Conveners
Parallel Session 3
- Anastasios Lagoyannis (NCSR Demokritos)
This abstract discusses three recent measurements conducted at BESIII on the cross-sections of electron-positron annihilation into hidden charm final states:
1) The Born cross-section for the reaction e+ e- → eta hc is measured at center-of-mass energies ranging from 4.129 to 4.600 GeV. A resonant structure in the cross-section line shape near 4.200 GeV is observed with a statistical...
At BESIII, the electromagnetic form factors (EMFFs) and the pair production cross sections of various baryons have been studied. The proton EMFF ratio |GE/GM| is determined precisely and line-shape of |GE| is obtained for the first time. The recent results of neutron EMFFs at BESIII show great improvement comparing with previous experiments. Cross sections of various baryon pairs (Lambda,...
With the large datasets on 𝑒+𝑒−-annihilation at the 𝐽/𝜓 and 𝜓(3686) resonances collected at the BESIII experiment, multi-dimensional analyses making use of polarization and entanglement can shed new light on the production and decay properties hyperon-antihyperon pairs. In a series of recent studies performed at BESIII, significant transverse polarization of the (anti)hyperons has been...
This presentation delves into recent experimental measurements of charmonium decays, encompassing four independent measurements conducted at BESIII. 1) Based on 2.7 billion psi(3686) events collected with the BESIII detector at the BEPCII collider, we present the first evidence of chi_c0 → Lambda anti-Lambda phi decays and the first observation of chi_c1,2 → Lambda anti-Lambda phi decays, with...
In the relativistic heavy-ion collisions at the LHC, the quark-gluon plasma (QGP) is produced during the deconfinement phase transition, when the system reaches a specific temperature ($T_{ch}$) and energy density.
Lattice QCD calculations indicate that chiral symmetry (CS) restoration occurs around $T_{ch}$ as well ($\sim 156$ MeV). CS restoration can be investigated using parity partner...
We perform a theoretical interpretation of the results on intermittency analysis recently presented by the STAR collaboration at RHIC (Phys. Lett. B 845, 138165 (2023), arXiv:2301.11062v1 [nucl-ex]). The main task in this analysis was the search for the scaling law relating higher order factorial moments in transverse momentum space with the second order one. In a more general context, such a...
