Measurement of J/ψ helicity distributions in inelastic photoproduction at HERA

The J/ψ decay angular distributions have been measured in inelastic photo-production in ep collisions with the ZEUS detector at HERA, using an integrated luminosity of 468 pb-1. The range in photon-proton centre-of-mass energy, W, was 50 < W < 180 GeV. The J/ψ mesons were identified th...

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Bibliographic Details
Main Authors:	Chekanov, S, Derrick, M, Magill, S, Musgrave, B, Nicholass, D, Repond, J, Yoshida, R, Mattingly, M, Antonioli, P, Bari, G, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Cindolo, F, Corradi, M, Iacobucci, G, Margotti, A, Nania, R, Polini, A, Antonelli, S, Basile, M, Bindi, M, Cifarelli, L, Contin, A
Format:	Journal article
Language:	English
Published:	2009

Measurement of J/ψ helicity distributions in inelastic photoproduction at HERA

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