Physics Letters B最新文献

{"title":"Electromagnetic |GE/GM| ratios of hyperons at large timelike q2","authors":"G. Ramalho ,&nbsp;M.T. Peña ,&nbsp;K. Tsushima ,&nbsp;Myung-Ki Cheoun","doi":"10.1016/j.physletb.2024.139060","DOIUrl":"10.1016/j.physletb.2024.139060","url":null,"abstract":"<div><div>In recent years, it has become possible to measure not only the magnitude of the electric (<span><math><msub><mrow><mi>G</mi></mrow><mrow><mi>E</mi></mrow></msub></math></span>) and magnetic (<span><math><msub><mrow><mi>G</mi></mrow><mrow><mi>M</mi></mrow></msub></math></span>) form factors of spin <span><math><mfrac><mrow><mn>1</mn></mrow><mrow><mn>2</mn></mrow></mfrac></math></span> baryons, but also to measure the relative phases of those quantities in the timelike kinematic region. Aiming to interpret present <span><math><mo>|</mo><msub><mrow><mi>G</mi></mrow><mrow><mi>E</mi></mrow></msub><mo>/</mo><msub><mrow><mi>G</mi></mrow><mrow><mi>M</mi></mrow></msub><mo>|</mo></math></span> data on hyperons of the baryon octet, as well as to predict future data, we present model calculations of that ratio for large invariant 4-momentum square <span><math><msup><mrow><mi>q</mi></mrow><mrow><mn>2</mn></mrow></msup></math></span> in the timelike region (<span><math><msup><mrow><mi>q</mi></mrow><mrow><mn>2</mn></mrow></msup><mo>&gt;</mo><mn>0</mn></math></span>). Without any further parameter fitting, we extend to the timelike region a covariant quark model previously developed to describe the kinematic spacelike region (<span><math><msup><mrow><mi>q</mi></mrow><mrow><mn>2</mn></mrow></msup><mo>≤</mo><mn>0</mn></math></span>) of the baryon octet form factors. The model takes into account both the effects of valence quarks and the excitations of the meson cloud which dresses the baryons. This application to the timelike region assumes an approximation based on unitarity and analyticity that is valid only in the large <span><math><msup><mrow><mi>q</mi></mrow><mrow><mn>2</mn></mrow></msup></math></span> region. Using the recent data from BESIII we establish the regime of validity of this approximation. We report here that our results for the effective form factor (combination of <span><math><mo>|</mo><msub><mrow><mi>G</mi></mrow><mrow><mi>E</mi></mrow></msub><mo>|</mo></math></span> and <span><math><mo>|</mo><msub><mrow><mi>G</mi></mrow><mrow><mi>M</mi></mrow></msub><mo>|</mo></math></span>) are in good agreement with the data already for <span><math><msup><mrow><mi>q</mi></mrow><mrow><mn>2</mn></mrow></msup></math></span> values above 15 GeV². In addition, a more conservative onset of the validity of the approximation is provided by the newly available <span><math><mo>|</mo><msub><mrow><mi>G</mi></mrow><mrow><mi>E</mi></mrow></msub><mo>/</mo><msub><mrow><mi>G</mi></mrow><mrow><mi>M</mi></mrow></msub><mo>|</mo></math></span> data which suggest that our predictions may be compared against data for <span><math><msup><mrow><mi>q</mi></mrow><mrow><mn>2</mn></mrow></msup><mo>≥</mo></math></span> 20 GeV². This is expected in the near future, when the range of the present measurements is expanded to the 20–50 GeV² region.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"858 ","pages":"Article 139060"},"PeriodicalIF":4.3,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142446677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Reviving Horndeski after GW170817 by Kaluza-Klein compactifications","authors":"S. Mironov ,&nbsp;A. Shtennikova ,&nbsp;M. Valencia-Villegas","doi":"10.1016/j.physletb.2024.139058","DOIUrl":"10.1016/j.physletb.2024.139058","url":null,"abstract":"<div><div>The application of Horndeski theory/Galileons for late time cosmology is heavily constrained by the strict coincidence in the speed of propagation of gravitational and electromagnetic waves. These constraints presuppose that the minimally coupled photon is not modified, <em>not even at the scales where General Relativity (GR) may need modification</em>. We find that the 4D Galileon obtained from a Kaluza-Klein compactification of its higher dimensional version is a natural <em>simultaneous modification</em> of GR and electromagnetism with <strong>automatically “luminal” gravitational waves</strong>. This property follows without any fine tuning of Galileon potentials for a larger class of theories than previously thought. In particular, the <span><math><msub><mrow><mi>G</mi></mrow><mrow><mn>4</mn></mrow></msub></math></span> potential is not constrained by the speed test and <span><math><msub><mrow><mi>G</mi></mrow><mrow><mn>5</mn></mrow></msub></math></span> may also be present. In other words, some Galileon models that have been ruled out since the event GW170817 are, in fact, not necessarily constrained if they arise in 4D from compactifications of their higher dimensional Galileon counterparts. Besides their compelling luminality, the resulting <strong>vector Galileons</strong> are naturally <span><math><mi>U</mi><mo>(</mo><mn>1</mn><mo>)</mo></math></span> gauge invariant. We also argue that the Vainshtein screening that allows to recover GR predictions for solar system tests is also at work for electrodynamics in the dense region of laboratory tests.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"858 ","pages":"Article 139058"},"PeriodicalIF":4.3,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142428492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Inconsistency of modified gravity in cosmology","authors":"Pablo A. Cano","doi":"10.1016/j.physletb.2024.139059","DOIUrl":"10.1016/j.physletb.2024.139059","url":null,"abstract":"<div><div>We show that there is a fundamental flaw in the application of modified gravity theories in cosmology, taking <span><math><mi>f</mi><mo>(</mo><mi>R</mi><mo>)</mo></math></span> gravity as a paradigmatic example. This theory contains a scalar degree of freedom that couples to the matter stress-energy tensor but not to gravitational energy. However, when applied to cosmology this theory is unable to distinguish between gravitational and non-gravitational energy. Hence the cosmological version of the theory does not coincide with its own macroscopic average, and we show that this leads to order-one discrepancies. We argue that the same inconsistency is common to many other modified gravity theories with extra degrees of freedom. Our results put into question whether these theories can make sense as the cosmological average of a fundamental theory, hence challenging their physical significance.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"858 ","pages":"Article 139059"},"PeriodicalIF":4.3,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142428491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Triaxial deformation of neutron-rich Zr nuclei explored by high-resolution in-beam γ-ray spectroscopy","authors":"B. Moon ,&nbsp;W. Korten ,&nbsp;K. Wimmer ,&nbsp;P. Doornenbal ,&nbsp;T.R. Rodríguez ,&nbsp;N. Aoi ,&nbsp;H. Baba ,&nbsp;F. Browne ,&nbsp;C. Campbell ,&nbsp;S. Chen ,&nbsp;H. Crawford ,&nbsp;H. de Witte ,&nbsp;C. Fransen ,&nbsp;H. Hess ,&nbsp;E. Ideguchi ,&nbsp;S. Iwazaki ,&nbsp;J. Kim ,&nbsp;N. Kitamura ,&nbsp;A. Kohda ,&nbsp;T. Koiwai ,&nbsp;Y. Yamamoto","doi":"10.1016/j.physletb.2024.139047","DOIUrl":"10.1016/j.physletb.2024.139047","url":null,"abstract":"<div><div>Lifetimes of excited states in the very exotic nuclides ¹⁰⁸Zr₆₈ and ¹¹⁰Zr₇₀ were measured for the first time applying high-resolution in-beam <em>γ</em>-ray spectroscopy at relativistic energies. The experiment was carried out at the Radioactive Isotope Beam Factory in RIKEN, using nucleon removal reactions of radioactive Nb ions to produce ¹⁰⁸Zr and ¹¹⁰Zr. Emitted <em>γ</em> rays from the excited states were measured by the High-resolution Cluster Array at RIBF (HiCARI) and lifetimes were extracted from the observed line shapes caused by relativistic Doppler-shift effects. In addition to the new lifetime information, the precision of the <span><math><mi>E</mi><mo>(</mo><msubsup><mrow><mn>2</mn></mrow><mrow><mn>1</mn></mrow><mrow><mo>+</mo></mrow></msubsup><mo>)</mo></math></span> and <span><math><msub><mrow><mi>R</mi></mrow><mrow><mn>4</mn><mo>/</mo><mn>2</mn></mrow></msub><mo>=</mo><mi>E</mi><mo>(</mo><msubsup><mrow><mn>4</mn></mrow><mrow><mn>1</mn></mrow><mrow><mo>+</mo></mrow></msubsup><mo>)</mo><mo>/</mo><mi>E</mi><mo>(</mo><msubsup><mrow><mn>2</mn></mrow><mrow><mn>1</mn></mrow><mrow><mo>+</mo></mrow></msubsup><mo>)</mo></math></span> values of ¹¹⁰Zr could be significantly improved. The low-lying <span><math><msubsup><mrow><mn>2</mn></mrow><mrow><mn>2</mn></mrow><mrow><mo>+</mo></mrow></msubsup></math></span> states in both nuclei are also newly observed, which are indicative of the triaxiality. The various physical quantities were compared with theoretical models to investigate the collectivity in Zr isotopes towards <span><math><mi>N</mi><mo>=</mo><mn>70</mn></math></span>. Together the experimental and theoretical results point at a reduction of the axial deformation while triaxial collectivity increases.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"858 ","pages":"Article 139047"},"PeriodicalIF":4.3,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142428501","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Lattice determination of the Batalin-Vilkovisky function and the strong running interaction","authors":"A.C. Aguilar ,&nbsp;N. Brito ,&nbsp;M.N. Ferreira ,&nbsp;J. Papavassiliou ,&nbsp;O. Oliveira ,&nbsp;P.J. Silva","doi":"10.1016/j.physletb.2024.139054","DOIUrl":"10.1016/j.physletb.2024.139054","url":null,"abstract":"<div><div>The Batalin-Vilkovisky function is a central component in the modern formulation of the background field method and the physical applications derived from it. In the present work we report on novel lattice results for this particular quantity, obtained by capitalizing on its equality with the Kugo-Ojima function in the Landau gauge. The results of the lattice simulation are in very good agreement with the predictions derived from a continuum analysis based on the corresponding Schwinger-Dyson equations. In addition, we show that an important relation connecting this function with the ghost propagator is fulfilled rather accurately. With the aid of these results, we carry out the first completely lattice-based determination of the process-independent strong running interaction, employed in a variety of phenomenological studies.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"858 ","pages":"Article 139054"},"PeriodicalIF":4.3,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142428495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Survival probabilities of compound superheavy nuclei towards element 119","authors":"Yu Qiang ,&nbsp;Xiang-Quan Deng ,&nbsp;Yue Shi ,&nbsp;C.Y. Qiao ,&nbsp;Junchen Pei","doi":"10.1016/j.physletb.2024.139057","DOIUrl":"10.1016/j.physletb.2024.139057","url":null,"abstract":"<div><div>To synthesize superheavy element 119 is becoming a highly concerned issue as several experimental projects in major laboratories are being pursued. This work studied the survival probabilities of compound superheavy nuclei after multiple neutron emissions based on microscopic energy dependent fission barriers, demonstrating a significant role of triaxial deformation in decreasing the first fission barriers in the heaviest region. Together with the fusion cross sections by the dinuclear system model, the optimal energy and the residual cross section of ²⁴³Am(⁴⁸Ca, 3<em>n</em>)²⁸⁸Mc are reproduced. Finally the cross sections and optimal beam energies of ⁵⁴Cr+²⁴³Am and ⁵⁰Ti+²⁴⁹Bk reactions are estimated, providing clues for the synthesis of new elements.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"858 ","pages":"Article 139057"},"PeriodicalIF":4.3,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142428031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"N=2 higher-spin supercurrents","authors":"Nikita Zaigraev","doi":"10.1016/j.physletb.2024.139056","DOIUrl":"10.1016/j.physletb.2024.139056","url":null,"abstract":"<div><div>We have constructed conserved <span><math><mi>N</mi><mo>=</mo><mn>2</mn></math></span> higher-spin supercurrents for an arbitrary integer spin through the unconstrained superfield formulation of <span><math><mn>4</mn><mi>D</mi><mo>,</mo><mspace></mspace><mi>N</mi><mo>=</mo><mn>2</mn></math></span> massless higher-spin theories in the harmonic superspace. The obtained supercurrents are gauge-invariant and determine consistent cubic interactions in the <em>gauge superfield</em> × <em>supercurrent</em> form for massless spin <span><math><msub><mrow><mi>s</mi></mrow><mrow><mn>1</mn></mrow></msub></math></span> and two massless spin <span><math><msub><mrow><mi>s</mi></mrow><mrow><mn>2</mn></mrow></msub></math></span> <span><math><mi>N</mi><mo>=</mo><mn>2</mn></math></span> supermultiplets. Such interactions and <span><math><mi>N</mi><mo>=</mo><mn>2</mn></math></span> supercurrents exist only for <span><math><msub><mrow><mi>s</mi></mrow><mrow><mn>1</mn></mrow></msub><mo>≥</mo><mn>2</mn><msub><mrow><mi>s</mi></mrow><mrow><mn>2</mn></mrow></msub></math></span>. These supercurrents are the <span><math><mi>N</mi><mo>=</mo><mn>2</mn></math></span> supersymmetric extension of Berends-Burgers-van Dam higher-spin currents and generalize the linearized Bel-Robinson tensor. The relevant <span><math><mi>N</mi><mo>=</mo><mn>2</mn></math></span> supercurrents can be considered as the descendants of the <span><math><mi>N</mi><mo>=</mo><mn>2</mn></math></span> principle supercurrent, which has a simple universal structure. An important feature of our outcomes is that, ultimately, all <span><math><mi>N</mi><mo>=</mo><mn>2</mn></math></span> supercurrents are built from the <span><math><mi>N</mi><mo>=</mo><mn>2</mn></math></span> superfield strengths, which are constructed from the unconstrained analytical higher-spin prepotentials.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"858 ","pages":"Article 139056"},"PeriodicalIF":4.3,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142428490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"LHC di-lepton searches for Z′ bosons which explain measurements of b → sl+l− transitions","authors":"Ben Allanach","doi":"10.1016/j.physletb.2024.139055","DOIUrl":"10.1016/j.physletb.2024.139055","url":null,"abstract":"<div><div>Several current measurements of <span><math><mi>b</mi><mo>→</mo><mi>s</mi><msup><mrow><mi>l</mi></mrow><mrow><mo>+</mo></mrow></msup><msup><mrow><mi>l</mi></mrow><mrow><mo>−</mo></mrow></msup></math></span> processes are in tension with Standard Model predictions, whereas others (e.g. <span><math><msub><mrow><mi>R</mi></mrow><mrow><mi>K</mi></mrow></msub></math></span> and <span><math><msub><mrow><mi>R</mi></mrow><mrow><msup><mrow><mi>K</mi></mrow><mrow><mo>⁎</mo></mrow></msup></mrow></msub></math></span>) are in reasonable agreement with them. We examine some recent <span><math><msup><mrow><mi>Z</mi></mrow><mrow><mo>′</mo></mrow></msup></math></span> models that fit the data as a whole appreciably better than does the Standard Model, confronting the models with ATLAS resonance searches in the <span><math><msup><mrow><mi>e</mi></mrow><mrow><mo>+</mo></mrow></msup><msup><mrow><mi>e</mi></mrow><mrow><mo>−</mo></mrow></msup></math></span> and <span><math><msup><mrow><mi>μ</mi></mrow><mrow><mo>+</mo></mrow></msup><msup><mrow><mi>μ</mi></mrow><mrow><mo>−</mo></mrow></msup></math></span> channels. The models are constrained by both channels; we find that the searches rule out less than one fifth of the allowed range of <span><math><msub><mrow><mi>M</mi></mrow><mrow><msup><mrow><mi>Z</mi></mrow><mrow><mo>′</mo></mrow></msup></mrow></msub></math></span>. We estimate that the HL-LHC can roughly double the current sensitivity in <span><math><msub><mrow><mi>M</mi></mrow><mrow><msup><mrow><mi>Z</mi></mrow><mrow><mo>′</mo></mrow></msup></mrow></msub></math></span>, but to cover the whole of the parameter space would take a more powerful machine, such as a 100 TeV <em>pp</em> collider.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"858 ","pages":"Article 139055"},"PeriodicalIF":4.3,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142428404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Light rings and shadows of static black holes in effective quantum gravity","authors":"Wentao Liu ,&nbsp;Di Wu ,&nbsp;Jieci Wang","doi":"10.1016/j.physletb.2024.139052","DOIUrl":"10.1016/j.physletb.2024.139052","url":null,"abstract":"<div><div>Recently, two types of static black hole models that retain general covariance have been proposed within the Hamiltonian constraint approach to effective quantum gravity (EQG). We have studied the light rings and shadows of these black holes using the topological method and the backward ray-tracing method, respectively. We demonstrate that these light rings in both types of static black holes are standard and unstable according to the classification of light rings. Subsequently, we checked the position of the light rings using the photon trajectory equation. We found that although the quantum parameters do not affect the light rings of these two types of black holes, they do reduce the size of the first type of static black hole in EQG, making it smaller. However, for the second type of static black hole in EQG, we cannot distinguish it from a Schwarzschild black hole based on the shadow alone. Fortunately, the quantum parameters shrink the lensing rings of both types of black holes in EQG, causing the black hole shadow to occupy a larger proportion within the ring. This can serve as a basis for distinguishing whether the black hole is in EQG or general relativity (GR).</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"858 ","pages":"Article 139052"},"PeriodicalIF":4.3,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142428489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Time-kernel for lattice determinations of NLO hadronic vacuum polarization contributions to the muon g-2","authors":"Elisa Balzani ,&nbsp;Stefano Laporta ,&nbsp;Massimo Passera","doi":"10.1016/j.physletb.2024.139040","DOIUrl":"10.1016/j.physletb.2024.139040","url":null,"abstract":"<div><div>We study the time-momentum representation of the kernel needed to compute the hadronic vacuum polarization contribution to the muon <em>g</em>-2 in the space-like region at next-to-leading order. For small values of the time, we present analytical series expansions; for large values of the time, we present numerical series expansions which overcome the problems showed by naïve asymptotic expansions. These results are to be employed in lattice QCD determination of the hadronic vacuum polarization contribution to the muon <em>g</em>-2 at next-to-leading order.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"858 ","pages":"Article 139040"},"PeriodicalIF":4.3,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142428502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}