Production of vector mesons in pentaquark states resonance channel in $p$-$A$ ultraperipheral collisions

TL;DR

This paper investigates vector meson production in pentaquark resonance channels during ultraperipheral proton-nucleus collisions at RHIC and LHC, highlighting RHIC's advantages for pentaquark discovery and identifying specific states.

Contribution

It introduces a method to calculate vector meson production cross sections via pentaquark resonances in UPCs using the STARlight package and effective Lagrangian approach.

Findings

RHIC is more suitable than LHC for pentaquark detection.

P_{b}(11080) is easier to identify than P_c(4312) due to lower background.

Distributions of J/ψ and Υ(1S) are provided for different collision systems.

Abstract

Ultraperipheral collisions (UPCs) of protons and nuclei are important for the study of the photoproduction of vector mesons and exotic states. The photoproduction of vector mesons in the pentaquark resonance channel in $p\mbox{-}Au$ UPCs at the Relative Heavy Ion Collider (RHIC) and $p$-$Pb$ UPCs at the Large Hadron Collider (LHC) is investigated by employing STARlight package. The cross sections of vector mesons via pentaquark state resonances channel are obtained using effective Lagrangian method. The pseudo-rapidity and rapidity distributions of $J/\psi $ and $\Upsilon(1S) $ are given for $p\mbox{-}Au$ UPCs at the RHIC and $p$-$Pb$ at the LHC. It is found that the RHIC is a better platform for discovering the pentaquark states than the LHC. Moreover, $P_{b}(11080)$ is easier to identify than $P_c(4312)$ because the background of $\Upsilon (1S)$ is weaker than $J/\psi$ in the $t$-channel at the RHIC.