Production of the $T^{+}_{cc}$ state in the $\gamma{}p\to{}D^{+}\bar{T}^{-}_{cc}\Lambda_c^{+}$ reaction

TL;DR

This paper proposes a method to produce the exotic $T^{+}_{cc}$ state in photon-proton collisions using a chiral unitary theory framework, predicting measurable cross sections to test its molecular nature.

Contribution

It introduces a novel production mechanism for $T^{+}_{cc}$ in $ ext{γ}p$ reactions and calculates cross sections based on chiral unitary theory, aiding future experimental verification.

Findings

Predicted cross section of about 1.0 pb for the reaction.

Production mechanism is feasible at future electron-ion colliders.

Results can test the molecular nature of $T^{+}_{cc}$.

Abstract

Stimulated by the recent LHCb observation of a new exotic charged structure $T^{+}_{cc}$, we propose to use the central diffractive mechanism existing in the $\gamma{}p\to{}D^{+}\bar{T}^{-}_{cc}\Lambda_c^{+}$ ($\bar{T}_{cc}$ is antiparticle of $T^{+}_{cc}$) reaction to produce $T^{+}_{cc}$. Our theoretical approach is based on the chiral unitary theory where the $T^{+}_{cc}$ resonance is dynamically generated. With the coupling constant of the $T^{+}_{cc}$ to $DD^{*}$ channel obtained from chiral unitary theory, the total cross sections of the $\gamma{}p\to{}D^{+}\bar{T}^{-}_{cc}\Lambda_c^{+}$ reaction are evaluated. Our study indicates that the cross section for $\gamma{}p\to{}D^{+}\bar{T}^{-}_{cc}\Lambda_c^{+}$ reaction are of the order of 1.0 pb, which is accessible at the proposed EicC~\cite{Anderle:2021wcy} and US-EIC~\cite{Accardi:2012qut} due to the higher luminosity. If measured in future experiments, the predicted total cross sections can be used to test the (molecular) nature of the $T^{+}_{cc}$.