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2009

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cc by (c) HERA-B Collaboration, 2009
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/56366

Angular distributions of leptons from J/ ψ's produced in 920 GeV fixed-target proton-nucleus collisions

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Abstract

A study of the angular distributions of leptons from decays of J/ψ"s produced in p-C and p-W collisions at s√=41.6~GeV has been performed in the J/ψ Feynman-x region −0.341 GeV/c a significant dependence on the reference frame is found: the polar anisotropy is more pronounced in the Collins-Soper frame and almost vanishes in the helicity frame, where, instead, a significant azimuthal anisotropy arises.

Related resource

http://dx.doi.org/10.1140/epjc/s10052-009-0957-7

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Astronomia, Astrofísica, Física nuclear, Partícules (Física nuclear), Teoria quàntica de camps

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Astronomy, Astrophysics, Nuclear physics, Particles (Nuclear physics), Quantum field theory

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CONDE, P., et al. Angular distributions of leptons from J/ ψ's produced in 920 GeV fixed-target proton-nucleus collisions. European Physical Journal C. 2009. Vol. 60, num. 4, pags. 517-524. ISSN 1434-6044. [consulted: 10 of October of 2026]. Available at: https://hdl.handle.net/2445/56366

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