Elastic and Proton-Dissociative Photoproduction of $J/\psi$ Mesons at HERA
- Alexa, C.
- Andreev, V.
- Brandt, G.
- Morris, J. V.
- Müller, K.
- Naumann, Th.
- Newman, P. R.
- Niebuhr, C.
- Nikitin, Dmitri
- Nowak, G.
- Nowak, Krzysztof
- Olsson, J. E.
- Ozerov, Dmitri
- Brinkmann, M.
- Pahl, P.
- Palichik, V.
- Pandurovic, Mila
- Pascaud, C.
- Patel, Girish D.
- Perez, E.
- Petrukhin, A.
- Picuric, I.
- Pirumov, H.
- Pitzl, D.
- Brisson, V.
- Plačakytė, R.
- Pokorny, B.
- Polifka, R.
- Radescu, V.
- Raicevic, N.
- Ravdandorj, T.
- Reimer, P.
- Rizvi, E.
- Robmann, P.
- Roosen, R.
- Britzger, D.
- Rostovtsev, A.
- Rotaru, M.
- Ruiz Tabasco, J. E.
- Rusakov, S.
- Šálek, D.
- Sankey, Dave P. C.
- Sauter, M.
- Sauvan, E.
- Schmitt, S.
- Schoeffel, L.
- Buniatyan, A.
- Schöning, A.
- Schultz-Coulon, H.-C.
- Sefkow, F.
- Shushkevich, S.
- Soloviev, Y.
- Sopicki, P.
- South, D.
- Spaskov, V.
- Specka, A.
- Staykova, Zlatka
- Bylinkin, A.
- Steder, M.
- Stella, B.
- Stoicea, Gabriel
- Straumann, U.
- Sykora, T.
- Thompson, P. D.
- Traynor, D.
- Truöl, P.
- Tsakov, I.
- Tseepeldorj, B.
- Bystritskaya, L.
- Turnau, J.
- Valkárová, A.
- Vallée, C.
- Mechelen, P.
- Vazdik, Yakov
- Wegener, D.
- Wünsch, E.
- Žáček, J.
- Zalesak, Jaroslav
- Zhang, Z.
- Campbell, A. J.
- Žlebčík, Radek
- Zohrabyan, H.
- Zomer, F.
- H1 Collaboration
- Cantun Avila, K. B.
- Ceccopieri, F.
- Baghdasaryan, A.
- Cerny, K.
- Chekelian, V.
- Contreras, J. Guillermo
- Cvach, J.
- Dainton, John B.
- Daum, K.
- Wolf, E. A.
- Diaconu, C.
- Dobre, Monica
- Dodonov, Vitaliy
- Baghdasaryan, S.
- Dossanov, A.
- Eckerlin, G.
- Egli, Stephan
- Elsen, E.
- Favart, L.
- Fedotov, A.
- Felst, R.
- Feltesse, J.
- Ferencei, J.
- Fischer, D.-J.
- Bartel, W.
- Fleischer, M.
- Fomenko, A.
- Gabathuler, E.
- Gayler, J.
- Ghazaryan, S.
- Glazov, A.
- Goerlich, L.
- Gogitidze, N.
- Gouzevitch, Maxime
- Grab, C.
- Begzsuren, K.
- Grebenyuk, A.
- Greenshaw, T.
- Grindhammer, G.
- Habib, S.
- Haidt, D.
- Henderson, Rob C. W.
- Hennekemper, Eva
- Herbst, Michael
- Herrera, Gerardo
- Hildebrandt, M.
- Belousov, A.
- Hiller, K. H.
- Hladkỳ, J.
- Hoffmann, D.
- Horisberger, Roland
- Hreus, T.
- Huber, Florian
- Jacquet, M.
- Janssen, X.
- Jönsson, L.
- Jung, H.
- Belov, P.
- Kapichine, Mikhail
- Kiesling, C.
- Klein, M.
- Kleinwort, C.
- Kogler, R.
- Kostka, P.
- Kraemer, Mira
- Kretzschmar, J.
- Krüger, K.
- Landon, Murrough P. J.
- Boudry, Vincent
- Lange, W.
- Laycock, P.
- Lebedev, A.
- Levonian, S.
- Lipka, K.
- List, B.
- List, J.
- Lobodzinski, Bogdan
- Lopez-Fernandez, Ricardo
- Lubimov, Valentin
- Bozovic-Jelisavcic, Ivanka
- Malinovski, E.
- Martyn, H.-U.
- Maxfield, Steve J.
- Mehta, A.
- Meyer, A. B.
- Meyer, Hinrich
- Meyer, J.
- Mikocki, S.
- Milcewicz-Mika, I.
- Morozov, A.
DOIAbstract
Cross sections for elastic and proton-dissociative photoproduction of J/ψ mesons are measured with the H1 detector in positron-proton collisions at HERA. The data were collected at ep centre-of-mass energies s√≈318 GeV and s√≈225 GeV , corresponding to integrated luminosities of L=130 pb−1 and L=10.8 pb−1 , respectively. The cross sections are measured as a function of the photon-proton centre-of-mass energy in the range 25<W γp <110 GeV. Differential cross sections dσ/dt, where t is the squared four-momentum transfer at the proton vertex, are measured in the range |t|<1.2 GeV2 for the elastic process and |t|<8 GeV2 for proton dissociation. The results are compared to other measurements. The W γp and t-dependences are parametrised using phe...
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