On exotic hybrid meson production in gamma* gamma collisions

Details On exotic hybrid meson production in gamma* gamma collisions On exotic hybrid meson production in gamma* gamma collisions

2006-01-20

arxiv.org/abs/hep-ph/0601176v1

Eur.Phys.J.C47:71-79,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, 14 figures

Scientific paper

10.1140/epjc/s2006-02533-7

We present a theoretical study of exotic hybrid meson (JPC=1-+) production in photon-photon collisions where one of the photons is deeply virtual, including twist 2 and twist 3 contributions. We calculate the cross section of this process which turns out to be large enough to imply sizeable counting rates in the present high luminosity electron-positron colliders. We emphasize theimportance of the pi eta decay channel for the detection of the hybrid meson candidate pi_1(1400) and calculate the cross section and the angular distribution for pi eta pair production in the unpolarized case. This angular distribution is a useful tool for disentangling the hybrid meson signal from the background. Finally, we calculate the single spin asymmetry associated with one initial longitudinally polarized lepton.

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