OBSERVATION OF DIRECT PROCESSES IN PHOTOPRODUCTION AT HERA

Authors
DERRICK M KRAKAUER D MAGILL S MUSGRAVE B REPOND J REPOND S STANEK R TALAGA RL THRON J ARZARELLO F AYAD R BARI G BASILE M BELLAGAMBA L BOSCHERINI D BRUNI A BRUNI G BRUNI P ROMEO GC CASTELLINI G CHIARINI M CIFARELLI L CINDOLO F CIRALLI F CONTIN A DELPAPA C DAURIA S FRASCONI F GIUSTI P IACOBUCCI G LAURENTI G LEVI G LIN Q MACCARRONE G MARGOTTI A MASSAM T NANIA R NEMOZ C PALMONARI F SARTORELLI G TIMELLINI R GARCIA YZ ZICHICHI A BARGENDE A CRITTENDEN J DESCH K DIEKMANN B DOEKER T FELD L FREY A GEERTS M GEITZ G HARTMANN H HAUN D HEINLOTH K HILGER E JAKOB HP KATZ UF KRAMARCZYK S KUCKES M MASS A MENGEL S MOLLEN J MUSCH H PAUL E SCHATTEVOY R SCHNEIDER JL SCHRAMM D WEDEMEYER R CASSIDY A CUSSANS DG DYCE N FOSTER B GEORGE S GILMORE R HEATH GP HEATH HF LANCASTER M LLEWELLYN TJ MORGADO CJS OMARA JA TAPPER RJ WILSON SS YOSHIDA R RAU RR ARNEODO M SCHIOPPA M SUSINNO G BERNSTEIN A CALDWELL A GIALAS I PARSONS JA RITZ S SCIULLI F STRAUB PB WAI L YANG S BORZEMSKI P CHWASTOWSKI J ESKREYS A PIOTRZKOWSKI K ZACHARA M ZAWIEJSKI L ADAMCZYK L BEDNAREK B ESKREYS K JELEN K KISIELEWSKA D KOWALSKI T RULIKOWSKAZAREBSKA E SUSZYCKI L ZAJAC J KEDZIERSKI T KOTANSKI A PRZYBYCIEN M BAUERDICK LAT BEHRENS U BIENLEIN JK BOTTCHER S COLDEWEY C DREWS G FLASINSKI M FLECK I GILKINSON DJ GOTTLICHER P GUTJAHR B HAAS T HAGGE L HAIN W HASELL D HESSLING H HULTSCHIG H JOOS P KASEMANN M KLANNER R KOCH W KOPKE L KOTZ U KOWALSKI H KROGER W KRUGER J LABS J LADAGE A LOHR B LOWE M LUKE D MAINUSCH J MANCZAK O MOMAYEZI M NG JST NICKEL S NOTZ D POSNECKER KU ROHDE M ROLDAN J SCHNEEKLOTH U SCHROEDER J SCHULZ W SELONKE F STILIARIS E TSURUGAI T VOGEL W WESTPHAL D WOLF G YOUNGMAN C GRABOSCH HJ LEICH A MEYER A RETHFELDT C SCHLENSTEDT S BARBAGLI G NUTI M PELFER P ANZIVINO G DEPASQUALE S QIAN S VOTANO L BAMBERGER A FREIDHOF A POSER T SOLDNERREMBOLD S THEISEN G TREFZGER T BROOK NH BUSSEY PJ DOYLE AT FORBES JR JAMIESON VA RAINE C SAXON DH STAVRIANAKOU M WILSON AS BRUCKMANN H DANNEMANN A HOLM U HORSTMANN D KAMMERLOCHER H KREBS B NEUMANN T SINKUS R WICK K FURTJES A LOHRMANN E MILEWSKI J NAKAHATA M PAVEL N POELZ G SCHOTT W TERRON J ZETSCHE F BACON TC BEUSELINCK R BUTTERWORTH I GALLO E HARRIS VL LONG KR MILLER DB PRINIAS A SEDGBEER JK VORVOLAKOS A WHITFIELD A BIENZ T KREUTZMANN H MALLIK U MCCLIMENT E ROCO M WANG MZ CLOTH P FILGES D AN SH HONG SM KIM CO KIM TY NAM SW PARK SK SUH MH YON SH IMLAY R KARTIK S KIM HJ MCNEIL RR METCALF W NADENDLA VK BARREIRO F CASES G HERVAS L LABARGA L DELPESO J DETROCONIZ JF IKRAIAM F MAYER JK SMITH GR CORRIVEAU F HANNA DS HARTMANN J HUNG LW LIM JN MATTHEWS CG MITCHELL JW PATEL PM SINCLAIR LE STAIRS DG STLAURENT M ULLMANN R BASHINDZHAGYAN GL ERMOLOV PF GLADILIN LK GOLUBKOV YA KUZMIN VA KUZNETSOV EN SAVIN AA VORONIN AG ZOTOV NP BENTVELSEN S BOTJE M DAKE A ENGELEN J DEJONG P DEKAMPS M KOOIJMAN P KRUSE A VANDERLUGT H ODELL V TENNER A TIECKE H UIJTERWAAL H VREESWIJK M WIGGERS L DEWOLF E VANWOUDENBERG R BYLSMA B DURKIN LS HONSCHEID K LI C LING TY MCLEAN KW MURRAY WN PARK IH ROMANOWSKI TA SEIDLEIN R BAILEY D BLAIR GA BYRNE A CASHMORE RJ COOPERSARKAR AM DEVENISH RCE HARNEW N KHATRI T LUFFMAN P MORAWITZ P NASH J ROOCROFT NC WALCZAK R WILSON FF YIP T ABBIENDI G BERTOLIN A BRUGNERA R CARLIN R DALCORSO F DEGIORGI M DOSSELLI U GASPARINI F LIMENTANI S MORANDIN M POSOCCO M STANCO L STROILI R VOCI C BULMAHN J BUTTERWORTH JM FEILD RG OH BY WHITMORE JJ CONTINO U DAGOSTINI G GUIDA M IORI M MARI SM MARINI G MATTIOLI M NIGRO A HART JC MCCUBBIN NA PRYTZ K SHAH TP SHORT TL BARBERIS E CARTIGLIA N HEUSCH C VANHOOK M HUBBARD B LOCKMAN W SADROZINSKI HFW SEIDEN A ZERZION D BADURA E BILTZINGER J SEIFERT RJ WALENTA AH ZECH G DAGAN S LEVY A HASEGAWA T HAZUMI M ISHII T KASAI S KUZE M MINE S NAGASAWA Y NAGIRA T NAKAO M OKUNO H SUZUKI I TOKUSHUKU K YAMADA S YAMAZAKI Y CHIBA M HAMATSU R HIROSE T HOMMA K KITAMURA S NAGAYAMA S NAKAMITSU Y CIRIO R COSTA M FERRERO MI LAMBERTI L MASELLI S PERONI C SOLANO A SACCHI R STAIANO A DARDO M BAILEY DC BANDYOPADHYAY D BENARD F BHADRA S BRKIC M BUROW BD CHLEBANA FS CROMBIE MB GINGRICH DM HARTNER GF LEVMAN GM MARTIN JF ORR RS SAMPSON CR TEUSCHER RJ BULLOCK FW CATTERALL CD GIDDINGS JC JONES TW KHAN AM LANE JB MAKKAR PL SHAW D SHULMAN J BLANKENSHIP K KOCHOCKI J LU B MO LW CHARCHULA K CIBOROWSKI J GAJEWSKI J GRZELAK G KASPRZAK M KRZYZANOWSKI M MUCHOROWSKI K NOWAK RJ PAWLAK JM TYMIENIECKA T WROBLEWSKI AK ZAKRZEWSKI JA ZARNECKI AF ADAMUS M ABRAMOWICZ H EISENBERG Y GLASMAN C KARSHON U MONTAG A REVEL D SHAPIRA A FOUDAS C FORDHAM C LOVELESS RJ GOUSSIOU A ALI I BEHRENS B DASU S REEDER DD SMITH WH SILVERSTEIN S FRISKEN WR FURUTANI KM IGA Y
Citation
M. Derrick et al., OBSERVATION OF DIRECT PROCESSES IN PHOTOPRODUCTION AT HERA, Physics letters. Section B, 322(3), 1994, pp. 287-300
Citations number
40
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
322
Issue
3
Year of publication
1994
Pages
287 - 300
Database
ISI
SICI code
0370-2693(1994)322:3<287:OODPIP>2.0.ZU;2-8
Abstract
Jets in photoproduction events have been studied with the ZEUS detecto r for gammap centre-of-mass energies ranging from 130 to 2 50 GeV. The inclusive jet distributions give evidence for the dominance of resolv ed photon interactions. In the di-jet sample the direct processes are for the first time clearly isolated. Di-jet cross sections for the res olved and direct processes are given in a restricted kinematic range.