Production of $\eta_Q$ meson at LHC

TL;DR

This paper provides a theoretical analysis of inclusive $ ext{eta}_Q$ meson production at the LHC, demonstrating that existing data can be explained using NRQCD with a dominant color-singlet component, and offers predictions for future measurements.

Contribution

It introduces a model using NRQCD with a phenomenological matrix element to describe $ ext{eta}_c$ production and extends predictions to other LHC detectors and $ ext{eta}_b$ meson production.

Findings

Existing $ ext{eta}_c$ production data can be described by NRQCD with a dominant color-singlet component.

The model provides predictions for cross sections and transverse momentum distributions at various LHC detectors.

The approach is also applied to $ ext{eta}_b$ meson production at LHC.

Abstract

The paper is devoted to theoretical consideration of inclusive $\eta_{c,b}$ meson production at LHC. It is shown that existing experimental data on $\eta_c$ meson production at LHCb detector can be described in the framework of NRQCD formalism and color-singlet component with phenomenological value of matrix element $|R(0)|^2$ gives main contribution. Using this model we present theoretical prediction for integrated cross sections and transverse momentum distributions for inclusive $\eta_c$ production at other LHC detectors. The case of $\eta_b$ meson production at LHC is also considered.