학술논문

Measurement of D + and Λ c + production in deep inelastic scattering at HERA
Document Type
Original Paper
Author
Abramowicz, H.Abt, I.Adamczyk, L.Adamus, M.Aggarwal, R.Antonelli, S.Antonioli, P.Antonov, A.Arneodo, M.Aushev, V.Aushev, Y.Bachynska, O.Bamberger, A.Barakbaev, A.N.Barbagli, G.Bari, G.Barreiro, F.Bartsch, D.Basile, M.Behnke, O.Behr, J.Behrens, U.Bellagamba, L.Bertolin, A.Bhadra, S.Bindi, M.Blohm, C.Bold, T.Boos, E. G.Borodin, M.Borras, K.Boscherini, D.Bot, D.Boutle, S. K.Brock, I.Brownson, E.Brugnera, R.Brümmer, N.Bruni, A.Bruni, G.Brzozowska, B.Bussey, P. J.Butterworth, J. M.Bylsma, B.Caldwell, A.Capua, M.Carlin, R.Catterall, C. D.Chekanov, S.Chwastowski, J.Ciborowski, J.Ciesielski, R.Cifarelli, L.Cindolo, F.Contin, A.Cooper-Sarkar, A. M.Coppola, N.Corradi, M.Corriveau, F.Costa, M.D’Agostini, G.Dal Corso, F.de Favereau, J.del Peso, J.Dementiev, R. K.De Pasquale, S.Derrick, M.Devenish, R. C. E.Dobur, D.Dolgoshein, B. A.Doyle, A. T.Drugakov, V.Durkin, L. S.Dusini, S.Eisenberg, Y.Ermolov, P. F.Eskreys, A.Fang, S.Fazio, S.Ferrando, J.Ferrero, M. I.Figiel, J.Forrest, M.Foster, B.Fourletov, S.Gach, G.Galas, A.Gallo, E.Garfagnini, A.Geiser, A.Gialas, I.Gladilin, L. K.Gladkov, D.Glasman, C.Gogota, O.Golubkov, Yu. A.Göttlicher, P.Grabowska-Bołd, I.Grebenyuk, J.Gregor, I.Grigorescu, G.Grzelak, G.Gwenlan, C.Haas, T.Hain, W.Hamatsu, R.Hart, J. C.Hartmann, H.Hartner, G.Hilger, E.Hochman, D.Holm, U.Hori, R.Horton, K.Hüttmann, A.Iacobucci, G.Ibrahim, Z. A.Iga, Y.Ingbir, R.Ishitsuka, M.Jakob, H.-P.Januschek, F.Jimenez, M.Jones, T. W.Jüngst, M.Kadenko, I.Kahle, B.Kamaluddin, B.Kananov, S.Kanno, T.Karshon, U.Karstens, F.Katkov, I. I.Kaur, M.Kaur, P.Keramidas, A.Khein, L. A.Kim, J. Y.Kisielewska, D.Kitamura, S.Klanner, R.Klein, U.Koffeman, E.Kollar, D.Kooijman, P.Korol, Ie.Korzhavina, I. A.Kotański, A.Kötz, U.Kowalski, H.Kulinski, P.Kuprash, O.Kuze, M.Lee, A.Levchenko, B. B.Levy, A.Libov, V.Limentani, S.Ling, T. Y.Lisovyi, M.Lobodzinska, E.Lohmann, W.Löhr, B.Lohrmann, E.Loizides, J. H.Long, K. R.Longhin, A.Lontkovskyi, D.Lukina, O. Yu.Łużniak, P.Maeda, J.Magill, S.Makarenko, I.Malka, J.Mankel, R.Margotti, A.Marini, G.Martin, J. F.Mastroberardino, A.Matsumoto, T.Mattingly, M. C. K.Melzer-Pellmann, I.-A.Miglioranzi, S.Mohamad Idris, F.Monaco, V.Montanari, A.Morris, J. D.Musgrave, B.Nagano, K.Namsoo, T.Nania, R.Nicholass, D.Nigro, A.Ning, Y.Noor, U.Notz, D.Nowak, R. J.Nuncio-Quiroz, A. E.Oh, B. Y.Okazaki, N.Oliver, K.Olkiewicz, K.Onishchuk, Yu.Ota, O.Papageorgiu, K.Parenti, A.Paul, E.Pawlak, J. M.Pawlik, B.Pelfer, P. G.Pellegrino, A.Perlanski, W.Perrey, H.Piotrzkowski, K.Plucinski, P.Pokrovskiy, N. S.Polini, A.P roskuryakov, A. S.Przybycień, M.Raval, A.Reeder, D. D.Reisert, B.Ren, Z.Repond, J.Ri, Y. D.Robertson, A.Roloff, P.Ron, E.Rubinsky, I.Ruspa, M.Sacchi, R.Salii, A.Samson, U.Sartorelli, G.Savin, A. A.Saxon, D. H.Schioppa, M.Schlenstedt, S.Schleper, P.Schmidke, W. B.Schneekloth, U.Schönberg, V.Schörner-Sadenius, T.Schwartz, J.Sciulli, F.Shcheglova, L. M.Shehzadi, R.Shimizu, S.Singh, I.Skillicorn, I. O.Slomiński, W.Smith, W. H.Sola, V.Solano, A.Son, D.Sosnovtsev, V.Spiridonov, A.Stadie, H.Stanco, L.Stern, A.Stewart, T. P.Stifutkin, A.Stopa, P.Suchkov, S.Susinno, G.Suszycki, L.Sztuk, J.Szuba, D.Szuba, J.Tapper, A. D.Tassi, E.Terrón, J.Theedt, T.Tiecke, H.Tokushuku, K.Tomalak, O.Tomaszewska, J.Tsurugai, T.Turcato, M.Tymieniecka, T.Uribe-Estrada, C.Vázquez, M.Verbytskyi, A.Viazlo, O.Vlasov, N. N.Volynets, O.Walczak, R.Wan Abdullah, W. A. T.Whitmore, J. J.Whyte, J.Wiggers, L.Wing, M.Wlasenko, M.Wolf, G.Wolfe, H.Wrona, K.Yagües-Molina, A. A.Yamada, S.Yamazaki, Y.Yoshida, R.Youngman, C.Żarnecki, A. A.Zawiejski, L.Zenaiev, O.Zeuner, W.Zhautykov, B. O.Zhmak, N.Zhou, C.Zichichi, A.Zolko, M.Zotkin, D. S.Zulkapli, Z.ZEUS collaboration
Source
Journal of High Energy Physics. November 2010 2010(11):1-27
Subject
Lepton-Nucleon Scattering
Language
English
ISSN
1029-8479
Abstract
Charm production in deep inelastic scattering has been measured with the ZEUS detector at HERA using an integrated luminosity of 120 pb−1. The hadronic decay channels D+ → KS0π+, Λc+ → pKS0 and Λc+ → Λπ+, and their charge conjugates, were reconstructed. The presence of a neutral strange hadron in the final state reduces the combinatorial background and extends the measured sensitivity into the low transverse momentum region. The kinematic range is 0 < pT(D+, Λc+) < 10 GeV, |η(D+, Λc+)| < 1.6, 1.5 < Q2 < 1000 GeV2 and 0.02 < y < 0.7. Inclusive and differential cross sections for the production of D+ mesons are compared to next-to-leading-order QCD predictions. The fraction of c quarks hadronising into Λc+ baryons is extracted.