On exotic hybrid meson production in γ*γ collisions |
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Authors: | IV Anikin B Pire L Szymanowski OV Teryaev S Wallon |
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Institution: | (1) Bogoliubov Laboratory of Theoretical Physics, 141980 Dubna, Russia;(2) CPHT, école Polytechnique, 91128 Palaiseau, France;(3) Soltan Institute for Nuclear Studies, Warsaw, Poland;(4) Université de Liège, 4000 Liège, Belgium;(5) LPT, Université Paris-Sud, 91405 Orsay, France |
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Abstract: | 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 two and twist three 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 the importance of the πη decay channel for the detection
of the hybrid meson candidate π1(1400) and calculate the cross section and the angular distribution for π η 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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