Conveners
Hadron spectroscopy: (4)
- Zhiqing Liu
Hadron spectroscopy: (4)
- There are no conveners in this block
Hadron spectroscopy
- There are no conveners in this block
We present a comprehensive study of near-threshold structures in the J/\psi J/\psi mass spectrum using the fully reconstructed J/\psi J/\psi \rightarrow 4\mu final state, based on proton-proton collision data at \sqrt{s} = 13 and 13.6 TeV collected by the CMS experiment. With approximately four times more J/\psi pair candidates compared to the previous Run 2 dataset, the combined data sample...
The LHCb experiment is well suited to the spectroscopy of heavy flavor hadrons. The proton-proton collisions provided by the Large Hadron Collider produce a variety of heavy flavor states, and the excellent vertex and momentum resolution of the LHCb detector enables precision studies of hadron properties. Access to the kinematics of full decay chains allows amplitude analysis, which provides...
Using the world’s largest samples of $J/\psi$ and $\psi(3686)$ events produced in e+e- annihilation, BESIII is uniquely positioned to study light hadrons in radiative and hadronic charmonium decays. In particular, exotic hadron candidates including multiquark states, hybrid mesons, and glueballs can be studied in high detail. Recent highlights on the light exotics searches and on baryon...
Multi-hadron reactions play a key role in several subfields of nuclear and particle physics, including hadron spectroscopy, nuclear reactions, and precision tests of the Standard Model of particle physics. Despite the non-perturbative nature of quantum chromodynamics (QCD), the advent of lattice QCD has enabled the direct constraint of various hadronic reactions from the Standard Model. In...
Color deconfinement and chiral-symmetry restoration have long been predicted by QCD theory. Color deconfinement in the form of a nearly perfect fluid of quarks was reported by all four RHIC experiments in 2005. In a December 2024 paper, the PHENIX Collaboration details two-pion Lévy-stable Bose-Einstein correlation data in Au+Au collisions at the top RHIC energy and reports a significant...
In recent years, a number of charmonium-like states have been observed
above the open-charm threshold in various experiments. Their properties often go
against our expectations for regular charmonium states, making their
interpretation difficult. With BESIII, we are a leading contributor to the
experimental studies of the so-called XYZ states – studying Y-states directly in
e+e-...
The Belle II experiment, a major upgrade of the Belle experiment, is currently collecting data. With an integrated luminosity of 575 fb-1, Belle II exceeded the maximum integrated luminosity reached by both BaBar and Belle experiments. Recently, data analyses combining Belle and Belle II data were performed, delivering excellent results with unprecedented precision.
In this talk, recent...
In this talk I will present a relativistic formalism for three-particle scattering with arbitrary angular momentum, developed from the integral equations that can be used in lattice QCD analyses. Focusing on spinless systems, I present the partial-wave projected scattering amplitudes that preserve S-matrix unitarity and give simplified expressions for short-distance three-body interactions in...
The sexaquark is a stable state with quark content ( u u d d s s) hypothesized by [1] which might be a candidate for dark matter in the Universe. We present results [2] on the coalescence production of the sexaquark using the parton and hadron cascade model PACIAE in p+p collisions at sqrt(s) = 7 TeV. The yields, yield ratios, and dependences of the spatial parameters (the size of the diquark...
