MEASUREMENT OF JET SHAPES IN PHOTOPRODUCTION AT HERA

Authors
BREITWEG J DERRICK M KRAKAUER D MAGILL S MIKUNAS D MUSGRAVE B REPOND J STANEK R TALAGA RL YOSHIDA R ZHANG H MATTINGLY MCK ANSELMO F ANTONIOLI P BARI G BASILE M BELLAGAMBA L BOSCHERINI D BRUNI A BRUNI G ROMEO GC CASTELLINI G CIFARELLI L CINDOLO F CONTIN A CORRADI M DEPASQUALE S GIALAS I GIUSTI P IACOBUCCI G LAURENTI G LEVI G MARGOTTI A MASSAM T NANIA R PALMONARI F PESCI A POLINI A RICCI F SARTORELLI G GARCIA YZ ZICHICHI A AMELUNG C BORNHEIM A BROCK I COBOKEN K CRITTENDEN J DEFFNER R ECKERT M GROTHE M HARTMANN H HEINLOTH K HEINZ L HILGER E JAKOB HP KATZ UF KERGER R PAUL E PFEIFFER M REMBSER C STAMM J WEDEMEYER R WIEBER H BAILEY DS CAMPBELLROBSON S COTTINGHAM WN FOSTER B HALLWILTON R HAYES ME HEATH GP HEATH HF MCFALL JD PICCIONI D ROFF DG TAPPER RJ ARNEODO M AYAD R CAPUA M GARFAGNINI A IANNOTTI L SCHIOPPA M SUSINNO G KIM JY LEE JH LIM IT PAC MY CALDWELL A CARTIGLIA H JING Z LIU W MELLADO B PARSONS JA RITZ S SAMPSON S SCIULLI F STRAUB PB ZHU Q BORZEMSKI P CHWASTOWSKI J ESKREYS A FIGIEL J KLIMEK K PRZYBYCIEN MB ZAWIEJSKI L ADAMCZYK L BEDNAREK B BUKOWY M JELEN K KISIELEWSKA D KOWALSKI T PRZYBYCIEN M RULIKOWSKAZAREBSKA ER SUSZYCKI L ZAJAC J DULINSKI Z KOTANSKI A ABBIENDI G BAUERDICK LAT BEHRENS U BEIER H BIENLEIN JK CASES G DEPPE O DESLER K DREWS G FRICKE U GILKINSON DJ GLASMAN C GOTTLICHER P HAAS T HAIN W HASELL D JOHNSON KF KASEMANN M KOCH W KOTZ U KOWALSKI H LABS J LINDEMANN L LOHR B LOWE M MANCZAK O MILEWSKI J MONTEIRO T NG JST NOTZ D OHRENBERG K PARK IH PELLEGRINO A PELUCCHI F PIOTRZKOWSKI K ROCO M ROHDE M ROLDAN J RYAN JJ SAVIN AA SCHNEEKLOTH U SELONKE F SURROW B TASSI E VOSS T WESTPHAL D WOLF G WOLLMER U YOUNGMAN C ZARNECKI AF ZEUNER W BUROW BD GRABOSCH HJ MEYER A SCHLENSTEDT S BARBAGLI G GALLO E PELFER P MACCARRONE G VOTANO L BAMBERGER A EISENHARDT S MARKUN P TREFZGER T WOLFLE S BROMLEY JT BROOK NH BUSSEY PJ DOYLE AT MACDONALD N SAXON DH SINCLAIR LE STRICKLAND E WAUGH R BOHNET I GENDNER N HOLM U MEYERLARSEN A SALEHI H WICK K GLADILIN LK HORSTMANN D KCIRA D KLANNER R LOHRMANN E POELZ G SCHOTT W ZETSCHE F BACON TC BUTTERWORTH I COLE JE HOWELL G HUNG BHY LAMBERTI L LONG KR MILLER DB PAVEL N PRINIAS A SEDGBEER JK SIDERIS D MALLIK U WANG SM WU JT CLOTH P FILGES D FLECK JI ISHII T KUZE M SUZUKI I TOKUSHUKU K YAMADA S YAMAUCHI K YAMAZAKI Y HONG SJ LEE SB NAM SW PARK SK BARREIRO F FERNANDEZ JP GARCIA G GRACIANI R HERNANDEZ JM HERVAS L LABARGA L MARTINEZ M DELPESO J PUGA J TERRON J DETROCONIZ JF CORRIVEAU F HANNA DS HARTMANN J HUNG LW MURRAY WN OCHS A RIVELINE M STAIRS DG STLAURENT M ULLMANN R TSURUGAI T BASHKIROV V DOLGOSHEIN BA STIFUTKIN A BASHINDZHAGYAN GL ERMOLOV PF GOLUBKOV YA KHEIN LA KOROTKOVA NA KORZHAVINA IA KUZMIN VA LUKINA OY PROSKURYAKOV AS SHCHEGLOVA LM SOLOMIN AN ZOTKIN SA BOKEL C BOTJE M BRUMMER N CHLEBANA F ENGELEN J KOFFEMAN E KOOIJMAN P VANSIGHEM A TIECKE H TUNING N VERKERKE W VOSSEBELD J VREESWIJK M WIGGERS L DEWOLF E ACOSTA D BYLSMA B DURKIN LS GILMORE J GINSBURG CM KIM CL LING TY NYLANDER P ROMANOWSKI TA BLAIKLEY HE CASHMORE RJ COOPERSARKAR AM DEVENISH RCE EDMONDS JK GROSSEKNETTER J HARNEW N NATH C NOYES VA QUADT A RUSKE O TICKNER JR UIJTERWAAL H WALCZAK R WATERS DS BERTOLIN A BRUGNERA R CARLIN R DALCORSO F DOSSELLI U LIMENTANI S MORANDIN M POSOCCO M STANCO L STROILI R VOCI C BULMAHN J OH BY OKRASINSKI JR TOOTHACKER WS WHITMORE JJ IGA Y DAGOSTINI G MARINI G NIGRO A RASO M HART JC MCCUBBIN NA SHAH TP EPPERSON D HEUSCH C RAHN JT SADROZINSKI HFW SEIDEN A WICHMANN R WILLIAMS DC SCHWARZER O WALENTA AH ABRAMOWICZ H BRISKIN G DAGAN S KANANOV S LEVY A ABE T FUSAYASU T INUZUKA H NAGANO K UMEMORI K YAMASHITA T HAMATSU R HIROSE T HOMMA K KITAMURA S MATSUSHITA T CIRIO R COSTA M FERRERO MI MASELLI S MONACO V PERONI C PETRUCCI MC RUSPA M SACCHI R SOLANO A STAIANO A DARDO M BAILEY DC FAGERSTROEM CP GALEA R HARTNER GF JOO KK LEVMAN GM MARTIN JF ORR RS POLENZ S SABETFAKHRI A SIMMONS D TEUSCHER RJ BUTTERWORTH JH CATTERALL CD JONES TW LANE JB SAUNDERS RL SUTTON MR WING M CIBOROWSKI J GRZELAK G KASPRZAK M MUCHOROWSKI K NOWAK RJ PAWLAK JM PAWLAK R TYMIENIECKA T WROBLEWSKI AK ZAKRZEWSKI JA ADAMUS H COLDEWEY C EISENBERG Y HOCHMAN D KARSHON U BADGETT WF CHAPIN D CROSS R DASU S FOUDAS C LOVELESS RJ MATTINGLY S REEDER DD SMITH WH VAICIULIS A WODARCZYK H BHADRA S FRISKEN WR KHAKZAD M SCHMIDKE WB
Citation
J. Breitweg et al., MEASUREMENT OF JET SHAPES IN PHOTOPRODUCTION AT HERA, EUROPEAN PHYSICAL JOURNAL C-PARTICLES AND FIELDS, 2(1), 1998, pp. 61-75
Citations number
50
Categorie Soggetti
Physics, Particles & Fields
Journal title
EUROPEAN PHYSICAL JOURNAL C-PARTICLES AND FIELDS → ACNP
ISSN journal
14346044
Volume
2
Issue
1
Year of publication
1998
Pages
61 - 75
Database
ISI
SICI code
1434-6044(1998)2:1<61:MOJSIP>2.0.ZU;2-R
Abstract
The shape of jets produced in quasi-real photon-proton collisions at c entre-of-mass energies in the range 134-277 GeV has been measured usin g the hadronic energy flow. The measurement was done with the ZEUS det ector at HERA. Jets are identified using a cone algorithm in the eta - phi plane with a cone radius of one unit. Measured jet shapes both in inclusive jet and dijet production with transverse energies E-T(jet) > 14 GeV are presented. The jet shape broadens as the jet pseudorapidi ty (eta(jet)) increases and narrows as E-T(jet) increases. In dijet ph otoproduction, the jet shapes have been measured separately for sample s dominated by resolved and by direct processes, Leading-logarithm par ton-shower Monte Carlo calculations of resolved and direct processes d escribe well the measured jet shapes except for the inclusive producti on of jets with high eta(jet) and low E-T(jet). The observed broadenin g of the jet shape as eta(jet) increases is consistent with the predic ted increase in the fraction of final state gluon jets.