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Stefano Lionetti (Istituto Nazionale di Fisica Nucleare)29/06/2022, 15:00Poster
Over the last few years a triangular equivalence relation was discovered connecting three apparently different topics: asymptotic symmetries, soft theorems and memory effects. This equivalence relation can be drawn potentially in every theory with a massless particle, for example in QED, QCD, SUSY, gravity and string theory.
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I will review the triangular equivalence in the context of gravity... -
29/06/2022, 15:01Poster
By exploring Heavy Quark Effective theory, We predicted masses and decay widths for n=2 D-wave charm mesons. We use available data for bottom mesons and apply heavy quark symmetry to predict masses and decay widths in terms of coupling constants. These predictions may helpful in upcoming experiments at LHCb BESIII, PANDA to look into these states.
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Filippo Contino29/06/2022, 15:02Poster
In the search for physics beyond the Standard Model, in recent years interest has grown towards models with classical scale invariance. When the radiative corrections are calculated within the framework of dimensional regularization, the scale invariance at the quantum level is only logarithmically broken. The (small) values of the particle masses are then generated through a Coleman-Weinberg...
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29/06/2022, 15:03Poster
We demonstrate high prediction accuracy of three important properties that determine the initial geometry of the heavy-ion collision (HIC) experiments by using supervised Machine Learning
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(ML) methods. These properties are the impact parameter, the eccentricity, and the participant
eccentricity. Though ML techniques have been used previously to determine the impact parameter
of these... -
29/06/2022, 15:04Poster
Event shape observables such as transverse spherocity($S_{0}$) have evolved as a
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powerful tool to separate soft and hard contributions in an event in small collision
systems. To understand this phenomenon, we used two-particle differential-number
correlation functions, $R_{2}$, and transverse momentum correlation functions, $P_{2}$, of
charged particles produced in pp collisions at the LHC... -
Arianna Grisel Torres Ramos (Istituto Nazionale di Fisica Nucleare)29/06/2022, 15:05Poster
A pillar of the ALICE upgrade program is the improvement of the Inner Tracking System (ITS2)
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performance by the replacement of its three innermost layers during the next/third long shutdown of
the LHC (LS3) . The proposal is based on a vertex detector consisting of three cylindrical layers
composed by curved wafer-scale silicon sensors. The new detector will present a significant
reduction... -
Andrea Guiggiani (Università degli studi di Firenze)29/06/2022, 15:06Poster
Bubble nucleation is a key ingredient in a cosmological first order phase transition. The non-equilibrium bubble dynamics and the properties of the transition are controlled by the density perturbations in the hot plasma. We present, for the first time, the full solution of the linearized Boltzmann equation. Our approach, differently from the traditional one based on the fluid approximation,...
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29/06/2022, 15:07Poster
Two-particle normalized cumulants of particle number correlations ($R_{2}$) and transverse momentum correlations ($P_{2}$) measured as a function of relative pseudorapidity and azimuthal angle difference $(\Delta\eta, \Delta\varphi)$ provide key information about particle production mechanism, diffusivity, charge and momentum conservation in high-energy collisions. To complement the recent...
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29/06/2022, 15:08Poster
Energetic quarks liberated from hadrons in nuclear deep-inelastic scattering propagate through the nuclear medium, interacting with it via several processes. These include quark energy loss through medium-stimulated gluon bremsstrahlung and intra-nuclear interactions of forming hadrons. One manifestation of these interactions is enhanced emission of low-energy charged particles, referred to...
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29/06/2022, 15:09Poster
We present first results on the resummation of Next-to-Soft Virtual (NSV) logarithms for the threshold production of pseudoscalar Higgs boson through gluon fusion at the LHC. These results are presented after resumming the NSV logarithms of the kind ${\log}^{i}(1-z)$ to $\overline{\text{NNLL}}$ accuracy and matching them systematically to the fixed order NNLO cross-sections. These results are...
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Mr Savvas Pitsinigkos (University of Southampton)29/06/2022, 15:10Poster
Cold and dense matter can be explored in a systematic way both in the high-density (perturbative QCD) and low-density (Chiral EFT) regime. However, the path connecting them is yet to be discovered. As a result, these descriptions are usually extrapolated into the intermediate density regime and then connected at some transition point. In this work I will present a model that has features of...
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Pooja - (IIT Goa)29/06/2022, 15:11Poster
Heavy quarks are considered potential probes of the QCD matter produced in high-energy heavy-ion collisions. In the pre-equilibrium stage of relativistic heavy-ion collisions, strong quasi-classical gluon fields emerge at about $\tau_0=0.08$ fm/c which evolves according to the classical Yang-Mills (CYM) equations. These set of classical fields is known as Glasma. We study the diffusion of the...
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29/06/2022, 15:12Poster
Predicition of tetraquark nad pentaquark masses have been done using effective theories and also there classification using different possible symmetries are done.
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Francesco Loparco (Istituto Nazionale di Fisica Nucleare)29/06/2022, 15:13Poster
Inclusive semileptonic decays of beauty baryons are studied using the heavy quark expansion to order 1/mb^3 at leading order in α_{s}
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The case of a polarized decaying baryon is examined, with reference to Λ_b.
The decays are studied in SM and in the extension based on the full set of D=6 semileptonic operators. -
29/06/2022, 15:14Poster
By systematic analysis, the contributions to two- and three-point Green functions that involve operators interpolating multiquark hadrons may be unambiguously and disjointly separated into those that may support a given multiquark and those that definitely do not. Upon evaluation of any such Green function within the framework of QCD sum rules, the rigorously identifiable latter contributions...
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29/06/2022, 15:15Poster
Within quantum field theory, an adequate formalism for the description of (two-particle) bound states, such as ordinary mesons, is provided by the Poincaré-covariant homogeneous Bethe‒Salpeter equation. From this — frequently rather involved — framework, however, it is not always quite easy to extract predictions. In view of this, a coarse idea of the bound-state spectrum to be expected may be...
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Mario Cretì (Istituto Nazionale di Fisica Nucleare)29/06/2022, 15:16Poster
Topology enters in quantum in quantum field theory in multiple forms: one of the
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most important being the identification of the $\theta$ vacuum in QCD.
A very relevant aspect of this connection is through the phenomenon of
the anomalies, both chiral and conformal.
It has been realized recently that a class of materials, comprising topological insulators and Weyl semimetals,
exhibit the... -
Riccardo Tommasi (INFN-Lecce)29/06/2022, 15:17Poster
Conformal symmetry has important consequences for strong interactions at short distances and provides powerful tools for practical calculations. Even if the Lagrangians of Quantum Chromodynamics (QCD) and Electrodynamics (QED) are invariant under conformal transformations, this symmetry is broken by quantum corrections. The signature of the symmetry breaking is encoded in the presence of...
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Nicola Losacco (Istituto Nazionale di Fisica Nucleare)29/06/2022, 15:18Poster
An holographic approach is applied to study chaotic behaviour of a strongly coupled Q Qbar pair in general thermal background. We consider two different backgrounds, one with finite temperature and baryon density, and one with finite temperature and constant magnetic field along a fixed direction. The results allow us to understand the chaotic dynamics dependence on the parameters of the...
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Martin Rodrigo Novoa Brunet (Istituto Nazionale di Fisica Nucleare)29/06/2022, 15:19Poster
We analyze the form factors that parametrize the B_c to J/psi, eta_c matrix elements of the operators in the effective b to c semileptonic Hamiltonian. We consider an expansion in nonrelativistic QCD, classifying the heavy quark spin symmetry breaking terms and expressing the form factors in terms of universal functions in a selected kinematical range. Using as an input the lattice QCD...
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Shyam Kumar (Istituto Nazionale di Fisica Nucleare)29/06/2022, 15:20Poster
The proposed Electron-Ion Collider (EIC) at the Brookhaven National Laboratory will study the collisions of polarized electrons with polarized protons and ions. The measurement of scattered electrons and charged particles will provide the main ingredients to achieve the physics objectives given below.
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Distribution of sea quarks and gluons, and their spins inside the nucleon, basically 3D... -
Spyridon Margetis (Kent State University)29/06/2022, 15:21Poster
Directed flow of particles is an important feature seen in heavy-ion collisions and is a sensitive probe of the equation of state (EoS) of the matter produced in the collisions. Model calculations have also predicted that directed flow could be a sensitive probe of the softening of EOS associated with a first order phase transition. Directed flow of protons and anti-protons are of particular...
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