Hadronic production of $B^{(*)}_s$ at TEVATRON and LHC

TL;DR

This paper analyzes the theoretical predictions for the production rates of $B_s$ and $B_s^*$ mesons at TEVATRON and LHC, highlighting the impact of parameter uncertainties and kinematic cuts on cross section estimates.

Contribution

It provides a detailed calculation of $B_s$ and $B_s^*$ production using the complete $ ext{α}_s^4$ approach within the fixed-flavor-number scheme, including uncertainty analysis.

Findings

Cross section decreases significantly with increasing strange quark mass.

Uncertainties from parton distribution functions and scale variations are within 20-33%.

Kinematic cuts significantly affect production rate estimations.

Abstract

We study the hadronic production of $B_s$ and $B_s^*$ mesons within the fixed-flavor-number scheme, in which the dominant gluon-gluon fusion mechanism is dealt with by using the complete $\alpha_s^4$ approach. Main theoretical uncertainties for $B_s$ and $B_s^*$ production at TEVATRON and LHC are presented. It is found that when $m_s$ increases by steps of 0.1 GeV, the integrated cross section of $B^{(*)}_s$ decreases by $80%-100%$, when $m_b$ increases by steps of 0.1 GeV, it changes to be $\sim 10%$. While the uncertainties caused by the parton distribution function and the factorization scale varies within the region of 1/5 to 1/3. Considering possible kinematic cut on the transverse momentum and the rapidity cut for the detectors at TEVATRON and LHC, we also make estimations on the $B_s$ and $B_s^*$ production with various kinematic cuts.