We report the search for a magnetic monopole using the 2743-day exposure cosmic-ray triggered data collected by the NOvA far detector, which is a 14kt high segmented liquid scintillator detector designed primarily to observe GeV-scale electron/muon neutrinos. The small overburden of the far detector helps us to extend the search to the low mass region that has been unexplored previously where...
The $e^+e^-\to\eta\gamma$ cross section is measured in the center-of-mass energy range from 980 MeV to 1060 MeV in the experiment with the SND detector at the VEPP-2000 $e^+e^-$ collider. The measurement is carried out in the $\eta\to2\gamma$ decay mode. It is based on data with an integrated luminosity of $73pb^{-1}$, recorded in 2018 and 2024, which exceeds statistics used for earlier...
The observation of hidden-charm pentaquark states by the LHCb collaboration in 2015, as a result ofย amplitude analysis of $\Lambda_b^0 \rightarrow J/\psi p K^โป$ decays, marked a significant breakthrough in exotic hadron spectroscopy. Independent confirmation of these states is now essential, alongside an assessment of how potential contributions from $Z_{cs}$ states might affect their...
The aim of this work is a comparative study of ฯ(1020) for the BM@N experiment. Both Monte-Carlo and experimental data were analyzed. Several distributions were considered during this process: residuals of the ToF400 and GEM detectors, number of tracks in the primary vertex and the number of hits per track for the two products of decay of ฯ(1020). Afterwards, necessary corrections were applied...
In heavy-ion collisions at kinetic beam energies of several GeV per nucleon, a dense, strongly interacting matter is created, with properties similar to neutron star interiors. By studying experimental observables, the equation of state (EOS) of this matter, which relates pressure, temperature, and density, can be extracted. Collective flow patterns, particularly directed flow, are highly...
The fixed target experiment BM@N is the first operational experiment at the NICA accelerator complex. One of the main physics goal of the experiment is study of production of hyperons and hypernuclei. This work is devoted to reconstruction the 3HL and 4HL hypernuclei in two-particle meson decays. A V0 reconstruction algorithm is proposed, the selection of geometric constraints is optimized and...
The search for glueballs โ colorless bound states of gluons โ is one of the most important tasks within the modern QCD. While parameters of glueballs are predicted under a wide range of models, their experimental observation is extremely difficult due to the mixing with the conventional mesons. Glueballs are predicted to be abundantly produced in glue-rich processes, such as charmonia decays....
The NA64 experiment at the CERN SPS is designed to search for dark photons in events with missing energy. The most studied production mechanism is dark Bremsstrahlung through a vector mediator. Bremsstrahlung photons can convert to hard vector mesons in exclusive photoproduction processes, which then decay to dark matter (DM). The vector meson decays invisibly to DM via mixing with the dark...
We study hydrodynamic effects in the measurements of bulk properties of the matter produced in Au+Au collisions at $\sqrt{s_{NN}}=7.7$ GeV using identified hadrons ($\pi^{\pm}$, $K^{\pm}$, $p$ and $\bar{p}$) with EPOS4, SMASH and PYTHIA8 models. Midrapidity ($|y| < 0.1$) results for invariant particle yield, average transverse momenta and particle ratios, in dependence of various collision...
This report presents a measurement of the double-differential cross sections of neutron production in $^{124}\text{Xe}$ + CsI collisions at a beam energy of 3.8 A GeV. The experiment was performed at the BM@N facility using a compact TOF neutron spectrometer with stilbene scintillators coupled with a set of SiPMs. Data were acquired at laboratory angles of 95ยฐ, 110ยฐ, and 121ยฐ for neutron...
Today, photon pair production is the subject of active experimental and theoretical studies. This process has a number of unique features that make it an important tool for physical analysis. In this work we calculate differential cross sections for pair production of isolated photons within the parton Reggeization approach (PRA) [1] at energies of 1.96, 7, and 13 TeV. The calculations were...
An analysis is presented concerning the search for the associated production of a Higgs boson with a single top quark (tH), a process highly sensitive to the complex phase of the top-quark Yukawa coupling. The analysis uses the full 140 fbโปยน of ATLAS data at โ๐ = 13 TeV, targeting Hโbb, WW, ZZ, ฯฯ decays. Advanced multivariate analysis techniques were employed to achieve optimal sensitivity...
BM@N is the first operating fix-target experiment at the NICA collider facility at JINR. BM@N is using ion beams from the Nuclotron accelerator ring to study the properties of cold dense baryonic matter.ย In 2017 the physics program of BM@N was enriched by studies of Short-Range Correlations (SRC) in carbon nuclei. SRC are specific nucleon configurations, where nucleons are separated by a...
T2K is a long-baseline accelerator neutrino experiment in Japan. It is aimed at high-precision measurements of the neutrino oscillation parameters and as well probes CP violation in the lepton sector with a high-purity muon (anti)neutrino beam. The leading systematic uncertainties arise from the description of the neutrino-nucleus interactions and are largely constrained by the measurements...
This work aims at study of heavy neutral leptons, or heavy neutrinos ($N$), in the mass range $m_N$ < $493 \, \text{MeV}/c^2$ [1]. Heavy neutrinos can be produced in $K^\pm$ and $\pi^\pm$ decays $M^\pm \rightarrow l_\alpha^\pm N \, (M=\pi,K;\,\alpha=e,\mu)$ in the T2Kโs standard neutrino beam. Then, these particles decay in the near detector ND280. Considered decays of heavy neutral leptons in...
Baikal-GVD is a cubic kilometer-scale neutrino detector currently under construction in Lake Baikal, Russia. The detector has been taking science data in partial configurations since 2016 and is now 70% complete. We present a search for astrophysical point-like neutrino sources using track-like events collected by Baikal-GVD during the seasons 2019-2023. No significant neutrino source has been...
A Highly Granular time-of-flight Neutron Detector (HGND) is currently under development for the BM@N experiment to measure the yields and flow of neutrons with energies of 0.3โ4 GeV [1]. To validate the concept of the full-scale HGND, a compact HGND prototype was constructed and tested in collisions of Xe projectile with energy of 3.8A GeV with a CsI target at the BM@N experiment [2]. Kinetic...
In December, 2022 - January, 2023 the BM@N experiment conducted
its first physics run with full detector configuration. Over 500 million
events of Xe+CsI interactions with the Xe beam kinetic energy of
3.8A GeV ($\sqrt{s_{NN}} = 3.3 GeV) were collected.
At the present time, the data analyses are underway.
The current status of the strange particle ($\Lambda$ hyperons
and $K^0_S$...
Understanding the properties of strongly interacting matter, especially its Equation of State, in the regime of high net-baryon density is one of the goals in the physics of relativistic heavy-ion collisions. One powerful probe is directed flow, which is highly sensitive to the pressure gradients in the evolving system. Light clusters, like deuterons, are expected to provide a stronger signal...
This talk addresses the challenge of particle identification (PID) in the SuperFGD detector, a highly granular scintillator target that is a central component of the upgraded ND280 near detector in the T2K neutrino experiment. Precise PID is essential for reconstructing neutrino interactions and reducing systematic uncertainties in T2K's oscillation measurements. The SuperFGD comprises...
The main goal of beam energy scan programs in heavy-ion collisions is to investigate the equation of state (EoS) and explore possible phase transitions in strongly interacting matter. Anisotropic flow, quantified from the azimuthal distributions of produced particles, is a key observable in this context. Beyond single-harmonic measurements, correlations between different flow harmonics provide...
Rare vector boson scattering (VBS) processes are of particular interest for testing the Standard Model and searching for possible new physics. However, their experimental study is challenging because of the need to isolate a weak signal against the background of much more probable processes, such as the production of vector boson pairs via diagramms with presence of strong interactions (QCD),...
Collective flow and global polarization are the key observables for characterizing properties of strongly-interacting matter in relativistic heavy-ion collisions at NICA energies. A significant challenge for the MPD experiment is achieving the necessary statistical precision for these measurements, particularly for direct photons, $\phi$-mesons, and $\Sigma,\Lambda$ hyperons. To address this,...
The accuracy of extracted neutrino oscillation parameters in accelerator-based neutrino experiments depends on the precision of neutrino-nucleus scattering models implemented in neutrino event generators. The goal of this study is to asses the accuracy of the GENIE event generator with electron scattering data. To do this we carry out a comparison of the charged-current quasielastic CCQE...
The momentum spectra of charged hadrons reflect the kinetic freeze-out conditions in nuclear collisions. Analysis of these spectra enables quantitative extraction of the system's thermodynamic parameters. The anisotropic flows probe the system's collective behavior and its evolution from initial spatial anisotropy to final momentum-space correlations.
In this work, the...
