Name: XIV Hadron Physics 2018
Start: 2018-03-18T04:00:00-03:00
End: 2018-03-23T14:00:00-03:00
Location: Florianopolis, Brazil

XIV Hadron Physics 2018

from Sunday, March 18, 2018 (4:00 AM) to Friday, March 23, 2018 (2:00 PM)

Monday, March 12, 2018
Tuesday, March 13, 2018
Wednesday, March 14, 2018
Thursday, March 15, 2018
Friday, March 16, 2018
Saturday, March 17, 2018
Sunday, March 18, 2018

3:00 PM Registration
Registration
3:00 PM - 4:00 PM

4:00 PM Coffee break
Coffee break
4:00 PM - 4:30 PM

Monday, March 19, 2018

8:30 AM Opening
Opening
8:30 AM - 8:45 AM

8:45 AM Igor Shovkovy
Igor Shovkovy
8:45 AM - 9:45 AM
9:50 AM An empirical Equation of State for nuclear physics and astrophysics - Debarati Chatterjee (LPC/ENSICAEN)
An empirical Equation of State for nuclear physics and astrophysics
- Debarati Chatterjee (LPC/ENSICAEN)
9:50 AM - 10:10 AM
In order to describe astrophysical phenomena such as glitches, X-ray bursts or oscillations in neutron stars, it is essential to understand the properties of its crust and core as well as their interface. In order to achieve this, it is crucial to develop a unified and consistent scheme to describe both the finite nuclei in the crust and homogeneous matter in the core within the same framework. We employ a recently developed metamodel, based on the density functional theory, in which the Equation-of-State (EoS) of homogeneous matter is described in terms of empirical parameters measured in nuclear experiments. The metamodel is extended to describe non-homogeneous matter in the crust and tested against nuclear observables. This empirical EoS is then employed to study the liquid-phase phase transition that determines the crust-core interface of neutron stars.
10:10 AM QCD probes at LHC - Gustavo Gil Da Silveira (Universidade do Estado do Rio de Janeiro (BR))
QCD probes at LHC
- Gustavo Gil Da Silveira (Universidade do Estado do Rio de Janeiro (BR))
10:10 AM - 10:30 AM
The talk will cover results from all LHC experiments on measurements of particle production in pPb and PbPb, multiplicity dependence of particle production, collectivity studies, elliptic flow, and jet quenching.
10:30 AM Coffee break
Coffee break
10:30 AM - 11:00 AM

11:00 AM Jorge Piekarewicz
Jorge Piekarewicz
11:00 AM - 12:00 PM

12:00 PM Lunch
Lunch
12:00 PM - 1:30 PM
4:00 PM
4:00 PM - 5:00 PM
Contributions

4:00 PM Effects of Hyperons on the Structure of Neutron Stars - José Carlos de Oliveira (Federal University of Roraima)

4:00 PM Effects of the ghost sector in gluon mass dynamics - Clara Figueiredo

4:00 PM Surface tension of quark matter droplets in compact stars - Gabriela Grunfeld

4:00 PM Exclusive photoproduction J/Ψ in peripheral Pb-Pb - M.Beatriz Gay Ducati (UFRGS)

4:00 PM Low energy kaon-hyperon interaction - Marcelo Nogueira (UFSC)

4:00 PM Pasta phases within the QMC model - Guilherme Grams (UFSC)

4:00 PM Heavy quark production in photon-hadron interactions at high energies - Celso Sena (Universidade Federal de Pelotas)

4:00 PM Exclusive vector meson photoproduction with proton dissociation in photon-hadron interactions at the LHC - Diego Spiering (University of São Paulo)

4:00 PM Diffractive double quarkonium production at the LHC - Rafael Palota da Silva (UFPel)

4:00 PM Lepton-rich cold QCD matter - José Jiménez (UFRJ)

4:00 PM Charged pion masses under strong magnetic fields in the NJL model - Norberto Scoccola

4:00 PM In-medium nucleon axial form factor using a light-front nucleon wave function and a quark-meson coupling model - Edson Suisso (INPI)

4:00 PM A study on the solutions of GLR-MQ non-linear evolution equations - Gilvana Coelho Penedo (Universidade Federal de Pelotas)

4:00 PM Double Parton Scattering - Daniel Souza Lima (UFSC)

4:00 PM Parton distribution functions and absorptive corrections - Mateus Pelicer (UFSC)

4:00 PM Sigma resonance parameters from lattice QCD - Raquel Molina Peralta

4:00 PM Many-body forces in magnetic neutron stars - Rosana Gomes (Frankfurt Institute for Advanced Studies)

4:00 PM Study In-Medium K^+ with a Symmetric Vertex in a Light Front Approach - George Yabusaki (ITA - Technological Institute of Aeronautics)

4:00 PM Effects of colour reconnection on resonance production - Renan Acconcia (Universidade Estadual de Campinas - UNICAMP)

4:00 PM Optimized perturbation theory applied to the Nambu-Jona--Lasinio model with symmetry $SU_{f}(3)$} - Juan Macías (USP)

4:00 PM Covariant quark model for the electromagnetic structure of light nucleon resonances - Gilberto Ramalho (Universidade Cruzeiro do Sul)

4:00 PM Short-distance RG-analysis of X(3872) radiative decays - Rafael Luiz (Universidade de São Paulo)

4:00 PM Geometrical scaling description for the exclusive production of vector mesons and DVCS - Felipe Gregoletto Ben (Universidade Federal do Rio Grande do Sul (UFRGS))

4:00 PM Enhanced strange hadron production in high-multiplicity pp collisions with ALICE at the LHC - Rafael Derradi De Souza (University of Campinas UNICAMP (BR))

4:00 PM Exploring the Thermodynamics of Confining Models - Apóllo Silva (UERJ)

4:00 PM $\eta_{c}$ photoproduction at LHC energies - Bruno Moreira (Universidade Federal de Pelotas)

4:00 PM No gapless 2SC color superconducting phase for two flavor quark matter at high density - Ricardo L. Sonego Farias (UFSM)

4:00 PM Leading Pomeron Contributions and the TOTEM Data at 13 TeV - Mateus Broilo (UFRGS)

4:00 PM Effects of mesonic interactions in Neutron Stars core - Leonardo Moreira (UERJ)

4:00 PM BFKL equation with discrete poles in diffractive observables - Cesar Eduardo Krumreich (ufpel)

4:00 PM Temperature effects on nuclear pseudospin symmetry in the Dirac-Hartree-Bogoliubov formalism - MANUEL MALHEIRO (ITA)

4:00 PM On a renormalizable class of gauge fixings for the gauge invariant operator A2min - Duive Maria van Egmond

4:00 PM $J/\psi$ interactions in a hadron gas - Fernando Navarra (Universidade de São Paulo)
4:01 PM Coffee break
Coffee break
4:01 PM - 4:31 PM

5:00 PM Mateusz Ploskon
Mateusz Ploskon
5:00 PM - 6:00 PM
6:00 PM Critical parameters of consistent relativistic mean-field models - Mariana Dutra da Rosa Lourenço (Instituto Tecnológico de Aeronáutica)
Critical parameters of consistent relativistic mean-field models
- Mariana Dutra da Rosa Lourenço (Instituto Tecnológico de Aeronáutica)
6:00 PM - 6:20 PM
The critical parameters related to the liquid-gas phase transition are calculated for 34 relativistic mean-field models, which were shown to satisfy nuclear matter constraints in a comprehensive study involving 263 models. The compressibility factor was calculated and compared with the van der Waals equation of state. The critical temperatures were compared with experimental data and just two classes of models can reach values close to them. A correlation between the critical parameters and the incompressibility was obtained.
6:20 PM Implications of hadronic interactions in the Cosmic Ray and Neutrino Physics - Victor Gonçalves (Universidade Federal de Pelotas)
Implications of hadronic interactions in the Cosmic Ray and Neutrino Physics
- Victor Gonçalves (Universidade Federal de Pelotas)
6:20 PM - 6:40 PM
A comprehensive study of the heavy quark production in ultra high energy cosmic ray interactions in the atmosphere is presented considering that the primary cosmic ray can be either a photon, neutrino or a proton. We show that the contribution of heavy quarks for cosmic ray interactions is in general non-negligible and can be dominant depending of the process considered. Moreover, we present a detailed mapping of the dominant kinematical domains contributing to the prompt atmospheric neutrino flux at high neutrino energies by studying its sensitivity to the cuts on several kinematical variables crucial for charm production in cosmic ray scattering in the atmosphere. We demonstrate that the production of neutrinos with energies larger than $E_{\nu}> 10^7$ GeV is particularly sensitive to the center-of-mass energies larger than the ones at the LHC and to the longitudinal momentum fractions in the projectile $10^{-8} < x < 10^{-5}$, which are not currently under theoretical control. Our results indicate that the precision data on the prompt atmospheric neutrino flux can efficiently constrain the mechanism of heavy quark production and underlying QCD dynamics in kinematical ranges beyond the reach of the current collider measurements.
6:40 PM An effective holographic approach to QCD - Alfonso Ballon Bayona
An effective holographic approach to QCD
- Alfonso Ballon Bayona
6:40 PM - 7:00 PM
I will describe a holographic approach to QCD where conformal symmetry is broken explicitly in the UV by a relevant operator O. This operator maps to a five dimensional scalar field, the dilaton, with a massive term. Implementing also the IR constraint found by Gursoy, Kiritsis and Nitti, an approximate linear glueball spectrum is obtained which is consistent with lattice data. Finally, I will describe the evolution of the model parameters with the conformal dimension of O. This will suggest a map between the QCD anomaly and the trace anomaly of deformed Conformal Field Theories.
Tuesday, March 20, 2018

8:45 AM Jaume Carbonell
Jaume Carbonell
8:45 AM - 9:45 AM
9:50 AM Probing soft QCD with exclusive reactions - Roman Pasechnik (Lund university)
Probing soft QCD with exclusive reactions
- Roman Pasechnik (Lund university)
9:50 AM - 10:10 AM
Exclusive diffractive reactions enable us to efficiently probe soft QCD dynamics in hadronic and nuclear collisions. The color dipole approach provides universal means to evaluate both the inclusive and diffractive particle production observables beyond the concept of QCD factorisation. I will overview the most recent developments in this research field, along with current theoretical and experimental studies.
10:10 AM Effects of strong magnetic fields on quark matter and neutral meson properties within nonlocal chiral quark models - Daniel Gomez Dumm (CONICET - University of La Plata, Argentina)
Effects of strong magnetic fields on quark matter and neutral meson properties within nonlocal chiral quark models
- Daniel Gomez Dumm (CONICET - University of La Plata, Argentina)
10:10 AM - 10:30 AM
We study the behavior of strongly interacting matter under a strong external magnetic field in the context of chiral quark models that include nonlocal interactions. In particular, we analyze the influence of a constant magnetic field on the chiral quark condensates at zero and finite temperature, studying the deconfinement and chiral restoration critical temperatures and discussing the observed "magnetic catalysis" and "inverse magnetic catalysis" effects. In addition, we analyze in this framework the effect of the magnetic field on the properties of $\pi^0$ and $\sigma$ mesons. The predictions of nonlocal chiral quark models are compared with results obtained in lattice QCD.
10:30 AM Coffee break
Coffee break
10:30 AM - 11:00 AM

11:00 AM Mateusz Ploskon
Mateusz Ploskon
11:00 AM - 12:00 PM

12:00 PM Lunch
Lunch
12:00 PM - 1:30 PM
2:20 PM BCS Pairing Gap in the Infrared Limit of the Similarity Renormalization Group - Sergio Szpigel (Universidade Presbiteriana Mackenzie)
BCS Pairing Gap in the Infrared Limit of the Similarity Renormalization Group
- Sergio Szpigel (Universidade Presbiteriana Mackenzie)
2:20 PM - 2:40 PM
Effective interactions have been used to compute the pairing gap for nuclear and neutron matter in several schemes. Most often the BCS approach is based on having the scattering phase-shift as the basic input of the calculation. On the other hand, there is an arbitrariness in this procedure, as there are infinitely many interactions leading to the identical phase-shift. In this work we analyze the impact of phase-shift equivalent interactions within the BCS theory on the $^1S_0$-channel pairing gap for a translational invariant many-fermion system such as nuclear and neutron matter. We solve the BCS pairing gap equation on a finite momentum grid for a toy model separable Gaussian potential in the $^1S_0$-channel explicitly evolved through the Similarity Renormalization Group (SRG) transformation and show that in the on-shell and continuum limits the pairing gap vanishes. For finite size systems the momentum is quantized and the on-shell limit is realized for SRG cutoffs comparable to the momentum resolution. In this case the pairing gap can be computed directly from the scattering phase-shifts by an energy-shift formula $$ \Delta_{nn} (p_F) = \Delta \epsilon_F \delta^{^1S_0}_{nn}(p_F) /\pi \; , $$ where $p_F$ is the Fermi momentum and $\Delta \epsilon_F$ is the level spacing at the Fermi energy. While the momentum grid is usually used as an auxiliary way of solving the BCS pairing gap equation, we show that it actually encodes some relevant physical information, suggesting that in fact finite grids may represent the finite size of the system. For the harmonic oscillator shell model the level spacing at the Fermi energy becomes $\Delta \epsilon_F= \hbar \omega \sim 41 ~ A^{-1/3}~{\rm MeV}$ such that $\Delta_{nn} (p_F) \sim 4 ~ A^{-1/3}~{\rm MeV}$. The comparison with double differences from binding energies of stable nuclei is satisfactory and the discrepancy with the large scale analysis may be attributed to three-body forces.
2:40 PM Dynamics of inhomogeneous chiral condensates - Gastao Krein (Instituto de Fisica Teorica, UNESP)
Dynamics of inhomogeneous chiral condensates
- Gastao Krein (Instituto de Fisica Teorica, UNESP)
2:40 PM - 3:00 PM
We present results of a study of the dynamics of the formation of inhomogeneous phases of the chiral transition transition in QCD. The possibility of the formation of a spatially modulated chiral condensate in the final stages of a heavy-ion collision is investigated assuming a Ginzburg-Landau-Langevin time evolution, using model-motivated free energy functionals. Time scales for the formation of inhomogeneous condensates are contrasted with the expansion rate of the medium, modelled by one-dimensional Bjorken flow.
3:00 PM Integral representation and Minkowski space bound state problems - Tobias Frederico (Instituto Tecnologico de Aeronautica)
Integral representation and Minkowski space bound state problems
- Tobias Frederico (Instituto Tecnologico de Aeronautica)
3:00 PM - 3:20 PM
The bound state Bethe-Salpeter amplitude described by a Nakanishi two-dimensional integral representation has a smooth weight function g, which carries the detailed dynamical information. The Light-front wave function can be derived and is given by a one-dimensional, integral representation with the same weight function g. By using the generalized Stieltjes transform, g can be written in terms of the Light-Front wave function in the complex plane of its arguments. Also a new integral equation for g is derived for a bound state case. We found a prescription for obtaining the kernel N starting with the kernel K of the Bethe-Salpeter equation, and the method is valid for any kernel given by an irreducible Feynman amplitude. We briefly discuss a possible application in hadronic physics, where from the Light-front wave function one obtains the Nakanishi weight function and the associated Bethe-Salpeter amplitude.
3:20 PM Compact stars as a test for modified gravity theories - Manuel Malheiro (ITA)
Compact stars as a test for modified gravity theories
- Manuel Malheiro (ITA)
3:20 PM - 3:40 PM
We investigate the equilibrium configurations of neutron stars, quark stars and white dwarfs in a modified gravity theory, namely, $f(R,T)$ gravity, for which $R$ and $T$ stand for the Ricci scalar and trace of the energy-momentum tensor, respectively. Considering the functional form $f(R,T)=R+2\lambda T$, with $\lambda$ being a constant, we obtain the hydrostatic equilibrium equation for the theory. Some physical properties of compact stars, such as: mass, radius, pressure and energy density, as well as their dependence on the parameter $\lambda$ are derived.
4:00 PM
4:00 PM - 5:00 PM
Contributions

4:00 PM Thermodynamic consistency in magnetized neutron stars - Luiz Lopes (Centro Federal de Educação Tecnológica de Minas Gerais)

4:00 PM Exploring the decay probability of neutron-rich superheavy nuclei - Mrutunjaya Bruyan

4:00 PM Extreme binding energy limit for a fermionic system. - Abigail Castro (ITA)

4:00 PM Rescattering of $J/\psi$ in the hadronic medium : an update using coupled channel unitarized amplitudes - Erich Cavalcanti (CBPF)

4:00 PM Tracing the virtual nd state with Halo/cluster EFT - Renato Higa (University of São Paulo)

4:00 PM Radiative Corrections and Ward-Takahashi-Fradkin identities in GSDKP - Anderson Nogueira (UFABC)

4:00 PM Study on the PDF comparisons for quarkonium + gamma production at the LHC and FCC energies - Mairon Melo Machado (Instituto Federal Farroupilha - Campus São Borja)

4:00 PM Perturbative QCD and Spin-1 - João Pacheco De Melo (Universidade Cruzeiro do Sul)

4:00 PM J/$\psi$ production as a function of event multiplicity in pp collisions at $\sqrt{s}$ = 13 TeV using EMCal-triggered events with ALICE at the LHC - Cristiane Jahnke (Technische Universitaet Muenchen (DE))

4:00 PM Isospin matter and pion stars - Mauricio Hippert Teixeira (Universidade Federal do Rio de Janeiro)

4:00 PM Investigating the exclusive vector meson photoproduction in nuclear collisions at Run 2 LHC energies - Gláuber dos Santos (Universidade Federal de Pelotas)

4:00 PM Phenomenological Analysis of the process DPS - Edgar Paitan

4:00 PM Double quarkonium production in $pp$ collisions at the LHC - Cristiano Brenner Mariotto (Universidade Federal do Rio Grande)

4:00 PM Symmetry deviations in the pasta nuclear structures - Sergio Rocha (Instituto Federal de Santa Catarina)

4:00 PM Magnetized color superconducting quark matter under compact star conditions: Phase structure within the SU(2)f NJL model - Máximo Coppola (CNEA)

4:00 PM Searching for coherent neutrino-nucleus interaction (CENNS) with M\"ossbauer Spectroscopy - Sergio Barbosa Duarte (Brazilian Center of Physics Research) Célio Marques (Instituto Federal de Ciencia e Tecnologia do Espirito Santo)

4:00 PM Corrections to hadron effective couplings due to weak background magnetic field - Fabio Braghin (IF-Federal University of Goias)

4:00 PM Massive gluon exchange potential in KN scattering - Bruna Folador (UFRGS)

4:00 PM Critcal behavior of Walecka model in the presence of magnetic background and boundaries - Elenilson Santos Nery (Universidade Federal da Bahia/Senai-Cimatec)

4:00 PM Central Exclusive Production at LHCb - Luiz Gustavo Silva De Oliveira (Federal University of of Rio de Janeiro (BR))

4:00 PM A numerical simulation of Gravitational Collapse of a Neutron star - Mariana Gomes Pacheco de Sá (Universidade Federal Fluminense)

4:00 PM A comparative study of Neutron Star structure using 3 models: Walecka Model, PAL Model and M.I.T. Bag Model - Fábio Köpp (UFRGS)

4:00 PM Diffractive Production of Quarkonium in p-A Collisions at LHC - Érison Rocha (UFRGS)

4:00 PM Investigating the graviton production in future electron-positron colliders - Magno Machado (Instituto de Fisica UFRGS)

4:00 PM Magnetized neutral mesons at finite temperature - William Rafael Tavares (Universidade Federal de Santa Catarina)

4:00 PM The infrared dynamics of the three-gluon vertex - Arlene Cristina Aguilar

4:00 PM RENORMALIZABILITY OF MASSIVE N = 1 SUPER YANG MILLS THEORY IN LANDAU GAUGE - O. Holanda

4:00 PM Supersymmetry Breaking at Finite Temperature in a Susy Harmonic Oscillator with Interaction. - Célio Marques (Instituto Federal de Ciencia e Tecnologia do Espirito Santo)

4:00 PM An introductory study to white dwarfs - Sílvia Pereira Nunes (Instituto Tecnológico de Aeronáutica - ITA)

4:00 PM Towards a Dalitz Plot Analysis of the decay D+ → π- π+ π+ in LHCb experiment - Fernanda Goncalves Abrantes (Pontifical Catholic University of Rio de Janeiro (BR))

4:00 PM Study of the covariant Wigner function applied to the linear sigma model - Joana Carolina Sodré (Universidade Federal de Santa Catarina)

4:00 PM Description of pp forward elastic scattering at 7 and 8 TeV - Anderson Kendi Kohara (UFRJ-Brazil)

4:00 PM Renormalizability of pure $\mathcal{N}=1$ Super Yang-Mills in the Wess-Zumino gauge in the presence of the local composite operators $A^{2}$ and $\bar{\lambda}\lambda$ - Rodrigo Carmo Terin

4:00 PM Quark-antiquark potentials in nonperturbative models - Carlos Mena (UERJ)

4:00 PM Three-body nonelastic breakup cross-section for weakly bound nuclei - Lucas Souza (Instituto de Física, Universidade de São Paulo)

4:00 PM Scale independence in an asymptotically free theory at finite temperatures - Gabriel Ferrari (UNIVALI)
4:01 PM Coffee break
Coffee break
4:01 PM - 4:31 PM

5:00 PM Igor Shovkovy
Igor Shovkovy
5:00 PM - 6:00 PM
6:00 PM Precision QCD with tau decays - Diogo Boito (Universidade de São Paulo)
Precision QCD with tau decays
- Diogo Boito (Universidade de São Paulo)
6:00 PM - 6:20 PM
Hadronic tau decays remain an excellent laboratory for the study of many aspects of QCD. The inclusive decays have been used as a source of precise information about $\alpha_s$ for the past 20 years. In the search for higher precision, partially triggered by the LHC, several aspects of this determination have been scrutinised in the recent past. The issues that arise are often of a fundamental nature. We will discuss problems pertaining to perturbative and non-perturbative QCD, with emphasis on renormalon singularities, scheme variations, and a novel approach to the violations of quark-hadron duality. The present status of $\alpha_s$ from tau decays and perspectives for the future will be summarised.
7:20 PM Conference dinner
Conference dinner
7:20 PM - 8:50 PM
8:50 PM Celebration session - 30th anniversary of the International Workshop on Hadron Physics - Erasmo Ferreira (Universidade Federal do Rio de Janeiro) Takeshi Kodama (Universidade Federal do Rio de Janeiro)
Celebration session - 30th anniversary of the International Workshop on Hadron Physics
- Erasmo Ferreira (Universidade Federal do Rio de Janeiro)
- Takeshi Kodama (Universidade Federal do Rio de Janeiro)
8:50 PM - 9:50 PM
Wednesday, March 21, 2018

8:45 AM Jorge Piekarewicz
Jorge Piekarewicz
8:45 AM - 9:45 AM
9:50 AM LHC measurements of QCD - Arthur Moraes (CBPF - Brazilian Center for Physics Research (BR))
LHC measurements of QCD
- Arthur Moraes (CBPF - Brazilian Center for Physics Research (BR))
9:50 AM - 10:10 AM
The talk will cover results from all LHC experiments (CMS, ATLAS and LHCb) on Z, photon and jet production in pPb and PbPb ion collisions, Heavy quark production Jet substructure and fragmentation, Double parton scattering.
10:10 AM A quasi-particle equation of state with a phenomenological critical point for heavy-ion nuclear collisions - Wei-Liang Qian (University of Sao Paulo)
A quasi-particle equation of state with a phenomenological critical point for heavy-ion nuclear collisions
- Wei-Liang Qian (University of Sao Paulo)
10:10 AM - 10:30 AM
In this work, we propose a quasi-particle equation of state with a phenomenological critical point. The QGP phase of the model is determined by a quasi-particle model fitting to the Lattice QCD data. At zero baryon density, the model is smoothly connected to the hadronic resonance model. A phenomenological critical point is implemented in such a way when the baryon density increases and passes a critical value, the phase transition turns from a crossover into a first order phase transition. We apply the model to the study of relativistic heavy-ion collisions numerically by using a hydrodynamic model. The impact of the existence of the phenomenological critical point is addressed.
10:30 AM Coffee break
Coffee break
10:30 AM - 11:00 AM

11:00 AM Igor Shovkovy
Igor Shovkovy
11:00 AM - 12:00 PM

12:00 PM Lunch
Lunch
12:00 PM - 1:30 PM

1:30 PM Free afternoon
Free afternoon
1:30 PM - 7:00 PM
Thursday, March 22, 2018

8:45 AM Mateusz Ploskon
Mateusz Ploskon
8:45 AM - 9:45 AM
9:50 AM A first survey of the ghost-gluon vertex in the Gribov-Zwanziger framework - Bruno Mintz
A first survey of the ghost-gluon vertex in the Gribov-Zwanziger framework
- Bruno Mintz
9:50 AM - 10:10 AM
In order to have a proper definition of a quantum nonabelian gauge theory, such as QCD, one needs to have a well-defined generating functional. In the perturbative regime at high energies, this can be achieved through the well-known Faddeev-Popov quantization procedure. For energy scales in which the coupling of the strong force becomes sufficiently high, the perturbative approach may display some inconsistencies. One such problem is the so-called Gribov problem: in a gauge fixed theory, the ghost fields acquire a pole at finite (euclidean) momentum. Equivalently, the determinant of the Faddeev-Popov operator vanishes and the generating functional of the theory becomes void. In order to correct this problem (at least partially), Gribov suggested to restrict the functional integration of gauge fields to a subset of the field space, which is now called the Gribov region. As this restriction of the gauge fields to the Gribov region is taken into account, it turns out that the resulting gauge field propagators display a nontrivial infrared behavior, being very close to the ones observed in lattice gauge field theory simulations. In this work, we explore for the first time a higher correlation function in the presence of the Gribov horizon: the ghost-anti-ghost-gluon interaction vertex, at one-loop level. Our analytical results (within the so-called Refined Gribov Zwanziger theory) are fairly compatible with lattice YM simulations, as well as with solutions from the Schwinger-Dyson equations. This is an indication that the RGZ framework can provide a reasonable description in the infrared not only of gauge field propagators, but also of higher correlation functions, such as interaction vertices.
10:10 AM Quark mass generation with Schwinger-Dyson equations - Arlene Cristina Aguilar
Quark mass generation with Schwinger-Dyson equations
- Arlene Cristina Aguilar
10:10 AM - 10:30 AM
In this talk, I will present some the current efforts to understand the phenomenon of chiral symmetry breaking and the generation of a dynamical quark mass. To do that, we will use the framework of the Schwinger-Dyson equations. We will solve the coupled system of integral equations formed by the quark propagator and the complete non-transverse structure of the quark-gluon vertex, which is formed by four independent form factors. Particular attention is dedicated to guarantee the correct renormalization group behaviour of the quark dynamical mass and in the extraction of the phenomenological parameters such as pion constant decay.
10:30 AM Coffee break
Coffee break
10:30 AM - 11:00 AM

11:00 AM Jaume Carbonell
Jaume Carbonell
11:00 AM - 12:00 PM

12:00 PM Lunch
Lunch
12:00 PM - 1:30 PM

4:30 PM Coffee break
Coffee break
4:30 PM - 5:00 PM

5:00 PM Poster Prizes & General Assembly
Poster Prizes & General Assembly
5:00 PM - 7:00 PM
Friday, March 23, 2018

8:45 AM Jorge Piekarewicz
Jorge Piekarewicz
8:45 AM - 9:45 AM
9:50 AM Confinement and deconfinement from lattice simulations - Tereza Mendes
Confinement and deconfinement from lattice simulations
- Tereza Mendes
9:50 AM - 10:10 AM
We review methods and results for the study of color confinement in Yang-Mills theories using numerical simulations of infrared propagators in the lattice formulation. We discuss recent progress in considering finite-volume effects, different gauges and the finite-temperature case.
10:10 AM Polarised Drell-Yan results from COMPASS - Celso Franco (LIP)
Polarised Drell-Yan results from COMPASS
- Celso Franco (LIP)
10:10 AM - 10:30 AM
The COMPASS experiment at CERN is one of the leading experiments studying the nucleon spin structure. Until 2012 the Parton Distribution Functions and the Transverse Momentum Dependent Parton Distribution Functions (TMDs) were extensively studied at COMPASS using Semi-Inclusive Deep Inelastic Scattering measurements. In 2015, the Drell-Yan measurements with a negative pion beam interacting with a transversely polarized ammonia target have started and will be continued through 2018. The goal is to access the TMDs of both pions and protons without any prior knowledge about fragmentation functions. Since the Drell-Yan data cover the same kinematic region of the semi-inclusive data, COMPASS has the unique opportunity to test the sign change of the Sivers TMD as predicted by QCD. In this talk the first measurement of spin dependent azimuthal asymmetries in the pion induced Drell-Yan process will be presented. These asymmetries, which are related to the convolution of pion and nucleon TMDs, are extracted from pairs of oppositely charged muons with invariant masses between 4.3 GeV$c^2$ and 8.5 GeV$c^2$
10:30 AM Coffee break
Coffee break
10:30 AM - 11:00 AM

11:00 AM Jaume Carbonell
Jaume Carbonell
11:00 AM - 12:00 PM

12:00 PM Lunch / Departure
Lunch / Departure
12:00 PM - 1:30 PM