F. S. Navarra
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View article: Novel aspects of particle production in ultra-peripheral collisions
Novel aspects of particle production in ultra-peripheral collisions Open
One of the hot topics in hadron physics is the study of the new exotic charmonium states and the determination of their internal structure. Another important topic is the study of the magnetic field produced in relativistic heavy-ion colli…
View article: Updating the predictions for <i>X</i>(3872) and <i>ψ</i>(2S) production in heavy ion collisions to be measured by ALICE
Updating the predictions for <i>X</i>(3872) and <i>ψ</i>(2S) production in heavy ion collisions to be measured by ALICE Open
We update previous predictions for the yield ratio R = N X(3872) = N ψ (2S) of particles produced at the LHC. We focus on the effects of the hadron gas phase on the abundance of these particles. We use a transport model to compute the mult…
View article: Production of $η_b$ in ultra-peripheral $Pb Pb$ collisions
Production of $η_b$ in ultra-peripheral $Pb Pb$ collisions Open
Very recently, the two-photon decay width of the $η_b$ meson was computed with lattice QCD methods. This decay has not yet been measured. The knowledge of this width allows for the calculation of the $η_b$ production cross section through …
View article: Studying the nature of the lightest charmed axial mesons via femtoscopy
Studying the nature of the lightest charmed axial mesons via femtoscopy Open
In this work we discuss how femtoscopic analysis can shed light on the nature of the two lightest axial charmed mesons, denominated as $D_1(2430)$ and $D_1(2420)$, whose masses are similar but widths are different. Their properties are rea…
View article: Novel aspects of particle production in ultra-peripheral collisions
Novel aspects of particle production in ultra-peripheral collisions Open
One of the hot topics in hadron physics is the study of the new exotic charmonium states and the determination of their internal structure. Another important topic is the search for effects of the magnetic field created in high energy nucl…
View article: How the hadron gas affects <i>X</i>(3872) and <i>ψ</i>(2<i>S</i>) production in heavy ion collisions
How the hadron gas affects <i>X</i>(3872) and <i>ψ</i>(2<i>S</i>) production in heavy ion collisions Open
The X (3872) to ψ(2 S ) yield ratio ( N X / N ψ(2 S ) ) has been recently measured in pp , pPb and PbPb collisions by the LHCb and CMS Collaborations at the LHC. It was found that this ratio grows with the system size and this growth was a…
View article: Can femtoscopic correlation function shed light on the nature of the lightest, charm, axial mesons?
Can femtoscopic correlation function shed light on the nature of the lightest, charm, axial mesons? Open
We present a coupled channel treatment of meson-meson dynamics, for systems with spin-parity $1^+$, and determine the corresponding amplitudes by solving the Bethe-Salpeter equations, which lead to the generation of two axial resonances wh…
View article: How to measure the magnetic field in relativistic heavy-ion collisions
How to measure the magnetic field in relativistic heavy-ion collisions Open
The intense magnetic field created in heavy-ion collisions has often been calculated with classical electrodynamics. This description is thought to be accurate if the occupation number of every field mode is high enough. However, this hypo…
View article: The origin of the K <sup>∗</sup> suppression at the LHC
The origin of the K <sup>∗</sup> suppression at the LHC Open
When relativistic heavy ions collide, a plasma of quarks and gluons is created. It expands, cools down and eventually reaches the hadronization temperature, when a hadron gas phase is formed. In this phase, K ∗ and K can interact with ligh…
View article: Multiplicity moments at the LHC: how bad is the negative binomial distribution ?
Multiplicity moments at the LHC: how bad is the negative binomial distribution ? Open
In this work, we compare the first C-moments of the multiplicity distributions recently measured in proton-proton collisions at the LHC with the predictions of the Bialas-Praszalowicz model. In this model the multiplicity distribution is g…
View article: The tension between radius and deformability in quark stars
The tension between radius and deformability in quark stars Open
In a recent work, we applied a QCD-based EOS to the study of the stellar structure of self-bound strange stars, obtaining sequences with maximum masses larger than two solar masses and radii ranging from 8 to 12 Km. We have also compared o…
View article: System size dependence of the K∗/K ratio at LHC energies
System size dependence of the K∗/K ratio at LHC energies Open
In the beginning of high energy heavy ion collisions, a deconfined phase of quarks and gluons (QGP) is formed. After the QGP, there is a hadron gas (HG) phase, which evolves until the final fluid freeze-out. The study of hadron resonances,…
View article: A Simple Approach to the Charmonium Spectrum
A Simple Approach to the Charmonium Spectrum Open
In this work we derive an analytical mass formula for the charmonium states. Starting from the two-body Hamiltonian with the Cornell potential, we use a version of the uncertainty relation (which depends on the $n$ and $l$ quantum numbers)…
View article: Absorptive corrections in leading neutron production
Absorptive corrections in leading neutron production Open
Leading neutron (LN) production in $ep$ collisions at high energies is investigated using the color dipole formalism and taking into account saturation effects. We update the treatment of absorptive effects and estimate the impact of these…
View article: Multiplicity of the doubly charmed state $T_{cc} ^+$ in heavy-ion collisions
Multiplicity of the doubly charmed state $T_{cc} ^+$ in heavy-ion collisions Open
We study the evolution of the doubly charmed state $T_{cc}^+$ in a hot hadron gas produced in the late stage of heavy-ion collisions. We use effective Lagrangians to calculate the thermally averaged cross sections of $T_{cc}^+$ production …
View article: Tidal deformability of quark stars with repulsive interactions
Tidal deformability of quark stars with repulsive interactions Open
In an early work, we applied a QCD-based equation of state to the study of the stellar structure of self-bound strange stars, obtaining sequences with maximum masses larger than two solar masses and radii ranging from 8 to 12 Km. In this w…
View article: Magnetic field in relativistic heavy-ion collisions: Testing the classical approximation
Magnetic field in relativistic heavy-ion collisions: Testing the classical approximation Open
It is believed that in non-central relativistic heavy ion collisions a very\nstrong magnetic field is formed. There are several studies of the effects of\nthis field, where $\\vec{B}$ is calculated with the expressions of classical\nelectr…
View article: Production of exotic charmonium in heavy ion collisions
Production of exotic charmonium in heavy ion collisions Open
We present a short review of exotic charmonium production in heavy ion collisions. We discuss predictions for the production cross section of several of these states in ultra-peripheral Pb-Pb collisions at the LHC. The experimental study o…
View article: The low energy physics of quarkonium suppression in heavy ion collisions
The low energy physics of quarkonium suppression in heavy ion collisions Open
In the late stage of relativistic heavy ion collisions there is a hadron gas phase, where particles interact at energies of the order of the temperature, i.e., ≃ 100 − 150 MeV. We discuss heavy quarkonium production and dissociation in thi…
View article: The QCD Kondo phase in quark stars
The QCD Kondo phase in quark stars Open
We study light (u, d) quark matter with charm impurities. These impurities are added to the Lagrangian density. We derive the equation of state (EOS) of this kind of quark matter, which contains a Kondo phase. We explore this EOS and study…
View article: Looking for KdV solitons in a cold and magnetized quark gluon plasma
Looking for KdV solitons in a cold and magnetized quark gluon plasma Open
We study weakly nonlinear wave perturbations propagating in a cold nonrelativistic and magnetized ideal quark-gluon plasma. We show that such perturbations can be described by the Ostrovsky equation. The derivation of this equation is pres…
View article: Exclusive vector meson photoproduction at Run 2 LHC energies: Color dipole predictions
Exclusive vector meson photoproduction at Run 2 LHC energies: Color dipole predictions Open
The theoretical uncertainty on the Color Dipole predictions for the $\\rho$ and $J/\\Psi$ photoproduction in nucleus-nucleus collisions at Run 2 LHC energies is investigated. The results for rapidity distributions and total cross sections …
View article: Supersymmetry in the double-heavy hadronic spectrum
Supersymmetry in the double-heavy hadronic spectrum Open
Relativistic light-front bound-state equations for double-heavy mesons,\nbaryons and tetraquarks are constructed in the framework of supersymmetric\nlight front holographic QCD. Although heavy quark masses strongly break\nconformal symmetr…
View article: Heavy quark production in<i>pA</i>collisions: The double parton scattering contribution
Heavy quark production in<i>pA</i>collisions: The double parton scattering contribution Open
In this paper, we estimate the double parton scattering (DPS) contribution for the heavy quark production in pA collisions at the LHC. The cross-sections for the charm and bottom production are estimated using the dipole approach, taking i…
View article: Intrinsic charm contribution to the prompt atmospheric neutrino flux
Intrinsic charm contribution to the prompt atmospheric neutrino flux Open
In this work we investigate the impact of intrinsic charm on the prompt\natmospheric neutrino flux. The color dipole approach to heavy quark production\nis generalized to include the contribution of processes initiated by charm\nquarks. Th…