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

Session

Neutrino & Astroparticle Physics, Gravitational Waves, Neutron Stars

Sep 17, 2025, 10:00 AM

60. Recent results from KM3NeT

Revaz Shanidze (Tbilisi State University)

9/17/25, 10:00 AM

KM3NeT is a deep-sea research infrastructure which is currently under construction in the Mediterranean Sea. It comprises two neutrino telescopes at two locations KM3NeT-Fr and KM3Net-It for research in neutrino physics and high energy neutrino astronomy [1]. In addition, KM3NeT infrastructure will house instrumentation for marine biology, oceanography and geophysics. KM3NeT-Fr site near...

51. Status of JUNO

Yury Malyshkin

9/17/25, 10:35 AM

JUNO (Jiangmen Underground Neutrino Observatory) is a multipurpose detector designed to study fundamental neutrino properties by detecting electron antineutrinos produced in the reactor cores of two commercial nuclear power plants in southern China and to explore natural objects like Sun, Earth and supernovas using neutrinos as a probe. The detector consists of the 20-kiloton liquid...

42. Strongly Interacting Matter at Extreme Conditions: New Trends in the Neutron Star EOS with Hyperons, Bosonic Dark Matter, and Quark Matter

mahboubeh shahrbaf motlagh

9/17/25, 11:30 AM

The possible presence of dark matter in neutron stars offers a unique window into physics beyond the Standard Model.
We explore the role of the hypothetical bosonic sexaquark as a dark matter candidate, together with hyperonic degrees of freedom, inside neutron stars.
The hadronic phase is modeled within a relativistic density functional (DD2Y-T), while deconfined quark matter is described...

38. Impact of Bosonic Dark Matter on Neutron Star Structure and X-ray Pulse Profiles

Davood Rafiei Karkevandi (University of Wroclaw, Institute of Theoretical Physics)

9/17/25, 12:00 PM

In this study, we explore the effects of dark matter (DM) on a new class of compact objects, known as DM-admixed neutron stars (NSs), in light of recent observational data from the NICER X-ray telescope and the LIGO/Virgo gravitational-wave detectors. We focus on self-repulsive sub-GeV bosonic DM, which can be distributed either as a dense core within the NS or as an extended halo surrounding...

32. Long-Baseline Neutrino Physics: The NOvA Experiment

Saleh ABUBAKAR (Erciyes University)

9/17/25, 12:30 PM

Neutrinos are the second most common particles in the universe, behind photons, although we still don't know much about them. The discovery of neutrino oscillations has shown that neutrinos have very modest but nonzero masses. This data is clear proof of physics outside the Standard Model. The NOvA experiment at Fermilab looks at these basic features by analyzing how electron neutrinos appear...

41. From Matter to Light: Unveiling Neutrino Non-Standard Interactions

Sudip Jana (Harish-Chandra Research Institute)

9/17/25, 2:00 PM

After a brief introduction to neutrino non-standard interactions, I will focus on the neutrino electromagnetic properties and the correlation between the neutrino magnetic moment and the neutrino mass mechanism. Then, I will discuss that the models that induce large neutrino magnetic moments while maintaining their small masses naturally also predict observable shifts in the charged lepton...

39. Questions on possible existence of anomalous particles at ~17 MeV & ~38 MeV

Dr Cheuk-Yin Wong (Oak Ridge National Laboratory)

9/17/25, 2:25 PM

If we approximate light quarks as massless and apply the Schwinger confinement mechanism to light quarks, we will reach the conclusion that a light quark $q$ and its antiquark $\bar q$ will be confined as a $q\bar q$ boson in the Abelian U(1) QED gauge interaction in (1+1)D, as in an open string. Could such a QED-confined $q\bar q$ one-dimensional open string in (1+1)D be the idealization of...

37. Q-balls in Polynomial Potentials

Mikheil Sokhashvili

9/17/25, 2:50 PM

Bosons carrying a conserved charge can form stable bound states if their Lagrangian contains attractive self-interactions. Bound-state configurations with a large charge Q can be described classically and are denoted as Q-balls, their properties encoded in a non-linear differential equation. Here, we study Q-balls in arbitrary polynomial single-scalar-field potentials both numerically and via...

16. Opening up baryon number violating operators

Diana Sokhashvili

9/17/25, 3:15 PM

Baryon number violation is our most sensitive probe of physics beyond the Standard Model. Its realization through heavy new particles can be conveniently encoded in higher-dimensional operators that allow for a model-agnostic analyses. The unparalleled sensitivity of nuclear decays to baryon number violation makes it possible to probe effective operators of very high mass dimension, far beyond...