Abstract
In this paper we investigate the $\eta_c$ production by photon - photon and photon - hadron interactions in $pp$ and $pA$ collisions at the LHC energies. The inclusive and diffractive contributions for the $\eta_c$ photoproduction are estimated using the nonrelativistic quantum chromodynamics (NRQCD) formalism. We estimate the rapidity and transverse momentum distributions for the $\eta_c$ photoproduction in hadronic collisions at the LHC and present our estimate for the total cross sections at the Run 2 energies. A comparison with the predictions for the exclusive $\eta_c$ photoproduction, which is a direct probe of the Odderon, also is presented.
Highlights
The treatment of quarkonium production have attracted much attention during the last decades, mainly motivated by the possibility to probe the interplay between the long and short distance regimes of the strong interactions [1]
It is important to emphasize that the description of the LHCb data [22] for the ηc production at the LHC by gluon-gluon interactions using the nonrelativistic QCD (NRQCD) formalism still is a theme of intense debate [23–25]
Previous studies have focused in the ηc production in hadronic colliders by gluon-gluon interactions
Summary
The treatment of quarkonium production have attracted much attention during the last decades, mainly motivated by the possibility to probe the interplay between the long and short distance regimes of the strong interactions [1]. Final state being characterized by the presence of the quarkonium and a large number of additional tracks associated to fragmentation of the two incident hadrons The study of these inelastic interactions have been the main focus of recent analyses. It is important to emphasize that the description of the LHCb data [22] for the ηc production at the LHC by gluon-gluon interactions using the NRQCD formalism still is a theme of intense debate [23–25] Another motivation is related to the fact the ηc production in photon-photon and diffractive photon-hadron interactions are important backgrounds to the events associated to the exclusive ηc photoproduction, which are events where nothing else is produced except the leading hadrons and the ηc.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
