STUDY OF D-ASTERISK(2010)(+ -)-PRODUCTION IN EP-COLLISIONS AT HERA/

Authors
DERRICK M KRAKAUER D MAGILL S MIKUNAS D MUSGRAVE B REPOND J STANEK R TALAGA RL ZHANG H AYAD R BARI G BASILE M BELLAGAMBA L BOSCHERINI D BRUNI A BRUNI G BRUNI P ROMEO GC CASTELLINI G CHIARINI M CIFARELLI L CINDOLO F CONTIN A CORRADI M GIALAS I GIUSTI P IACOBUCCI G LAURENTI G LEVI G MARGOTTI A MASSAM T NANIA R NEMOZ C PALMONARI F POLINI A SARTORELLI G TIMELLINI R GARCIA YZ ZICHICHI A BARGENDE A CRITTENDEN J DESCH K DIEKMANN B DOEKER T ECKERT M FELD L FREY A GEERTS M GEITZ G GROTHE M HAAS T HARTMANN H HAUN D HEINLOTH K HILGER E JAKOB HP KATZ UF MARI SM MASS A MENGEL S MOLLEN J PAUL E REMBSER C SCHATTEVOY R SCHRAMM D STAMM J WEDEMEYER R CAMPBELLROBSON S CASSIDY A DYCE N FOSTER B GEORGE S GILMORE R HEATH GP HEATH HF LLEWELLYN TJ MORGADO CJS NORMAN DJP OMARA JA TAPPER RJ WILSON SS YOSHIDA R RAU RR ARNEODO M IANNOTTI L SCHIOPPA M SUSINNO G BERNSTEIN A CALDWELL A PARSONS JA RITZ S SCIULLI F STRAUB PB WAI L YANG S ZHU Q BORZEMSKI P CHWASTOWSKI J ESKREYS A PIOTRZKOWSKI K ZACHARA M ZAWIEJSKI L ADAMCZYK L BEDNAREK B ESKREYS K JELEN K KISIELEWSKA D KOWALSKI T RULIKOWSKAZAREBSKA E SUSZYCKI L ZAJAC J BAUERDICK LAT BEHRENS U BEIER H BIENLEIN JK COLDEWEY C DEPPE O DESLER K DREWS G FLASINSKI M GILKINSON DJ GLASMAN C GOTTLICHER P GROSSEKNETTER J GUTJAHR B HAIN W HASELL D HESSLING H HULTSCHIG H IGA Y JOOS P KASEMANN M KLANNER R KOCH W KOPKE L KOTZ U KOWALSKI H LABS J LADAGE A LOHR B LOWE M LUKE D MANCZAK O NG JST NICKEL S NOTZ D OHRENBERG K ROCO M ROHDE M ROLDAN J SCHNEEKLOTH U SCHULZ W SELONKE E STILIARIS E SURROW B VOSS T WESTPHAL D WOLF G YOUNGMAN C ZHOU JF GRABOSCH HJ KHARCHILAVA A LEICH A MATTINGLY M MEYER A SCHLENSTEDT S WULFF N BARBAGLI G PELFER P ANZIVINO G MACCARRONE G DEPASQUALE S VOTANO L BAMBERGER A EISENHARDT S FREIDHOF A SOLDNERREMBOLD S SCHROEDER J TREFZGER T BROOK NH BUSSEY PJ DOYLE AT FLECK I SAXON DH UTLEY ML WILSON AS DANNEMANN A HOLM U HORSTMANN D NEUMANN T SINKUS R WICK K BADURA E BUROW BD HAGGE L LOHRMANN E MAINUSCH J MILEWSKI J NAKAHATA M PAVEL N POELZ G SCHOTT W ZETSCHE F BACON TC BUTTERWORTH I GALLO E HARRIS VL HUNG BYH LONG KR MILLER DB MORAWITZ PPO PRINIAS A SEDGBEER JK WHITFIELD AF MALLIK U MCCLIMENT E WANG MZ WANG SM WU JT ZHANG Y CLOTH P FILGES D AN SH HONG SM NAM SW PARK SK SUH MH YON SH IMLAY R KARTIK S KIM HJ MCNEIL RR METCALF W NADENDLA VK BARREIRO F CASES G GRACIANI R HERNANDEZ JM HERVAS L LABARGA L DELPESO J PUGA J TERRON J DETROCONIZ JF SMITH GR CORRIVEAU F HANNA DS HARTMANN J HUNG LW LIM JN MATTHEWS CG PATEL PM SINCLAIR LE STAIRS DG STLAURENT M ULLMANN R ZACEK G BASHKIROV V DOLGOSHEIN BA STIFUTKIN A BASHINDZHAGYAN GL ERMOLOV PF GLADILIN LK GOLUBKOV YA KOBRIN VD KUZMIN VA PROSKURYAKOV AS SAVIN AA SHCHEGLOVA LM SOLOMIN AN ZOTOV NP BOTJE M CHLEBANA E DAKE A ENGELEN J DEKAMPS M KOOIJMAN P KRUSE A TIECKE H VERKERKE W VREESWIJK M WIGGERS L DEWOLF E VANWOUDENBERG R ACOSTA D BYLSMA B DURKIN LS HONSCHEID K LI C LING TY MCLEAN H MURRAY WN PARK IH ROMANOWSKI TA SEIDLEIN R BAILEY DS BLAIR GA BYRNE A CASHMORE RJ COOPERSARKAR AM DANIELS D DEVENISH RCE HARNEW N LANCASTER M LUFFMAN PE LINDEMANN L MCFALL JD NATH C NOYES VA QUADT A UIJTERWAAL H WALCZAK R 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 BULMAHN J BUTTERWORTH JM FEILD RG OH BY WHITMORE JJ DAGOSTINI G MARINI G NIGRO A TASSI E HART JC MCCUBBIN NA PRYTZ K SHAH TP SHORT TL BARBERIS E CARTIGLIA N DUBBS T HEUSCH C VANHOOK M HUBBARD B LOCKMAN W RAHN JT SADROZINSKI HFW SEIDEN A BILTZINGER J SEIFERT RJ WALENTA AH ZECH G ABRAMOWICZ H BRISKIN G DAGAN S LEVY A HASEGAWA T HAZUMI M ISHII T KUZE M MINE S NAGASAWA Y NAKAO M SUZUKI I TOKUSHUKU K YAMADA S YAMAZAKI Y CHIBA M HAMATSU R HIROSE T HOMMA K KITAMURA S NAKAMITSU Y YAMAUCHI K CIRIO R COSTA M FERRERO MI LAMBERTI L MASELLI S PERONI C SACCHI R SOLANO A STAIANO A DARDO M BAILEY DC BANDYOPADHYAY D BENARD F BRKIC M CROMBIE MB GINGRICH DM HARTNER GF JOO KK LEVMAN GM MARTIN JF ORR RS SAMPSON CR TEUSCHER RJ CATTERALL CD JONES TW KAZIEWICZ PB LANE JB SAUNDERS RL SHULMAN J BLANKENSHIP K KOCHOCKI J LU B MO LW BOGUSZ W CHARCHULA K 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 EISENBERG Y KARSHON U REVEL D ZERZION D ALI I BADGETT WF BEHRENS B DASU S FORDHAM C FOUDAS C GOUSSIOU A LOVELESS RJ REEDER DD SILVERSTEIN S SMITH WH VAICIULIS A WODARCZYK M TSURUGAI T BHADRA S CARDY ML FAGERSTROEM CP FRISKEN WR FURUTANI KM KHAKZAD M SCHMIDKE WB
Citation
M. Derrick et al., STUDY OF D-ASTERISK(2010)(+ -)-PRODUCTION IN EP-COLLISIONS AT HERA/, Physics letters. Section B, 349(1-2), 1995, pp. 225-237
Citations number
57
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
349
Issue
1-2
Year of publication
1995
Pages
225 - 237
Database
ISI
SICI code
0370-2693(1995)349:1-2<225:SOD-IE>2.0.ZU;2-D
Abstract
We report the first observation of charmed mesons with the ZEUS detect or at HERA using the decay channel D(+) --> (D-0 --> K(-)pi(+)) pi(+) (+ c.c.). Clear signals in the mass difference Delta M=M(D)-M(D-0) a s well as in the M(K pi) distribution at the D-0 mass are found. The e p cross section for inclusive D(+/-) production with Q(2) < 4 GeV2 in the gamma p centre-of-mass energy range 115 < W < 275 GeV has been de termined to be (32+/-7(-7)(+4)) nb in the kinematic region {pr(D) gre ater than or equal to 1.7 GeV, \pi(D)\ < 1.5}. Extrapolating outside this region, assuming a mass of the charm quark of 1.5 GeV, we estimat e the ep charm cross section to be sigma(ep --> c $($) over bar$$ cX)= (0.45+/-0.11(-0.22)(+0.37)) mu b at root s=296 GeV and [W]=198 GeV. Th e average gamma p charm cross section sigma(gamma p --> c $($) over ba r$$ cX) is found to be (6.3+/-2.2(-3.0)(+6.3)) mu b at [W]=163 GeV and (16.9+/-5.2(-8.5)(+13.9)) mu b at [W]=243 GeV. The increase of the to tal charm photoproduction cross section by one order of magnitude with respect to low energy data experiments is well described by QCD NLO c alculations using singular gluon distributions in the proton.