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D. Idrisov

Publications and source records attributed to D. Idrisov.

6 recordsLinked to original sources
arXiv2026

Reconstruction of the Impact Parameter in Nucleus-Nucleus Collisions at the MPD Experiment

Event classification by centrality is one of the key tasks of the MPD (Multi-Purpose Detector) experiment at the NICA collider. Centrality characterizes the initial geometry of heavy-ion collisions through the correlation of measured observables with the impact parameter. Typically, charged-particle multiplicity serves as the observable of choice. However, this approach can introduce autocorrelation in net-proton multiplicity fluctuation studies. In this work, we propose a novel approach based on the combined use of signals from the forward hadron calorimeter (FHCal) and the electromagnetic calorimeter (ECal). This method is expected to suppress autocorrelation in the study of proton multiplicity fluctuations, while the combination of data from both detectors will enable unambiguous centrality event classification across the full centrality range.

hep-ex↗
arXiv2026

Production of {\Lambda} hyperons in 4.0A GeV and 4.5A GeV carbon-nucleus interactions at the Nuclotron

The BM@N experiment (Baryonic Matter at the Nuclotron) is the first fixed-target experiment at the JINR NICA accelerator complex. In this work, data on the interactions of a carbon-ion beam with kinetic energies of 4.0A~GeV and 4.5A~GeV with C, Al, Cu, and Pb targets are used to measure transverse momentum spectra and rapidity distributions of $\Lambda$ hyperon yields. The results are compared with the predictions of DCM-SMM, UrQMD, and PHSD transport models and with the $\Lambda$ yield measurements in other experiments at similar collision energies.

hep-ex↗
arXiv2025

A Two-dimensional Bayesian Approach to Centrality Determination in Nucleus-Nucleus Collisions

The determination of centrality in nucleus-nucleus collisions is a crucial task, as it enables the estimation of the impact parameter and thereby allows for the comparison of experimental results with predictions from theoretical models and other experiments. In this work, we present a two-dimensional approach for centrality determination based on a Bayesian framework. The observables used were the number of track hits and the deposited energy of spectators in the forward hadronic calorimeter. A distribution is proposed to describe the fluctuations of these two observables at a fixed impact parameter value. This distribution provides a more precise description of the observable distributions in both central and peripheral regions. The effectiveness of the proposed method was tested within a realistic BM@N simulation framework for Xe+CsI collisions at a beam energy of 3.8A GeV.

hep-ex↗
arXiv2025

Production of protons, deuterons and tritons in argon-nucleus interactions at 3.2 AGeV

Results of the BM@N experiment at the Nuclotron/NICA complex on the production of protons, deuterons and tritons in interactions of an argon beam of 3.2 AGeV with fixed targets of C, Al, Cu, Sn and Pb are presented. Transverse mass spectra, rapidity distributions and multiplicities of protons, deuterons and tritons are measured. The results are treated within a coalescence approach and compared with predictions of theoretical models and with other measurements

hep-ex↗
arXiv2024

The BM@N spectrometer at the NICA accelerator complex

BM@N (Baryonic Matter at Nuclotron) is the first experiment operating and taking data at the Nuclotron/NICA ion-accelerating complex.The aim of the BM@N experiment is to study interactions of relativistic heavy-ion beams with fixed targets. We present a technical description of the BM@N spectrometer including all its subsystems.

hep-ex↗