Conveners
Plenary: Hadrons and related highenergy physics
- Qiang ZHAO (Institute of High Energy Physics, Chinese Academy of Sciences)
Plenary: Hadrons and related high-energy physics
- Changzheng YUAN (IHEP, Beijing)
I describe the new approach to derive consistently regularized nuclear forces and currents in chiral EFT using the symmetry-preserving gradient flow method.
The Thomas Jefferson National Accelerator Facility (also known as JLab) is a User Facility of the Office of Science of the U.S. Department of Energy, a premium nuclear physics facility at the forefront of exploring the nature of matter. JLab’s Energy Upgraded Continuous Electron Beam Accelerator Facility (CEBAF) can deliver electrons up to 11 GeV with high polarizations onto unpolarized and...
The LHCb experiment is one of the four large experiments at the large hadron collider. It effectively covers the dominant kinematic region of b- and c-hadrons, and the detector is specifically designed to efficiently detect and identify the decay products of the heavy hadrons, making it an excellent laboratory for heavy hadron physics. LHCb keeps making significant contributions to hadron...
The Fermi polaron, a particle dressed by excitations of a fermionic medium, has been extensively studied in ultracold atomic gases. Recently, it was realised that the optical response of doped atomically thin semiconductors also corresponds to a quantum impurity problem, where excitons are introduced into an electronic medium. I will discuss three scenarios where we have recently used...
Imagine dragging a plate across the surface of a tranquil water pool. Quite excitingly, you would form a pair of swirling vortex and antivortex, propagating steadily across the surface. In optics, vortices materialize as phase twists of the electromagnetic field. While traditionally optical vortices arise from interactions between light and matter, we have recently reached a new extreme regime...
The Beijing Spectrometer (BESIII) at the Beijing Electron-Positron Collider (BEPC-II) is a multi-purpose hadron physics experiment optimized in the tau-charm energy region. Its world-record samples of vector charmonia such as J/psi, psi(3686) and psi(3773), as well as energy scans between 2.0 GeV and 4.95 GeV have opened new avenues in hadron spectroscopy, hadron structure, tests of...
$\Lambda$ hypernuclear spectroscopy is useful for investigating the $\Lambda$-nucleon ($\Lambda$N) interaction. High resolution missing-mass spectroscopy for $\Lambda$ hypernuclei was established at Jefferson Lab by means of the $(e,e^{\prime}K^{+})$ reaction. We are preparing a next-generation experiment in which $\Lambda$ hypernuclei with a wide mass range, A = 6-208, will be measured at...
Exotic decay beyond the nuclear dripline represents a frontier in understanding the nuclear landscape. Among these phenomena, two-proton (2p) radioactivity emerges as a distinctive three-body process involving the simultaneous emission of two protons from the ground state of even-Z, neutron-deficient nuclei. Recent advancements in measuring proton-proton correlations have rekindled interest in...
How does nuclear shell structure evolve towards the highly neutron-rich nuclei? How do neutrons arrange themselves when they significantly outnumber protons in a nucleus? Addressing these questions, we present our recent observation of the doubly magic candidate nucleus, 28O, which has 20 neutrons and 8 protons, at RIBF at RIKEN. This nucleus provides a key benchmark for testing modern nuclear...
Relativistic heavy-ion collisions provide unprecedent environment for creating complex few-body nuclei, hypernuclei and their antimatter partners. In addition, baryon transport over several unit of rapidity in heavy-ion collisions provides a unique opportunity to distinguish whether the baryon number is traced by the proposed Y-shaped gluon junction (B=1) or is carried by the valence quarks....
The Belle II experiment has collected 424 fb$^{-1}$ sample of $e^+e^-$ collisions produced by the asymmetric SuperKEKB collider, at a centre-of-mass energy equal to or near the mass of the $\Upsilon(4S)$ resonance. Ninety-percent of the sample is at the $\Upsilon(4S)$ resonance, which decays to $B$-meson pairs. The predecessor experiment, Belle, collected nearly 1~ab$^{-1}$ of data from...
We review the calculation of resonances in some simple benchmark potentials and in some atomic systems such as H-minus and He, using different methods such as stabilzation, complex scaling, complex absorption... We then discuss the application of such methods to multiquark systems.
The discovery of the Higgs boson marked the beginning of a new era in HEP. Precision measurement of the Higgs boson properties and exploring new physics beyond the Standard Model using Higgs as a tool become a natural next step beyond the LHC and HL-LHC. Among the proposed Higgs factories worldwide, the Circular Electron Positron Collider (CEPC) with 100km circumference was proposed by the...
The quest of unraveling the nature of excited hadrons necessarily involves determination of universal — reaction independent — parameters of these states. Transition amplitudes encoding such parameters can be constrained using symmetries of QCD through, e.g., the use of Effective Field Theories, experimental measurements or numerical approaches through lattice QCD.
This three-fold...
In my talk, I will review the application of the effective field theory methods for the analysis of lattice QCD data in the two- and three-particle sectors. These methods are strikingly similar to the ones used to solve the few-body problems in QCD. The deep reason for this similarity is that the short-range physics in both cases is described by the same effective Lagrangian that allows to...
I shall report on D weak decays to three mesons, showing that they are a rich source of information on meson meson interaction and the nature of many resonances generated in the process.
