New Trends in High-Energy Physics 2025 (Dedicated to the memory of Prof. László Jenkovszky)

Session

Hadron Structure, Proton Scattering, Holographic QCD

15 Sept 2025, 17:20

57. Memory burdened black holes as dark matter

Gia Dvali

15/09/2025, 17:20

49. New Light Particles at Troitsk Meson Factory (TiMoFey)

Prof. Dmitry Gorbunov (Institute for Nuclear Research of RAS (RU))

15/09/2025, 17:55

Theoretical and phenomenological problems of the Standard Model of
particle physics (SM) ask admittedly for new physics, and light particles
theoretically more preferable than heavy particles given the hierarchy
problem. Naturally, these particles must be singlet with respect to
the SM gauge group, otherwise the absence of any confirmed evidence of
light particles would be puzzling...

9. A study of particle spectra in high-energy collisions using nonadditive statistical mechanics

Dr Trambak Bhattacharyya (Jan Kochanowski University)

15/09/2025, 18:30

Hadron spectra originated in high-energy collisions (proton on proton, lead on lead and so on) follow a power-law distribution. Many studies show that the power-law distributions inspired by the nonadditive statistics, proposed by Constantino Tsallis, describe experimental data substantially well. There have been many efforts to understand the physical scenarios that may give rise to these...

23. PHENIX Overview

Balazs Ujvari (HUN-REN Institute for Nuclear Research and University of Debrecen (HU))

15/09/2025, 18:55

The PHENIX collaboration at RHIC continues to produce important results in the field of strongly interacting matter, taking advantage of the rich data from p+p, p/d/³He+Au, and Au+Au collisions. In this presentation, we highlight recent analyses that deepen our understanding of QCD phenomena across a wide range of collision systems. Using direct photons to minimize selection bias, suppression...

33. New Understanding of the Phase Diagram of QCD

Larry McLerran

18/09/2025, 10:00

The phase diagram of QCD is discussed as a function of the number of colors. It is argued that for N_c =3, at finite temperature and zero baryon number density, there are likely three phases. The three dimensional string is postulated to describe the low temperature phase, and with zero free parameters, the thermodynamics and mass spectrum is well described. This description works until a...

35. Collectivity in small systems measured by charm and bottom hadrons

Joerg Aichelin

18/09/2025, 10:35

The experimental results of open heavy flavour hadrons, observed in high-
energy proton-proton (pp) collisions, show two unexpected features: a finite elliptic flow, although their production is due to hard processes, and at low transverse momentum there are considerable more baryons produced as expected from $e^+ e^-$ fragmentation functions. Employing the recently advanced EPOS4HQ event...

40. Probing the properties of strongly interacting matter with heavy-ion collisions

Elena Bratkovskaya (GSI, Darmstadt)

18/09/2025, 11:10

We review the properties of the strongly interacting hadronic and
partonic matter at finite temperature $T$ and baryon chemical potential $\mu_B$ in- and out-of equilibrium.
The description of the strongly interacting (non-perturbative) QGP (quark-gluon plasma) in equilibrium is realized within the Dynamical QuasiParticle Model (DQPM), based on the effective propagators and couplings, that...

22. Signatures of Clustering in Multiplicity Fluctuations in Heavy-Ion Collisions

Ali Soheilbeigi Bazgir (Jan Kochanowski University (PL))

18/09/2025, 11:45

We investigate the multiplicity fluctuations of charged particles observed in high-energy nuclear collisions and relate them to the size of hadronizing systems which happen during such processes. We use the average multiplicities N and variances Var (N) of multiplicity distributions of charged particles produced in centrality selected collisions of relativistic heavy-ion nuclei to evaluate the...

47. Leptons as Possible Qubits for Quantum Computing

Paata J. Kervalishvili (Georgian Academy of Natural Sciences and Batumi State University)

18/09/2025, 12:40

Leptons beyond electrons (muons, taus, neutrinos) remain mostly theoretical for quantum computing due to stability and control challenges. However, their unique weak-force interactions and spin properties could inspire niche applications. Electrons, as leptons, already underpin leading qubit platforms (spin/transmon qubits), but heavier leptons are a frontier for future exploration.
...

28. Structures in elastic and single diffractive scattering of protons

Istvan Szanyi (MATE KRC, University of Kansas, Wigner RCP)

18/09/2025, 13:15

Similarities in the underlying physics of elastic proton–proton scattering and single diffractive dissociation (single diffraction, SD) in proton–proton collisions suggest that the squared four-momentum transfer (t) dependence of the double differential cross section in SD should exhibit a minimum–maximum structure analogous to that observed in the elastic differential cross section. By...

6. Measurement of the Proton-Nucleus Transverse Analyzing Power with the RHIC Polarized Hydrogen Gas Jet Target

Andrei Poblaguev

18/09/2025, 13:40

As part of the RHIC spin program, the Atomic Polarized Hydrogen Gas Jet Target (HJET) was developed to provide absolute polarization measurements of proton beams. Recoil protons from vertically polarized beam protons scattering via Coulomb Nuclear Interference (CNI) off the vertically polarized hydrogen jet target were detected using left-right symmetric silicon detectors. Given the precisely...

11. Leptons as Possible Qubits for Quantum Computing

Paata Kervalishvili