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

15 Sept 2025, 00:00 → 19 Sept 2025, 18:00 Asia/Tbilisi

Nugzar Gomidze (Batumi State Universityu)

In Memoriam: Prof. László Jenkovszky (1942–2025) With deep sorrow, we inform the community that Prof. László Jenkovszky, founder and inspiring spirit of the New Trends in High-Energy Physics, as well as Bolyai–Gauss–Lobachevsky conference series, passed away on August 16, 2025. For decades, Prof. Jenkovszky was the driving force behind this meeting, bringing together scientists from all over the world and fostering collaboration across generations.  He will be remembered with gratitude and respect by colleagues, collaborators, and friends.

 

New Trends in High-Energy Physics is a serial multi-disciplinary conference with emphasis on topical problems in high-energy (astro)particle and nuclear) physics. It brings together a limited number (up to 90) of prominent as well as ambitious young scientists from all over the world.   
    It is focused on:

• Physics at the LHC
• The Standard Model and beyond; neutrino physics
• Analyticity, unitarity, crossing, duality
• Elastic and diffractive scattering of hadrons and nuclei
• Spin & polarization
• Deep inelastic scattering, multiparticle dynamics
• Nuclear matter at extreme conditions; physics at NICA and FAIR
• Advances in quantum field theory, confinement, condensed matter
• Saturation and phase transition in large (pp) and small (ep) systems
• Non-accelerator physics, cosmic rays
• Astroparticle physics, gravitation and cosmology
• Computing for Large Scale Accelerator Facilities
• New detector, data analysis technique, nuclear safety
• Heavy Ion physics at the LHC and EIC
• Cancer beam therapy
• Future facilities

The Conference  is open to new topics and ideas. 

 

 

Important dates

Deadline for online registration&Call for Abstracts: July 31, 2025
Arrival and registration: September 14, 2025, Sunday, 12:00 to 22:00 (GET) (UTC+04:00)
Opening of the Conference: September 15, 2025, Monday
Closing of the Conference: September 19, 2025, Friday

 

Co-organized by Batumi Shota Rustaveli State University
Supported by ExtreMe Matter Institute EMMI at GSI
Supported by Georgian Academy of Natural Sciences
Supported by The Association of Biomedical and Clinical Engineers of Georgia
Sponsor Ministry of Education and Sport of Adjara Autonomous Republic

 

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Monday 15 September

13:00 Registration

Open Session

Zoom link for online listeners:
https://bsu-edu-ge.zoom.us/j/6103028564 (Passcode: 266786)

1 Welcome address

Speaker: Nugzar Gomidze (Batumi Shota Rustaveli State University)

2 Welcome address

Speaker: Dr Tite Aroshidze (Rector of BSU)

3 Welcome address

Speaker: Maia Khajishvili (Minister of Education and Sport of Ajara Autonomous Republic)

4 Welcome address

Speaker: Paata Kervalishvili

5 Welcome address, in memory to Laszlo

Speaker: Alexander Cheplakov

Cheplakov - laszlo.pdf

16:50 Lunch break

Hadron Structure, Proton Scattering, Holographic QCD: I. Chair: Paata J. Kervalishvili, Co-chair: Mariia Tsarenkova

6 Memory burdened black holes as dark matter

Speaker: Gia Dvali

7 New Light Particles at Troitsk Meson Factory (TiMoFey)

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 indeed. On the other hand,
direct couplings between the new particles and the known particles may
exist: the viable examples are provided by scalar, spinor and vector
portals. These interactions are responsible for production of such
particles in collisions of SM particles and, possibly, for decays of such
particles into SM particles. Therefore, these interactions open the way
to investigate the Beyond the Standard Model (BSM) physics with light new particles. The best chances are exhibited by the intensity frontier experiments, and here we discuss the prospects of new project -- the Troitsk Meson Factory (TiMoFey) -- in direct searches for the new light particles. The accelerator complex will operate with low energy (0.4 GeV -- 1.3 GeV) but high intensity (about 0.1mA) proton beam with strongly shielded target, which allow for placing the detectors at a distance as small as several meters. With huge statistics and large geometric factor the new facility will study previously unexplored regions of the model parameters, that we demonstrate with examples of axion-like particles, millicharged particles, and baryophylic vector. The kinematically allowed and interesting mass range is subGeV, where strong interactions
contaminate a perturbative description of the processes with new
particles, that we illustrate on realistic examples.

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

-Gorbunov.pdf

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

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 distributions. There are also ongoing endeavours to connect the phenomenological nonadditive distributions to the established formalisms of physics, like statistical mechanics.

We describe how the phenomenological distributions used in the literature can be obtained from nonadditive statistical mechanics. We review the divergence problem encountered in this effort and propose a theoretical model to circumvent the issue. We derive a novel bosonic nonadditive distribution that efficiently describes particle spectra in high-energy collisions. After establishing a connection between nonadditive entropy and phenomenological distributions, we investigate rapidity distributions and propose two analytical methods to study longitudinal suppression of the hadrons produced in high-energy collisions.

Speaker: Dr Trambak Bhattacharyya (Jan Kochanowski University)

Trambak_NTHEP_15Sep25.pdf

9 PHENIX Overview

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 of high-pT hadrons in small systems was observed. Detailed studies of direct photon production and flow reveal constraints on early-time dynamics, while advances in heavy flavor measurements enable separation of charm and bottom contributions in dileptons. Jet structure and suppression patterns are examined using both small- and large-R jets, and the observed deviations from NLO predictions suggest the importance of non-perturbative effects. Finally, we emphasize the vital role of data preservation and reproducibility, underscoring PHENIX’s pioneering efforts to implement open access frameworks for long-term scientific impact.

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

Ujvári Balázs.pdf

Tuesday 16 September

CERN/Observatories: I. Chair: Gabriella Cataldi, Co-chair: Antoni Marcinek

10 Remembering Laszlo Jenkovszky and the discovery of Odderon

Speaker: Tamás Ferenc Csörgö (Wigner RCP Budapest and MATE Institute of Technology, Gyöngyös, Hungary)

Tamás Csörgő .pdf

11 Vortex states as a novel tool for nuclear and particle physics

In particle physics, we usually describe particle collisions in terms of plane waves. With very few exceptions, the fact that the initial-state particles are in fact wave packets does not lead to any modification of theoretical and experimental analysis. However, there is a very interesting class of wave packets called vortex states, collisions of which offer a wealth of novel opportunities and insights in nuclear and hadronic physics.

In essence, vortex states of photons, electrons, and other particles are freely propagating wave packets with helicoidal wave fronts. Each particle prepared in this state carries a nonzero orbital angular momentum (OAM) projection on its average propagation direction. This is a new, adjustable quantum number, unrelated to spin, which has never been exploited in experimental nuclear and particle physics. Low-energy vortex photons, electrons, and neutrons have already been demonstrated in experiment, and there exist proposals for generating vortex particles with MeV and GeV energies. Anticipating future experimental progress, one can ask what additional insights on nuclei and particles one can gain once collisions of high-energy vortex states become feasible.

I will give an overview of this interdisciplinary topic and illustrate how collisions of vortex states could give access to new observables that are inaccessible in plane-wave collisions. These new opportunities make use of three key features of vortex states:
* a very particular superposition pattern in a vortex state, which leads, through novel interference effects, to new probes of the scattering amplitude;
* an adjustable initial-state OAM that affects selection rules and spin-dependent observables, for example, in deep inelastic scattering;
* new polarization states of fermions and photons that are altogether impossible for plane waves, which can help probe subtle spin-momentum correlations in hadrons in a new way.

These opportunities will be highlighted by several recent proposals in nuclear and particle physics.

Speaker: Prof. Igor Ivanov (Sun Yat-sen University, Zhuhai, China)

Igor-Ivanov-Batumi-2025.pdf

12 A decade of GW detections... and much more to come!

Ten years ago, the LIGO-Virgo collaboration detected the first-ever gravitational wave signal, produced by a pair of coalescing black holes. Since then, detector sensitivities have improved, detections have multiplied, and long-standing assumptions in astronomy and astrophysics have been challenged. With now over 200 confirmed GW signal candidates and new detections arriving at a rate of about two per week, GW detectors today serve both as discovery engines and full-fledged observatories.

Yet, the technology behind GW detectors still has significant room for advancement. The field faces a trade-off between upgrading instruments and maintaining continuous observation: a 50% improvement in sensitivity may require years of downtime, but could yield more than a threefold increase in detection rates.

In this talk, I will briefly review the evolution of GW detectors, detections, and the associated science over the past decade. I will then report on the current status of the instruments and highlight recent results. I will conclude with an overview of the field plans for the near and not-so-near future.

Speaker: Giacomo Ciani

2025-09-15 - NTHEP Batumi - published.pdf

11:25 Coffee break

CERN/Observatories: II. Chair: Igor Ivanov, Co-chair: Giacomo Ciani

13 Effective interaction of vector bosons of the SM expansion of the Chern-Simons type with fermions of the Standard Model

We consider the vector extension of the Standard Model (SM) with Chern-Simons (CS) type interaction. This extension contains a new massive vector boson $X_\mu$ (Chern-Simons boson). The minimal gauge-invariant Lagrangian of the interaction with SM particles has the form of 6-dimension operators
\begin{align}
\mathcal{L}1&=\frac{C_Y}{\Lambda_Y^2}\cdot X\mu (\mathfrak D_\nu H)^\dagger H B_{\lambda\rho} \cdot\epsilon^{\mu\nu\lambda\rho}+h.c.,\nonumber \
\mathcal{L}2&=\frac{C{SU(2)}}{\Lambda_{SU(2)}^2}\cdot X_\mu (\mathfrak D_\nu H)^\dagger F_{\lambda\rho} H\cdot\epsilon^{\mu\nu\lambda\rho}+h.c. \nonumber
\end{align}
After electroweak symmetry breaking, these Lagrangians generate (among other terms of higher dimensions) Lagrangians of three fields interactions of the CS vector boson with vector fields of the SM and the Higgs boson. In unitary gauge, they have forms
\begin{equation}
\mathcal{L}^{(4)}{CS}=
c_z \epsilon^{\mu\nu\lambda\rho} X\mu Z_\nu \partial_\lambda Z_\rho +c_\gamma \epsilon^{\mu\nu\lambda\rho} X_\mu Z_\nu \partial_\lambda A_\rho+\left{ c_w \epsilon^{\mu\nu\lambda\rho} X_\mu W_\nu^- \partial_\lambda W_\rho^+ + h.c.\right},
\end{equation}
\begin{equation}
\mathcal{L}^{(5)}{CS}=c{\gamma h}\epsilon^{\mu\nu\lambda\rho} X_\mu \frac{\partial_\nu h}v \partial_\lambda A_\rho +
c_{z h}\epsilon^{\mu\nu\lambda\rho} X_\mu \frac{\partial_\nu h}v \partial_\lambda Z_\rho.
\end{equation}
We consider the effective loop interaction of a new vector boson with fermions of the SM and its renormalizability in an arbitrary gauge. Our analysis shows that loop divergences cannot be eliminated in the effective interaction between CS bosons and fermions of the same flavor, whereas the effective loop interaction with fermions of different flavors remains well-defined. The interaction terms between the CS boson and fermions of the same flavor, characterised by divergent prefactors, have been identified.
Since the initial interaction of the CS bosons with SM fields is given by dimension-6 operators, we conclude that after the electroweak symmetry breaking the interaction of the CS boson with fermions of the same flavor should be considered within the framework of the effective field theory approach
\begin{equation}
\mathcal{ L}^{int}{Xff}= \bar f \gamma^\mu (\alpha_f +\beta_f \gamma^5) f X\mu +\frac{m_f}{v^2} \bar f \sigma^{\mu\nu}(\gamma_f+\delta_f \gamma^5) f {X}{\mu\nu}+ \mathcal{L}'{X ff}.
\end{equation}
where dimensionless parameters $\alpha_f$, $\beta_f$, $\gamma_f$, $\delta_f$ should be considered as new parameters of the effective theory and $\mathcal{L}'_{Xff}$ is a well-defined Lagrangian of interaction. The obtained results will help identify the dominant CS-boson production and decay channels, thereby allowing us to determine the sensitivity region of intensity-frontier experiments in the search for the CS boson.

The work of V.G., I.H., and O.Kh. was supported by the National Research Foundation of Ukraine under project No. 2023.03/0149. The work of O.Kh. was funded by the Simons Foundation.

Speaker: Volodymyr Gorkavenko (Taras Shevchenko National University of Kyiv)

Gorkavenko_Presentation.pdf

14 The scalar sector in the Georgi-Machacek model

The Georgi-Machacek (GM) model extends the Standard Model with a scalar sector that predicts exotic Higgs states while preserving a custodial symmetry. Here, we make a comprehensive analysis of the model’s viability and its potential to explain intriguing LHC and LEP data. We show that theoretical constraints are decisive: the requirement that our vacuum is the true global minimum excludes about 40% of the parameter space. Combined with stringent experimental bounds, particularly from Higgs coupling measurements, $b\to s\gamma$ processes, and direct searches for doubly- charged scalars, the surviving parameter space is highly constrained and fragmented.
A compelling scenario emerges where the 125 GeV Higgs is the heavier CP-even state. This allows for a lighter scalar, η, which we identify as a prime candidate to explain the observed 95 GeV excess in the $\gamma\gamma$ and $b\bar b$ channels. Accommodating the related $\tau\tau$ excess is highly challenging for a single particle but becomes viable if the signal is a ”Twin Peak” of nearly degenerate CP-even and CP-odd states. We present strategies to distinguish these scenarios using di-tau decays at future colliders. In conclusion, the GM model is tightly constrained but offers a unique, testable framework to explain current anomalies, making it a key target for the HL-LHC and future experiments.

Speaker: Amine Ahriche (University of Sharjah (AE))

Ahriche_NTHEP2025.pdf

15 New results on $\phi$(1020) production from the NA61/SHINE experiment at CERN SPS

NA61/SHINE is a multi-purpose, fixed-target hadron spectrometer at the CERN SPS. Its research program includes studies of strong interactions as well as reference measurements for neutrino and cosmic-ray physics. A significant advantage of NA61/SHINE over collider experiments is its extended coverage of phase space available for particle production. This includes the entire projectile hemisphere of the collision, with no low-$p_\mathrm{T}$ cut-off.

The energy and system-size dependence of strangeness production plays an essential role in studies of the transition from confined to deconfined matter. At the same time, resonance production is a key observable to study the dynamics of colliding systems at high density. With its zero net strangeness and its valence structure composed predominantly of $s$ and $\bar{s}$ valence quarks, the $\phi$(1020) meson will not be sensitive to strangeness-related effects in a purely hadronic scenario, but will behave like a doubly strange particle in a partonic system.

This talk presents the first-ever results on $\phi$(1020) meson production in \emph{intermediate-size} systems at the CERN SPS, that is, central Ar+Sc collisions at beam momenta of 40$A$, 75$A$, and 150$A$ GeV/$c$ (\mbox{$\sqrt{s_\mathrm{NN}}$ = 8.8}, 11.9, and 16.8 GeV, respectively). The presented results include double-differential rapidity-$p_\mathrm{T}$ distributions, transverse mass spectra at midrapidity, $p_\mathrm{T}$-integrated rapidity spectra, mean multiplicities, and particle ratios. These are compared to data on Pb+Pb and $p$+$p$ collisions. A discussion of open and hidden strangeness production enhancement is included in the talk. Finally, a comparison with several microscopic models is shown, demonstrating their overall failure in describing these new measurements.

Speaker: Antoni Marcinek (Polish Academy of Sciences (PL))

marcinek_NTHEP_2025_09_16.pdf

16 Highlights from the Pierre Auger Observatory

The Pierre Auger Observatory is the world’s largest operating facility for ultra-high-energy cosmic ray (UHECR) detection, combining 1,660 surface water-Cherenkov detectors with 27 fluorescence telescopes in a hybrid design. With the ongoing AugerPrime upgrade, featuring new scintillator detectors and improved electronics, the Observatory is enhancing its sensitivity to primary mass composition. This contribution will cover key updates on the energy spectrum, the mass composition of primary particles, and the anisotropy in their arrival directions. The search for neutral particles, such as photons and neutrinos, has also advanced, setting more stringent upper limits. Radio detection is also emerging as a key complementary technique: early results from the radio detector demonstrate its potential for high-duty-cycle composition and energy measurements, especially for showers with zenith angles above 60 deg. In parallel, the Collaboration is expanding its open data program, with new public data releases, outreach tools, and educational resources aimed at fostering broader scientific engagement. This contribution summarizes the latest scientific findings from the Pierre Auger Observatory, with a focus on those presented at ICRC 2025, and outlines the future prospects enabled by the Auger Upgrade program.

Speaker: Laura Valore

Highlights_Auger_LValore.pdf

17 AugerPrime and the Onset of Phase II at the Pierre Auger Observatory

The upgrade of the Pierre Auger Observatory, known as AugerPrime, has been successfully completed, marking the beginning of Phase II data-taking. With the commissioning of the new components finalized,the Observatory is now fully operational and prepared to pursue its enhanced scientific goals. The Pierre Auger Observatory has already provided high-precision evidence for the suppression in the cosmic-ray energy spectrum above 4×10^{19}eV. However, the underlying origin of this spectral feature remains elusive. AugerPrime addresses this by enabling a more detailed analysis of extensive air showers through improved separation of their muonic and electromagnetic components. Additionally, direct measurements of the muon content at ground level will allow stringent tests of hadronic interaction models. In this presentation, we outline the completed commissioning activities and present the first results from Phase II. These early data confirm the seamless transition from Phase I to Phase II operations, establishing a robust foundation for the forthcoming scientific investigations.

Speaker: Dr Gabriella Cataldi (INFN Lecce - Italy)

14:00 Lunch break

Collider Physics (ATLAS, Higgs, VLQ): I. Chair: Andrzej Czarnecki, Co-chair: Alexander Cheplakov

18 ATLAS results on Higgs Physics and Electroweak Symmetry Breaking

This talk presents recent precision measurements of key properties of the Higgs boson using the full dataset of proton-proton collisions at √s = 13 TeV and 13.6 teV collected during Run 2 and Run 3, respectively, of the LHC by the ATLAS experiment. Highlights on Higgs cross sections, couplings and di-Higgs searches will be discussed.

Speaker: Flera Rizatdinova (Oklahoma State University (US))

Flera Rizatdinova .pdf

19 Critical Phenomena in Hadronic and DIS Processes

We compare the critical phenomena (e.g. phase transitions, crossover) in proton-proton, proton-nucleus scattering and in lepton-proton deep inelastic scattering (DIS) systems.

Notes: arXiv: 2508.15409 [hep-ph] and submitted for publication in Phys. Lett. B.

Speaker: Prof. CARLOS MERINO

NTHEP2025_CarlosMerino_16Sept2025.pdf

16:10 Coffee break

Collider Physics (ATLAS, Higgs, VLQ): II. Chair: Carlos Merino, Co-chair: Flera Rizatdinova

20 Stress-energy tensor in bound states

In this talk, we re-examine the recent claim that a Dirac particle freely falling in a uniform gravitational field exhibits a spin-dependent transverse deflection (gravitational spin Hall effect). Using a circulating-mass model, we show that an object with angular momentum carries a hidden momentum, which leads to a mismatch of the conventional relation between the canonical momentum and the velocity operator. With this observation, we show that the previously reported drift is entirely due to a nonzero initial velocity arising from the velocity operator, even when the canonical momentum expectation vanishes. We conclude, therefore, that this drift should not be interpreted as a gravitational spin Hall effect.

Speaker: Andrzej Czarnecki

21 Highlights of the ATLAS detector upgrade

The High-Luminosity LHC (HL-LHC) physics programme will be critical to deepening our understanding of fundamental physics, enabling us to probe the Standard Model with extreme precision and search for new physics using a vast array of data.
Achieving these goals under HL-LHC environment requires unprecedented detector technologies in terms of radiation hardness, high detection granularity and resolution, precision track timing, and powerful triggers.
ATLAS Collaboration is implementing an ambitious upgrade program which includes installation of the new all-silicon inner tracking detector, the new high-granularity timing detector, upgrade of the muon spectrometer and readout electronics of detector subsystems.
An overview of the upgrade activities in the ATLAS experiment will be presented in the talk.

Speaker: Alexander Cheplakov

A. Cheplakov.pdf

22 ATLAS Tile Calorimeter Phase-II Upgrade: current status and electronics certification with Portable Readout Module ”PROMETEO”

The High-Luminosity LHC (HL-LHC) will extend the physics reach of the ATLAS experiment, bringing new opportunities for discovery and measuring the properties of particles. To achieve this, the HL-LHC requires a complete upgrade of the ATLAS detector, including its Tile Calorimeter (TileCal). TileCal is a sampling hadronic calorimeter covering the central region of the ATLAS experiment in a pseudo rapidity range of |η| < 1.7. It consists of thin steel plates and about 460,000 scintillating tiles configured into 5182 cells, each viewed by two photomultipliers (PMTs).
The Phase-II upgrade of TileCal will include a complete replacement of its on- and off-detector electronics, as well as 10% of the PMTs in most exposed regions. PMT signals from every TileCal channel will be digitized and sent directly to the back-end electronics, where the signals are reconstructed, stored, and sent to the first level of trigger at a rate of 40 MHz. This will provide better precision of the calorimeter signals used by the trigger system and will allow the development of more complex trigger algorithms.
This large-scale replacement presents a considerable challenge in terms of testing and certification of the new electronics. To address this, the Portable ReadOut ModulE for Tile Electronics (PROMETEO) system has been developed as a portable tool for testing and certifying both the on- and off-detector electronics.
While PROMETEO was originally designed primarily for electronics certification, research and development efforts have revealed a clear need for fast and precise optical testing of both the current and new PMTs. As a result, future developments of PROMETEO will incorporate optical measurement capabilities, including the ability to measure relative quantum efficiency and dark current for all the PMTs.
This talk will present the current status of the TileCal Phase-II upgrade project, along with expected performance characteristics. In addition, the PROMETEO system for testing and certifying of new electronics and its future enhancements will be discussed.

Speaker: Pavle Tsotskolauri (Ivane Javakhishvili Tbilisi State University (GE))

New Trends in High-Energy Physics 2025.pdf

18:05 Photo session

18:20 Banquet

Wednesday 17 September

Neutrino & Astroparticle Physics, Gravitational Waves, Neutron Stars: I. Chair: Mahboubeh Shahrbaf Motlagh Co-chair: Cheuk-Yin Wong

23 Recent results from KM3NeT

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 Toulon at a depth of about 2500 meters hosts ORCA (Oscillation Research with Cosmics in the Abyss) telescope. KM3NeT-It is located offshore from Sicily at a depth of about 3500 meters and hosts ARCA (Astroparticle Research with Cosmics in the Abyss) telescope. Both KM3NeT telescopes are three-dimensional arrays of pressure-resistant digital optical modules, KM3NeT DOMs [2], each with 31 photomultipliers (PMT) for detecting Cherenkov light produced when relativistic particles from neutrino interactions travel through sea water. KM3NeT DOMs are mounted on a flexible vertical string called detection unit (DU). Each DU supports 18 DOMs and is anchored at the seabed. 115 KM3NeT DUs are forming so called building block. KM3NeT/ARCA with 2 building blocks is optimised for the detection of high-energy cosmic neutrinos in the TeV–PeV range. ARCA DOMs are approximately equally spaced on strings that are about 700 m long, and spaced about 90 m apart. KM3NeT/ORCA is comprised of a single building block with more closely spaced DOMs and optimised for the detection of neutrinos in the GeV range. ORCA strings are 200 m long with 9 m spacing between DOMs and about 20 m between DUs. Currently (September 2025) KM3NeT/ARCA is in operation with 51 DUs and KM3NeT/ORCA is taking data with 28 detection units.
Data taking and analysis with partial configurations of ORCA and ARCA telescopes started since deployment of first detection lines. Recent results obtained with these configurations include measurement of neutrino oscillation parameters [3] and atmospheric νμ flux [4] with the first six detection units of KM3NeT/ORCA and observation of the highest energy neutrino with 21 detection units of the KM3NeT/ARCA telescope [5].

References
1.KM3NeT Collaboration, “Letter of intent for KM3NeT 2.0”, J. Phys.G 43 (2016) 8, 084001
2.KM3NeT Collaboration, “The KM3NeT multi-PMT optical module”, JINST 17 (2022) P07038
3.KM3NeT Collaboration, “Measurement of neutrino oscillation parameters with the first six detection units of KM3NeT/ORCA”, JHEP 10 (2024) 206
4.KM3NeT Collaboration, “Measurement of the atmospheric νμ flux with six detection units of KM3NeT/ORCA”, Eur.Phys.J.C 85 (2025) 871
5.KM3NeT Collaboration, “. Observation of an ultra-high-energy cosmic neutrino with KM3NeT”, Nature 638 (2025) 8050, 376

Speaker: Revaz Shanidze (Tbilisi State University)

Batumi_NTHEP2025_Shanidze.pdf

24 Status of JUNO

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 scintillator target contained in a transparent acrylic sphere, instrumented with ~17,600 20-inch PMTs and ~25,600 3-inch PMTs. The primary goal of JUNO is to resolve the neutrino mass ordering with $3\sigma$ level within 6-7 years of data taking, while improving the precision of the oscillation parameters $\sin^2\theta_{12}$, $\Delta m^2_{21}$, and $\Delta m^2_{31(32)}$ to the sub-percent level. Its large target will also enable world-leading measurements of geoneutrinos, solar neutrinos, and neutrinos from supernova bursts, and will provide opportunities to search for rare processes such as proton decay and dark matter interactions, thanks to its large target. Construction of the detector was completed at the end of 2024; following several months of liquid scintillator filling and commissioning of all the systems, the physics data taking began on August 26. This talk will highlight JUNO’s physics reach and the performance achieved during the commissioning phase.

Speaker: Yury Malyshkin

2025-09-17 [NTHEP Batumi] Status of JUNO.pdf

11:00 Coffee break

Neutrino & Astroparticle Physics, Gravitational Waves, Neutron Stars: II. Chair: Revaz Shanidze, Co-chair: Yury Malyshkin (Online section)

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

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 using a non-local Nambu-Jona-Lasinio model with a smooth crossover.
Sexaquark–baryon repulsion is implemented via an effective mass shift.
We find that including sexaquarks softens the equation of state while remaining consistent with multi-messenger constraints from NICER, gravitational waves, and the lightest and heaviest observed neutron stars.
Our results further suggest that light sexaquarks suppress the emergence of hyperons.
Bayesian analysis favors a sexaquark mass in the range 1890–1935 MeV, pointing to its potential relevance for neutron star interiors and gravitational-wave asteroseismology.

Speaker: mahboubeh shahrbaf motlagh

Batumi_Georgia_Sep_2025_New_Trends_in_High_Energy_Physics.pdf

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

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 it, thereby modifying the observable properties of the star. Considering astrophysical constraints on maximum mass, radius, and tidal deformability, we examine the bosonic DM parameter space and its fraction within the mixed object. By varying the DM particle mass, self-coupling constant, and DM fraction, we show that the formation of a DM core or halo may violate existing limits on NS properties, leading to stringent constraints on the DM parameters. Furthermore, as a novel method to probe DM halo formation around NSs using X-ray observations, we apply pulse-profile modeling of X-ray pulsars. Our results indicate that, depending on the compactness of the mixed object, the minimum flux of the pulse profile can be significantly altered, offering a promising avenue to investigate DM signatures in NSs.

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

Davood_Rafiei.pdf

27 Long-Baseline Neutrino Physics: The NOvA Experiment

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 from a beam of muon neutrinos that was originally pure. NOvA uses the NuMI beam and two finely segmented liquid-scintillator detectors: one near detector at Fermilab and a 14-kiloton far detector 810 km away at Ash River, Minnesota. It analyzes oscillations in both neutrino and antineutrino modes. Recent findings from NOvA support the conventional neutrino mass ordering and enhance the precision of oscillation parameters, consequently offering significant insights into the characteristics of neutrino mixing and mass hierarchy.

Keywords: Anti-Neutrinos, Neutrinos, Neutrino Oscillation, NOvA, NuMI Beam.

Speaker: Saleh ABUBAKAR (Erciyes University)

Long-Baseline Neutrino Physics The NOvA Experiment.pdf

13:00 Lunch break

Neutrino & Astroparticle Physics, Gravitational Waves, Neutron Stars: III. Chair: Lali Kalandadze, Co-chair: Tamar Berberashvili

28 From Matter to Light: Unveiling Neutrino Non-Standard Interactions

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 anomalous magnetic moment. The promising new possibilities for probing neutrino NSI and electromagnetic properties in future experiments from terrestrial experiments and astrophysical considerations will also be discussed. This talk will be based on results obtained in hep-ph 2303.13572, 2203.01950, 2104.03291, 2407.06251, and 2007.04291.

Speaker: Sudip Jana (Harish-Chandra Research Institute)

NTHEP25.pdf

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

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 a flux tube in the physical world in (3+1)D, similar to the case of a QCD-confined $q\bar q$ open string QCD meson? If so, the QED-confined $q\bar q$ bosons may show up as neutral QED mesons in the mass region of many tens of MeV (PRC81(2010)064903 & JHEP2020(8)165). Is there any experimental evidence for the existence of such QED mesons? The observations of the anomalous soft photons, the anomalous X17 particle at $\sim$17 MeV from ATOMKI (PRL116,042501(2016), HUS (arxiv:2401.11676), and PADME (arxiv:2401.11676), and the anomalous E38 particle at $\sim$38 MeV from Dubna (arxiv:2311.18632) may provide possible experimental evidence for the existence of such QED mesons. Further confirmation and investigations on the X17 and E38 particles will shed definitive light on the question of quark confinement in QED in (3+1)D. Implications of quark confinement in the QED interaction will be discussed.

Speaker: Dr Cheuk-Yin Wong (Oak Ridge National Laboratory)

CYWongBatumiSept2025.pdf

30 Q-balls in Polynomial Potentials

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 various analytical approximations. We highlight some surprising universal features of Q-balls that barely depend on the details of the potential. The polynomial potentials studied here can be realized in renormalizable models involving additional heavy or light scalars, as we illustrate with several examples.

Speaker: Mikheil Sokhashvili

2025 - New Trends - Mikheil.pdf

2025 - New Trends - Mikheil.pptx

31 Opening up baryon number violating operators

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 the commonly discussed dimension-six operators. To facilitate studies of this ginormous and scarcely explored testable operator landscape we provide the exhaustive set of tree-level UV completions for non-derivative baryon-number-violating operators in this Standard Model effective field theory up to mass dimension 15, which corresponds roughly to the border of sensitivity. In addition to the known Standard Model fields we also include right-handed neutrinos in our operators.

Speaker: Diana Sokhashvili

Diana Sokhashvili.pdf

Diana Sokhashvili.pptx

15:40 Coffee break

Applied / Plasma / Instrumentation: Chair: Larry McLerran, Co-chair: Elena Bratkovskaya

32 Laser-Induced Breakdown Spectroscopy Plasmas as a Testbed for Non-Equilibrium Plasma Modeling in High-Energy Physics Applications

Laser-Induced Breakdown Spectroscopy (LIBS) provides a powerful platform for elemental analysis; however, the accuracy of quantitative results is often limited by the non-uniform and temporally unstable behavior of laser-induced plasmas (LIP). In particular, ionization–recombination dynamics strongly influence emission spectra and require models that incorporate both deterministic evolution and stochastic fluctuations.
In this work, we present a combined modeling framework for LIBS plasmas, employing deterministic simulations via Runge–Kutta integration and stochastic differential equations solved with the Euler–Maruyama algorithm. Plasma parameters, such as electron temperature and electron density, were extracted from experimental spectra of metallic samples (Al, Cu, brass, Pb, stainless steel, Ti) using Stark broadening and Boltzmann plots. The results show that stochastic fluctuations significantly alter ion population dynamics, and their inclusion improves the accuracy of plasma diagnostics compared with purely deterministic approaches.
Beyond analytical chemistry, these findings are directly relevant for high-energy physics applications, where laser-induced plasmas serve as a laboratory for testing non-equilibrium plasma models. The developed methodology provides a robust approach for studying ionization balance, plasma instabilities, and line-shape diagnostics, which are critical for large-scale projects such as accelerator technologies and detector development.

Acknowledge
This work was supported by the following research grants:
1. Research on Laser-Induced Plasma (LIP) Based on High-Resolution Spectroscopic Analysis: Methodology, Hardware Integration, and Applications, funded under the Young Researcher Program of Batumi Shota Rustaveli State University (BSU) Academic Council Resolution No. 06-01/33 (April 7, 2025). Project manager: Jaba Shainidze; Mentor: Prof. Nugzar Gomidze.
2. Shota Rustaveli National Science Foundation of Georgia (SRNSFG) [FR-24-3101]

Speaker: Nugzar Gomidze (Batumi Shota Rustaveli State University)

LIPS Gomidze+.pdf

33 Boundary value solution of viscous liquid flow in carbon nanotubes for application in spintronics

Spin Polarization in Carbon Nanotubes (CNTs) is an advanced topic at the intersection of nanotechnology, quantum physics, and spintronics. It refers to the imbalance in the population of spin-up and spin-down electrons in a system. In spintronic devices, this property is used to encode information using electron spin, instead of or in addition to charge. CNTs are ideal for spintronics: because of low spin-orbit coupling (Spin states persist longer), weak hyperfine interactions (especially in 12C, which has no nuclear spin), ballistic transport of electrons travelling long distances without scattering and quantum coherence supporting via quantum states 1. Carbon nanotubes are cylindrical structures made of rolled-up graphene sheets, and are excellent one dimensional conductors.
Elaborate experimental setup (Figure) combined with ferromagnetic electrodes is based on spin valve effect (change of resistant between contacts) and tunneling contacts.

Presenting Theoretical model includes estimation of effectiveness of carbon nanotubes for accelerating the spin-polarized current as well as a boundary value problem relative to the flow velocity of fluid. [2]. This approach has been stated considering main peculiarities of the problem, in particular, taking into account Debye electric double layer and external friction (friction between viscous fluid and nanotube wall). Solution of assigned boundary problem has been determined in the form of infinite series.

References:
1. Paata J. Kervalishvili, Development of Laser Plasma Method for Spintronics and Spinquant 2D Structures. Book of Abstracts “Physics of light‒matter coupling in nanostructures”, edition of the 24th conference, 9‒13 April 2024, Tbilisi, Georgia.
2. Tamar Berberashvili, Vakhtang Gogichaishvili, Paata Kervalishvili, Formulation and solution of boundary value problem of viscous liquid flow in nanotube taking into account external friction. Nanotechnology 2024, Tbilisi, October, 2024, Georgian Technical University.

Speaker: Tamar Berberashvili (Georgian Technical University)

Tamar Berberashvili.pdf

Tamar Berberashvili.pptx

34 HELICALLY WOUND SUPERCONDUCTING CABLE PRODUCTION SYSTEM

This study presents an advanced production system for helically wound superconducting cables based on Conductor on Round Core (CORC) technology. The developed system addresses critical challenges in high-current applications (such as power transmission, fusion reactors, and space technologies) by combining modular design with precision engineering solutions. In particular, it is directly applicable to the production of superconducting magnets required for particle accelerators and high-energy detector systems.
Key innovations of the system include an adjustable tension control mechanism (with a range of 10–20 Nm), multi-axis synchronization (8-axis motion control), and configurable winding parameters (helix angle between 10°–75°, diameter range of 6–25 mm). The production platform integrates 16 independent tensioning units and offers three-dimensional magnetic force measurement capability up to 20 Nm ±0.1 through integrated levitation tests.
Experimental results confirm the system’s ability to produce superconducting cables that minimize mechanical deformation while maintaining industrial quality standards. These technological advancements contribute to overcoming global manufacturing challenges in superconducting applications, enhance production precision for next-generation cable systems, and provide a solid foundation for integration into large-scale infrastructure projects
in high-energy physics.

Speaker: Dr Yasin Karan (Recep Tayyip Erdoğan University)

HELICALLY WOUND SUPERCONDUCTING CABLE PRODUCTION SYSTEM Batum.pdf

35 Magneto-optical properties in the transparency range of implanted Ferrite-Garnet thin films

Ferrite-Garnet thin films exhibit peculiar magneto-optical properties, which make them highly relevant for both fundamental research and advanced technological applications in optics, magnetism, electronics, spintronics, and photonics. In this perspective, the practical importance is given to the magneto-optical properties of ion-implanted ferrite-garnet films, as ion implantation weakens cylindrical magnetic domains, and subsequently contributes to better utilization of their parameters.
We investigated the magneto-optical Kerr effect in the range of incident light quantum energy of 0.5-4.5 eV before and after ion-implantation of ferrite-garnet films for different compositions (YBiCaSmLu)₃(FeGeSi)₅O₁₂, (YBiCa)₃(FeGe)₅O₁₂, and (YBiCaSm)₃(FeGeSi)₅O₁₂. It has been established that ferrite-granite thin films exhibit interesting magneto-optical properties in the energy range of incident light quanta of 0.5-2.2 eV. In particular, under certain experimental conditions, magneto-optical activity is observed when the plane of polarization of the incident light deviates from the P-component. To clarify the nature of this effect, the polar Kerr effect and magnetization processes in the energy range of incident light quanta of 0.5-2.2 eV, which is the transparency region of ferrite-granite, were studied. The obtained results confirm that in this region, magneto-optical activity is characteristic of all three compositions of ferrite-granite, and implantation has virtually no effect on their magneto-optical properties.
This work was supported by Shota Rustaveli National Science Foundation of Georgia (SRNSFG) [grant number FR-24-3101]

Speaker: Lali Kalandadze (Batumi Shota Rustaveli State University)

LALI-BSU.pdf

LALI-BSU.pptx

Thursday 18 September

Hadron Structure, Proton Scattering, Holographic QCD: II: Chair: Andrei Poblaguev, Co-chair: Istvan Szanyi

36 New Understanding of the Phase Diagram of QCD

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 phase with confined glueballs and approximately deconfined quarks is realized followed by a phase with deconfined quarks and gluons. The temperatures for these transitions are approximately 160 MeV and 300 MeV. At 160 MeV, chiral symmetry is restored. The relation to Quarkyonic matter is elaborated.

Speaker: Larry McLerran

SQGB-batumi.pdf

37 Collectivity in small systems measured by charm and bottom hadrons

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 generator we show that these features can be quantitatively understood, for beauty hadrons as well as for charm hadrons, if one assumes that also in pp collisions a plasma of quark and gluons (QGP) is created when the energy density exceeds the same critical value as employed in heavy-ion collisions. We discuss as well the dependence of these observations on the measured charged particle multiplicity and the energy loss of heavy quarks in the QGP as well as how the spectrum reflects the different QCD production mechanisms. We present finally a proposition how the energy loss of heavy quarks in a QPG can be experimentally measured, using pp and OO collsions, and separated from the momentum change due to hadronization.

Speaker: Joerg Aichelin

Batumi Aichelin.pdf

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

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 is matched to reproduce the equation-of-state of the partonic system above the deconfinement temperature $T_C$ from lattice QCD. We evaluate transport coefficients at finite $\mu_B $, in particular the specific shear viscosity and ratio of electric ($\sigma_{QQ}/T$), baryon ($\sigma_{BB}/T$) and strange ($\sigma_{SS}/T$) conductivities to temperature based on the elastic interaction rate with resumed interactions. The contribution of inelastic $2\to$ 3 reactions with gluon radiation to the relaxation time, $\hat q$ is evaluated.
The dynamical description of strongly interacting matter out-off equilibrium, as created in heavy-ion collisions, is based on the off-shell transport approach Parton-Hadron-String-Dynamics (PHSD), which covers the full evolution of the system during heavy-ion collisions on a microscopic level. The PHSD explicitly propagates off-shell hadronic and partonic (based on DQPM) degrees-of-freedom, including their interactions based on Kadanoff-Baym theory, which allows to realize a phase transition by obeying all conservation laws and quantum numbers on a microscopic basis. The PHSD approach offers a good description of experimental data on hadronic and electromagnetic observables over a wide energy range, from hundreds of MeV to tens of TeV.
We discuss experimental observables that provide insight into the inertia of strongly interacting matter under extreme conditions created in heavy-ion collisions. In particular, we present results obtained within the PHSD approach for dilepton production in heavy-ion, proton-proton, and proton-nucleus reactions, covering invariant energies from one GeV (SIS) up to several TeV (LHC).

Speaker: Elena Bratkovskaya (GSI, Darmstadt)

Elena_Bratkovskaya_Batumi_Sep2025.pdf

39 Signatures of Clustering in Multiplicity Fluctuations in Heavy-Ion Collisions

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 dynamic variance Ω and study its dependence on the size of colliding systems. We connect the observed system-size dependence of multiplicity fluctuations with the clustering phenomena and the finiteness of the hadronizing sources and the thermal bath.

Speaker: Ali Soheilbeigi Bazgir (Jan Kochanowski University (PL))

12:10 Coffee break

Hadron Structure, Proton Scattering, Holographic QCD: III: Chair: Joerg Aichelin, Co-chair: Trambak Bhattacharyya

40 Leptons as Possible Qubits for Quantum Computing

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.
While most quantum computing research focuses on electron spins or superconducting circuits, leptons—with their well-defined quantum properties like spin and weak charge—could offer unique advantages, such as inherent isolation from decoherence or novel interaction mechanisms. Key challenges might include controlling high-energy leptons (e.g., muons) and mitigating decay processes, but theoretical frameworks like neutrino oscillations or solid-state lepton confinement could open new pathways.
Among advantages of leptons as qubits there are: Leptons are underexplored compared to photons, ions, or superconducting qubits; Natural quantum properties (spin, weak interactions) and potential isolation; Stability (e.g., muon decay), control, and scalable fabrication. Links to neutrino physics, high-energy systems, or error-resistant encodings.
At the same time leptons (electrons, muons, taus, neutrinos) offer unique quantum properties that could be harnessed for quantum computing playing a role of: Spin Qubits - Electrons in quantum dots or donor atoms, e.g., phosphorus in silicon which are already used as spin qubits [1,2]; Charge Qubits: Electrons in superconducting circuits (transmons) dominate current quantum computing efforts [3,4]; Muons and Tau Leptons - Muon Spin Resonance (µSR): Neutrino Qubits - Neutrinos oscillation between flavors (electron/muon/tau), suggesting a natural basis for quantum state encoding; Muons/Taus: Short lifetimes (muons: ~2.2 µs; taus: ~0.3 ps) make them impractical for most quantum computing architectures.
Leptons interact via the weak force, which could enable intrinsically decoherence-resistant qubits if isolated from electromagnetic noise. Their stability and decoherence are based on Muons/Taus’s short lifetimes (muons: ~2.2 µs; taus: ~0.3 ps) make them impractical for most quantum computing architectures. However Superconducting qubits, trapped ions, and photonics already offer better coherence times and control [5].
Main prospectives for the future developments: Muon Catalyzed Fusion + Qubits: muons transiently mediate interactions between qubits. Neutrino-Based Quantum Communication: Hypothetical "neutrino entanglement" for long-range quantum networks; Lepton-Doped Materials: Embedding muons in lattices to study coherence effects.

References:

1. P Kervalishvili. “Nuclear spin based model of quantum information system”. Book of abstracts of International conference of Nanosensory Systems and Nanomaterials, June 6-9, 2013, EU-ISTC-GTU, Tbilisi, Georgia (2013): 28-31.
2. Daniel Loss, and David P. DiVincenzo. Quantum computation with quantum dots. Phys. Rev. A 57, 120 – Published 1 January,(1998). DOI: https://doi.org/10.1103/PhysRevA.57.120.
3. Barenboim, G., Ternes, C.A.Tórtola, M. New physics vs new paradigms: distinguishing CPT violation from NSI. Eur. Phys. J. C 79, 390 (2019). https://doi.org/10.1140/epjc/s10052-019-6900-7
4. Philip Krantz, Morten Kjaergaard, Fei Yan, Terry P. Orlando, Simon Gustavsson, William D. Oliver. A Quantum Engineer's Guide to Superconducting Qubits. arxiv logo, quant-ph.arXiv:1904.06560 last revised 7 Jul (2021)
5. Paata J Kervalishvili. “Leptons Based Quantum Computing". Acta Scientific. Computer Sciences 5.7 (2023): 12-14.

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

Kervalishvili 2.pdf

41 Structures in elastic and single diffractive scattering of protons

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 extending the well-known dipole pomeron (DP) model – successful in describing elastic proton-proton scattering – to SD, a dip-bump structure in the t-distribution of the SD process is predicted in the range of 3 GeV2 ≲ |t| ≲ 7 GeV2 at LHC energies. Apart from the dependence on s (squared center of mass energy) and t, the dependence on the diffractively produced mass (M) is predicted. Resonance structures in the M-distribution are discussed.

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

Slides_New_Trends_Batumi_2025_Szanyi.pdf

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

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 known jet polarization, $P_\text{jet} \approx 96 \pm 0.1\%$, simultaneous measurements of beam- and target-spin-correlated recoil proton asymmetries enabled determination of the beam polarization with low systematic uncertainty, $\sigma_P^\text{syst}/P \lesssim 0.5\%$.

In addition, the single-spin $A_\text{N}(t)$ and double-spin $A_\text{NN}(t)$ analyzing powers were precisely measured at $|t| < 0.02\,\text{GeV}^2$ for two beam energies, 100 and 255 GeV, facilitating a reliable extraction of the corresponding hadronic spin-flip amplitudes. HJET also performed effectively with nuclear beams, allowing routine measurement of $\mathit{p^{\uparrow}A}$ analyzing powers during RHIC heavy-ion runs without interfering with collider operations.

For 100\,GeV/nucleon beams, $A_\text{N}^{\mathit{pA}}(t)$ was measured for a variety of nuclei: $^2$H$^+$ (deuteron), $^{16}$O$^{8+}$, $^{27}$Al$^{12+}$, $^{96}$Zr$^{40+}$, $^{96}$Ru$^{44+}$, and $^{197}$Au$^{79+}$. These results provide a detailed test of spin effects within the Glauber model framework. Notably, for heavy-ion beams, the observed $A_\text{N}^{\mathit{pA}}(t)$ may be significantly influenced by diffraction, Coulomb corrections (including magnetic photon exchange), and nuclear breakup effects. Preliminary results assessing the consistency of HJET's $A_\text{N}(t)$ measurements with theoretical expectations will be presented.

Speaker: Andrei Poblaguev

2025.09.18_NewTrends2025.pdf

14:05 Lunch break

15:00 Excursion

Friday 19 September

Open Session: Closing

Zoom link for online listeners:
https://bsu-edu-ge.zoom.us/j/6103028564 (Passcode: 266786)