MEASUREMENT OF THE DIFFRACTIVE CROSS-SECTION IN DEEP-INELASTIC SCATTERING

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 BELLAGAMBA L BOSCHERINI D BRUNI A 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 DOEKER T ECKERT M FELD L FREY A GEERTS M GROTHE M HARTMANN H HEINLOTH K HEINZ L HILGER E JAKOB HP KATZ UF MENGEL S MOLLEN J 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 STRAUB PB WAI L YANG S ZHU Q BORZEMSKI P CHWASTOWSKI J ESKREYS A ZACHARA M ZAWIEJSKI L ADAMCZYK L BEDNAREK B JELEN K KISIELEWSKA D KOWALSKI T PRZYBYCIEN M RULIKOWSKAZAREBSKA E SUSZYCKI L ZAJAC K KOTANSKI A BAUERDICK LAT BEHRENS U BEIER H BIENLEIN JK 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 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 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 LOHRAMANN E MILEWSKI J 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 CASES G 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 ROMANOWSKI 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 ABBIENDI G 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 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 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 FAGERSTROEM CP FRISKEN WR KHAKZAD M MURRAY WN SCHMIDKE WB
Citation
M. Derrick et al., MEASUREMENT OF THE DIFFRACTIVE CROSS-SECTION IN DEEP-INELASTIC SCATTERING, Zeitschrift fur Physik. C, Particles and fields, 70(3), 1996, pp. 391-412
Citations number
69
Categorie Soggetti
Physics, Particles & Fields
Journal title
Zeitschrift fur Physik. C, Particles and fields → ACNP
ISSN journal
01709739
Volume
70
Issue
3
Year of publication
1996
Pages
391 - 412
Database
ISI
SICI code
0170-9739(1996)70:3<391:MOTDCI>2.0.ZU;2-Z
Abstract
Diffractive scattering of gammap --> X + N, where N is either a proto n or a nucleonic system with M(N) < 4 GeV has been measured in deep in elastic scattering (DIS) at HERA. The cross section was determined by a novel method as a function of the gammap c.m, energy W between 60 a nd 245 GeV and of the mass M(X) of the system X up to 15 GeV at averag e Q(2) values of 14 and 31 GeV2. The diffractive cross section d sigma (diff)/dM(X) is, within errors, found to rise linearly with W. Paramet erizing the W dependence by the form d sigma(diff)/dM(X) proportional to (W-2)((2<(alpha?(IP))over bar>-2)) the DIS data yield for the pomer on trajectory <(alpha(IP))over bar> = 1.23 +/- 0.02(stat) +/- 0.04(sys t) averaged over t in the measured kinematic range assuming the longit udinal photon contribution to be zero. This value for the pomeron traj ectory is substantially larger than <(alpha(IP))over bar> extracted fr om soft interactions. The value of <alpha(IP))over bar> measured in th is analysis suggests that a substantial part of the diffractive DIS cr oss section originates from processes which can be described by pertur bative QCD. From the measured diffractive cross sections the diffracti ve structure function of the proton F-2(D(3))(beta,Q(2),x(IP)) has bee n deterz mined, where beta is the momentum fraction of the struck quar k in the pomeron. The form F-2(D(3)) = constant .(1/x(IP))(a) gives a good fit to the data in all beta and Q(2) intervals with a = 1.46 +/- 0.04(stat) +/- 0.08(syst).