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Prof. Nicole Bell (The University of Melbourne)23/09/2026, 09:00BSM Physics
Neutrino physics is entering an era of precision measurement, offering unprecedented opportunities to probe neutrino properties. This talk will discuss three examples. First, we present a new approach to measuring the CP-violating phase in neutrino mixing. This involves an up-down flux ratio for sub-GeV atmospheric neutrinos. For the example of Hyper-Kamiokande --- the first experiment with...
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Alec Hannaford Gunn (The University of Adelaide)23/09/2026, 09:30Lattice QCD
Compton scattering of hadrons in the low-to-intermediate energy range provides a window into the transition between perturbative and non-perturbative QCD. However, the standard perturbative and effective theory techniques struggle to describe this energy region, making first-principles lattice calculations all the more valuable.
The CSSM/QCDSF collaboration has performed numerous...
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Ryo Kobayakawa (Osaka University)23/09/2026, 10:00Nuclear Structure and Reactions
The K-bar NN system is a promising candidate for studying the strongly attractive K-bar N interaction in few-body nuclear systems. We investigated the gamma d to K-zero Lambda p reaction using the LEPS2 detector at SPring-8 with tagged photon beams of 1.3 to 2.4 GeV. We observed a clear enhancement in the Lambda p invariant-mass spectrum at low momentum transfer. We performed a two-dimensional...
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Finn Stokes (The University of Adelaide)23/09/2026, 11:00Lattice QCD
For twenty years, a persistent discrepancy between experimental measurements and theoretical calculations of the muon anomalous magnetic moment has provided tantalising hints of new physics. In recent years, improvements to the experimental precision have appeared to make the tension stronger and stronger. However, at the same time, our new theoretical computation using lattice QCD overturned...
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Mr Jordan McKee23/09/2026, 11:30Lattice QCD
Precision measurements of superallowed nuclear Beta decays provide an important test of the Standard Model through the determination of Vud. Interpreting these measurements requires an accurate understanding of the effects of the strong interaction on electroweak radiative corrections at low momentum transfer. In this regime, perturbative methods are no longer applicable, motivating...
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Martin Sevior (University of Melbourne)23/09/2026, 12:00BSM Physics
We propose to build a new national facility, a Beamline Instrument for MeV-scale particle and nuclear Physics (BLIMP), to be housed at the Heavy Ion Accelerator Facility at ANU and Melbourne. BLIMP will be a Time Projection Chamber, an advanced particle detector for tracking electrons in three dimensions.
It will be capable of a broad science program encompassing searches for new particles...
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Osamu Morimatsu (KEK)23/09/2026, 14:00
In a series of papers we have proposed and developed the idea of the pole expansion as a model-independent method to analyze the results of experiments and/or lattice QCD simulations, in particular for unstable states, that are more general than resonances.
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In the talk we report on the pole expansion of the two-hadron imaginary-time correlation function in the infinite volume and its... -
Connor Carrington (Adelaide University)23/09/2026, 14:30Hadron Structure and Reactions
In order to explore key problems in particle physics such as hadron spectroscopy, confinement and dynamical mass generation, we require a non-perturbative approach to describing our particle interactions. In quantum field theory, this is tantamount to understanding the full non-perturbative structure of the fermion and photon propagators, which in turn requires knowledge of the fermion-photon...
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Yu Zhuge23/09/2026, 15:00
Lattice QCD constraints on pion electroproduction off a nucleon
Very recently, a lattice QCD collaboration has explored threshold pion electroproduction near the physical pion mass and has simulated the relevant multipole amplitudes. Different multipole amplitudes are usually entangled in experimental data, and thus extracting each of them independently from first principles provides...
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23/09/2026, 15:30
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Xuangong Wang23/09/2026, 16:00Dark Matter: Searches and Theories
We present the first global QCD analysis of electron-nucleon deep-inelastic scattering and related high-energy data that incorporates the contribution of a dark photon. Our results reveal a significant reduction in $\chi^2$ relative to the baseline QCD fit, providing the first indirect hint of a dark photon's existence. Furthermore, we explore the implications of a dark photon on...
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Dr Tomas Howson (Adelaide University)23/09/2026, 16:30Nuclear Structure and Reactions
Defining a renormalisation process that incorporates mixing between connected and disconnected operators, both in the quark and gluon sectors, relies on measuring disconnected operators inserted on bare lattice quark and gluon propagators. In this talk, I will discuss calculations of these operators through Feynman-Hellmann techniques, and the results of renormalised hadronic operators when...
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Prof. Anthony Williams (University of Adelaide)23/09/2026, 17:00BSM Physics
The strong CP problem arises from the apparent smallness of the QCD theta parameter, which is experimentally constrained to satisfy |theta| <~ 10^-10 despite being allowed by the local symmetries of the Standard Model. In this talk I revisit the conceptual assumptions underlying the theta-dependent formulation of QCD, with particular emphasis on the role of topology, global gauge structure,...
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Wally Melnitchouk (Jefferson Lab)24/09/2026, 09:00Deep Inelastic Scattering, GPDs and TMDs
We present recent results from the JAM Collaboration’s program to determine the one- and three-dimensional structure of the proton and other hadrons through global QCD analyses of high-energy scattering data. Recent developments include studies of the isospin dependence of the nuclear EMC effect and the stability of parton distribution functions (PDFs) at large momentum fractions, with...
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Stepan Stepanyan24/09/2026, 09:30Deep Inelastic Scattering, GPDs and TMDs
We present an overview of the active scientific program in Hall B, powered by the up to 11 GeV electron beams of the Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Lab. Hall B hosts three major collaborations, CLAS, HPS, and Prad, each operating distinct, high-precision detector systems to explore key questions in nuclear and high-energy physics. Current research spans...
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Katsuyoshi Sone (Tokyo Metropolitan University)24/09/2026, 10:00Hadron Structure and Reactions
The S-matrix describing the scattering process can be expressed in terms of projection operators onto the allowed spin–isospin channels and the corresponding phase shifts. Using the entanglement entropy in the spin or isospin space of the two-particle state, one can define the entanglement power, which quantifies the ability of the S-matrix to generate entanglement in the system. By...
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Dr AJ Mitchell (Australian National University)24/09/2026, 11:00Nuclear Structure and Reactions
For much of its history, low-energy nuclear physics has been driven by phenomenological models that describe experimental observations without directly addressing their microscopic origins. Collective models based on vibrations, rotations, and shell structure have provided a remarkably successful framework for interpreting excitation spectra and other spectroscopic observables. However, rapid...
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Daiki Suenaga (KMI, Nagoya University)24/09/2026, 11:30Hadron Structure and Reactions
Motivated by the recent HAL QCD lattice results on the $D$ - $D^*$ potential at nearly physical point $m_\pi=146.4$ MeV, we theoretically examine effects from the two-pion exchange in (semi-)long-range parts of the $D$ - $D^*$ system. We employ the framework of heavy-meson chiral perturbation theory with heavy-quark spin symmetry. The pion exchanges up to next-to-next-to-leading order...
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Prof. Hiroyuki Noumi (RCNP, The University of Osaka)24/09/2026, 12:00
The Quantum Chromo-Dynamics (QCD) at low energy is characterized by spontaneous breaking of chiral symmetry and color confinement. They are induced by topological vacuum configuration of the gluon filed (instanton). However, it has not yet been clarified very clearly how they work in forming hadrons. We will perform spectroscopic studies of baryon with heavy flavors, through which we could...
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Tyler Hague (JLab)24/09/2026, 14:00Deep Inelastic Scattering, GPDs and TMDs
Over 40 years on from the observation of the modification of nucleons in nuclei, we are still working to pin down many of the properties of the EMC Effect. Many recent efforts, both theory and experiment, have focused on testing hypotheses in light nuclei as it has become feasible to perform exact calculations on these, relatively, simpler systems. Some of the most prominent questions studied...
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Kiyoshi Tanida (Japan Atomic Energy Agency)24/09/2026, 14:30
I will introduce our activities on hadron spectroscopy at J-PARC facility in Japan with the HypTPC detector, which is a time projection chamber with large acceptance. I will show the results of an experiment (E42, H dibaryon search) which is in the analysis phase, and introduce some other experiments which are running, or in the planning stage.
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Mischa Batelaan (Adelaide University)24/09/2026, 15:00Lattice QCD
We present a lattice QCD calculation of the $K\to\pi$ transition matrix element using a flavour-changing Feynman-Hellmann approach, extending the flavour-changing formalism developed for baryons to the meson sector.
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A flavour-changing temporal vector current added to the action mixes the $K$ and $\pi$ interpolating fields, and the matrix element $\langle{K}|{V_4}|{\pi}\rangle$ can be read... -
Masayasu Harada (KMI, Nagoya University)24/09/2026, 16:00Hadron Structure and Reactions
In this talk, I will show my recent analysis on the electric form factor of proton based on a parity doublet model. I first briefly review the two-parameter formula for nucleon electromagnetic form factors, and then explain how to construct the electric form factor within a parity-doublet model. The lowest-order rho-NN and omega-NN couplings are determined to reproduce the properties of...
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Leona James (Adelaide University)24/09/2026, 16:30Hadron Structure and Reactions
While it is thought that hyperons should play a key role in neutron stars, hyperonic models of nuclear matter in neutron star interiors have previously led to maximum stellar masses below the observed maximum. In this research, both scalar ($\sigma^*$) and vector ($\phi$) hidden strangeness mesons are added to the quark-meson-coupling (QMC) model. QMC is unique in that the coupling directly to...
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Manato Sakai (Nagoya University)25/09/2026, 09:00Hadron Structure and Reactions
The doubly charmed tetraquark $T_{cc}$, reported by the LHCb experiment in 2022, is interpreted as a $DD^\ast$ hadronic molecular state because of its location close to the $D^{\ast +}D^0$ threshold. Motivated by this observation, we analyzed $T_{cc}$ as a $D^{(\ast)}D^{(\ast)}$ molecule using a coupled-channel approach. On the other hand, based on superflavor symmetry, which relates a heavy...
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Kotaro Murakami25/09/2026, 09:30Lattice QCD
The $\Lambda(1405)$ baryon is not well described by the naive three-quark picture and has long been interpreted as a $\bar{K}N$ quasi-bound state. To study it from first principles, we compute the underlying meson-baryon interactions in lattice QCD with the HAL QCD method, in which hadron interactions are extracted as potentials. We work in the flavor SU(3) limit, where each irreducible...
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Navneet Krishnan (Australian National University)25/09/2026, 10:00Dark Matter: Searches and Theories
One aspect of the search for Weakly-Interacting Massive Particle (WIMP) dark matter is direct detection, where terrestrial detectors aim to observe or constrain interactions between WIMPs and nuclei. This requires the application of a nuclear structure model in order to effectively predict the potential nuclear responses to WIMP interactions. To date, this has been achieved using the nuclear...
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Prof. Chris Allton (Swansea)25/09/2026, 11:00Broken Symmetry and its Restoration
I present some interesting speculations on quantum field theory (QFT) and its relationship to topology. A formalism is presented which relates both gauge bosons and fermions to topological objects. When viewed through the centre vortex lens, a connection can then be made with both confinement and chiral symmetry breaking.
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Hideko Nagahiro (Nara Women's University)25/09/2026, 11:30Hadron Structure and Reactions
Recently the LHCb collaboration observed five new narrow excited states in the $\bar{K}\Xi_c$ invariant mass spectrum: the $\Omega_c(3000)$, $\Omega_c(3050)$,$\Omega_c(3065)$, $\Omega_c(3090)$ and $\Omega_c(3119)$. Following this discovery, the Belle Collaboration confirmed four of these five narrow states. A popular interpretation is that the observed $\Omega_c^*$ states correspond to the...
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Ahmad Jafar Arifi (JAEA)25/09/2026, 12:00Hadron Structure and Reactions
Exceptional points (EPs), where eigenvalues and eigenvectors coalesce, are a hallmark of non-Hermitian systems but remain largely unexplored in quantum chromodynamics (QCD). In this talk, we demonstrate that imaginary magnetic fields provide a simple realization of non-Hermitian dynamics in hadronic systems. Using both a hadronic effective Lagrangian and a constituent quark model, we identify...
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14. Production of Polarized Antiprotons through the Production and Weak Decay of Antilambda HyperonsTakatsugu Ishikawa (Research Center for Electron Photon Science, Tohoku University)25/09/2026, 14:00Hadron Structure and Reactions
Polarized antiprotons provide unique opportunities to investigate spin-dependent antiproton-proton interactions, annihilation mechanisms, and spectroscopy of hadrons. However, no practical method has yet been stablished for producing an intense polarized antiproton beam. In this work, we propose a novel method for producing polarized antiprotons through the sequential reaction $\bar{p}p\to...
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Ting-Yan Li (Lanzhou University)25/09/2026, 14:30Hadron Structure and Reactions
In this work, a systematic investigation of the production of high-orbital-excitation kaons in $K^{-}p$ reactions is carried out within an effective Lagrangian model.
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The relevant $t$-channel processes are constructed, and the model is calibrated using a single adjustable parameter determined from existing experimental data.
With this parameter, the measured production cross sections for... -
32. Omega baryon excited state contaminations using Heavy Baryon Chiral Perturbation Theory (HBChPT)Isabella Frankel25/09/2026, 15:00Lattice QCD
To achieve the high precision required for theoretical inputs into quantities such as muon g-2 and CKM matrix elements, lattice QCD calculations require a precise determination of the lattice scale. This requires a quantity that is measured experimentally to very high precision and match a lattice calculation onto the experimental value. One of the best choices of this quantity is the Omega...
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Atsushi Hosaka25/09/2026, 16:00Hadron Structure and Reactions
This is an attempt to extract J/psi-N interaction from the decay of psi(2S) via two pion emission. The diagonal matrix element of the 2-pion source J/psi to J/psi is related to the transition matrix element of psi(2S) to J/psi which can be extracted by the known experimental data. A naive estimate implies that there is non-negligible strength for the J/psi-2pion coupling, which would provide...
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Fang-Chao Han (Lanzhou University)25/09/2026, 16:30Hadron Structure and Reactions
Structure of the $\Omega^{-}(2012)$ with Hamiltonian Effective Field Theory
We investigate the internal structure of the $\Omega(2012)^-$ by analyzing lattice QCD simulation and experimental data within Hamiltonian effective field theory, considering both $J^P = 1/2^-$ and $3/2^-$ assignments. The couplings to the dominant decay channel $\Xi \bar{K}$ and the near-threshold channel $\Xi(1530)...
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Igor Samsonov (UNSW)26/09/2026, 09:00Broken Symmetry and its Restoration
Precision measurements of atomic parity violation and parity-violating electron scattering provide sensitive tests of the Standard Model at low energies. In this work, we show that exchange of two neutrinos, together with analogous fermion-loop contributions, generates a parity-violating dispersion interaction between atomic electrons and quarks. Although the long-range potential scales as...
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kang yu (University of Chinese Academy of Sciences)26/09/2026, 09:30Lattice QCD
Extracting resonance properties from lattice QCD increasingly requires a finite-volume framework capable of treating coupled multi-particle dynamics beyond two-body systems. Here we develop a nonperturbative Hamiltonian framework(NPHF) for general $N$-body finite-volume systems, establishing a direct connection between finite-volume spectra and infinite-volume scattering observables. The...
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Matthew Rumley (Adelaide University)26/09/2026, 10:00Deep Inelastic Scattering, GPDs and TMDs
Generalised parton distributions (GPDs) provide a three-dimensional description of hadron structure and offer a framework for investigating the internal structure of nucleon resonances. We study deeply virtual Compton scattering with an associated pion in the final state, $eN\rightarrow e\gamma N\pi$, where the $N\pi$ system provides access to both conventional nucleon GPDs and...
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Philipp Gubler (JAEA)26/09/2026, 11:00Hadron Structure and Reactions
It is currently still not established how the phi meson mass and decay width behave in a dense
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environment such as nuclear matter. In this talk, the status of recent theoretical research related
to the properties of the phi meson in nuclear matter is reviewed, with a focus on observables
measured at the KEK E325, J-PARC E16 and E88 experiments, including dilepton and K+K-
decay modes... -
Prof. Yasuhiro Yamaguchi (Tokyo Metropolitan University)26/09/2026, 11:30Hadron Structure and Reactions
In recent years, there has been growing interest in exotic hadrons that exhibit structures beyond the conventional hadron picture, where baryons are treated as three-quark states ($qqq$) and mesons as quark-antiquark ones ($q\bar{q}$). In the charm sector, many exotic hadrons such as $XYZ$, $P_c$, and $T_{cc}$ have been reported in experiments. Most of these states have appeared near hadron...
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Thakur Giriraj Hiranandani (the University of Queensland)26/09/2026, 12:00
Center vortices play a fundamental role in our understanding of the QCD vacuum, the mechanism of quark confinement, and dynamical chiral symmetry breaking. They are topological defects that form closed two-dimensional sheets that organise into highly intricate, foam-like structures. In this work, we use topological data analysis to study the structure of center vortices in dynamical lattice...
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Anthony Williams27/09/2026, 09:00
SABRE is an international collaboration that will operate similar particle detectors in the Northern (SABRE North) and Southern Hemispheres (SABRE South). This innovative approach aims to distinguish potential dark matter signals from seasonal backgrounds: a pioneering strategy only feasible with a Southern Hemisphere experiment. SABRE South is located at the Stawell Underground Physics...
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Takeshi O. Yamamoto (JAEA)27/09/2026, 09:30Nuclear Structure and Reactions
At the J-PARC K1.8 beamline, experiments were performed and planned to study hyperon-bound systems such as Lambda and Xi hypernuclei and Xi atoms, using several techniques. These measurements, including hyperon scattering experiments, provide knowledge of hyperon-nucleon and hyperon-hyperon interactions. Recent results and plans for experiments at the beam line will be presented in this contribution.
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Mr Jesper Leong (Adelaide University)27/09/2026, 10:00
Neutron stars have long been used to gain insights into the nuclear equation of state (EoS). Here, we introduce short-distance repulsive interactions within the framework of the quark-meson coupling (QMC) model and show that the EoS supports heavy 2.1 solar mass stars even in the presence of hyperons and an exotic six-quark H-dibaryon. I close by discussing neutrino transport and stellar...
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Makoto Oka27/09/2026, 11:00Nuclear Structure and Reactions
Gravitational form factors of atomic nuclei ranging from 16O to 208Pb are calculated by the use of the realistic relativistic mean field (RMF) picture of nuclei. The D term, which corresponds to the radial distribution of the shear force density (traceless part of the stress tensor), is of particular interest. It shows a strong mass number dependence and also shell structure of nuclei.
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Anthony Thomas27/09/2026, 11:30Nuclear Structure and Reactions
One challenging aspect of the modern study of atomic nuclei is to understand how they emerge from QCD. After reviewing the development of the quark meson coupling model, we show that it does indeed provide a quantitative theory of nuclear structure starting at the quark level. We then present some of the latest results obtained with the model, from superheavy nuclei to the potential...
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