MEASUREMENT OF 2-PHOTON PRODUCTION OF THE CHI(C2)

Authors
DOMINICK J SANGHERA S SHELKOV V SKWARNICKI T STROYNOWSKI R VOLOBOUEV I ZADOROZHNY P ARTUSO M HE D GOLDBERG M HORWITZ N KENNETT 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 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 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 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 DAUBENMEIR M 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 SCHFFNER SF SHIBATA EI SHIPSEY IPJ WANG PN BATTLE M ERNST J KROHA H ROBERTS S SPARKS K THORNDIKE EH WANG CH
Citation
J. Dominick et al., MEASUREMENT OF 2-PHOTON PRODUCTION OF THE CHI(C2), Physical review. D. Particles and fields, 50(7), 1994, pp. 4265-4271
Citations number
13
Categorie Soggetti
Physics, Particles & Fields
Journal title
Physical review. D. Particles and fields → ACNP
ISSN journal
05562821
Volume
50
Issue
7
Year of publication
1994
Pages
4265 - 4271
Database
ISI
SICI code
0556-2821(1994)50:7<4265:MO2POT>2.0.ZU;2-P
Abstract
The CLEO II detector is used to search for the production of chi(c2) s tates in two-photon interactions. We use the signature chi(c2) --> gam ma J/psi --> gamma l+l- with l = e, mu. Using 1.49 fb-1 of data taken with beam energies near 5.29 GeV, the two-photon width of the chi(c2) is determined to be GAMMA(chi(c2) --> gammagamma) = 1.08 +/- 0.30(stat ) +/- 0.26(syst) keV, in agreement with predictions from perturbative QCD.