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arXiv · hep-ph/0506277

Search for isotensor exotic meson and twist 4 contribution to $γ^*γ\toρρ$

I. V. Anikin·B. Pire·O. V. Teryaev
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Abstract

We present a theoretical estimate for the cross-section of exclusive $ρ^+ρ^-$ and $ρ^0ρ^0$-meson production in two photon collisions when one of the initial photons is highly virtual. We focus on the discussion of the twist 4 contributions which are related to the production of an exotic isospin 2 resonance of two $ρ$ mesons. Our analysis shows that the recent experimental data obtained by the L3 Collaboration at LEP can be understood as a signal for the existence of an exotic isotensor resonance with a mass around $1.5 {\rm GeV}$.

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I. V. Anikin, B. Pire, O. V. Teryaev. 2005-07-12. Search for isotensor exotic meson and twist 4 contribution to $γ^*γ\toρρ$. https://doi.org/10.1016/j.physletb.2005.08.113

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