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Physics of Particles and Nuclei Letters最新文献

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Benefits of a Microkernel Architecture for Slow Control Systems Software in Research Activities: Case Studies from LHEP, JINR 研究活动中慢速控制系统软件的微内核架构的好处：LHEP的案例研究，JINR
IF 0.5
Physics of Particles and Nuclei Letters Pub Date : 2026-09-22 DOI: 10.1134/S1547477126700743
A. Kozlovsky, A. Bukharin, D. Ivliev, O. Melnikova, A. Noskov, Y. Smirnova, I. Shirikov, I. Zhabin
{"title":"Benefits of a Microkernel Architecture for Slow Control Systems Software in Research Activities: Case Studies from LHEP, JINR","authors":"A. Kozlovsky,&nbsp;A. Bukharin,&nbsp;D. Ivliev,&nbsp;O. Melnikova,&nbsp;A. Noskov,&nbsp;Y. Smirnova,&nbsp;I. Shirikov,&nbsp;I. Zhabin","doi":"10.1134/S1547477126700743","DOIUrl":"10.1134/S1547477126700743","url":null,"abstract":"<p>This paper presents an approach to software development for slow control systems. It reports the results of applying a microkernel architecture and justifies its choice based on Neal Ford’s classification and an analysis of the most critical quality attributes. The work is devoted to Maestro software and its application in projects for the synchronization system segment for the Booster injector and the Nuclotron-collider beam transport channel. The application of SOLID principles and GoF design patterns is considered to facilitate the maintenance of slow control system software under conditions of constantly changing requirements. The developed software tools have been verified for both technical completeness and conceptual clarity. The paper describes the experience of involving undergraduate students from the Dubna State University in tackling actual software development tasks for physical setup equipment control as a part of the International Engineering School activity. The developed architectural rules and technical tools lower the entry barrier for young specialists and students participating in the development of slow control system software.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"23 5","pages":"686 - 689"},"PeriodicalIF":0.5,"publicationDate":"2026-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149011429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electron–Positron Pair Creation in Asymmetric Collisions of Heavy Nuclei 重核不对称碰撞中电子-正电子对的产生
IF 0.5
Physics of Particles and Nuclei Letters Pub Date : 2026-09-22 DOI: 10.1134/S1547477126700299
S. M. Andreev, N. K. Dulaev, D. A. Telnov, R. V. Popov, A. D. Mironov, A. M. Ryzhkov, V. M. Shabaev
{"title":"Electron–Positron Pair Creation in Asymmetric Collisions of Heavy Nuclei","authors":"S. M. Andreev,&nbsp;N. K. Dulaev,&nbsp;D. A. Telnov,&nbsp;R. V. Popov,&nbsp;A. D. Mironov,&nbsp;A. M. Ryzhkov,&nbsp;V. M. Shabaev","doi":"10.1134/S1547477126700299","DOIUrl":"10.1134/S1547477126700299","url":null,"abstract":"<p>Previously developed two-center approach for calculations of electron–positron pair creation in collisions of two identical heavy nuclei is extended to nonsymmetric collisions where the colliding nuclei differ from each other. The time-dependent Dirac equation for the positron wave function is solved numerically with the help of the generalized pseudospectral method in modified prolate spheroidal coordinates and Crank–Nicolson algorithm for time propagation. For the case of the asymmetric <span>({{{text{U}}}^{{92 + }}}{-} {text{C}}{{{text{m}}}^{{96 + }}})</span> collisions, we calculate total probabilities of electron–positron pair creation, as well as angle-integrated and angle-resolved energy distributions of the emitted positrons. Characteristic signatures of the supercritical regime are found in total probabilities and energy distributions. The angular distributions show high degree of isotropy.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"23 5","pages":"517 - 520"},"PeriodicalIF":0.5,"publicationDate":"2026-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149011447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sensitivity of Flow Harmonics to the Equation of State of Strongly Interacting Matter in Heavy-Ion Collisions at Nuclotron-NICA Energies 核子- nica能量重离子碰撞中流动谐波对强相互作用物质状态方程的敏感性
IF 0.5
Physics of Particles and Nuclei Letters Pub Date : 2026-09-22 DOI: 10.1134/S1547477126700512
N. Bikmetov, P. Parfenov, A. Taranenko
{"title":"Sensitivity of Flow Harmonics to the Equation of State of Strongly Interacting Matter in Heavy-Ion Collisions at Nuclotron-NICA Energies","authors":"N. Bikmetov,&nbsp;P. Parfenov,&nbsp;A. Taranenko","doi":"10.1134/S1547477126700512","DOIUrl":"10.1134/S1547477126700512","url":null,"abstract":"<p>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 high sensitivity to the properties of the EoS and to the mechanisms of collective dynamics. In this work, we study correlations between the directed (<span>({{v}_{1}})</span>), elliptic (<span>({{v}_{2}})</span>), and triangular (<span>({{v}_{3}})</span>) flow coefficients using the modern JAM transport model with different assumptions about the nuclear EoS at Nuclotron–NICA energies relevant for the MPD experiment. The results are compared with available HADES data for validation.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"23 5","pages":"602 - 604"},"PeriodicalIF":0.5,"publicationDate":"2026-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149011453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Relativistic Description of Tetraquarks with Two Heavy Quarks 具有两个重夸克的四夸克的相对论性描述
IF 0.5
Physics of Particles and Nuclei Letters Pub Date : 2026-09-22 DOI: 10.1134/S1547477126700263
V. O. Galkin, E. M. Savchenko
{"title":"Relativistic Description of Tetraquarks with Two Heavy Quarks","authors":"V. O. Galkin,&nbsp;E. M. Savchenko","doi":"10.1134/S1547477126700263","DOIUrl":"10.1134/S1547477126700263","url":null,"abstract":"<p>Masses of tetraquarks with two heavy quarks (<span>(QQ{kern 1pt} 'bar {q}bar {q}{kern 1pt} ')</span>) are calculated within the relativistic quark model, based on the quasipotential approach in QCD and diquark–antidiquark picture of tetraquarks. The relativistic quasipotential equation takes into account all spin–dependent and spin–independent relativistic corrections and the internal structure of the diquarks. The calculated masses of such tetraquarks are compared with the strong fall–apart decay thresholds into a pair of mesons. The states that could be observed as narrow resonances in other decay modes are determined.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"23 5","pages":"505 - 508"},"PeriodicalIF":0.5,"publicationDate":"2026-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149011503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Performance and Upgrade of Trigger Detectors for the BM@N Experiment BM@N实验中触发探测器的性能与升级
IF 0.5
Physics of Particles and Nuclei Letters Pub Date : 2026-09-22 DOI: 10.1134/S1547477126700433
V. K. Velichkov, V. N. Azorskiy, P. N. Grigoriev, N. A. Lashmanov, S. M. Piyadin, V. Yu. Rogov, S. A. Sedykh, S. V. Sergeev, V. V. Tikhomirov, A. A. Timoshenko, V. I. Yurevich
{"title":"Performance and Upgrade of Trigger Detectors for the BM@N Experiment","authors":"V. K. Velichkov,&nbsp;V. N. Azorskiy,&nbsp;P. N. Grigoriev,&nbsp;N. A. Lashmanov,&nbsp;S. M. Piyadin,&nbsp;V. Yu. Rogov,&nbsp;S. A. Sedykh,&nbsp;S. V. Sergeev,&nbsp;V. V. Tikhomirov,&nbsp;A. A. Timoshenko,&nbsp;V. I. Yurevich","doi":"10.1134/S1547477126700433","DOIUrl":"10.1134/S1547477126700433","url":null,"abstract":"<p>A system of trigger detectors was developed and successfully operated in the BM@N experiment during the 2023 run with <sup>124</sup>Xe ion beams at 3.8 A GeV. The trigger detectors are based on plastic scintillators with specialized PMTs and SiPMs operating in the strong magnetic field of the BM@N magnet. The detector characteristics obtained in the run are discussed. Some degradation of the detector response due to radiation damage in the scintillators was observed during prolonged operation at a beam intensity of 10<sup>6</sup> ions per spill. A further upgrade program aims to improve the design of the detectors, their performance characteristics, and to minimize beam-line materials.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"23 5","pages":"573 - 576"},"PeriodicalIF":0.5,"publicationDate":"2026-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149011505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Data Processing of FARICH Prototype Tests on “Electron Beam Facility” from VEPP-4M Complex VEPP-4M综合体“电子束装置”FARICH原型试验数据处理
IF 0.5
Physics of Particles and Nuclei Letters Pub Date : 2026-09-22 DOI: 10.1134/S1547477126700597
A. Yu. Barnyakov, V. S. Bobrovnikov, I. A. Kuyanov, A. D. Ofitserov
{"title":"Data Processing of FARICH Prototype Tests on “Electron Beam Facility” from VEPP-4M Complex","authors":"A. Yu. Barnyakov,&nbsp;V. S. Bobrovnikov,&nbsp;I. A. Kuyanov,&nbsp;A. D. Ofitserov","doi":"10.1134/S1547477126700597","DOIUrl":"10.1134/S1547477126700597","url":null,"abstract":"<p>The SPD experiment for the NICA collider is currently under development. For efficient <span>(pi )</span>- and <span>(K)</span>-mesons separation at the end-cap section of the SPD detector with a confidence level better than 3<span>(sigma )</span>, a Cherenkov ring imaging detector system based on focusing aerogel (FARICH) is proposed. In the spring of 2025, new aerogel samples of multilayer monoblocks were synthesized. A prototype FARICH detector was tested on the electron beam of the VEPP-4M complex. This paper presents the results of testing the prototype with the new aerogel samples, and describes the data processing from the experiment.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"23 5","pages":"630 - 632"},"PeriodicalIF":0.5,"publicationDate":"2026-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149011502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Uniformity Study of the Light Yield and Crosstalk in Cubic Scintillators 立方闪烁体的光产率和串扰均匀性研究
IF 0.5
Physics of Particles and Nuclei Letters Pub Date : 2026-09-22 DOI: 10.1134/S1547477126700585
A. A. Chvirova
{"title":"Uniformity Study of the Light Yield and Crosstalk in Cubic Scintillators","authors":"A. A. Chvirova","doi":"10.1134/S1547477126700585","DOIUrl":"10.1134/S1547477126700585","url":null,"abstract":"<p>The development of highly segmented neutrino detectors with about 5–6 million cubic scintillator components imposes strict requirements on key parameters such as light yield, optical crosstalk, and geometric precision. This paper presents the dependence of the light yield and optical crosstalk on the particle interaction position in the scintillator cube. The results demonstrate the high performance and reliability of the cubic scintillator design.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"23 5","pages":"626 - 629"},"PeriodicalIF":0.5,"publicationDate":"2026-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149011383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Amplitude Analysis of Di-Charmonium Resonances in Three Decay Channels 三种衰减通道中二谐波共振的振幅分析
IF 0.5
Physics of Particles and Nuclei Letters Pub Date : 2026-09-22 DOI: 10.1134/S1547477126700524
A. R. Didenko, L. K. Gladilin, I. V. Yeletskikh
{"title":"Amplitude Analysis of Di-Charmonium Resonances in Three Decay Channels","authors":"A. R. Didenko,&nbsp;L. K. Gladilin,&nbsp;I. V. Yeletskikh","doi":"10.1134/S1547477126700524","DOIUrl":"10.1134/S1547477126700524","url":null,"abstract":"<p>Two narrow resonant structures at 6.9 and 7.2 GeV, as well as a broad structure near the di-<span>(J{kern 1pt} /{kern 1pt} psi )</span> production threshold, have recently been observed by the LHCb [1], ATLAS [2], and CMS [3] collaborations in the di-<span>(J{kern 1pt} /{kern 1pt} psi )</span> and <span>(J{kern 1pt} /{kern 1pt} psi )</span> + <span>(psi (2S))</span> invariant-mass spectra with four muons in the final state. This suggests the existence of fully heavy tetraquark candidates with a <span>(ccbar {c}bar {c})</span> quark configuration: <span>(X(6900))</span>, <span>(X(7200))</span>, and <span>(X(6500))</span>. However, their quantum properties have not yet been confirmed [4]. This report presents an amplitude analysis for the di-<span>(J{kern 1pt} /{kern 1pt} psi )</span> and <span>(J{kern 1pt} /{kern 1pt} psi )</span> + <span>(psi (2S))</span> channels with 4μ and 4μ + 2π in final states, aimed at studying the properties of these exotic resonances. By performing a simultaneous fit to the mass and angular distributions, the masses and widths of the observed structures are determined under the hypothesis of two interfering states with <span>({{J}^{P}})</span> = <span>({{0}^{ + }})</span> for both. The comparisons with other spin–parity hypotheses for <span>(X(6900))</span> are also presented.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"23 5","pages":"605 - 608"},"PeriodicalIF":0.5,"publicationDate":"2026-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149011440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
FPGA Implementation of Shape Fitting Algorithm for Signals with Electron–Photon and Hadron Components for Reconstruction in the Belle II Electromagnetic Calorimeter Belle II型电磁量热计重构中电子-光子和强子分量信号形状拟合算法的FPGA实现
IF 0.5
Physics of Particles and Nuclei Letters Pub Date : 2026-09-22 DOI: 10.1134/S154747712670055X
O. Radchenko, A. Kuzmin, M. Remnev, V. Zhulanov
{"title":"FPGA Implementation of Shape Fitting Algorithm for Signals with Electron–Photon and Hadron Components for Reconstruction in the Belle II Electromagnetic Calorimeter","authors":"O. Radchenko,&nbsp;A. Kuzmin,&nbsp;M. Remnev,&nbsp;V. Zhulanov","doi":"10.1134/S154747712670055X","DOIUrl":"10.1134/S154747712670055X","url":null,"abstract":"<p>This paper describes hardware implementation of pulse shape discrimination algorithm into the current detector electronics with no need in major upgrade. According to this algorithm modeling and calculations of signal amplitude, time, photon and hadron contributions into the waveform are presented.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"23 5","pages":"616 - 618"},"PeriodicalIF":0.5,"publicationDate":"2026-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149011454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Isolated Pair Photon Production in the Parton Reggeization Approach 部分子正则化方法中孤立对光子的产生
IF 0.5
Physics of Particles and Nuclei Letters Pub Date : 2026-09-22 DOI: 10.1134/S1547477126700457
A. V. Pustobaeva, V. A. Saleev
{"title":"Isolated Pair Photon Production in the Parton Reggeization Approach","authors":"A. V. Pustobaeva,&nbsp;V. A. Saleev","doi":"10.1134/S1547477126700457","DOIUrl":"10.1134/S1547477126700457","url":null,"abstract":"<p>In the article, we calculate differential cross sections for pair production of isolated photons within the parton Reggeization approach (PRA) at energies of Tevatron and LHC colliders. The calculations were performed within the KaTie parton-level event generator and improved KMRW model for unintegrated parton distribution functions. The satisfactory agreement with experimental data from ATLAS and CDF collaborations was obtained, and the estimation for photon pair production cross section at the NICA collider was performed.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"23 5","pages":"581 - 583"},"PeriodicalIF":0.5,"publicationDate":"2026-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149011458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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