Production of exotic tetraquarks $QQ\bar{q}\bar{q}$ in heavy-ion collisions at the LHC

Abstract

We investigate the production of exotic tetraquarks, $QQ\bar{q}\bar{q}\equiv T_{QQ}$ ($Q=c$ or $b$ and $q=u$ or $d$), in relativistic heavy-ion collisions using the quark coalescence model. The $T_{QQ}$ yield is given by the overlap of the density matrix of the constituents in the emission source with the Wigner function of the produced tetraquark. The tetraquark wave function is obtained from exact solutions of the four-body problem using realistic constituent models. The production yields are typically one order of magnitude smaller than previous estimations based on simplified wave functions for the tetraquarks. We also evaluate the consequences of the partial restoration of chiral symmetry at the hadronization temperature on the coalescence probability. Such effects, in addition to increasing the stability of the tetraquarks, lead to an enhancement of the production yields, pointing towards an excellent discovery potential in forthcoming experiments. We discuss further consequences of our findings for the search of exotic tetraquarks in central Pb+Pb collisions at the LHC.

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Cited by in corpus (23)

• Tetra- and penta-quark structures in the constituent quark model
• Doubly-heavy tetraquarks
• Masses of doubly heavy tetraquarks $T_{Q{Q}^{\prime }}$ in a relativized quark model
• Double-heavy tetraquark states with heavy diquark-antiquark symmetry
• Fully-heavy tetraquarks in strongly interacting medium
• Deciphering the nature of X(3872) in heavy ion collisions
• Spectroscopy, lifetime and decay modes of the $T_{bb}^{-}$ tetraquark
• The production of doubly charmed exotic hadrons in heavy ion collisions
• Double-charm tetraquark under the complex scaling method
• X(3872) Production in Relativistic Heavy-Ion Collisions
• Colour and baryon number fluctuation of preconfinement system in production process and T_cc structure
• X(3872) Transport in Heavy-Ion Collisions
• $QQ\bar{s}\bar{s}$ tetraquarks in the chiral quark model
• Triangle Singularity in the Production of $T_{cc}^{+}$(3875) and a Soft Pion
• Production of exotic hadrons in $pp$ and nuclear collisions
• $X(3872)$, $X(4014)$, and their bottom partners at finite temperature
• $D{\bar{D}}^{\ast }$ scattering and ${\chi }_{c1}(3872)$ in nuclear matter
• Search for tetraquark states $X_{cc\bar{s}\bar{s}}$ in $D_s^{+}{D}_s^{+}(D_s^{\ast +}{D}_s^{\ast +})$ final states at Belle
• Electromagnetic properties of the $T_{cc}^{+}$ molecular states
• Double-charm and hidden-charm hexaquark states under the complex scaling method
• Isospin violation effect and three-body decays of the $T_{cc}^{+}$ state
• Radiative decay and axial-vector decay behaviors of octet pentaquark states
• Mass-Spectroscopy of [$bb][\bar{b}\bar{b}$] and [$bq][\bar{b}\bar{q}$] tetraquark states in a diquark-antidiquark formalism