The European Physical Journal A最新文献

{"title":"Investigation of decay widths of charmed hadrons","authors":"Raghavendra Kaushal,&nbsp; Bhaghyesh","doi":"10.1140/epja/s10050-026-01983-5","DOIUrl":"10.1140/epja/s10050-026-01983-5","url":null,"abstract":"<div><p>The annihilation and radiative decay widths of fully charmed hadrons are investigated using a non-relativistic phenomenological potential model. The wavefunctions and model parameters obtained by solving the non-relativistic Schrodinger equation are used to calculate the various decay widths. The annihilation decay widths of charmonium, radiative decay widths of charmonium and triply charmed baryons are evaluated. It is seen that the radiative decays of charmonium are dominated by <i>E</i>1 and <i>M</i>1 transitions, whereas for triply charmed baryons the radiative decays are dominated by <i>E</i>2 and <i>M</i>1 transitions.</p></div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"62 11","pages":""},"PeriodicalIF":3.0,"publicationDate":"2026-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epja/s10050-026-01983-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149338644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Critical temperature in nonextensive hadron models: a pressure-based approach","authors":"M. A. A. Ahmed,&nbsp;H. Zainuddin","doi":"10.1140/epja/s10050-026-01987-1","DOIUrl":"10.1140/epja/s10050-026-01987-1","url":null,"abstract":"<div><p>The determination of the critical temperature <span>(T_c)</span> in strongly interacting matter is central to understanding the transition between confined hadronic matter and deconfined quark-gluon degrees of freedom. In high energy nuclear collisions, intrinsic fluctuations, memory effects, and long-range color interactions can drive the fireball evolution away from purely Markovian thermalization, making nonextensive statistical descriptions relevant near equilibrium. We investigate the critical temperature of nonextensive hadron models using a pressure-based formulation derived from Tsallis entropy. Here we show that the qualitative structure of the pressure equation is controlled by both the nonextensive parameter <i>q</i> and the model-dependent bag contribution <span>(B^{text {model}})</span>. For <span>(q=0)</span>, the pressure equations are monotonic and admit a unique positive root, whereas for <span>(q=1)</span> the seventh-order term vanishes and analytic solutions can be obtained. For <span>(q&gt;1)</span>, the negative <span>(T^7)</span> contribution modifies the pressure behavior and can generate multiple positive roots at finite volume. For <span>(qge 1)</span>, <span>(T^{text {model}}_c)</span> is <span>(left( 102.3le T_c^{text {MIT}}le 106.1, 86.5le T_c^{text {Dual}}le 87.8, text {and} 113.1right. )</span> <span>(left. le T_c^{text {Fuzzy}}le 121.1right) )</span> MeV. At <span>(q=0)</span>, <span>(T^{text {model}}_c sim 55)</span> MeV marks the nuclear liquid–gas transition. A weighted comparison constrained by the MIT bag model at <span>(q=1)</span> gives <span>((T_c^{text {w}}approx 102) text {MeV})</span>, with Fuzzy and Dual QCD terms entering as model-propagation corrections. The interval <span>((0.99le qle 1.002))</span> therefore provides the most reliable domain for a common physical interpretation and a composite estimate of the critical temperature.</p></div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"62 11","pages":""},"PeriodicalIF":3.0,"publicationDate":"2026-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149309567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Fully-beauty tensor tetraquark","authors":"S. S. Agaev,&nbsp;K. Azizi,&nbsp;H. Sundu","doi":"10.1140/epja/s10050-026-01978-2","DOIUrl":"10.1140/epja/s10050-026-01978-2","url":null,"abstract":"<div><p>Parameters of the fully-beauty tensor tetraquark <span>(T=bboverline{b}overline{b})</span> are computed using QCD sum rule method. The mass <i>m</i> and coupling <span>(Lambda )</span> of this state are evaluated by means of two-point sum rule approach. Prediction <span>(m=(18530 pm 86)~textrm{MeV})</span> for the mass demonstrates that <i>T</i> is stable against decays to pairs of <span>(eta _b eta _b)</span> and <span>(Upsilon Upsilon )</span> mesons. But it transforms to conventional particles due to <span>(overline{b}b)</span> annihilations to light quarks <span>(overline{q}q)</span> and <span>(overline{s}s)</span> followed by creation of mesons <span>(B^{(*)+}B^{( *)-})</span>, <span>(B^{(*)0}overline{B}^{(*)0})</span> and <span>(B_s^{(*)0}overline{B}_s^{(*)0})</span>. Partial width of these decay channels are calculated by invoking technical tools of three-point sum rule method. The latter allows us to estimate strong couplings at relevant tetraquark-meson-meson vertices and, hence, a width of the process under consideration. Our prediction <span>(Gamma =(48 pm 6)~textrm{MeV})</span> along with the mass of this state can be valuable for experimental studies of all-heavy resonances.</p></div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"62 10","pages":""},"PeriodicalIF":3.0,"publicationDate":"2026-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149339263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Flux-weighted average cross-sections for natGd(γ,xn) reactions leading to 159Gd, 153Gd and 151Gd","authors":"R. V. Avetisyan,&nbsp;H. A. Mkrtchyan,&nbsp;Yu. H. Gharibyan,&nbsp;A. Yu. Petrosyan,&nbsp;H. S. Gevorgyan,&nbsp;I. A. Kerobyan","doi":"10.1140/epja/s10050-026-01977-3","DOIUrl":"10.1140/epja/s10050-026-01977-3","url":null,"abstract":"<div><p>The photon flux-weighted average cross-sections of ^natGd(γ,xn)^151,153,159Gd reactions were measured at bremsstrahlung end-point energies of 30, 40, 50, and 60 MeV using a combination of activation techniques and off-line γ-ray spectrometry. The measurements were conducted at the LUE−75 linear electron accelerator facility of the A.I. Alikhanyan National Science Laboratory (AANL) in Yerevan, Armenia. To complement the experimental data, theoretical calculations of the ^natGd(γ,xn)^151,153,159Gd reactions weighted average cross-section as a function of bremsstrahlung end-point energy were carried out using the TALYS 2.0 and EMPIRE 3.2 codes. The results from the experimental measurements were compared with the predictions from these models, as well as with available experimental data from the literature. For ¹⁵¹Gd, experimental data on the weighted average cross-section are reported for the first time, thereby providing new reference values for this isotope.</p><p><b>Highlights</b></p><ul>\u0000 <li>\u0000 <p>Measurement of the ^natGd(γ,xn)^151,153,159Gd reactions at bremsstrahlung end-point energies of 30, 40, 50, and 60 MeV using activation techniques and off-line γ-ray spectrometry.</p>\u0000 </li>\u0000 <li>\u0000 <p>First experimental determination of the weighted average cross-sections for ¹⁵¹Gd, providing new reference data for this isotope.</p>\u0000 </li>\u0000 <li>\u0000 <p>Theoretical calculations of the weighted average cross-sections for the ^natGd(γ,xn)^151,153,159Gd reactions using the TALYS 2.0 and EMPIRE 3.2 codes.</p>\u0000 </li>\u0000 <li>\u0000 <p>Calculation of the photon-flux coefficient for the correct determination of photon flux.</p>\u0000 </li>\u0000 </ul></div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"62 10","pages":""},"PeriodicalIF":3.0,"publicationDate":"2026-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149339142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Isomeric yield ratios of fission products in the 232Th(γ, f) reaction with the bremsstrahlung end-point energies of 14 and 16 MeV","authors":"H. Naik,&nbsp;G. N. Kim,&nbsp;R. Schwengner,&nbsp;R. John,&nbsp;A. Wagner,&nbsp;A. Junghans,&nbsp;R. Massarczyk","doi":"10.1140/epja/s10050-026-01975-5","DOIUrl":"10.1140/epja/s10050-026-01975-5","url":null,"abstract":"<div><p>Isomeric yield ratios (IRs) of the fission products ^130,132Sb, ^131,133Te, ^134,136I, ¹³⁵Xe, and ¹³⁸Cs were measured in the photofission of ²³²Th using bremsstrahlung end-point energies of 14 and 16 MeV. The experiments were performed at the 20 MeV ELBE electron linac (Helmholtz-Zentrum Dresden-Rossendorf), employing an off-line γ-ray spectrometric technique. From the measured IR values, the average root-mean-square angular momenta (<i>J</i>_<i>RMS</i>) of the primary fragments were deduced using a spin-dependent statistical model analysis. The results demonstrate that <i>J</i>_<i>RMS</i> values of fission fragments with a spherical <i>N</i> = 82 shell are significantly lower than those for fragments without a closed neutron shell. Furthermore, the <i>J</i>_<i>RMS</i> of odd-Z fission products were found to be higher than those of adjacent even-Z products, suggesting a distinct single particle effect. These findings highlight the significant influence of nuclear structure on the fission process. A comparison with literature data at different energies suggests that the excitation energy of the compound nucleus has a negligible effect on the fragment angular momentum within the studied energy range.</p></div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"62 10","pages":""},"PeriodicalIF":3.0,"publicationDate":"2026-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149338945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Isospin-symmetry violation – kaons and beyond","authors":"Marek Gazdzicki,&nbsp;Francesco Giacosa,&nbsp;Katarzyna Grebieszkow,&nbsp;David Blaschke,&nbsp;Marcus Bleicher,&nbsp;Bastian Brandt,&nbsp;Wojciech Bryliński,&nbsp;Tobiasz Czopowicz,&nbsp;Jim Drachenberg,&nbsp;Dipangkar Dutta,&nbsp;Francesca Ercolessi,&nbsp;Mark Gorenstein,&nbsp;Linqin Huang,&nbsp;Oleksii Ivanytskyi,&nbsp;Nicolò Jacazio,&nbsp;Joseph Kapusta,&nbsp;Seweryn Kowalski,&nbsp;Maciej Piotr Lewicki,&nbsp;Manuel Lorenz,&nbsp;Stanisław Mrówczyński,&nbsp;Vitalii Ozvenchuk,&nbsp;Oleksandra Panova,&nbsp;Roman Płaneta,&nbsp;Krzysztof Piasecki,&nbsp;Milena Piotrowska,&nbsp;Rob Pisarski,&nbsp;Damian Pszczel,&nbsp;Johann Rafelski,&nbsp;Martin Rohrmoser,&nbsp;Andrzej Rybicki,&nbsp;Maciej Rybczyński,&nbsp;Radoslaw Ryblewski,&nbsp;Subhasis Samanta,&nbsp;Mayank Singh,&nbsp;Joanna Maria Stepaniak,&nbsp;Grzegorz Stefanek,&nbsp;Herbert Ströbele,&nbsp;Tatjana Šuša,&nbsp;Leonardo Tinti,&nbsp;Ludwik Turko,&nbsp;Oleksandr Vitiuk,&nbsp;Klaus Werner,&nbsp;Hanna Zbroszczyk","doi":"10.1140/epja/s10050-026-01965-7","DOIUrl":"10.1140/epja/s10050-026-01965-7","url":null,"abstract":"<div><p>This report summarizes the presentations and discussions during the ISO-BREAK 25 Workshop “Isospin symmetry violation: kaons and beyond”, which was held at Jan Kochanowski University in Kielce on October 23–25, 2025. We address the current status of the isospin-symmetry breaking discovered by NA61/SHINE in nucleus–nucleus collisions at the CERN SPS, its confirmation by other experiments and studies in <span>({textit{e}^+{+} textit{e}^-})</span> and deep inelastic scattering. In addition, we discuss the theoretical status as well as we outline experimental and theoretical priorities towards understanding this currently unexplained phenomenon.</p></div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"62 10","pages":""},"PeriodicalIF":3.0,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epja/s10050-026-01965-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149234503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Parameter adjustment of nuclear leading-order local pairing energy density functionals","authors":"Michael Bender,&nbsp;Karim Bennaceur,&nbsp;Valentin Guillon","doi":"10.1140/epja/s10050-026-01968-4","DOIUrl":"10.1140/epja/s10050-026-01968-4","url":null,"abstract":"<div><p>Phenomenological local pairing energy density functionals (EDFs) are widely used in the literature to complement Skyrme and other forms of effective EDFs that model the in-medium particle–hole interaction in nuclei. Because the amount of pair correlations induced by such pairing EDF scales with the level density of the underlying single-particle spectrum and the size of the pairing-active space, its parameters have to be specifically adjusted for each underlying choice of mean field and pairing regulator. The adjustment of pairing parameters that yield consistent results across many different Skyrme parameter sets is not a trivial task, mainly because of the large scatter in predictions for single-particle spectra. This study reports on the benchmarking of a protocol for the adjustment of the parameters of a local leading-order (LO) <span>(T=1)</span> (like-particle) pairing EDF that consists in adjusting the density-dependence of the <span>({}^{1}S_{0})</span> pairing gap at the chemical potential in infinite nuclear matter (INM). When using a suitably chosen reference calculation, this protocol leads to consistent results for the odd-even staggering of masses of spherical and heavy deformed nuclei and also for the rotational moments of inertia calculated in a time-reversal-breaking cranked HFB approach. The implementation of the HFB solver for infinite matter at arbitrary isospin asymmetry used for this study is sketched in appendices. Additional points that are discussed concern (i) the illustration that the gaps at the chemical potential are not necessarily sufficient to completely characterise the pairing interaction in infinite matter, and that adjusting LO pairing EDF to reproduce gaps obtained from finite-range pairing interactions in HFB or from more microscopic calculations can lead to unrealistic predictions for finite nuclei; (ii) the finding that some regions of the parameter space for the density dependence of the <span>(T=1)</span> LO pairing EDF lead to a spurious transition to a Bose–Einstein condensate of di-nucleons in spite of producing realistic pairing correlations for well-bound nuclei; (iii) the correlation between effective mass and the parameters of the LO pairing EDF that control the form factor of the density dependence when reproducing pairing gaps in infinite matter, (iv) the significant impact on the odd-even staggering of masses made by either including or not the spin-gradient terms in the particle–hole part of the Skyrme EDF; (v) the sizeable impact of keeping or not the contribution from the density-dependent LO pairing EDF to the mean fields on the odd-even staggering of radii.</p></div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"62 10","pages":""},"PeriodicalIF":3.0,"publicationDate":"2026-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149234464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Prospects for early heavy-quark measurements at the EIC","authors":"Allencris John Rubesh Rajan,&nbsp;Laboni Manna","doi":"10.1140/epja/s10050-026-01974-6","DOIUrl":"10.1140/epja/s10050-026-01974-6","url":null,"abstract":"<div><p>We assess the prospects for inclusive heavy-quark-pair electroproduction in electron–proton (<i>ep</i>) and electron–nucleus (<i>e</i>A) collisions, alongside double-charm-pair (<span>(D^0 bar{D}^0)</span> and <span>(D^0D^0)</span>) electroproduction in <i>ep</i> collisions, during the early operational phase of the Electron-Ion Collider (EIC). Based on the anticipated beam energies and luminosities of the EIC, we estimate the total cross sections and differential distributions for photon virtuality <span>(Q^2)</span>, heavy-quark transverse momentum, and rapidity. This analysis evaluates different Bjorken-<i>x</i> (<span>(x_textrm{Bj})</span>) intervals across a range of <span>(Q^2)</span> values. Expected event yields are estimated from the projected integrated luminosities of the early science programme, demonstrating the substantial improvement in statistical precision over previous HERA measurements at moderate and large <span>(x_{textrm{Bj}})</span>. For electron–nucleus collisions, we compute the nuclear modification ratio <span>(R^{etext {A}})</span> within collinear factorisation using nuclear parton distribution functions, and identify the kinematic regimes in which shadowing, anti-shadowing, and EMC-like suppression are accessible with early EIC data. These results are intended to serve as a parton-level baseline to support feasibility studies and to provide a reference for future higher-order theoretical and experimental investigations at the EIC.</p></div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"62 10","pages":""},"PeriodicalIF":3.0,"publicationDate":"2026-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epja/s10050-026-01974-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Integrating ensemble model and interpretable framework to unveil nuclear binding energy","authors":"Yonglin Huang,&nbsp;Bin Qi,&nbsp;Shijie Guo,&nbsp;Shouyu Wang,&nbsp;Yingzhuo Chen","doi":"10.1140/epja/s10050-026-01967-5","DOIUrl":"10.1140/epja/s10050-026-01967-5","url":null,"abstract":"<div><p>A machine learning ensemble model is constructed, comprising twenty stacked Bayesian Neural Networks and an XGBoost model. The physics-informed ensemble model enhances the prediction accuracy of nuclear binding energies, achieving a training accuracy of 46 keV and an overall accuracy of 60 keV for the data of AME2020. The testing accuracy of 97 keV crosses the 100 keV threshold required for nuclear astrophysical <i>r</i>-processes. Extrapolation performance is further validated on nuclei first newly measured after AME2020, yielding an accuracy of 175 keV. An Explanation–Causal Analysis–Threshold multi-scale analysis framework is employed to enhance model interpretability. The proposed approach, with its superior ability to both interpret and extrapolate, can be extended to other research fields.</p></div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"62 10","pages":""},"PeriodicalIF":3.0,"publicationDate":"2026-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Systematic shell-model study of (beta ^-)-decay properties and Gamow–Teller strength distributions in neutron-rich medium-mass nuclei","authors":"Surender,&nbsp;Vikas Kumar","doi":"10.1140/epja/s10050-026-01972-8","DOIUrl":"10.1140/epja/s10050-026-01972-8","url":null,"abstract":"<div><p>We perform large-scale shell-model (SM) calculations of the <span>(beta ^-)</span>-decay properties of neutron-rich nuclei with <span>(30 le Z le 35)</span> and <span>(42 le N le 50)</span>, employing different effective Hamiltonians within the <span>(f_{5/2}pg_{9/2})</span> model space. The calculations include half-lives, excitation energies, <span>(log ft)</span> values, summed <span>(B(textrm{GT}))</span> strengths, <i>Q</i> values, and branching ratios. A quenched axial-vector coupling, with a quenching factor of <span>(q = 0.71)</span> derived from our earlier study in the same model space (Surender et al., Eur. Phys. J. A <b>61</b>, 265 (2025)), is adopted and validated through Gamow–Teller matrix elements. Our results highlight the sensitivity of <span>(beta ^-)</span>-decay observables to the choice of effective interaction within this model space. A comprehensive SM study of the <span>(beta ^-)</span>-decay properties of nuclei in this region is presented here for the first time. Although the adopted model space is constrained by the omission of the <span>(f_{7/2})</span> and <span>(g_{7/2})</span> spin-orbit partner orbitals, the overall agreement with experimental data is satisfactory. Furthermore, Gamow–Teller strength distributions are systematically investigated by folding the discrete strengths with a 500 keV Lorentzian width.</p></div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"62 10","pages":""},"PeriodicalIF":3.0,"publicationDate":"2026-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149234701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}