EVENT SHAPE-ANALYSIS OF DEEP-INELASTIC SCATTERING EVENTS WITH A LARGERAPIDITY GAP 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 N 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 E 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 WALKER R 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 M 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 JM CATTERALL CD JONES TW LANE SB 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 M 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 M DESHPANDE A DHAWAN S HUGHES VW BHADRA S FRISKEN WR KHAKZAD M SCHMIDKE WB
Citation
J. Breitweg et al., EVENT SHAPE-ANALYSIS OF DEEP-INELASTIC SCATTERING EVENTS WITH A LARGERAPIDITY GAP AT HERA, Physics letters. Section B, 421(1-4), 1998, pp. 368-384
Citations number
66
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
421
Issue
1-4
Year of publication
1998
Pages
368 - 384
Database
ISI
SICI code
0370-2693(1998)421:1-4<368:ESODSE>2.0.ZU;2-I
Abstract
A global event shape analysis of the multihadronic final states observ ed in neutral current deep inelastic scattering events with a large ra pidity gap with respect to the proton direction is presented. The anal ysis is performed in the range 5 less than or equal to Q(2) less than or equal to 185 GeV2 and 160 less than or equal to W less than or equa l to 250 GeV, where Q(2) is the virtuality of the photon and W is the virtual-photon proton centre of mass energy. Particular emphasis is pl aced on the dependence of the shape variables, measured in the gamma- pomeron rest frame, on the mass of the hadronic final state, M-X. With increasing M-X the multihadronic final state becomes more collimated and planar. The experimental results are compared with several models which attempt to describe diffractive events. The broadening effects e xhibited by the data require in these models a significant gluon compo nent of the pomeron. (C) 1998 Elsevier Science B.V.