MEASUREMENT OF THEE REACTION GAMMA-ASTERISK-P-]PHI-P IN DEEP, INELASTIC E(+)P SCATTERING AT HERA

Authors
DERRICK M KRAKAUER D MAGILL S MIKUNAS D MUSGRAVE B OKRASINSKI JR REPOND J STANEK R TALAGA RL ZHANG H MATTINGLY MCK BARI G BASILE M BELLAGAMBA L BOSCHERINI D BRUNI A BRUNI G BRUNI P ROMEO GC CASTELLINI G CIFARELLI L CINDOLO F CONTIN A CORRADI M GIALAS I GIUSTI P IACOBUCCI G LAURENTI G LEVI G MARGOTTI A MASSAM T NANIA R PALMONARI F POLINI A SARTORELLI G GARCIA YZ ZICHICHI A AMELUNG C BORNHEIM A CRITTENDEN J DEFFNER R DOEKER T ECKERT K FELD L FREY A GEERTS M GROTHE M HARTMANN H HEINLOTH K HEINZ L HILGER E JAKOB HP KATZ UF MENGEL S PAUL E PFEIFFER M REMBSER C SCHRAMM D STAMM J WEDEMEYER R CAMPBELLROBSON S CASSIDY A COTTINGHAM WN DYCE N FOSTER B GEORGE S HAYES ME HEATH GP HEATH HF PICCIONI D ROFF DG TAPPER RJ YOSHIDA R ARNEODO M AYAD R CAPUA M GARFAGNINI A IANNOTTI L SCHIOPPA M SUSINNO G CALDWELL A CARTIGLIA N JING Z LIU W PARSONS JA RITZ S SCIULLI F STAUB PB WAI L YANG S 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 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 FLASINSKI M GILKINSON DJ GLASMAN C GOTTLICHER P GROSSEKNETTER J HAAS T HAIN W HASELL D HESSLING H IGA Y JOHNSON KF JOOS P KASEMANN M KLANNER R KOCH W KOTZ U KOWALSKI H LABS J LADAGE A LOHR B LOWE M LUKE D MAINUSCH J MANCZAK O MILEWSKI J MONTEIRO T NG JST NOTZ D OHRENBERG K PIOTRZKOWSKI K ROCO M ROHDE M ROLDAN J SCHNEEKLOTH U SCHULZ W SELONKE F SURROW B VOSS T WESTPHAL D WOLF G WOLLMER U YOUNGMAN C ZEUNER W GRABOSCH HJ KHARCHILAVA A MARI SM MEYER A SCHLENSTEDT S WULFF N BARBAGLI G GALLO E PELFER P MACCARRONE G DEPASQUALE S VOTANO L BAMBERGER A EISENHARDT S TREFZGER T WOLFLE S BROMLEY JT BROOK NH BUSSEY PJ DOYLE AT SAXON DH SINCLAIR LE UTLEY ML WILSON AS DANNEMANN A HOLM U HORSTMANN D SINKUS R WICK K BUROW BD HAGGE L LOHRMANN E PAVEL N POELZ G SCHOTT W ZETSCHE F BACON TC BRUMMER N BUTTERWORTH I HARRIS VL HOWELL G HUNG BHY LAMBERTI L LONG KR MILLER DB PRINIAS A SEDGBEER JK SIDERIS D WHITFIELD AF MALLIK U WANG MZ WANG SM WU JT CLOTH P FILGES D AN SH CHO GH KO BJ LEE SB NAM SW PARK HS PARK SK KARTIK S KIM HJ MCNEIL RR METCALF W NADENDLA VK 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 MATTHEWS CG PATEL PM RIVELINE M STAIRS DG STLAURENT M ULLMANN R ZACEK G TSURUGAI T BASHKIROV V DOLGOSHEIN BA STIFUTKIN A BASHINDZHAGYAN GL ERMOLOV PF GLADILIN LK GOLUBKOV YA KOBRIN VD KORZHAVINA IA KUZMIN VA LUKINA OY PROSKURYAKOV AS SAVIN AA SHCHEGLOVA LM SOLOMIN AN ZOTOV NP BOTJE M CHLEBANA F ENGELEN J DEKAMPS M KOOIJMAN P KRUSE A VANSIGHEM A TIECKE H VERKERKE W VOSSEBELD J VREESWIJK M WIGGERS L DEWOLF E VANWOUDENBERG R ACOSTA D BYLSMA B DURKIN LS GILMORE J LI C LING TY NYLANDER P PARK IH ROWANOWSKI TA BAILEY DS CASHMORE RJ COOPERSARKAR AM DEVENISH RCE HARNEW N LANCASTER M LINDEMANN L MCFALL JD NATH C NOYES VA QUADT A TICKNER JR UIJTERWAAL H WALCZAK R WATERS DS WILSON FF YIP T BERTOLIN A BRUGNERA R CARLIN R DALCORSO F DEGIORGI M DOSSELLI U LIMENTANI S MORANDIN M POSOCCO M STANCO L STROILI R VOCI C ZUIN F BULMAHN J FEILD RG OH BY WHITMORE JJ DAGOSTINI G MARINI G NIGRO A TASSI E HART JC MCCUBBIN NA SHAH TP BARBERIS E DUBBS T HEUSCH C VANHOOK M LOCKMAN W RAHN JT SADROZINSKI HFW SEIDEN A WILLIAMS DC BILTZINGER J SEIFERT RJ SCHWARZER O WALENTA AH ZECH G ABRAMOWICZ H BRISKIN G DAGAN S LEVY A FLECK JI INUZUKA M ISHII T KUZE M MINE S NAKAO M SUZUKI I TOKUSHUKU K UMEMORI K YAMADA S YAMAZAKI Y CHIBA M HAMATSU R HIROSE T HOMMA K KITAMURA S MATSUSHITA T YAMAUCHI K CIRIO R COSTA M FERRERO MI MASELLI S PERONI C SACCHI R SOLANO A STAIANO A DARDO M BAILEY DC BENARD F BRKIC M FAGERSTROEM CP HARTNER GF JOO 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 BOGUSZ W 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 COLDEWEY C EISENBERG Y HOCHMAN D KARSHON U REVEL D ZERZION D BADGETT WF BREITWEG J CHAPIN D CROSS R DASU S FOUDAS C LOVELESS RJ MATTINGLY S REEDER DD SILVERSTEIN S SMITH WH VAICIULIS A WODARCZYK M BHADRA S CARDY ML FRISKEN WR KHAKZAD M MURRAY WN SCHMIDKE WB
Citation
M. Derrick et al., MEASUREMENT OF THEE REACTION GAMMA-ASTERISK-P-]PHI-P IN DEEP, INELASTIC E(+)P SCATTERING AT HERA, Physics letters. Section B, 380(1-2), 1996, pp. 220-234
Citations number
52
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
380
Issue
1-2
Year of publication
1996
Pages
220 - 234
Database
ISI
SICI code
0370-2693(1996)380:1-2<220:MOTRGI>2.0.ZU;2-L
Abstract
The production of phi mesons in the reaction e(+)p --> e(+)phi p (phi --> K+K-), for 7 < Q(2) < 25 GeV2 and for virtual photon-proton centre of mass energies (W) in the range 42-134 GeV, has been studied with t he ZEUS detector at HERA. When compared to lower energy data at simila r Q(2), the results show that the gammap --> phi p cross section rise s strongly with W. This behaviour is similar to that previously found for the gammap --> rho(0)p cross section. This strong dependence cann ot be explained by production through soft pomeron exchange, It is, ho wever, consistent with perturbative QCD expectations, where it reflect s the rise of the gluon momentum density in the proton at small x. The ratio of sigma(phi)/sigma(rho(0)), which has previously been determin ed by ZEUS to be 0.065 +/- 0.013 (stat.) in photoproduction at a mean W of 70 GeV, is measured to be 0.18 +/- 0.05 (stat.) +/- 0.03 (syst.) at a mean Q(2) of 12.3 GeV2 and mean W of approximate to 100 GeV and i s thus approaching at large Q(2) the value of 2/9 predicted from the q uark charges of the vector mesons and a flavour independent production mechanism.