2-PHOTON PRODUCTION OF CHARGED PION AND KAON PAIRS

Authors
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
Citation
J. Dominick et al., 2-PHOTON PRODUCTION OF CHARGED PION AND KAON PAIRS, Physical review. D. Particles and fields, 50(5), 1994, pp. 3027-3037
Citations number
23
Categorie Soggetti
Physics, Particles & Fields
Journal title
Physical review. D. Particles and fields → ACNP
ISSN journal
05562821
Volume
50
Issue
5
Year of publication
1994
Pages
3027 - 3037
Database
ISI
SICI code
0556-2821(1994)50:5<3027:2POCPA>2.0.ZU;2-P
Abstract
A measurement of the cross section for the combined two-photon product ion of charged pion and kaon pairs is performed using 1.2 fb(-1) of da ta collected by the CLEO II detector at the Cornell Electron Storage R ing. The cross section is measured at invariant masses of the two-phot on 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 m uon chamber system. The reported cross section is compared with leadin g order QCD models as well as previous experiments. Although the funct ional dependence of the measured cross section disagrees with leading order and CD at small values of the two-photon invariant mass, the dat a show qualitatively a transition to perturbative behavior at an invar iant mass of approximately 2.5 GeV/c(2).