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Measurement of D+ and Lambda(+)(c) production in deep inelastic scattering at HERA

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+ -> K-S(0)pi(+), Lambda(+)(c) -> pK(S)(0) and Lambda(+)(c) -> Lambda pi(+), and their charge conjugates, were reconstruc...

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Main Authors: 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., Bruemmer, 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, Y.A., Goettlicher, P., Grabowska-Bold, 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., Huettmann, A., Iacobucci, G., Ibrahim, Z.A., Iga, Y., Ingbir, R., Ishitsuka, M., Jakob, H.P., Januschek, F., Jimenez, M., Jones, T.W., Juengst, 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, I., Korzhavina, I.A., Kotanski, A., Koetz, 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., Loehr, B., Lohrmann, E., Loizides, J.H., Long, K.R., Longhin, A., Lontkovskyi, D., Lukina, O.Y., Luzniak, 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., Idris, F.M., 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, Y., 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., Proskuryakov, A.S., Przybycien, 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., Schoenberg, V., Schoerner-Sadenius, T., Schwartz, J., Sciulli, F., Shcheglova, L.M., Shehzadi, R., Shimizu, S., Singh, I., Skillicorn, I.O., Slominski, 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., Terron, J., Theedt, T., Tiecke, H., Tokushuku, K., Tomalak, O., Tomaszewska, J., Tsurugai, T., Turcato, M., Tymieniecka, T., Uribeestrada, C., Vazquez, M., Verbytskyi, A., Viazlo, O., Vlasov, N.N., Volynets, O., Walczak, R., Abdullah, W.A.T.W., Whitmore, J.J., Whyte, J., Wiggers, L., Wing, M., Wlasenko, M., Wolf, G., Wolfe, H., Wrona, K., Yaguees-Molina, A.G., Yamada, S., Yamazaki, Y., Yoshida, R., Youngman, C., Zarnecki, A.F., Zawiejski, L., Zenaiev, O., Zeuner, W., Zhautykov, B.O., Zhmak, N., Zhou, C., Zichichi, A., Zolko, M., Zotkin, D.S., Zulkapli, Z., Collaboration, ZEUS
Format: Article
Published: Institute of Physics 2010
Subjects:
Q Science (General)
Online Access:http://eprints.um.edu.my/12080/
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Summary: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+ -> K-S(0)pi(+), Lambda(+)(c) -> pK(S)(0) and Lambda(+)(c) -> Lambda pi(+), 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 < p(T) ( D+, Lambda(+)(c)) < 10GeV, vertical bar eta( D+,Lambda(+)(c))vertical bar < 1.6, 1.5 < Q(2) < 1000GeV(2) 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 Lambda(+)(c) baryons is extracted.

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