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Femtoscopic Correlations of Charged Pions and Kaons in Au + Au Collisions at BES-I STAR Energy Region with the UrQMD Model 在 BES-I STAR 能区的 Au + Au 对撞中，用 UrQMD 模型计算带电质子和 Ka 离子的飞秒相关性
IF 0.6 4区 物理与天体物理
Physics of Particles and Nuclei Pub Date : 2024-08-18 DOI: 10.1134/S1063779624700448
A. Korobitsyn, A. Kraeva, K. Mikhailov, G. Nigmatkulov, A. Pishchaeva
{"title":"Femtoscopic Correlations of Charged Pions and Kaons in Au + Au Collisions at BES-I STAR Energy Region with the UrQMD Model","authors":"A. Korobitsyn,&nbsp;A. Kraeva,&nbsp;K. Mikhailov,&nbsp;G. Nigmatkulov,&nbsp;A. Pishchaeva","doi":"10.1134/S1063779624700448","DOIUrl":"10.1134/S1063779624700448","url":null,"abstract":"<p>Femtoscopy is a primary tool for measuring the spatiotemporal characteristics of small and short-lived systems created in particle or nuclear collisions with an accuracy of 1 fm. The possibility of such measurements is due to the effects of quantum statistics and final state interactions which create the momentum correlations of two or more particles at small relative momenta in their center-of-mass system. We report on the calculations of like-sign koan femtoscopic correlations produced in Au + Au at the BES-I region from RHIC using the Ultrarelativistic Quantum Molecular Dynamics Model (UrQMD). We discuss the 3D pion and kaon radii as a function of the transverse momentum of the particles and the centrality of the collision.</p>","PeriodicalId":729,"journal":{"name":"Physics of Particles and Nuclei","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142412237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
MPD Data Lab: Towards the Modern Data Analysis Framework for the MPD Experiment MPD 数据实验室：为 MPD 实验建立现代数据分析框架
IF 0.4 4区 物理与天体物理
Physics of Particles and Nuclei Pub Date : 2024-08-18 DOI: 10.1134/s1063779624700680
J. Buša, A. Bychkov, S. Hnatič, A. Krylov, V. Krylov, O. Rogachevsky
{"title":"MPD Data Lab: Towards the Modern Data Analysis Framework for the MPD Experiment","authors":"J. Buša, A. Bychkov, S. Hnatič, A. Krylov, V. Krylov, O. Rogachevsky","doi":"10.1134/s1063779624700680","DOIUrl":"https://doi.org/10.1134/s1063779624700680","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>MPDRoot is an off-line software framework for simulation, reconstruction, and physical analysis of the simulated or experimental data for MPD experiment at NICA collider. The experiment is projected to run for a few decades and to obtain ~10<sup>8</sup> events of heavy ion collisions, collecting the data for physics analysis at the 100 PB scale. For overall experiment success it is imperative to have state of the art data analysis software, which integrates best of available latest technologies, while adhering to time-proven, most effective development methodologies. In this paper, we introduce the MPD Data Lab—the technological integration of Acceptance Test Driven Development and Rapid Development concepts into the MPDRoot framework. At the beginning, we standardized the existing codebase by designing and writing API. This was a necessary step to be able to plug-in the external diagnostic software entities and to make the in-depth comparison of different realizations of the reconstruction modules possible. The logic of the diagnostics is encapsulated into the separate controller—the QA Engine, while its visualization is provided by JupyterLab framework. We show how full integration of MPDRoot’s libraries into JupyterLab enables to use the power of rapid development provided by JupyterLab technology to enhance productivity by fast prototyping of MPDRoot’s algorithms. The combination of these technologies together with the existing development environment form a software complex, providing means to accomplish the long term strategic objectives—competent software development with reliable quality control and algorithm innovation.</p>","PeriodicalId":729,"journal":{"name":"Physics of Particles and Nuclei","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142202374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Elliptic Flow Fluctuations at NICA Energy Range NICA 能量范围内的椭圆流波动
IF 0.4 4区 物理与天体物理
Physics of Particles and Nuclei Pub Date : 2024-08-18 DOI: 10.1134/s1063779624700825
A. Demanov, P. Parfenov, A. Taranenko
{"title":"Elliptic Flow Fluctuations at NICA Energy Range","authors":"A. Demanov, P. Parfenov, A. Taranenko","doi":"10.1134/s1063779624700825","DOIUrl":"https://doi.org/10.1134/s1063779624700825","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>One of the primary observables that is sensitive to the transport characteristics of the strongly interacting matter created in relativistic heavy-ion collisions is the elliptic flow <span>({{v}_{2}})</span> of the produced particles. The relative elliptical flow fluctuations are of great interest because they can be used as a probe of the initial conditions using the ratio of cumulants <span>({{{{v}_{2}}{ 4} } mathord{left/ {vphantom {{{{v}_{2}}{ 4} } {{{v}_{2}}{ 2} }}} right. kern-0em} {{{v}_{2}}{ 2} }})</span>. In this work, we study the centrality dependence of elliptic flow fluctuations using the state-of-the-art models of heavy-ion collisions spanning the range <span>(sqrt {{{s}_{{NN}}}} )</span> = 5–11 GeV.</p>","PeriodicalId":729,"journal":{"name":"Physics of Particles and Nuclei","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142202525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Amplitude of Scattering of Protons on the Bounded Nuclear Nucleons from Analysis of the Proton-Nucleus Scattering 从质子-核子散射分析看质子对有界核子的散射幅度
IF 0.4 4区 物理与天体物理
Physics of Particles and Nuclei Pub Date : 2024-08-18 DOI: 10.1134/s1063779624700801
V. K. Lukyanov, E. V. Zemlyanaya, K. V. Lukyanov, I. A. M. Abdul-Magead
{"title":"Amplitude of Scattering of Protons on the Bounded Nuclear Nucleons from Analysis of the Proton-Nucleus Scattering","authors":"V. K. Lukyanov, E. V. Zemlyanaya, K. V. Lukyanov, I. A. M. Abdul-Magead","doi":"10.1134/s1063779624700801","DOIUrl":"https://doi.org/10.1134/s1063779624700801","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The results of calculations and their comparison with experimental data of proton scattering on <sup>28</sup>Si, <sup>40</sup>Ca, <sup>58</sup>Ni and <sup>208</sup>Pb nuclei at energies from 200 to 1000 MeV are investigated based on the optical potential model in which the amplitude of scattering of an incident proton on a bound nuclear nucleon is explicitly revealed. This amplitude depends on three parameters, namely, the total nucleon-nucleon scattering cross section, the ration of real to imaginary parts of scattering amplitude at forward angles, and on the slope parameter. This analysis of proton-nucleus scattering data allows one to establish these parameters and compare them with those from the analysis of proton scattering on a free unbounded nucleon.</p>","PeriodicalId":729,"journal":{"name":"Physics of Particles and Nuclei","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142202381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Radiation Damage to SiPM Irradiated with Fast Neutrons 用快中子辐照的 SiPM 的辐射损伤
IF 0.4 4区 物理与天体物理
Physics of Particles and Nuclei Pub Date : 2024-08-18 DOI: 10.1134/s1063779624700898
N. I. Zamyatin, Yu. A. Kopylov, E. A. Streletskaya, B. L. Topko, A. I. Sheremetyeva
{"title":"Radiation Damage to SiPM Irradiated with Fast Neutrons","authors":"N. I. Zamyatin, Yu. A. Kopylov, E. A. Streletskaya, B. L. Topko, A. I. Sheremetyeva","doi":"10.1134/s1063779624700898","DOIUrl":"https://doi.org/10.1134/s1063779624700898","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Silicon pixel photomultipliers (SiPM) are widely used in various fields of scientific experimental equipment. As a rule, the use of SiPM in physical experiments at accelerators assumes the presence of a radiation background in the area where the detection equipment is located. Radiation defects created in the space charge region (SCR) of pixels lead to an increase in thermal generation current, which is a source of noise. The main and practical issues for any experiment are lifetime and degradation rate of the main parameters and SiPM operating modes that reduce the negative effects from the radiation damage accumulation over time. This paper attempts to practically answer some of these questions.</p>","PeriodicalId":729,"journal":{"name":"Physics of Particles and Nuclei","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142202453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Σ Hyperons Production in pp and p-Pb Collisions at LHC with ALICE 利用 ALICE 在大型强子对撞机的 pp 和 p-Pb 对撞中产生 Σ 超子
IF 0.4 4区 物理与天体物理
Physics of Particles and Nuclei Pub Date : 2024-08-18 DOI: 10.1134/s1063779624700710
A. Borisov
{"title":"Σ Hyperons Production in pp and p-Pb Collisions at LHC with ALICE","authors":"A. Borisov","doi":"10.1134/s1063779624700710","DOIUrl":"https://doi.org/10.1134/s1063779624700710","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>In addition to <span>(Lambda )</span> hyperons, new data on <span>(Sigma )</span> hyperons production are compared to different Monte-Carlo models and contribute to understand hadron production mechanisms. The first measurements of the transverse momentum (<span>({{p}_{{text{T}}}})</span>) spectra of <span>({{Sigma }^{0}})</span> and <span>({{overline Sigma }^{0}})</span> hyperons in pp collisions at <span>(sqrt s = 7)</span> TeV at the LHC are presented. The <span>({{Sigma }^{0}})</span>(<span>({{overline Sigma }^{0}})</span>) is reconstructed via its electromagnetic decay channel <span>(Lambda (overline Lambda ) + gamma )</span>, while the <span>(Lambda )</span>(<span>(overline Lambda )</span>) baryon is detected via its decay into <span>(p + {{pi }^{ - }})</span> (<span>(bar {p})</span> + <span>({{pi }^{ + }})</span>). The low-energy photon is measured via conversion into <span>({{e}^{ + }}{{e}^{ - }})</span> pairs in the detector material and in PHOS calorimeter by exploiting the unique capability of the ALICE detector. The complementary results on the first detection of <span>({{Sigma }^{ + }})</span> and <span>({{overline Sigma }^{ - }})</span> hyperon at the LHC with ALICE are shown in pp collisions at <span>(sqrt s = 13)</span> TeV. The <span>({{Sigma }^{ + }})</span>(<span>({{overline Sigma }^{ - }})</span>) is reconstructed via its weak decay into <i>p</i><span>((bar {p}) + {{pi }^{0}})</span> with the challenging detection of low-energy photons from <span>({{pi }^{0}})</span> decay. Also, the first reconstruction of <span>({{overline Sigma }^{ pm }} to bar {n} + {{pi }^{ pm }})</span> decays and <span>({{overline Sigma }^{ pm }})</span> transverse momenta spectra in pp and <i>p</i>-Pb collisions are presented. Antineutron is identified and reconstructed with PHOS by unique signature of the annihilation process.</p>","PeriodicalId":729,"journal":{"name":"Physics of Particles and Nuclei","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142202414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Gorishny–Isaev Vacuum Integrations and UV(IR)-Regime 戈里什尼-伊萨耶夫真空积分和紫外（红外）机制
IF 0.6 4区 物理与天体物理
Physics of Particles and Nuclei Pub Date : 2024-08-18 DOI: 10.1134/S1063779624700229
I. V. Anikin
{"title":"The Gorishny–Isaev Vacuum Integrations and UV(IR)-Regime","authors":"I. V. Anikin","doi":"10.1134/S1063779624700229","DOIUrl":"10.1134/S1063779624700229","url":null,"abstract":"<p>We present the further development of the vacuum massless integrations. In particular, in the Gorishny–Isaev formula, it has been shown that the delta function representing UV-regime should be treated within the sequential approach. It allows us to resolve the problem of vacuum integrations related to the analytical continuation of diagram indices.</p>","PeriodicalId":729,"journal":{"name":"Physics of Particles and Nuclei","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142409225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Tuning the Geant4 FTF Model Using Experimental Data of the NA61/SHINE Collaboration 利用 NA61/SHINE 合作组织的实验数据调整 Geant4 FTF 模型
IF 0.6 4区 物理与天体物理
Physics of Particles and Nuclei Pub Date : 2024-08-18 DOI: 10.1134/S1063779624700230
A. Galoyan, V. Uzhinsky
{"title":"Tuning the Geant4 FTF Model Using Experimental Data of the NA61/SHINE Collaboration","authors":"A. Galoyan,&nbsp;V. Uzhinsky","doi":"10.1134/S1063779624700230","DOIUrl":"10.1134/S1063779624700230","url":null,"abstract":"<p>The FTF model is an implementation of the well-known FRITIOF model of Lund University. It is used in the Geant4 package for simulations of hadron–nucleon, hadron–nucleus and nucleus–nucleus interactions at high energies. Thus, for various practical applications, it is important to have correct simulation results. This aim can be reached in a fine tuning of model parameters. In the presented paper, probabilities of strange meson production in quark and diquark fragmentations, and a probability of meson emission by diquarks are determined. A good description of the NA61/SHINE data on production of <span>({{pi }^{ pm }})</span> mesons in <span>(pp)</span>, <span>(p{text{C}})</span> and <span>(AA)</span> interactions has been achieved. However, there remains the problem of describing yields of strange mesons in nucleus–nucleus collisions. The model significantly underestimates yields of <span>({{K}^{ + }})</span> and <span>({{K}^{ - }})</span> mesons in <span>(^{{40}}{text{Ar}} + ,{{,}^{{45}}}{text{Sc}})</span> interactions.</p>","PeriodicalId":729,"journal":{"name":"Physics of Particles and Nuclei","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142202367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hidden-Charm Strong Decays of Charmonium-Like State Y(4230) 查莫铵类态Y(4230)的隐谐强衰变
IF 0.6 4区 物理与天体物理
Physics of Particles and Nuclei Pub Date : 2024-08-18 DOI: 10.1134/S1063779624700175
G. Ganbold
{"title":"Hidden-Charm Strong Decays of Charmonium-Like State Y(4230)","authors":"G. Ganbold","doi":"10.1134/S1063779624700175","DOIUrl":"10.1134/S1063779624700175","url":null,"abstract":"<p>We have studied hidden-charm strong decays of the charmonium-like resonant state <span>(Y(4320))</span> within the framework of a confined quark model by interpreting the resonance as a four-quark state with molecular-type interpolating current. The strong decay of <span>(Y)</span> into a vector and a scalar resonance, with the latter decaying, subsequently to a pair of charged pseudoscalar states, has been investigated. We have calculated the partial widths of the strong decays <span>(Y to {{pi }^{ + }}{{pi }^{ - }}{J mathord{left/ {vphantom {J Psi }} right. kern-0em} Psi })</span> and <span>(Y to {{K}^{ + }}{{K}^{ - }}{J mathord{left/ {vphantom {J Psi }} right. kern-0em} Psi })</span>, and their branching ratio, which is recently determined by the BESIII Collaboration. The estimated proportion of branching and the calculated partial strong decay widths are in reasonable agreement with the most recent experimental results.</p>","PeriodicalId":729,"journal":{"name":"Physics of Particles and Nuclei","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142412246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Contributions of QED Diagrams with Vacuum Polarization Insertions to the Lepton Anomaly within the Mellin–Barnes Representation 带有真空极化插入的 QED 图对梅林-巴恩斯表征中的质子反常的贡献
IF 0.6 4区 物理与天体物理
Physics of Particles and Nuclei Pub Date : 2024-08-18 DOI: 10.1134/S1063779624700072
O. Solovtsova, V. Lashkevich, L. Kaptari
{"title":"Contributions of QED Diagrams with Vacuum Polarization Insertions to the Lepton Anomaly within the Mellin–Barnes Representation","authors":"O. Solovtsova,&nbsp;V. Lashkevich,&nbsp;L. Kaptari","doi":"10.1134/S1063779624700072","DOIUrl":"10.1134/S1063779624700072","url":null,"abstract":"<p>We investigate the radiative QED corrections to the lepton (<span>(L = e,,, mu )</span>, and <span>(tau )</span>) anomalous magnetic moment arising from vacuum polarization diagrams by four closed lepton loops. The method is based on the consecutive application of dispersion relations for the polarization operator and the Mellin–Barnes transform for the propagators of massive particles. This allows one to obtain, for the first time, exact analytical expressions for the radiative corrections to the anomalous magnetic moments of leptons from diagrams with insertions of four identical lepton loops all of the same type <span>(ell )</span> different from the external one, <span>(L)</span>. The result is expressed in terms of the mass ratio <span>(r = {{{{m}_{ell }}} mathord{left/ {vphantom {{{{m}_{ell }}} {{{m}_{L}}}}} right. kern-0em} {{{m}_{L}}}})</span>. We investigate the behaviour of the exact analytical expressions at <span>(r to 0)</span> and <span>(r to infty )</span> and compare with the corresponding asymptotic expansions known in the literature.</p>","PeriodicalId":729,"journal":{"name":"Physics of Particles and Nuclei","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142412245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","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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