{"title":"Diffusive Shock Acceleration: Nonclassical Model of Cosmic Ray Transport","authors":"A. A. Lagutin","doi":"10.1134/S1063778825602203","DOIUrl":"10.1134/S1063778825602203","url":null,"abstract":"<p>In this work the theory of diffusive shock acceleration is extended to the case of nonclassical particle transport with Lévy flights and Lévy traps, when the mean square displacement grows nonlinearly with time. In this approach the Green function is not a Gaussian but it exhibits power-law tails. By using the propagator appropriate for nonclassical diffusion, it is found for the first time that energy spectral index of particles accelerated at shock front is <span>(gamma=[alpha(r+5)-6beta]/[alpha(r-1)])</span>, where <span>(0<alpha<2)</span> and <span>(0<beta<1)</span> are the exponents of power-law behavior of Lévy flights and Lévy traps, respectively. We note that this result coincides with standard slope at <span>(alpha=2)</span>, <span>(beta=1)</span> (normal diffusion), and also includes those obtained earlier for the subdiffusion (<span>(alpha=2)</span>, <span>(beta<1)</span>) and superdiffusion (<span>(alpha<2)</span>, <span>(beta=1)</span>) regimes.</p>","PeriodicalId":728,"journal":{"name":"Physics of Atomic Nuclei","volume":"88 3","pages":"S251 - S256"},"PeriodicalIF":0.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579191","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}
{"title":"Erratum to: Dark Matter Around Primordial Black Holes","authors":"Yu. N. Eroshenko","doi":"10.1134/S1063778825160021","DOIUrl":"10.1134/S1063778825160021","url":null,"abstract":"","PeriodicalId":728,"journal":{"name":"Physics of Atomic Nuclei","volume":"88 4","pages":"S451 - S451"},"PeriodicalIF":0.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S1063778825160021.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Multiple Particle Production in ({{p}+{A}}) and ({{d}+{A}}) Collisions in the Framework of the Modified Glauber Model","authors":"Svetlana Simak, Grigory Feofilov","doi":"10.1134/S106377882560229X","DOIUrl":"10.1134/S106377882560229X","url":null,"abstract":"<p>The cases of <span>({p}+{A})</span> and <span>({d}+{A})</span> collisions appears to be the most illustrative in terms of number of nucleons–participants defined with the account of energy–momentum conservation in multiple particle production vs. the Standard Glauber approach. We argue that the obtained results demonstrate that the widely used application of the Standard Glauber model—in the analysis of experimental data of multiple particle production in high energy hadron collisions, should be reconsidered.</p>","PeriodicalId":728,"journal":{"name":"Physics of Atomic Nuclei","volume":"88 4","pages":"S374 - S380"},"PeriodicalIF":0.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579138","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}
A. M. Bykov, A. N. Fursov, K. P. Levenfish, A. E. Petrov
{"title":"Acceleration of Protons to Very High Energies in Double-Torus Pulsar Wind Nebulae","authors":"A. M. Bykov, A. N. Fursov, K. P. Levenfish, A. E. Petrov","doi":"10.1134/S1063778825602185","DOIUrl":"10.1134/S1063778825602185","url":null,"abstract":"<p>Based on direct numerical modeling, it is shown that pulsar wind nebulae with a double-torus X-ray morphology (with the Vela nebula as a prototype) can accelerate protons to very high energies. The maximum energies that protons can gain exceeds 400 TeV. The acceleration process allows <span>({sim}(5{-}6)%)</span> of the protons interacting with the nebular flows to increase their Lorentz factors from <span>(10^{4})</span> to <span>(3times 10^{5})</span> in <span>(10{-}30)</span> years.</p>","PeriodicalId":728,"journal":{"name":"Physics of Atomic Nuclei","volume":"88 3","pages":"S325 - S329"},"PeriodicalIF":0.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579187","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}
{"title":"Instrumentation of GRAPES3 Muon Telescope","authors":"K. Ramesh, P. A. Wincy","doi":"10.1134/S106377882560215X","DOIUrl":"10.1134/S106377882560215X","url":null,"abstract":"<p>The proportional counters developed and operated by the GRAPES-3 experiment (Gamma Ray Astronomy PeV EnergieS phase-3), an India–Japan collaboration situated in Ooty at an altitude of 2200 m are gas-based detectors designed to study solar and thunderstorm phenomena using cosmic ray muons. PRCs are essential in radiation detection, nuclear research, and elemental analysis. Although the principle of operation of the PRC seems simple, over the years it has undergone significant performance improvements. In this paper, the performance of a muon telescope station consisting of 928 PRCs (arranged in the form of 4 modules having 4 layers of 58 PRCs each) before and after the upgrade of instrumentation is studied and compared. The PRCs operated at 3 kV are read out by in-house developed low-noise high- performance front-end electronics comprising of pre-amplifier and discriminator modules. The amplified analog pulses are processed for multichannel analysis, and the corresponding digital output pulses are fed to the recording electronics. Data acquisition was carried out continuously over multiple years. The present analysis focuses on data from a full year prior to the upgrade (2018) and a full year following the upgrade (2023). The results showed that performance is significantly improved as a result of the reduced noise and number of breaks in the data acquisition after the upgrade. The number of noisy channels caused by various sources is considerably minimized, thereby enabling the muon telescope to record the astrophysical events at much higher reliability and efficiency. The results and improvements are reported along with prospective scientific goals.</p>","PeriodicalId":728,"journal":{"name":"Physics of Atomic Nuclei","volume":"88 3","pages":"S274 - S280"},"PeriodicalIF":0.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579188","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}
{"title":"Feasibility Studies of Charmonia Measurements at the ALICE Experiment at LHC","authors":"Y. Hambardzumyan, Y. Kharlov","doi":"10.1134/S1063778825602252","DOIUrl":"10.1134/S1063778825602252","url":null,"abstract":"<p>The ALICE collaboration is committed towards strongly interacting matter studies in proton–proton and heavy ion collisions at LHC, one of the characteristic observables of which are systematic measurements of quarkonia production with the future experiment of ALICE 3. Fast simulations for ALICE 3 showed that studies of charmonia states <span>(1S(J/psito e^{+}e^{-}))</span> and <span>(1P(chi_{cJ}to J/psigamma))</span> using a high-resolution electromagnetic calorimeter are attainable. Charmonia reconstruction via <span>(e^{+}e^{-})</span> decay mode relies on electron identification using a tracking system and an electromagnetic calorimeter. In the current report we demonstrate the feasibility of electron identification procedure on data of the ALICE experiment collected during LHC Run 3 with <span>(pp)</span> collisions at <span>(sqrt{s}=13.6)</span> TeV.</p>","PeriodicalId":728,"journal":{"name":"Physics of Atomic Nuclei","volume":"88 3","pages":"S300 - S304"},"PeriodicalIF":0.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579262","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}
{"title":"Erratum to: NOvA Recent Results of Three-Flavor Oscillation Analysis","authors":"Anastasiia Kalitkina, NOvA Collaboration","doi":"10.1134/S1063778825160045","DOIUrl":"10.1134/S1063778825160045","url":null,"abstract":"","PeriodicalId":728,"journal":{"name":"Physics of Atomic Nuclei","volume":"88 4","pages":"S453 - S453"},"PeriodicalIF":0.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S1063778825160045.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Erratum to: Reconstruction of the Scalar-Torsion Gravity Version from the Frame of Exact Cosmological Solutions","authors":"I. V. Fomin, S. V. Chervon, E. S. Dentsel","doi":"10.1134/S1063778825160033","DOIUrl":"10.1134/S1063778825160033","url":null,"abstract":"","PeriodicalId":728,"journal":{"name":"Physics of Atomic Nuclei","volume":"88 4","pages":"S452 - S452"},"PeriodicalIF":0.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S1063778825160033.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Erratum to: The DANSS Collaboration: Resent Results and Perspectives","authors":"I. Alekseev, DANSS Collaboration","doi":"10.1134/S106377882516001X","DOIUrl":"10.1134/S106377882516001X","url":null,"abstract":"","PeriodicalId":728,"journal":{"name":"Physics of Atomic Nuclei","volume":"88 4","pages":"S450 - S450"},"PeriodicalIF":0.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S106377882516001X.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
V. A. Allakhverdyan, A. D. Avrorin, A. V. Avrorin, V. M. Aynutdinov, Z. Bardačová, I. A. Belolaptikov, E. A. Bondarev, I. V. Borina, N. M. Budnev, V. A. Chadymov, A. S. Chepurnov, V. Y. Dik, G. V. Domogatsky, A. A. Doroshenko, R. Dvornický, A. N. Dyachok, Zh.-A. M. Dzhilkibaev, E. Eckerová, T. V. Elzhov, V. N. Fomin, A. R. Gafarov, K. V. Golubkov, N. S. Gorshkov, T. I. Gress, K. G. Kebkal, V. K. Kebkal, I. V. Kharuk, E. V. Khramov, M. M. Kolbin, S. O. Koligaev, K. V. Konischev, A. V. Korobchenko, A. P. Koshechkin, V. A. Kozhin, M. V. Kruglov, V. F. Kulepov, A. A. Kulikov, Y. E. Lemeshev, R. R. Mirgazov, D. V. Naumov, A. S. Nikolaev, I. A. Perevalova, D. P. Petukhov, E. N. Pliskovsky, M. I. Rozanov, E. V. Ryabov, G. B. Safronov, B. A. Shaybonov, E. V. Shirokov, V. Y. Shishkin, F. Šimkovic, A. E. Sirenko, A. V. Skurikhin, A. G. Solovjev, M. N. Sorokovikov, I. Štekl, A. P. Stromakov, O. V. Suvorova, V. A. Tabolenko, V. I. Tretjak, B. B. Ulzutuev, Y. V. Yablokova, D. N. Zaborov, S. I. Zavyalov, D. Y. Zvezdov, Baikal-GVD Collaboration
{"title":"Muon Track Reconstruction Procedures at the Baikal-GVD Neutrino Telescope","authors":"V. A. Allakhverdyan, A. D. Avrorin, A. V. Avrorin, V. M. Aynutdinov, Z. Bardačová, I. A. Belolaptikov, E. A. Bondarev, I. V. Borina, N. M. Budnev, V. A. Chadymov, A. S. Chepurnov, V. Y. Dik, G. V. Domogatsky, A. A. Doroshenko, R. Dvornický, A. N. Dyachok, Zh.-A. M. Dzhilkibaev, E. Eckerová, T. V. Elzhov, V. N. Fomin, A. R. Gafarov, K. V. Golubkov, N. S. Gorshkov, T. I. Gress, K. G. Kebkal, V. K. Kebkal, I. V. Kharuk, E. V. Khramov, M. M. Kolbin, S. O. Koligaev, K. V. Konischev, A. V. Korobchenko, A. P. Koshechkin, V. A. Kozhin, M. V. Kruglov, V. F. Kulepov, A. A. Kulikov, Y. E. Lemeshev, R. R. Mirgazov, D. V. Naumov, A. S. Nikolaev, I. A. Perevalova, D. P. Petukhov, E. N. Pliskovsky, M. I. Rozanov, E. V. Ryabov, G. B. Safronov, B. A. Shaybonov, E. V. Shirokov, V. Y. Shishkin, F. Šimkovic, A. E. Sirenko, A. V. Skurikhin, A. G. Solovjev, M. N. Sorokovikov, I. Štekl, A. P. Stromakov, O. V. Suvorova, V. A. Tabolenko, V. I. Tretjak, B. B. Ulzutuev, Y. V. Yablokova, D. N. Zaborov, S. I. Zavyalov, D. Y. Zvezdov, Baikal-GVD Collaboration","doi":"10.1134/S1063778825602446","DOIUrl":"10.1134/S1063778825602446","url":null,"abstract":"<p>The Baikal-GVD neutrino telescope is the largest neutrino detector of its kind in the Northern Hemisphere. Muons produced in neutrino interaction in the vicinity of the detector leave track-like response in the detector allowing to reconstruct the neutrino arrival direction with the precision up to <span>(0.2^{circ})</span>. The Baikal-GVD collaboration has developed a variety of methods for the track-like event analysis. Methods for track-like event direction and energy reconstruction and neutrino cadidate event selection are discussed in this report. Preliminary results of application of analysis pipeline to the data-taking seasons from 2019 to 2021 are shown.</p>","PeriodicalId":728,"journal":{"name":"Physics of Atomic Nuclei","volume":"88 4","pages":"S401 - S407"},"PeriodicalIF":0.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579119","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}
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