN Y, SUNG M, WHITE C, BUTLER F, FU X, KALBFLEISCH G, ROSS WR, SKUBIC P, SNOW J, WANG PL, WOOD M, BROWN DN, FAST J, MCILWAIN RL, MIAO T, MILLER DH, MODESITT M, PAYNE D, SHIBATA EI, SHIPSEY IPJ, WANG PN, BATTLE M, ERNST J, KWON Y, ROBERTS S, THORNDIKE EH, WANG CH

Additional URL

http://doi.org/10.1103/PhysRevD.50.3027

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