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Quark-hadron matter at finite temperature and density is studied using a two-flavor, color SU(2) (P)NJL model. The hadronic effective Lagrangian, derived by bosonization of the quark fields and renormalized using the Eguchi method, emerges…

Nuclear Theory · Physics 2014-01-16 Shotaro Imai , Hiroshi Toki , Wolfram Weise

In this work, we present an updated study about the interactions of quarkonia with surrounding hadronic medium. The meson-meson interactions are described with a chiral effective Lagrangian within the framework of unitarized coupled channel…

High Energy Physics - Phenomenology · Physics 2021-05-28 Luciano M. Abreu , Hildeson P. L. Vieira

The charge asymmetry in top quark production at hadron colliders is sensitive to beyond-the-Standard-Model four-fermion interactions. In this study we compare the sensitivity of cross-section and charge asymmetry measurements to effective…

High Energy Physics - Experiment · Physics 2015-12-24 Martin Perello Rosello , Marcel Vos

The quark-meson coupling (QMC) model, which has been successfully used to describe the properties of both infinite nuclear matter and finite nuclei, is applied to a systematic study of $\Lambda, \Sigma$ and $\Xi$ hypernuclei. Assumptions…

Nuclear Theory · Physics 2010-02-17 K. Tsushima , K. Saito , J. Haidenbauer , A. W. Thomas

We construct an effective Lagrangian for low energy hadronic interactions through an infinite expansion in inverse powers of the low energy cutoff $\Lambda_\chi$ of all possible chiral invariant non-renormalizable interactions between…

High Energy Physics - Phenomenology · Physics 2009-10-28 E. Pallante , R. Petronzio

We study time correlation functions of operators representing heavy-light K-Lambda like systems at various relative distances r. The heavy quarks, one in each hadron, are treated as static. An anisotropic and asymmetric lattice is used with…

High Energy Physics - Lattice · Physics 2007-05-23 M. S. Cook , H. R. Fiebig

The strong interactions of the negative-parity heavy mesons with $\rho$ meson may be described consistently in the context of an effective lagrangian, which is invariant under isospin SU(2) transformation. Four coupling constants…

High Energy Physics - Phenomenology · Physics 2008-11-26 Zuo-Hong Li , Wei Liu , Hai-Yan Liu

Smooth transitions from hadronic matter to hot and dense matter of quantum chromodynamics accompany continuous transformations in effective degrees of freedom. The microscopic descriptions should include relativistic quarks interacting…

High Energy Physics - Phenomenology · Physics 2022-08-30 Toru Kojo , Daiki Suenaga

We study the equation of state of hot and dense hadronic matter using an extended Chiral Mean Field (CMF) model framework where the addition is the inclusion of interactions of thermally excited mesons. This is implemented by calculating…

In this work the investigation of hadronic structures with the help of the harmonic quarks is prolonged. The harmonic quark model is good at describing the meson structures and the baryon excitations to resonances, in particular…

High Energy Physics - Phenomenology · Physics 2007-05-23 Oleg A. Teplov

We study the meson-meson and meson-baryon interactions in lattice QCD. The simulation is performed on 20^3 * 24 lattice at \beta=5.7 using Wilson gauge action and Wilson fermion at the quenched level. By adopting one static quark for each…

High Energy Physics - Lattice · Physics 2009-11-11 Takumi Doi , Toru T. Takahashi , Hideo Suganuma

A potential between mesons is extracted from 4-point functions within lattice gauge theory taking 2+1 dimensional QED as an example. This theory possesses confinement and dynamical fermions. The resulting meson-meson potential has a…

High Energy Physics - Lattice · Physics 2009-10-28 H. R. Fiebig , O. Linsuain , H. Markum , K. Rabitsch

Hadronic correlation functions at finite temperature in QCD, with four flavours of dynamical quarks, have been analyzed both above and below the chiral symmetry restoration temperature. We have used both point and extended sources for…

High Energy Physics - Lattice · Physics 2009-10-22 G. Boyd , Sourendu Gupta , F. Karsch , E. Laermann

In order to study the fate of mesons in thermal QCD at finite baryon chemical potential, we consider light mesonic correlation functions using the Taylor expansion to ${\cal O}((\mu/T)^2)$, in both the hadronic and quark-gluon plasma…

High Energy Physics - Lattice · Physics 2020-01-14 G. Aarts , C. Allton , D. De Boni , J. Glesaaen , S. Hands , B. Jäger , A. A. Nikolaev , J. -I. Skullerud , L. -K. Wu

It has long been known that QCD undergoes a deconfining phase transition at high temperature. One of the consequent features of this new, quark-gluon phase is that hadrons become unbounded. In this talk meson correlation functions at…

High Energy Physics - Lattice · Physics 2015-03-17 Gert Aarts , Chris Allton , Justin Foley , Simon Hands , Seyong Kim

The decays and mixing of $K$ mesons are remarkably sensitive to the weak interactions of quarks and leptons at high energies. They provide important tests of the standard model at both first and second order in the Fermi constant $G_F$ and…

The two-particle correlation technique applied to $K^-\Lambda$ pairs in pp collisions at LHC recently provided the most precise data on the strangeness $S=-2$ meson-baryon interaction. In this letter, we use for the first time femtoscopic…

High Energy Physics - Phenomenology · Physics 2023-12-21 V. Mantovani Sarti , A. Feijoo , I. Vidaña , A. Ramos , F. Giacosa , T. Hyodo , Y. Kamiya

A method for the extraction of an effective meson-meson potential from Green functions, which can be obtained from a lattice simulation, is presented. Simulations are carried out for compact QED and QCD in four dimensions using the quenched…

High Energy Physics - Lattice · Physics 2009-10-28 H. R. Fiebig , H. Markum , A. Mihály , K. Rabitsch , W. Sakuler , C. Starkjohann

$\Lambda$-deuteron two-particle momentum correlation functions, to be measured in high-energy heavy-ion collisions, are investigated. In particular, the question is addressed whether such correlations can serve as an additional and…

Nuclear Theory · Physics 2020-09-09 J. Haidenbauer

Hadronic interactions are discussed within the context of the constituent quark model. The "Quark Born Diagram" methodology is outlined, extensive applications to meson-meson and meson-baryon interactions are discussed, and general features…

High Energy Physics - Phenomenology · Physics 2007-05-23 Eric S. Swanson