Double Charmonia Production at LHCb

7th International Conference on Beauty, Charm, and Hyperons in Hadronic Interactions

Luchinsky, A.V.^1

Institute for High Energy Physics, Protvino, Russia^1

关键词: Charmonium;    Different mechanisms;    Leading orders;    Next-to-leading order corrections;    Parton scattering;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/770/1/012004/pdf
DOI  :  10.1088/1742-6596/770/1/012004

来源: IOP

【 摘 要 】

In this note next-to-leading order corrections to double charmonium production at LHCb are considered. It is shown that real gluon emission leads to significant change of the cross sections of considered processes. For example, forbidden at leading order production of C-odd stateXcJ/Ψ is possible at NLO. Distributions over various kinematical variables are analyzed and the question of separating contributions of different mechanisms (direct J/ΨJ/Ψ production, radiative feed-down fromXcJ/Ψ, double parton scattering) is considered.