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STUDY OF D-ASTERISK(2010)(+/-)-PRODUCTION IN EP-COLLISIONS AT HERA RID B-9165-2008 RID C-5889-2009 RID A-4818-2008 RID C-1693-2008
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 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 S WU JT ZHANG Y CLOTH P FILGES D AN SH HONG S 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 MARI, Stefano Maria 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, Stefano Maria 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, Cj Norman, Djp Omara, Ja Tapper, Rj Wilson, S 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, A 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, S Wu, Jt Zhang, Y Cloth, P Filges, D An, Sh Hong, S 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, D 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, A 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, L Honscheid, K Li, C Ling, Ty Mclean, H Murray, Wn Park, Ih Romanowski, Ta Seidlein, R Bailey, D 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, R 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
Publication Year :
1995
Abstract
We report the first observation of charmed mesons with the ZEUS detector 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) as well as in the M(K pi) distribution at the D-0 mass are found. The ep 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 determined to be (32+/-7(-7)(+4)) nb in the kinematic region {pr(D*) greater 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 estimate the ep charm cross section to be sigma(ep --> c $($) over bar$$ cX)=(0.45+/-0.11(-0.22)(+0.37)) mu b at root s=296 GeV and [W]=198 GeV. The average gamma p charm cross section sigma(gamma p --> c $($) over bar$$ 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 total charm photoproduction cross section by one order of magnitude with respect to low energy data experiments is well described by QCD NLO calculations using singular gluon distributions in the proton.
Details
Language :
English
Database :
OpenAIRE
Accession number :
edsair.od......3668..c173661324f1d71bbd3bc5c5f90f1f72