PRODUCTION OF CHI(C2) MESONS IN PHOTON-PHOTON COLLISIONS AT LEP

Authors
ACKERSTAFF K ALEXANDER K ALLISON J ALTEKAMP N ANDERSON KJ ANDERSON S ARCELLI S ASAI S ASHBY SF AXEN D AZUELOS G BALL AH BARBERIO E BARILLARI T BARLOW RJ BARTOLDUS R BATLEY JR BAUMANN S BECHTLUFT J BEHNKE T BELL KW BELLA G BELLERIVE A BENTVELSEN S BETHKE S BETTS S BIEBEL O BIGUZZI A BIRD SD BLOBEL V BLOODWORTH IJ BOBINSKI M BOCK P BOHME J BOUTEMEUR M BRAIBANT S BRIGHTTHOMAS P BROWN RM BURCKHART HJ BURGARD C BURGIN R CAPILUPPI P CARNEGIE RK CARTER AA CARTER JR CHANG CY CHARLTON DG CHRISMAN D CIOCCA C CLARKE PEL CLAY E COHEN I CONBOY JE COOKE OC COUYOUMTZELIS C COXE RL CUFFIANI M DADO S DALLAVALLE GM DAVIS R DEJONG S DELPOZO LA DEROECK A DESCH K DIENES B DIXIT MS DUBBERT J DUCHOVNI E DUCKECK G DUERDOTH IP EATOUGH D ESTABROOKS PG ETZION E EVANS HG FABBRI HG FANFANI A FANTI M FAUST AA FIEDLER F FIERRO M FLECK I FOLMAN R FURTJES A FUTYAN DI GAGNON P GARY JW GASCON J GASCONSHOTKIN SM GAYCKEN G GEICHGIMBEL C GIACOMELLI G GIACOMELLI P GIBSON V GIBSON WR GINGRICH DM GLENZINSKI D GOLDBERG J GORN W GRANDI C GROSS E GRUNHAUS J GRUWE M HANSON GG HANSROUL M HAPKE M HARDER K HARGROVE CK HARTMANN C HAUSCHILD M HAWKES CM HAWKINGS R HEMINGWAY RJ HERNDON M HERTEN G HEUER RD HILDRETH MD HILL JC HILLIER SJ HOBSON PR HOCKER A HOMER RJ HONMA AK HORVATH D HOSSAIN KR HOWARD R HUNTEMEYER P IGOKEMENES P IMRIE DC ISHII K JACOB FR JAWAHERY A JEREMIE H JIMACK M JONES CR JOVANOVIC P JUNK TR KARLEN D KARTVELISHVILI V KAWAGOE K KAWAMOTO T KAYAL PI KEELER RK KELLOGG RG KENNEDY BW KLIER A KLUTH S KOBAYASHI T KOBEL M KOETKE DS KOKOTT TP KOLREP M KOMAMIYA S KOWALEWSKI RV KRESS T KRIEGER P VONKROGH J KUHL T KYBERD P LAFFERTY GD LANSKE D LAUBER J LAUTENSCHLAGER SR LAWSON I LAYTER JG LAZIC D LEE AM LELLOUCH D LETTS J LEVINSON L LIEBISCH R LIST B LITTLEWOOD C LLOYD AW LLOYD SL LOEBINGER FK LONG GD LOSTY MJ LUDWIG J LIU D MACCHIOLO A MACPHERSON A MADER W MANNELLI M MARCELLINI S MARKOPOULOS C MARTIN AJ MARTIN JP MARTINEZ G MASHIMO T MATTIG P MCDONALD WJ MCKENNA J MCKIGNEY EA MCMAHON TJ MCPHERSON RA MEIJERS F MENKE S MERRITT FS MES H MEYER J MICHELINI A MIHARA S MIKENBERG G MILLER DJ MIR R MOHR W MONTANARI A MORI T NAGAI K NAKAMURA I NEAL HA NELLEN B NISIUS R ONEALE SW OAKHAM FG ODORICI F OGREN HO OREGLIA MJ ORITO S PALINKAS J PASZTOR G PATER JR PATRICK GN PATT J PEREZOCHOA R PETZOLD S PFEIFENSCHNEIDER P PILCHER JE PINFOLD J PLANE DE POFFENBERGER P POLI B POLOK J PRZYBYCIEN M REMBSER C RICK H ROBERTSON S ROBINS SA RODNING N RONEY JM ROSCOE K ROSSI AM ROZEN Y RUNGE K RUNOLFSSON O RUST DR SACHS K SAEKI T SAHR O SANG WM SARKISYAN EKG SBARRA C SCHAILE AD SCHAILE O SCHARF F SCHARFFHANSEN P SCHIECK J SCHMITT B SCHMITT S SCHONING A SCHRODER M SCHUMACHER M SCHWICK C SCOTT WG SEUSTER R SHEARS TG SHEN BC SHEPHERDTHEMISTOCLEOUS CH SHERWOOD P SIROLI GP SITTLER A SKUJA A SMITH AM SNOW GA SOBIE R SOLDNERREMBOLD S SPROSTON M STAHL A STEPHENS K STEUERER J STOLL K STROM D STROHMER R SURROW B TALBOT SD TANAKA S TARAS P TAREM S TEUSCHER R THIERGEN M THOMSON MA VONTORNE E TORRENCE E TOWERS S TRIGGER I TROCSANYI Z TSUR E TURCOT AS TURNERWATSON MF VANKOOTEN R VANNEREM P VERZOCCHI M VOSS H WACKERLE F WAGNER A WARD CP WARD DR WATKINS PM WATSON AT WATSON NK WELLS PS WERMES N WHITE JS WILSON GW WILSON JA WYATT TR YAMASHITA S YEKUTIELI G ZACEK V ZERZION D
Citation
K. Ackerstaff et al., PRODUCTION OF CHI(C2) MESONS IN PHOTON-PHOTON COLLISIONS AT LEP, Physics letters. Section B, 439(1-2), 1998, pp. 197-208
Citations number
27
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
439
Issue
1-2
Year of publication
1998
Pages
197 - 208
Database
ISI
SICI code
0370-2693(1998)439:1-2<197:POCMIP>2.0.ZU;2-3
Abstract
We present an observation at LEP of the production of chi(c2) mesons i n the collisions of two quasi-real photons using the OPAL detector. Th e chi(c2) mesons are reconstructed in the decay channel chi(c2) --> J/ psi gamma --> l(+) l(-) gamma (with l = e, mu) using all data taken at e(+)e(-) centre-of-mass energies of 91 and 183 GeV, corresponding to integrated luminosities of 167 and 55 pb(-1) respectively. The two-pho ton width of the chi(c2) is determined to be Gamma(chi(c2) --> gamma g amma) = 1.76 +/- 0.47 +/- 0.37 +/- 0.15 keV, where the first error is statistical, the second is systematic and the third comes from branchi ng ratio uncertainties. (C) 1998 Elsevier Science B.V. All rights rese rved.