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arXiv · 2107.14482

Central exclusive production of $\eta_c$ and $\chi_{c0}$ in the light-front k$_{\perp}$-factorization approach

Izabela Babiarz·Roman Pasechnik·Wolfgang Schäfer·Antoni Szczurek
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Abstract

We study the exclusive production of $J^{PC}=0^{++}, 0^{--}$ charmonium states in proton-proton collisions at the LHC energies The $pp \to pp\eta_c$ reaction is discussed for the first time. We observe a substantial contribution from the nonperturbative domain of gluon virtualities, especially for $\eta_c$ production. To model the nonperturbative region better, we utilize models of the unintegrated gluon distribution based on parametrizations of the color dipole cross-section.

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Izabela Babiarz, Roman Pasechnik, Wolfgang Schäfer, Antoni Szczurek. 2021-07-30. Central exclusive production of $\eta_c$ and $\chi_{c0}$ in the light-front k$_{\perp}$-factorization approach. https://arxiv.org/abs/2107.14482

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