Production of four-quark states with double heavy quarks at LHC

TL;DR

This paper investigates the production of four-quark states with double heavy quarks at the LHC, proposing a mechanism involving diquark formation and fragmentation, and predicts promising detection prospects.

Contribution

It introduces a novel production mechanism for double heavy tetraquarks at LHC and provides quantitative predictions for their cross sections and signatures.

Findings

High production cross sections predicted for double heavy tetraquarks.

Distinctive signatures suggest promising detection potential at LHC.

Mechanism involving diquark formation enhances understanding of tetraquark production.

Abstract

We study the hadronic production of four-quark states with double heavy quarks and double light antiquarks at LHC. The production mechanism is that a color anti-triplet diquark cluster consisting of double heavy quarks is formed first from the produced double heavy quark-antiquark pairs via $gg$ fusion hard process, followed by the fragmentation of the diquark cluster into a four-quark (tetraquark) state. Predictions for the production cross sections and their differential distributions are presented. Our results show that it is quite promising to discover these tetraquark states in LHC experiments both for large number events and for their unique signatures in detectors.