The production of doubly charmed exotic hadrons in heavy ion collisions

Abstract

Hadron spectroscopy provides direct physical measurements that shed light on the non-perturbative behavior of quantum chromodynamics (QCD). In particular, various exotic hadrons such as the newly observed $T_{cc}^{+}$ by the LHCb collaboration, offer unique insights on the QCD dynamics in hadron structures. In this letter, we demonstrate how heavy ion collisions can serve as a powerful venue for hadron spectroscopy study of doubly charmed exotic hadrons by virtue of the extremely charm-rich environment created in such collisions. The yields of $T_{cc}^{+}$ as well as its potential isospin partners are computed within the molecular picture for Pb-Pb collisions at center-of-mass energy $2.76\mathrm{TeV}$. We find about three-order-of-magnitude enhancement in the production of $T_{cc}^{+}$ in Pb-Pb collisions as compared with the yield in proton-proton collisions, with a moderately smaller enhancement in the yields of the isospin partners $T_{cc}^0$ and $T_{cc}^{++}$. The $T_{cc}^{+}$ yield is comparable to that of the $X(3872)$ in the most central collisions while shows a considerably stronger decrease toward peripheral collisions, due to a "threshold" effect of the required double charm quarks for $T_{cc}^{+}$. Final results for their rapidity and transverse momentum $p_T$ dependence as well as the elliptic flow coefficient are reported and can be tested by future experimental measurements.

6 pages, 3 figures

References in corpus (19)

• Pentaquark and Tetraquark states
• Observation of the doubly charmed baryon ${\Xi }_{cc}^{++}$
• A survey of heavy-heavy hadronic molecules
• Masses of tetraquarks with two heavy quarks in the relativistic quark model
• QCD sum rules study of $QQ-\bar{u}\bar{d}$ mesons
• Multi-quark hadrons from Heavy Ion Collisions
• Isospin breaking effects in the X(3872) resonance
• Stable multiquark states with heavy quarks in a diquark model
• Heavy tetraquarks in the relativistic quark model
• Probing the long-range structure of the $T_{cc}^{+}$ with the strong and electromagnetic decays
• Isospin breaking, coupled-channel effects, and X(3872)
• Are there compact heavy four-quark bound states?
• Magnetic dipole moments of the $T_{cc}^{+}$ and $Z_V^{++}$ tetraquark states
• Production of $X(3872)$ at High Multiplicity
• Perfect $D{D}^{\ast }$ molecular prediction matching the $T_{cc}$ observation at LHCb
• Colour and baryon number fluctuation of preconfinement system in production process and T_cc structure
• Production of exotic tetraquarks $QQ\bar{q}\bar{q}$ in heavy-ion collisions at the LHC
• Hidden-charm tetraquarks with strangeness in the chiral quark model
• $D{\bar{D}}^{\ast }$ scattering and ${\chi }_{c1}(3872)$ in nuclear matter

Cited by in corpus (16)

• An updated review of the new hadron states
• Chiral perturbation theory for heavy hadrons and chiral effective field theory for heavy hadronic molecules
• Coupled-channel approach to $T_{cc}^{+}$ including three-body effects
• $T_{cc}^{+}$ coupled channel analysis and predictions
• $T_{cc}^{+}$ and its partners
• Prediction of new $T_{cc}$ states of $D^{\ast }{D}^{\ast }$ and $D_s^{\ast }{D}^{\ast }$ molecular nature
• Revisiting the $D{D}^{\ast }$ chiral interactions with the local momentum-space regularization up to the third order and the nature of $T_{cc}^{+}$
• Multiplicity of the doubly charmed state $T_{cc}^{+}$ in heavy-ion collisions
• Triangle Singularity in the Production of $T_{cc}^{+}$(3875) and a Soft Pion
• Heavy Flavour Physics and CP Violation at LHCb: a Ten-Year Review
• Interactions of the doubly charmed state $T_{cc}^{+}$ with a hadronic medium
• $X(3872)$ and $T_{cc}$: structures and productions in heavy ion collisions
• Theoretical investigation of the molecular nature of $D_{s0}^{\ast }(2317)$ and $D_{s1}(2460)$ and the possibility of observing the $D\bar{D}K$ bound state $K_{c\bar{c}}(4180)$ in inclusive $e^{+}{e}^{-}\to c\bar{c}$ collisions
• Magnetic dipole moments of $B_{(s)}^{(\ast )}{B}_{(s)}^{(\ast )}$ states
• Investigating the Isospin Property of $T_{cc}^{+}$ from its Dalitz Plot Distribution
• Evolution of charm-meson ratios in an expanding hadron gas