MEASUREMENT OF INCLUSIVE D-ASTERISK(+ -) AND ASSOCIATED DIJET CROSS-SECTIONS IN PHOTOPRODUCTION AT HERA/

Authors
BREITWEG J DERRICK M KRAKAUER D MAGILL S MIKUNAS D MUSGRAVE B REPOND J STANEK I TALAGA RL YOSHIDA I 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 COPPOLA N CORRADI M DEPASQUALE S 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 FROCK I COBOKEN K CRITTENDEN J DEFFNER I ECKERT M GROTHE M HARTMANN H HEINLOTH K HEINZ L HILGER E JAKOB HP KAPPES A KATZ UF KERGER R PAUL E PFEIFFER M SCHNURBUSCH H WIEBER H BAILEY DS CAMPBELLROBSON S COTTINGHAM WN FOSTER B HALLWILTON R HEATH GP HEATH HF MCFALL JD PICCIONI D ROFF DG TAPPER RJ CAPUA M IANNOTTI L MASTROBERARDINO A SCHIOPPA M SUSINNO G KIM JY LEE JH 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 CZERMAK AM 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 DESLER K DREWS G FRICKE U GIALAS I GOEBEL F GOTTLICHER P GRACIANI R HAAS T HAIN W HARTNER GF HASELL D HEBBEL K JOHNSON KF KASEMANN M KOCH W KOTZ U KOWALSKI H LINDEMANN L LOHR B MARTINEZ M MILEWSKI J MILITE M MONTEIRO T NOTZ D PELLEGRINO A PELUCCHI F PIOTRZKOWSKI K ROHDE M ROLDAN J RYAN JJ SAULL PRB SAVIN AA SCHNEEKLOTH U SCHWARZER O SELONKE F STONJEK S SURROW B TASSI E WESTPHAL D WOLF G WOLLMER U YOUNGMAN C ZEUNER W BUROW BD COLDEWEY C GRABOSCH HJ MEYER A SCHLENSTEDT S BARBAGLI C GALLO E PELFER P MACCARRONE G VOTANO L BAMBERGER A EISENHARDT S MARKUN P RAACH H TREFZGER T WOLFLE S BROMLEY JT BROOK NH BUSSEY PJ DOYLE AT LEE SW MACDONALD N MCCANCE GJ SAXON DH SINCLAIR LE SKILLICORN IO STRICKLAND E WAUGH R BOHNET I GENDNER N HOLM U MEYERLARSEN A SALEHI N WICK K GARFAGNINI A GLADILIN LK KCIRA D KLANNER R LOHRMANN E POELZ G ZETSCHE F BACON TC BUTTERWORTH I COLE JE HOWELL G 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 LIM H PARK IH SON D BARREIRO F FERNANDEZ JP GARCIA G GLASMAN C HERNANDEZ JM HERVAS L LABARGA L DELPESO J PUGA J TERRON J DETROCONIZ JF CORRIVEAU F HANNA DS HARTMANN J MURRAY WN OCHS A RIVELINE M STAIRS DG STLAURENT M 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 ENGELEN J KOFFEMAN E KOOIJMAN P VANSIGHEM A TIECKE H TUNING N VERKERKE W VOSSEBELD J 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 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 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 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 NISHIMURA T ARNEODO M 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 JOE KK LEVMAN GM MARTIN JF ORR RS POLENZ S SABETFAKHRI A SIMMONS D BUTTERWORTH JM CATTERALL CD HAYES ME HEAPHY EA JONES TW LANE JB SAUNDERS RL SUTTON MR WING M CIBOROWSKI J GRZELAK G NOWAK RJ PAWLAK JM PAWLAK R SMALSKA B TYMIENIECKA T WROBLEWSKI AK ZAKRZEWSKI JA ZARNECKI AF ADAMUS M DEPPE O 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., MEASUREMENT OF INCLUSIVE D-ASTERISK(+ -) AND ASSOCIATED DIJET CROSS-SECTIONS IN PHOTOPRODUCTION AT HERA/, The European Physical Journal. C: Particles and Fields, 6(1), 1999, pp. 67-83
Citations number
57
Categorie Soggetti
Physics, Particles & Fields
Journal title
The European Physical Journal. C: Particles and Fields → ACNP
ISSN journal
14346044
Volume
6
Issue
1
Year of publication
1999
Pages
67 - 83
Database
ISI
SICI code
1434-6044(1999)6:1<67:MOID-A>2.0.ZU;2-5
Abstract
Inclusive photoproduction of D(+/-) mesons has been measured for phot on-proton centre-of-mass energies in the range 130 < W < 280GeV and ph oton virtuality Q(2) < 1 GeV2. The data sample used corresponds to an integrated luminosity of 37 pb(-1). Total and differential cross secti ons as functions of the D transverse momentum and pseudorapidity are presented in restricted kinematical regions and the data are compared with next-to-leading order (NLO) perturbative QCD calculations using t he ''massive charm'' and ''massless charm'' schemes. The measured cros s sections are generally above the NLO calculations, in particular in the forward (proton) direction. The large data sample also allows the study of dijet production associated with charm. A significant resolve d as well as a direct photon component contribute to the cross section . Leading order QCD Monte Carlo calculations indicate that the resolve d contribution arises from a significant charm component in the photon . A massive charm NLO parton level calculation yields lower cross sect ions compared to the measured results in a kinematic region where the resolved photon contribution is significant.