Conveners
Seminar (1,2 week): 1st sesseion
- Atsushi Hosaka (RCNP, Osaka University)
Seminar (1,2 week)
- Shigehiro Yasui (Nishogakusha University)
Seminar (1,2 week)
- Shigehiro Yasui (Nishogakusha University)
Seminar (1,2 week)
- Qian Wang (South China Normal University)
Seminar (1,2 week)
- Qian Wang (South China Normal University)
Seminar (1,2 week)
- Xu Feng (Peking University)
Seminar (1,2 week)
- Xu Feng (Peking University)
Seminar (1,2 week)
- Tetsuo Hatsuda (RIKEN iTHEMS)
Seminar (1,2 week)
- Yuya Tanizaki (YITP, Kyoto)
Seminar (1,2 week)
- Jeremy Green (DESY)
Seminar (1,2 week)
- Koji Miwa (Tohoku University)
Seminar (1,2 week)
- Koji Miwa (Tohoku University)
Seminar (1,2 week)
- Koichi Murase (Tokyo Metropolitan University)
Seminar (1,2 week)
- JAMES LATTIMER (Stony Brook University)
Seminar (1,2 week)
- Wolfram Weise (Technical University of Munich)
Seminar (1,2 week)
- Hyun-Chul Kim (Inha University)
Recently the productions of exotic hadrons are interested not only for pp and ee collisions, but also for relativistic heavy ion collisions. The latter can be regarded as the factory for producing exotic hadrons from light to heavy flavors. Especially, the inner structures of exotic hadrons can be sensitive to the production process, and more information may be obtained by researching exotic...
The Coulomb gauge description of QCD is reviewed. How models can be built in this approach is described and example applications to mesons, glueballs, hybrids, hybrid decays, and hybrid mixing are discussed.
We study the nature of the hidden charm pentaquarks, i.e. the Pc(4312), Pc(4440) and Pc(4457), with a neural network approach in pionless effective field theory. In this framework, the normal fitting approach cannot distinguish the quantum numbers of the Pc(4440) and Pc(4457). In contrast to that, the neural network-based approach can discriminate them. In addition, we also illustrate the role...
I will discuss a lattice QCD calculation of the nucleon electric polarizabilities at the physical pion mass. Our findings reveal the substantial contributions of the Nπ states to these polarizabilities. Without considering these contributions, the lattice results fall significantly below the experimental values, consistent with previous lattice studies. This observation has motivated us to...
The application of the chiral Lagrangian to results from Lattice QCD simulations played an important role in the early days of the field when it was impossible to generate ensembles at the physical pion mass. With the tremendous improvement of hardware and simulation technologies it is now possible and rather wide spread to do simulations for selected physical quantities at sufficiently small...
The baryon masses on CLS ensembles are used to determine the LEC that characterize QCD in the flavor-SU(3) limit with vanishing up, down, and strange quark masses.[1,2]
Here we reevaluate some of the baryon masses on flavor-symmetric ensembles with much-improved statistical precision, in particular for the decuplet states. These additional results then lead to a more significant chiral...
In this talk, I will first present the $D^*D$ scattering results obtained using $(2+1)$-flavor lattice QCD simulations with a nearly physical pion mass of $m_\pi=146$ MeV, which is crucial for understanding the first doubly charmed tetraquark $T^+_{cc}$. Next, I will discuss the left-hand cut singularity, which has been recently pointed out to be relevant for analyzing $T^+_{cc}$. Special...
The validity range of the time-honored effective range expansion can be very limited due to the presence of a left-hand cut close to the two-particle threshold. Such a left-hand cut arises in the two-particle interaction involving a light particle exchange with a mass small or slightly heavier than the mass difference of the two particles, a scenario encountered in a wide range of systems....
The two-particle momentum correlation function from high-energy nuclear collisions is beginning to be used to study hadron-hadron interaction. Because this observable is sensitive to the low-energy interaction, it is useful to study the nature of the near-threshold resonances and the underlying mechanism of the interaction. The meson-baryon and baryon-baryon interaction in strangeness sector...
Recently, femtoscopy in high-energy heavy-ion collisions has been gathering attention as a new approach to hadron-hadron interaction, and two-particle momentum correlation is widely measured in experiments [1]. Existing studies have mainly assumed the s-wave interaction, where the contributions from p-wave and d-wave have been neglected for simplicity. However, the correlation function gets...
Research on hypernuclei plays an essential role in answering how the hierarchy of nuclei is constructed from quarks. We are going to review the recent achievements in hypernuclear programs in J-PARC. One of the recent achievements is the realization of an accurate hyperon-nucleon scattering experiment. The differential cross sections of the Σ+p, Σ−p elastic scatterings and Σ−p → Λn inelastic...
The determination of hadron interactions is one of the most important subjects in nuclear physics, and the obtained interactions serve as the key quantities which bridge different hierarchies of physics, particle physics, nuclear physics and astrophysics.
Recently, a novel theoretical method (HAL QCD method) was proposed to calculate hadron interactions from first-principles calculations by...
Understanding (hyper)nuclear physics from ab initio QCD has been a long-standing goal. By calculating finite-volume spectra on the lattice and using finite-volume quantization conditions, it is possible to determine baryon-baryon scattering phase shifts and bound states. I will discuss the challenges in these calculations, presenting results in the continuum limit at an SU(3) flavour-symmetric...
There are many examples of correlations among neutron star properties and parameters of the dense matter equation of state near the saturation density. Motivated by the discovery of correlations among the neutron star maximum mass, its radius, central density and pressure, and perturbative expansions in radius of the mass, energy density and pressure near the centers of neutron stars, a...
In most equations of state, the electron chemical potential in neutron star (NS) matter reaches the value of the free pion mass at rather moderate baryon densities. This would lead to pionization of NS matter when negative pions replace electrons. The repulsive s-wave pion-neutron interaction could prevent this.
We apply the effective chiral Lagrangian at the second chiral order to construct...
In the last years the correlation measurements at LHC, particularly performed in small colliding systems such as proton-proton collisions, proved to be a powerful complementary experimental tool to access the strong interaction in hadronic systems with strange and charm content. The QCD dynamics driving the underlying interaction in these sectors is characterized by a rich presence of...
In this work, to calculate the diquark mass together with the quark-diquark potential, we apply an extended HAL QCD potential method to a baryonic system made up from a static quark and a diquark where we consider various types of diquarks (eg: scalar $0^{+}$ diquark, axial-vector $1^{+}$ diquark etc). Numerical calculations are performed employing 2+1 flavor QCD gauge...
The gravitational form factors of the proton provide essential information on its mechanical structure such as its mass, spin, mechanical pressure, and shear force. In the current talk, we present a series of recent results for the flavor decomposition of the gravitational form factors~(GFFs) of the proton in a pion mean-field approach or the chiral quark-soliton model. We analyze problems...
Pion and kaon are one of the simplest meson structures to study the distribution function. In this work, we have calculated the time reversal quark transverse momentum-dependent parton distribution functions (TMDs) in the light-front based holographic model (LFHM) and quark model (LFQM) up to twist-4. We have presented the three dimensional structure of T-even TMDs for both the particles in...
Understanding how hadrons are made by quarks and gluons from Quantum Chromodynamics (QCD), the underlying theory of strong interaction, is a holy grail in theoretical physics. I will review where we are in this quest 10 years after the invention of the Large Momentum Effective Theory.
The strong coupling alpha_s is a fundamental parameter of the Standard Model and high accuracy at the 0.5 percent level or better will be required to maximize the potential of the LHC and other experiments.
Lattice QCD is ideally placed to achieve this goal. As a member of the FLAG working group on alpha_s I present an update of the current situation and an outlook on future prospects.
