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Physics of Particles and Nuclei最新文献

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Studies of Nuclear Reactions of Light Nuclei in the Energy Range up to 2.2 MeV at the VITA Tandem Accelerator VITA串联加速器上2.2 MeV能量范围内轻核核反应的研究
IF 0.6 4区 物理与天体物理
Physics of Particles and Nuclei Pub Date : 2025-05-20 DOI: 10.1134/S1063779624701636
M. I. Bikchurina, T. A. Bykov, D. A. Kasatov, Ya. A. Kolesnikov, A. M. Koshkarev, G. M. Ostreinov, S. S. Savinov, E. O. Sokolova, A. A. Shuklina, S. Yu. Taskaev
{"title":"Studies of Nuclear Reactions of Light Nuclei in the Energy Range up to 2.2 MeV at the VITA Tandem Accelerator","authors":"M. I. Bikchurina,&nbsp;T. A. Bykov,&nbsp;D. A. Kasatov,&nbsp;Ya. A. Kolesnikov,&nbsp;A. M. Koshkarev,&nbsp;G. M. Ostreinov,&nbsp;S. S. Savinov,&nbsp;E. O. Sokolova,&nbsp;A. A. Shuklina,&nbsp;S. Yu. Taskaev","doi":"10.1134/S1063779624701636","DOIUrl":"10.1134/S1063779624701636","url":null,"abstract":"<p>Parameters of nuclear reactions <i>p</i> + Li, <i>d</i> + Li, <i>p</i> + B and <i>d</i> + B at ion energies up to 2.2 MeV were measured at the vacuum-insulated tandem accelerator VITA using alpha, gamma, and neutron spectrometers: particle yield, reaction cross section, decay path, angular and energy distribution of products. The article provides a brief description of the facility, presents, discusses the results of the research, and declares the plans.</p>","PeriodicalId":729,"journal":{"name":"Physics of Particles and Nuclei","volume":"56 2","pages":"355 - 362"},"PeriodicalIF":0.6,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144100177","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
Primordial Black Hole Binaries: The Impact of Poisson Clustering 原始黑洞双星：泊松聚类的影响
IF 0.6 4区 物理与天体物理
Physics of Particles and Nuclei Pub Date : 2025-05-20 DOI: 10.1134/S1063779624701338
V. Stasenko
{"title":"Primordial Black Hole Binaries: The Impact of Poisson Clustering","authors":"V. Stasenko","doi":"10.1134/S1063779624701338","DOIUrl":"10.1134/S1063779624701338","url":null,"abstract":"<p>Poisson noise in the initial spatial distribution of primordial black holes (PBHs) leads to their active clustering in the early Universe. Using a simple model, this work examines the internal dynamics of clusters, the formation of binary black holes and their mergers. It is shown that PBH binaries formed at the radiation-dominated phase are actively perturbed and make a subdominant contribution to gravitational wave events compared to PBHs mergers in clusters.</p>","PeriodicalId":729,"journal":{"name":"Physics of Particles and Nuclei","volume":"56 2","pages":"152 - 156"},"PeriodicalIF":0.6,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144100178","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 Strategy of Equipping the PIK Reactor Experimental Stations with Neutron Detection Systems 为PIK反应堆实验站配备中子探测系统的策略
IF 0.6 4区 物理与天体物理
Physics of Particles and Nuclei Pub Date : 2025-05-20 DOI: 10.1134/S1063779624701417
A. G. Krivshich
{"title":"The Strategy of Equipping the PIK Reactor Experimental Stations with Neutron Detection Systems","authors":"A. G. Krivshich","doi":"10.1134/S1063779624701417","DOIUrl":"10.1134/S1063779624701417","url":null,"abstract":"<p>The instrumental facility of the PIK reactor (Petersburg Nuclear Physics Institute of the National Research Center “Kurchatov Institute,” Russia) was analyzed for compliance of its neutron detectors with all the required operational parameters based on an analysis of detector instruments and strategic trends of detector development in leading neutron research centers of the world and in similar centers in Russia for over 60 years. An attempt is made to predict the advancement of the neutron detector technology for the next 10 to 15 years. A strategy is outlined as to how these requirements might be tackled by novel detector developments. This strategy is based on the ability to produce optimally performing detectors that can make the PIK reactor instruments the world leading.</p>","PeriodicalId":729,"journal":{"name":"Physics of Particles and Nuclei","volume":"56 2","pages":"195 - 209"},"PeriodicalIF":0.6,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144100359","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
A New Source of Spontaneous Self-Sustaining Currents in Multiwire Proportional Chambers 多线比例室中自发自持电流的新来源
IF 0.6 4区 物理与天体物理
Physics of Particles and Nuclei Pub Date : 2025-05-20 DOI: 10.1134/S1063779624701429
G. E. Gavrilov, M. E. Buzoveria, A. Radulović, A. A. Dzyuba, O. E. Maev, I. A. Karpov, M. V. Tatsenko, D. Bajuk-Bogdanović, H. Begović
{"title":"A New Source of Spontaneous Self-Sustaining Currents in Multiwire Proportional Chambers","authors":"G. E. Gavrilov,&nbsp;M. E. Buzoveria,&nbsp;A. Radulović,&nbsp;A. A. Dzyuba,&nbsp;O. E. Maev,&nbsp;I. A. Karpov,&nbsp;M. V. Tatsenko,&nbsp;D. Bajuk-Bogdanović,&nbsp;H. Begović","doi":"10.1134/S1063779624701429","DOIUrl":"10.1134/S1063779624701429","url":null,"abstract":"<p>The results of a study of the mechanism of occurrence of spontaneous self-sustaining currents in proportional chambers, operating as part of experiments at the LHC, are presented. The cathode of the proportional chamber dismantled from the LHCb detector, in which the occurrence of self-supporting spontaneous currents were regularly observed, was studied by AFM, Rutherford backscattering, and Raman spectroscopy. Nanocarbon structures and their fluorinated compounds were discovered in the zone of spontaneous currents of the cathode. Such formations are well known as low-threshold sources of the field emission of electrons.</p>","PeriodicalId":729,"journal":{"name":"Physics of Particles and Nuclei","volume":"56 2","pages":"210 - 218"},"PeriodicalIF":0.6,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144100360","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
Quark Gas at High Temperature: Finite-Volume Effects 高温夸克气体：有限体积效应
IF 0.6 4区 物理与天体物理
Physics of Particles and Nuclei Pub Date : 2025-05-20 DOI: 10.1134/S1063779624701521
R. N. Rogalyov, N. V. Gerasimeniuk, A. A. Korneev
{"title":"Quark Gas at High Temperature: Finite-Volume Effects","authors":"R. N. Rogalyov,&nbsp;N. V. Gerasimeniuk,&nbsp;A. A. Korneev","doi":"10.1134/S1063779624701521","DOIUrl":"10.1134/S1063779624701521","url":null,"abstract":"<p>It is shown that the standard formula for the pressure of a gas of free massless fermions leads to negative probabilities when the fermion number of the system being equal to <i>n</i> if <i>n</i> is large. The ways of resolving this paradox are proposed. A detailed analysis of the corresponding partition function reveals the existence of the Roberge–Weiss transition in the absence of strong interactions.</p>","PeriodicalId":729,"journal":{"name":"Physics of Particles and Nuclei","volume":"56 2","pages":"275 - 280"},"PeriodicalIF":0.6,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144100403","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
Toward a Quantum Model of an Electron with the Zero Self-Energy 零自能电子的量子模型
IF 0.6 4区 物理与天体物理
Physics of Particles and Nuclei Pub Date : 2025-05-20 DOI: 10.1134/S1063779624701326
V. P. Neznamov, V. E. Shemarulin
{"title":"Toward a Quantum Model of an Electron with the Zero Self-Energy","authors":"V. P. Neznamov,&nbsp;V. E. Shemarulin","doi":"10.1134/S1063779624701326","DOIUrl":"10.1134/S1063779624701326","url":null,"abstract":"<p>We propose two models of the electron with the zero self-energy based on the updated regular charged Reissner–Nordström and Kerr–Newman metrics with quantum nuclei.</p>","PeriodicalId":729,"journal":{"name":"Physics of Particles and Nuclei","volume":"56 2","pages":"146 - 151"},"PeriodicalIF":0.6,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144100248","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
Exclusive Hadron Production in Electron-Positron Annihilation and the Structure Function Method 电子-正电子湮灭中独占强子的产生及结构函数法
IF 0.6 4区 物理与天体物理
Physics of Particles and Nuclei Pub Date : 2025-05-20 DOI: 10.1134/S1063779624701703
V. S. Fadin
{"title":"Exclusive Hadron Production in Electron-Positron Annihilation and the Structure Function Method","authors":"V. S. Fadin","doi":"10.1134/S1063779624701703","DOIUrl":"10.1134/S1063779624701703","url":null,"abstract":"<p>The structure function method is currently widely used to calculate radiative corrections to exclusive electron-positron annihilation cross sections. In this case, the accuracy of calculating the corrections decreases, since the collinear approximation that forms the basis of the method does not allow one to correctly take into account the restrictions on the kinematics of emitted photons imposed by the experimental selection of events. A modification of the method is proposed that correctly takes these limitations into account.</p>","PeriodicalId":729,"journal":{"name":"Physics of Particles and Nuclei","volume":"56 2","pages":"398 - 404"},"PeriodicalIF":0.6,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144100384","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
Lepton Angular Coefficients in the Z-Boson Production in the High-Energy Factorization Approach 高能分解方法中z -玻色子产生中的轻子角系数
IF 0.6 4区 物理与天体物理
Physics of Particles and Nuclei Pub Date : 2025-05-20 DOI: 10.1134/S1063779624701739
V. A. Saleev, S. S. Omelyanchuk
{"title":"Lepton Angular Coefficients in the Z-Boson Production in the High-Energy Factorization Approach","authors":"V. A. Saleev,&nbsp;S. S. Omelyanchuk","doi":"10.1134/S1063779624701739","DOIUrl":"10.1134/S1063779624701739","url":null,"abstract":"<p>Lepton angular coefficients are studied in the decays of <i>Z</i> bosons, the production of which is described in the framework of high-energy factorization (<span>({{k}_{{text{T}}}})</span>-factorization) in the Parton Reggeization Approach (PRA). The latter is based on a modified Kimber–Martin–Ryskin–Watt (KMRW) model of unintegrated parton function functions (uPDFs) and L.N. Lipatov’s effective field theory of processes in multi-Regge kinematics. Along with the leading contribution from the quark–antiquark annihilation processes <span>((Qbar {Q} to Z))</span>, the contribution of the next correction to the strong interaction constant from the quark–gluon scattering processes (<span>(QR to qZ)</span>) is considered. The results of calculations for the <span>({{p}_{{text{T}}}})</span> spectra of the <i>Z</i> boson and lepton angular coefficients are compared with experimental data reported by the ATLAS Collaboration. Predictions obtained using the KMRW uPDFs are compared with the calculations obtained using the uPDFs in the Jung–Hautman parton branching model (PB-model).</p>","PeriodicalId":729,"journal":{"name":"Physics of Particles and Nuclei","volume":"56 2","pages":"423 - 428"},"PeriodicalIF":0.6,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144100391","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
On Asymptotic Safety in the Litim–Sannino Model Litim-Sannino模型的渐近安全性
IF 0.6 4区 物理与天体物理
Physics of Particles and Nuclei Pub Date : 2025-05-20 DOI: 10.1134/S1063779624701454
A. V. Bednyakov, A. I. Mukhaeva
{"title":"On Asymptotic Safety in the Litim–Sannino Model","authors":"A. V. Bednyakov,&nbsp;A. I. Mukhaeva","doi":"10.1134/S1063779624701454","DOIUrl":"10.1134/S1063779624701454","url":null,"abstract":"<p>In the <span>({text{SU}}({{N}_{c}}))</span> gauge theory with <span>({{N}_{f}})</span> color quarks and <span>(N_{f}^{2})</span> colorless complex scalars, an expression for the nontrivial ultraviolet fixed point is obtained as an expansion in the Veneziano parameter up to the third order. The fixed point has a one-dimensional UV critical surface and perturbatively implements the asymptotic safety scenario. The conformal window and the spectrum of anomalous dimensions of different operators are discussed. Proceedings of the Scientific session of the Nuclear Physics Section of the Physical Sciences Division of the Russian Academy of Sciences, April 1–5, 2024.</p>","PeriodicalId":729,"journal":{"name":"Physics of Particles and Nuclei","volume":"56 2","pages":"229 - 234"},"PeriodicalIF":0.6,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144100396","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
Concept of Spin Transparency at the NICA Accelerator Complex NICA加速器综合体的自旋透明度概念
IF 0.6 4区 物理与天体物理
Physics of Particles and Nuclei Pub Date : 2025-05-20 DOI: 10.1134/S1063779624701648
Yu. N. Filatov
{"title":"Concept of Spin Transparency at the NICA Accelerator Complex","authors":"Yu. N. Filatov","doi":"10.1134/S1063779624701648","DOIUrl":"10.1134/S1063779624701648","url":null,"abstract":"<p>A unique system of proton and deuteron polarization control in the spin transparency mode will be used to conduct the polarization research program at the NICA accelerator complex (JINR). Polarization control in this mode is provided by spin navigators based on weak magnetic fields. The features of operation in the spin transparency mode are discussed, as well as the possibility of its experimental verification at the Nuclotron.</p>","PeriodicalId":729,"journal":{"name":"Physics of Particles and Nuclei","volume":"56 2","pages":"363 - 369"},"PeriodicalIF":0.6,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144100392","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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