Hadronic Production of the Doubly Heavy Baryon $\Xi_{bc}$ at LHC

TL;DR

This paper analyzes the production of the doubly heavy baryon $\\Xi_{bc}$ at the LHC, providing detailed cross-section estimates and discussing uncertainties, which aids experimental searches for this particle.

Contribution

It offers the first comprehensive calculation of $\\Xi_{bc}$ production considering multiple diquark states and compares its production with other doubly heavy baryons at the LHC.

Findings

Approximately 1.7×10^7 $\\Xi_{bc}$ events/year at 7 TeV

Approximately 3.5×10^9 $\\Xi_{bc}$ events/year at 14 TeV

Main uncertainties and differential cross-section estimates provided

Abstract

We investigate the hadronic production of the doubly heavy baryon $\Xi_{bc}$ at the large hadron collider (LHC), where contributions from the four $(bc)$-diquark states $(bc)_{\bf\bar{3},6}[^1S_0]$ and $(bc)_{\bf\bar{3},6}[^3S_1]$ have been taken into consideration. Numerical results show that under the condition of $p_T>4$ GeV and $|y|<1.5$, sizable $\Xi_{bc}$ events about $ 1.7\times 10^7$ and $3.5\times10^9$ per year can be produced for the center-of-mass energy $\sqrt{S}=7$ TeV and $\sqrt{S}=14$ TeV respectively. For experimental usage, the total and the interested differential cross-sections are estimated under some typical $p_T$- and $y$- cuts for the LHC detectors CMS, ATLAS and LHCb. Main uncertainties are discussed and a comparative study on the hadronic production of $\Xi_{cc}$, $\Xi_{bc}$ and $\Xi_{bb}$ at LHC are also presented.