COMPARISON OF ZEUS DATA WITH STANDARD MODEL PREDICTIONS FOR E(-]E(+)XSCATTERING AT HIGH-X AND HIGH-Q(2)()P)

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 SARTORELLI G GARCIA YZ ZICHICHI A AMELUNG C BORNHEIM A BROCK I COBOKEN K CRITTENDEN J DEFFNER R ECKERT M FELD L GROTHE M HARTMANN H HEINLOTH K HEINZ L HILGER E JAKOB HP KATZ UF PAUL E PFEIFFER M REMBSER C STAMM J WEDEMEYER R BAILEY DS CAMPBELLROBSON S COTTINGHAM WN FOSTER B HALLWILTON R HAYES ME HEATH GP HEATH HF 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 PARSONS JA RITZ S SAMPSON S SCIULLI F STRAUB PB ZHU Q BORZEMSKI P CHWASTOWSKI J ESKREYS A JAKUBOWSKI Z PRZYBYCIEN MB ZACHARA M ZAWIEJSKI L ADAMCZYK L BEDNAREK B JELEN K KISIELEWSKA D KOWALSKI T PRZYBYCIEO 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 GILKINSON DJ GLASMAN C GOTTLICHER P GROSSEKNETTER J HAAS T HAIN W HASELL D HESSLING H IGA Y JOHNSON KF KASEMANN M KOCH W KOTZ U KOWALSKI H LABS J LINDEMANN L LOHR B LOWE M MAINUSCH J MANCZAK O MILEWSKI J MONTEIRO T NG JST NOTZ D OHRENBERG K PARK JH PELLEGRINO A PELUCCHI F PIOTRKOWSKI K ROCO M ROHDE M ROLDAN J SAVIN AA SCHNEEKLOTH U SCHULZ W 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 SAXON DH SINCLAIR LE STRICKLAND E UTLEY ML WAUGH R WILSON AS BOHNET I GENDNER N HOLM U MEYERLARSEN A SALEHI H WICK K GLADILIN LK KLANNER R LOHRMANN E POELZ G SCHOTT W ZETSCHE F BACON TC BUTTERWORTH I COLE JE HARRIS VL HOWELL G HUNG BHY LAMBERTI L LONG KR MILLER DB PAVEL N PRINIAS A SEDGBEER JK SIDERIS D WHITFIELD AF MALLIK U WANG SM WU JT CLOTH P FILGES D AN SH LEE SB NAM SW PARK HS PARK SK BARREIRO F FERNANDEZ JP 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 LIM JN 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 KOBRIN VD KORZHAVINA LA KUZMIN VA LUKINA OY PROSKURYAKOV AS SHCHEGLOVA LM SOLOMIN AN ZOTOV NP BOKEL C BOTJE M BRUMMER N CHLEBANA F ENGELEN J DEKAMPS M KOOIJMAN P KRUSE A VANSIGHEM A TIECKE H VERKERKE W VOSSEBELD J VREESWIJK M WIGGERS L DEWOLF E ACOSTA D BYLSMA B DURKIN LS GILMORE J GINSBURG CH KIM CL LING TY NYLANDER P ROMANOWSKI TA BLAIKLEY HE CASHMORE RJ COOPERSARKAR AM DEVENISH RCE EDMONDS JK HARNEW N LANCASTER M MCFALL JD NATH C NOYES VA QUADT A TICKNER JR UIJTERWAAL H WALCZAK R WATERS DS YIP T BERTOLIN A BRUGNERA R CARLIN R DALCORSO F DOSSELLI U LIMENTANI S MORANDIN M POSOCCO M STANCO L STROILI R VOCI C BULMAHN J FEILD RG OH BY OKRASINSKI JR WHITMORE JJ MARINI G NIGRO A HART JC MCCUBBIN NA SHAH TP BARBERIS E DUBBS T HEUSCH C VANHOOK M LOCKMAN W RAHN JT SADROZINSKI HFW SEIDEN A WILLIAMS DC SCHWARZER O WALENTA AH ABRAMOWICZ H BRISKIN G DAGAN S DOEKER T KANANOV S LEVY A ABE T FLECK JI INUZUKA M ISHII T KUZE M NAGANO K NAKAO M SUZUKI I TOKUSHUKU K UMEMORI K YAMADA S YAMAZAKI Y HAMATSU R HIROSE T HOMMA K KITAMURA S MATSUSHITA T YAMAUCHI K CIRIO R COSTA M FERRERO MI MASELLI S MONACO V PERONI C PETRUCCI MC SACCHI R SOLANO A STAIANO A DARDO M BAILEY DC BRKIC M FAGERSTROEM CP HARTNER GF JOE KK LEVMAN GM MARTIN JF ORR RS POLENZ S SAMPSON CR SIMMONS D TEUSCHER RJ BUTTERWORTH JM CATTERALL CD JONES TW KAZIEWICZ PB LANE JB SAUNDERS RL SHULMAN J SUTTON MR LU B MO LW 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 REVEL D BADGETT WF CHAPIN D CROSS R DASU S FOUDAS C LOVELESS RJ MATTINGLY S REEDER DD SMITH WH VAICIULIS A WODARCZYK M BHADRA S FRISKEN WR KHAKZAD M SCHMIDKE WB
Citation
J. Breitweg et al., COMPARISON OF ZEUS DATA WITH STANDARD MODEL PREDICTIONS FOR E(-]E(+)XSCATTERING AT HIGH-X AND HIGH-Q(2)()P), Zeitschrift fur Physik. C, Particles and fields, 74(2), 1997, pp. 207-220
Citations number
46
Categorie Soggetti
Physics, Particles & Fields
Journal title
Zeitschrift fur Physik. C, Particles and fields → ACNP
ISSN journal
01709739
Volume
74
Issue
2
Year of publication
1997
Pages
207 - 220
Database
ISI
SICI code
0170-9739(1997)74:2<207:COZDWS>2.0.ZU;2-5
Abstract
Using the ZEUS detector at HERA, we have studied the reaction e(+)p -- > e(+)X for Q(2) > 5000 GeV2 with a 20.1 pb(-1) data sample collected during the years 1993 to 1996. For Q(2) below 15000 GeV2, the data are in good agreement with Standard Model expectations. For Q(2) > 35000 GeV2. two events are observed while 0.145 +/- 0.013 events are expecte d, A statistical analysis of a large ensemble of simulated Standard Mo del experiments indicates that with probability 6.0%, an excess at lea st as unlikely as that observed would occur above some Q(2) cut. For x > 0.55 and y > 0.75, four events are observed where 0.91 +/- 0.08 eve nts are expected, A statistical analysis of the two-dimensional distri bution of the events in x and y yields a probability of 0.72% for the region x > 0.55 and y > 0.25 and a probability of 7.8% for the entire Q(2) > 5000 GeV2 data sample. The observed excess above Standard Model expectations is particularly interesting because it occurs in a previ ously unexplored kinematic region.