Pseudoscalar and vector open-charm mesons at finite temperature

Montaña, Glòria; Ramos, À.; Tolós, Laura; Torres-Rincón, Juan M.

doi:10.1103/physrevd.102.096020

Cited by 29 publications

(134 citation statements)

References 102 publications

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“…These can be used into the expression of the thermal self-energy provided in [99,105]. This was done, e.g., in Reference [106] using the amplitudes (58), and more recently in Reference [48] using the amplitudes (60) from [96]. I will provide some details on these calculations.…”

Section: Mixed Chiral Companions: Chiral Perturbation Theorymentioning

confidence: 99%

“…The result labeled "SU(3) UChPT" employs coupled-channel unitarized amplitudes from Reference [96] (therefore, the mass modification contains subleading effects from higher mesonic states like the KK interaction). This case is taken from Reference [48]. With that interaction, at T = 150 MeV the pion mass takes a value of m π ≃ 120 MeV.…”

Section: Mixed Chiral Companions: Chiral Perturbation Theorymentioning

confidence: 99%

“…The difference lies in the fact that this state is not represented with a single pole of the scattering amplitude but with a two-pole structure. I will focus on the charm sector and describe the situation of D mesons at finite temperature, as presented in References [47,48].…”

Section: Chiral Partner As a Double-pole Structure: Open Charm Mesonsmentioning

confidence: 99%

“…I now detail how the states shown in Figure 7 are generated in vacuum and at finite temperature. In References [47,48] we exploited the effective approach of References [131][132][133][134] and extended it to finite temperature using the imaginary time formalism [61]. The effective Lagrangian is kept at leading-order (LO) in heavy-quark mass expansion but at next-to-leading (NLO) order in chiral expansion.…”

Section: Chiral Partner As a Double-pole Structure: Open Charm Mesonsmentioning

confidence: 99%

“…The last case represents a novel situation which was considered at finite temperature for the first time in References [47,48]. In the present review I will address this system and speculate about how the chiral symmetry restoration can be reflected where three different masses evolve with temperature toward the chiral symmetry restoration point.…”

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Degeneracy Patterns of Chiral Companions at Finite Temperature

Torres-Rincón

2021

Symmetry

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Chiral symmetry represents a fundamental concept lying at the core of particle and nuclear physics. Its spontaneous breaking in vacuum can be exploited to distinguish chiral hadronic partners, whose masses differ. In fact, the features of this breaking serve as guiding principles for the construction of effective approaches of QCD at low energies, e.g., the chiral perturbation theory, the linear sigma model, the (Polyakov)–Nambu–Jona-Lasinio model, etc. At high temperatures/densities chiral symmetry can be restored bringing the chiral partners to be nearly degenerated in mass. At vanishing baryochemical potential, such restoration follows a smooth transition, and the chiral companions reach this degeneration above the transition temperature. In this work I review how different realizations of chiral partner degeneracy arise in different effective theories/models of QCD. I distinguish the cases where the chiral states are either fundamental degrees of freedom or (dynamically-generated) composed states. In particular, I discuss the intriguing case in which chiral symmetry restoration involves more than two chiral partners, recently addressed in the literature.

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Section: Mixed Chiral Companions: Chiral Perturbation Theorymentioning

confidence: 99%

Section: Mixed Chiral Companions: Chiral Perturbation Theorymentioning

confidence: 99%

Section: Chiral Partner As a Double-pole Structure: Open Charm Mesonsmentioning

confidence: 99%

Section: Chiral Partner As a Double-pole Structure: Open Charm Mesonsmentioning

confidence: 99%

mentioning

confidence: 95%

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Degeneracy Patterns of Chiral Companions at Finite Temperature

Torres-Rincón

2021

Symmetry

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Thermal energy of a charm-meson molecule in a pion gas

Braaten,

He,

Ingles

et al. 2024

J. High Energ. Phys.

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The thermal corrections to the propagator of a loosely bound charm-meson molecule in a pion gas are calculated to next-to-leading order in the heavy-meson expansion using a zero-range effective field theory. Ultraviolet divergences in the charm-meson-pair self energy are canceled by corrections to the charm-meson-pair contact vertex. Terms that are singular at the charm-meson-pair threshold can be absorbed into thermal corrections to the rest energies and kinetic masses of the charm-meson constituents. The remaining terms reduce to a thermal correction to the binding momentum that is proportional to the pion number density and suppressed by the pion/charm-meson mass ratio. The correction gives a tiny decrease in the binding energy of the charm-meson molecule relative to the charm-meson-pair threshold in the pion gas and a change in its thermal width that is small compared to the thermal widths of the charm-meson constituents. These results are encouraging for the prospects of observing X(3872) and $$ {T}_{cc}^{+}(3875) $$ T cc + 3875 in the expanding hadron gas produced by heavy-ion collisions.

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Triangle singularities waning in Heavy Ion Collisions

Abreu

Llanes-Estrada

2022

Nuclear and Particle Physics Proceedings

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Pseudoscalar and vector open-charm mesons at finite temperature

Cited by 29 publications

References 102 publications

Degeneracy Patterns of Chiral Companions at Finite Temperature

Degeneracy Patterns of Chiral Companions at Finite Temperature

Thermal energy of a charm-meson molecule in a pion gas

Triangle singularities waning in Heavy Ion Collisions

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