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

by Izabela Babiarz, Roman Pasechnik, Wolfgang Schäfer, Antoni Szczurek

Submission summary

As Contributors: Wolfgang Schäfer
Preprint link: scipost_202107_00086v1
Date accepted: 2022-03-01
Date submitted: 2021-07-30 10:26
Submitted by: Schäfer, Wolfgang
Submitted to: SciPost Physics Proceedings
Proceedings issue: DIS2021
Academic field: Physics
  • High-Energy Physics - Phenomenology
  • Nuclear Physics - Theory
Approaches: Theoretical, Phenomenological


We study the exclusive production of $J^{PC}=0^{++}, 0^{--}$ charmonium states in proton-proton collisions at the LHC energies. The amplitudes for $g^*g^*→\chi_{c0}$ as well as for$ gg→\eta_c$ mechanisms are derived in the kT-factorization approach. 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.

Current status:
Publication decision taken: accept

Editorial decision: For Journal SciPost Physics Proceedings: Publish
(status: Editorial decision fixed and (if required) accepted by authors)

Submission & Refereeing History

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Submission scipost_202107_00086v1 on 30 July 2021

Reports on this Submission

Anonymous Report 1 on 2022-2-27 (Invited Report)


Nicely presented results. Recommended for publication.

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