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Physics of Particles and Nuclei Letters最新文献

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Comparison of SDME and Amplitude Methods in Description of Vector-Meson Production
IF 0.4
Physics of Particles and Nuclei Letters Pub Date : 2025-04-23 DOI: 10.1134/S154747712470208X
S. I. Manaenkov
{"title":"Comparison of SDME and Amplitude Methods in Description of Vector-Meson Production","authors":"S. I. Manaenkov","doi":"10.1134/S154747712470208X","DOIUrl":"10.1134/S154747712470208X","url":null,"abstract":"<p>It is argued that the amplitude method (direct extraction of helicity-amplitude ratios from data on vector-meson production with hard photon) has much advantages compared to the standard spin-density-matrix-element method for construction of generalized parton distributions from experimental data on nucleons.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"22 1","pages":"191 - 193"},"PeriodicalIF":0.4,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865529","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
On the Possibility of Interaction of a Majorana Fermion with an Electromagnetic Field
IF 0.4
Physics of Particles and Nuclei Letters Pub Date : 2025-04-23 DOI: 10.1134/S1547477124702029
Yu. M. Pismak, O. Yu. Shakhova
{"title":"On the Possibility of Interaction of a Majorana Fermion with an Electromagnetic Field","authors":"Yu. M. Pismak,&nbsp;O. Yu. Shakhova","doi":"10.1134/S1547477124702029","DOIUrl":"10.1134/S1547477124702029","url":null,"abstract":"<p>We propose a method for constructing a model of the interaction of the Majorana fermionic field of spin <span>({1 mathord{left/ {vphantom {1 2}} right. kern-0em} 2})</span> with the photon field. It is shown that as well as for Dirac particles the electromagnetic field can be the gauge field also for Majorana ones. However, only if they are massless. A formulation of the model in which there are no dimensional parameters is given. Its most important features are discussed. The derivation of Ward’s identities is given. Feynman rules in coordinate representation are formulated and the possibility of using them for calculations is demonstrated. It is shown that in the considered model purely photon Green’s functions with odd number of arguments are equal to zero, what by virtue of Furry’s theorem, is fulfilled in quantum electrodynamics.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"22 1","pages":"161 - 164"},"PeriodicalIF":0.4,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865561","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
Charged Pion Condensation in Dense Quark Matter: from Two to Three Colors
IF 0.4
Physics of Particles and Nuclei Letters Pub Date : 2025-04-23 DOI: 10.1134/S1547477124702030
K. G. Klimenko, R. N. Zhokhov
{"title":"Charged Pion Condensation in Dense Quark Matter: from Two to Three Colors","authors":"K. G. Klimenko,&nbsp;R. N. Zhokhov","doi":"10.1134/S1547477124702030","DOIUrl":"10.1134/S1547477124702030","url":null,"abstract":"<p>There are a number of similarities between properties of two color and three color QCD, but there exist evident distinctions between them especially when diquark condensation phenomenon is concerned. It is discussed that prediction of charged pion condensation in dense quark matter has been shown to survive against diquark condensation first for two colors and then the same qualitative picture was reproduced in three color case. This is one more argument in favor of using two color QCD as a lab for investigation of three color QCD in particular of dense quark matter (with three colors) and its various phenomena that cannot be treated by lattice simulations.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"22 1","pages":"165 - 170"},"PeriodicalIF":0.4,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865562","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
Erratum to: On the Problem of Spontaneous Isotopic Symmetry Breaking in Nambu–Jona-Lasinio Models 勘误：论南布-若纳-拉西尼奥模型中的自发同位素对称性破坏问题
IF 0.4
Physics of Particles and Nuclei Letters Pub Date : 2025-04-23 DOI: 10.1134/S1547477125010029
M. N. Naydenov, M. V. Chizhov
{"title":"Erratum to: On the Problem of Spontaneous Isotopic Symmetry Breaking in Nambu–Jona-Lasinio Models","authors":"M. N. Naydenov,&nbsp;M. V. Chizhov","doi":"10.1134/S1547477125010029","DOIUrl":"10.1134/S1547477125010029","url":null,"abstract":"","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"22 1","pages":"237 - 237"},"PeriodicalIF":0.4,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865475","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
Recent Results on Proton and Light Nuclei (d, t) Production from the BM@N Experiment at NICA
IF 0.4
Physics of Particles and Nuclei Letters Pub Date : 2025-04-23 DOI: 10.1134/S1547477124701929
V. Kolesnikov, M. Kapishin, L. Kovachev
{"title":"Recent Results on Proton and Light Nuclei (d, t) Production from the BM@N Experiment at NICA","authors":"V. Kolesnikov,&nbsp;M. Kapishin,&nbsp;L. Kovachev","doi":"10.1134/S1547477124701929","DOIUrl":"10.1134/S1547477124701929","url":null,"abstract":"<p>This work presents the recent results on the production of protons, deuterons and tritons from the BM@N experiment at the NICA accelerator complex. Transverse momentum spectra and rapidity distributions of <span>(p)</span>, <span>(d)</span>, <span>(t)</span> are measured in centrality selected Ar + nucleus collisions at the beam kinetic energy of 3.2 GeV per nucleon. The system size dependence of the baryon rapidity loss is presented. The deuteron-to-proton ratio as a function of the center-of-mass rapidity is obtained in various reaction systems. The target mass dependence of the entropy per baryon <span>({S mathord{left/ {vphantom {S A}} right. kern-0em} A})</span> is studied and the energy dependence for <span>({S mathord{left/ {vphantom {S A}} right. kern-0em} A})</span> is addressed.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"22 1","pages":"105 - 111"},"PeriodicalIF":0.4,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865430","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
EW One-Loop Corrections to the Longitudinally Polarized Drell–Yan Process. (II) Charged-Current Case
IF 0.4
Physics of Particles and Nuclei Letters Pub Date : 2025-04-23 DOI: 10.1134/S1547477124702108
S. Bondarenko, Ya. Dydyshka, L. Kalinovskaya, A. Kampf, R. Sadykov, V. Yermolchyk
{"title":"EW One-Loop Corrections to the Longitudinally Polarized Drell–Yan Process. (II) Charged-Current Case","authors":"S. Bondarenko,&nbsp;Ya. Dydyshka,&nbsp;L. Kalinovskaya,&nbsp;A. Kampf,&nbsp;R. Sadykov,&nbsp;V. Yermolchyk","doi":"10.1134/S1547477124702108","DOIUrl":"10.1134/S1547477124702108","url":null,"abstract":"<p>Complete one-loop electroweak radiative corrections to the charged-current Drell–Yan processes <span>(pp to {{ell }^{ + }}{{nu }_{ell }}( + X))</span> and <span>(pp to {{ell }^{ - }}{{bar {nu }}_{ell }}( + X))</span> are presented for the case of longitudinal polarization of initial particles. The results can be used to obtain precise predictions for the kinematic distributions of polarized <span>({{W}^{ pm }})</span> production cross sections, and single- and double-spin asymmetries. Numerical results are obtained using the Monte-Carlo generator ReneSANCe. This research contributes to a global next-to-leading order analysis of polarized parton distributions in proton-proton collisions at RHIC. We proved that the impact of the one-loop electroweak radiative corrections to single- and double-spin asymmetries is negligible.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"22 1","pages":"199 - 206"},"PeriodicalIF":0.4,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865434","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
Manifestation of Asymptotic QCD Effects in Dijet Production at Large Hadron Collider with 2.76 TeV
IF 0.4
Physics of Particles and Nuclei Letters Pub Date : 2025-04-23 DOI: 10.1134/S1547477124702145
A. Yu. Egorov, V. T. Kim
{"title":"Manifestation of Asymptotic QCD Effects in Dijet Production at Large Hadron Collider with 2.76 TeV","authors":"A. Yu. Egorov,&nbsp;V. T. Kim","doi":"10.1134/S1547477124702145","DOIUrl":"10.1134/S1547477124702145","url":null,"abstract":"<p>New evidence for the dominance of the Balitsky–Fadin–Kuraev–Lipatov (BFKL) evolution effects is obtained by comparison of the calculation of Meueller–Navelet (MN) dijet production cross section in the next-to-leading logarithmic approximation of the BFKL evolution with the recent CMS measurement at the LHC at 2.76 TeV. Here the MN dijet is the maximally separated in rapidity pair of jets with both jets taken among jets with transverse momentum above some chosen <span>({{p}_{{ bot min }}})</span> in an event. Unlike the large-angle scattering Gribov–Lipatov–Altarelli–Parisi–Dokshitzer (GLAPD) evolution, the small-angle scattering BFKL evolution for is the dominant high-energy asymptotic regime of QCD.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"22 1","pages":"224 - 228"},"PeriodicalIF":0.4,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865438","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
Feasibility Study for Resonance Reconstruction in Bi + Bi Collisions at (sqrt {{{s}_{{NN}}}} ) = 9.2 GeV in the MPD Detector at NICA
IF 0.4
Physics of Particles and Nuclei Letters Pub Date : 2025-04-23 DOI: 10.1134/S1547477124702054
Ya. A. Berdnikov, D. A. Ivanishchev, D. O. Kotov, M. V. Malaev, A. Yu. Riabov
{"title":"Feasibility Study for Resonance Reconstruction in Bi + Bi Collisions at (sqrt {{{s}_{{NN}}}} ) = 9.2 GeV in the MPD Detector at NICA","authors":"Ya. A. Berdnikov,&nbsp;D. A. Ivanishchev,&nbsp;D. O. Kotov,&nbsp;M. V. Malaev,&nbsp;A. Yu. Riabov","doi":"10.1134/S1547477124702054","DOIUrl":"10.1134/S1547477124702054","url":null,"abstract":"<p>—We present transverse momentum and centrality dependent results of feasibility studies for measurement of production of <span>(phi (1020))</span>, <span>(rho {{(770)}^{0}},)</span> and <span>(K{text{*}}{{(892)}^{0}})</span> resonances in Bi + Bi collisions at <span>(sqrt {{{s}_{{NN}}}} )</span> = 9.2 GeV using the MPD detector at NICA collider in this article. Results are obtained using full-scale Monte Carlo simulations of heavy-ion collisions and the experimental apparatus.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"22 1","pages":"175 - 180"},"PeriodicalIF":0.4,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865564","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
Current Status of the Odderon
IF 0.4
Physics of Particles and Nuclei Letters Pub Date : 2025-04-23 DOI: 10.1134/S1547477124702078
M. G. Ryskin
{"title":"Current Status of the Odderon","authors":"M. G. Ryskin","doi":"10.1134/S1547477124702078","DOIUrl":"10.1134/S1547477124702078","url":null,"abstract":"<p>Odderon is the C-odd amplitude which does not die out (or dies very slowly) with energy. We consider the constrains on the Odderon properties and the perturbative QCD Odderon given at the lowest <span>({{alpha }_{s}})</span> order by the three gluon exchange. Then we discuss the experimental indications for the Odderon contribution to high energy proton-proton elastic scattering and some other processes in which the Odderon may reveal itself.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"22 1","pages":"187 - 190"},"PeriodicalIF":0.4,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865566","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
The Role of the Intrinsic-kT and Soft Gluon Contributions in Drell–Yan Production
IF 0.4
Physics of Particles and Nuclei Letters Pub Date : 2025-04-23 DOI: 10.1134/S1547477124702017
N. Raičević
{"title":"The Role of the Intrinsic-kT and Soft Gluon Contributions in Drell–Yan Production","authors":"N. Raičević","doi":"10.1134/S1547477124702017","DOIUrl":"10.1134/S1547477124702017","url":null,"abstract":"<p>A review of the most recent results on determination of parton internal transverse momentum in initial colliding hadron obtained within the Parton Branching Method is presented and its interplay with non-perturbative soft gluon contribution in Drell–Yan pairs production is discussed.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"22 1","pages":"156 - 160"},"PeriodicalIF":0.4,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865568","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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