Nuclear Physics A最新文献

{"title":"A quantal diffusion approach for multinucleon transfer in heavy-ion collisions","authors":"A. Kayaalp ,&nbsp;M. Arik ,&nbsp;S.E. Ocal ,&nbsp;O. Yilmaz ,&nbsp;S. Ayik ,&nbsp;A.S. Umar","doi":"10.1016/j.nuclphysa.2024.122916","DOIUrl":"https://doi.org/10.1016/j.nuclphysa.2024.122916","url":null,"abstract":"<div><p>The stochastic mean-field (SMF) approach beyond the time-dependent-Hartree-Fock theory is used to explore the primary production cross sections in <span><math><mmultiscripts><mrow><mtext>Ni</mtext></mrow><mprescripts></mprescripts><none></none><mrow><mn>64</mn></mrow></mmultiscripts><mo>+</mo><msup><mrow></mrow><mrow><mn>130</mn></mrow></msup><mtext>Te</mtext></math></span> at the bombarding energy <span><math><msub><mrow><mi>E</mi></mrow><mrow><mtext>c.m.</mtext></mrow></msub><mo>=</mo><mn>184.3</mn></math></span> MeV and <span><math><mmultiscripts><mrow><mtext>Pb</mtext></mrow><mprescripts></mprescripts><none></none><mrow><mn>206</mn></mrow></mmultiscripts><mo>+</mo><msup><mrow></mrow><mrow><mn>118</mn></mrow></msup><mtext>Sn</mtext></math></span> at <span><math><msub><mrow><mi>E</mi></mrow><mrow><mtext>c.m.</mtext></mrow></msub><mo>=</mo><mn>436.8</mn></math></span> MeV. Secondary production cross-sections in the same systems are calculated using a statistical de-excitation model with GEMINI++ code. The obtained results are compared with available experimental data. Analysis employing SMF and GEMINI++ exhibit a good agreement with the experimental data.</p></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1050 ","pages":"Article 122916"},"PeriodicalIF":1.7,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141541958","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":"Excitation functions for natAg(α,x) reactions with detailed covariance analysis","authors":"Mahesh Choudhary ,&nbsp;Namrata Singh ,&nbsp;Mahima Upadhyay ,&nbsp;Punit Dubey ,&nbsp;Shweta Singh ,&nbsp;Sriya Paul ,&nbsp;Utkarsha Mishra ,&nbsp;S. Dasgupta ,&nbsp;J. Datta ,&nbsp;A. Kumar","doi":"10.1016/j.nuclphysa.2024.122917","DOIUrl":"https://doi.org/10.1016/j.nuclphysa.2024.122917","url":null,"abstract":"<div><p>Natural silver targets were irradiated using an alpha particle beam to measure the activation cross sections of radioisotopes within the energy range of 23–40 MeV. The newly obtained cross section data, compared with previous experimental results, underline the importance of this work in the context of nuclear reactions and medical applications. Alpha particle induced reaction with <span><math><msup><mrow></mrow><mrow><mi>n</mi><mi>a</mi><mi>t</mi></mrow></msup></math></span>Ag involved the production of radioisotopes such as ¹¹¹In, ¹⁰⁵Ag, <span><math><msup><mrow></mrow><mrow><mn>106</mn><mi>m</mi></mrow></msup></math></span>Ag. In this study, we focused on calculating correlation matrices for the <span><math><msup><mrow></mrow><mrow><mi>n</mi><mi>a</mi><mi>t</mi></mrow></msup></math></span>Ag(<em>α</em>,x) nuclear reactions. These matrices were generated by considering various interconnected variables, such as decay constants, particle number densities, <em>γ</em>-ray intensities and detector efficiencies for both monitor and sample nuclear reaction products.</p></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1050 ","pages":"Article 122917"},"PeriodicalIF":1.7,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141541957","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":"Corrigendum to “QCD parameters and SM-high precision from e+e−→ Hadrons: Updated” [Nucl. Phys. A 1046 (2024) 122873]","authors":"Stephan Narison","doi":"10.1016/j.nuclphysa.2024.122915","DOIUrl":"https://doi.org/10.1016/j.nuclphysa.2024.122915","url":null,"abstract":"&lt;div&gt;&lt;p&gt;&lt;em&gt;Parts 3 and 4 of the original Abstract have been modified as:&lt;/em&gt;&lt;/p&gt;&lt;p&gt;&lt;strong&gt;3.&lt;/strong&gt; I use these new values of the &lt;span&gt;&lt;math&gt;&lt;mi&gt;D&lt;/mi&gt;&lt;mo&gt;=&lt;/mo&gt;&lt;mn&gt;6&lt;/mn&gt;&lt;mo&gt;,&lt;/mo&gt;&lt;mn&gt;8&lt;/mn&gt;&lt;/math&gt;&lt;/span&gt; power corrections to extract &lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;α&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;s&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt; from the BNP lowest moment. To order &lt;span&gt;&lt;math&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;mi&gt;α&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;s&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;4&lt;/mn&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;/math&gt;&lt;/span&gt;, I find within the SVZ expansion: &lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;α&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;s&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;M&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;τ&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;mo&gt;|&lt;/mo&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mi&gt;e&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mi&gt;e&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;−&lt;/mo&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;S&lt;/mi&gt;&lt;mi&gt;V&lt;/mi&gt;&lt;mi&gt;Z&lt;/mi&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;mo&gt;=&lt;/mo&gt;&lt;mn&gt;0.3081&lt;/mn&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mn&gt;49&lt;/mn&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;f&lt;/mi&gt;&lt;mi&gt;i&lt;/mi&gt;&lt;mi&gt;t&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mn&gt;71&lt;/mn&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;mi&gt;α&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;s&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;5&lt;/mn&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt; [resp. &lt;span&gt;&lt;math&gt;&lt;mn&gt;0.3260&lt;/mn&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mn&gt;47&lt;/mn&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;f&lt;/mi&gt;&lt;mi&gt;i&lt;/mi&gt;&lt;mi&gt;t&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mn&gt;62&lt;/mn&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;mi&gt;α&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;s&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;5&lt;/mn&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;mo&gt;]&lt;/mo&gt;&lt;/math&gt;&lt;/span&gt; implying &lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;α&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;s&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;M&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;Z&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;mo&gt;|&lt;/mo&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mi&gt;e&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mi&gt;e&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;−&lt;/mo&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;S&lt;/mi&gt;&lt;mi&gt;V&lt;/mi&gt;&lt;mi&gt;Z&lt;/mi&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;mo&gt;=&lt;/mo&gt;&lt;mn&gt;0.1170&lt;/mn&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mn&gt;6&lt;/mn&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mn&gt;3&lt;/mn&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;e&lt;/mi&gt;&lt;mi&gt;v&lt;/mi&gt;&lt;mi&gt;o&lt;/mi&gt;&lt;mi&gt;l&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt; [resp. &lt;span&gt;&lt;math&gt;&lt;mn&gt;0.1192&lt;/mn&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mn&gt;6&lt;/mn&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mn&gt;3&lt;/mn&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;e&lt;/mi&gt;&lt;mi&gt;v&lt;/mi&gt;&lt;mi&gt;o&lt;/mi&gt;&lt;mi&gt;l&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;] for Fixed Order (FO) [resp. Contour Improved (CI)] PT series. They lead to the mean: &lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;α&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;s&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;M&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;τ&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;mo&gt;|&lt;/mo&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mi&gt;e&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mi&gt;e&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;−&lt;/mo&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;S&lt;/mi&gt;&lt;mi&gt;V&lt;/mi&gt;&lt;mi&gt;Z&lt;/mi&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;mo&gt;=&lt;/mo&gt;&lt;mn&gt;0.3179&lt;/mn&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mn&gt;58&lt;/mn&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;f&lt;/mi&gt;&lt;mi&gt;i&lt;/mi&gt;&lt;mi&gt;t&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mn&gt;81&lt;/mn&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;s&lt;/mi&gt;&lt;mi&gt;y&lt;/mi&gt;&lt;mi&gt;s&lt;/mi&gt;&lt;mi&gt;t&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt; and &lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;α&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;s&lt;/mi&gt;&lt;","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1050 ","pages":"Article 122915"},"PeriodicalIF":1.7,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0375947424000976/pdfft?md5=041d74ed5bc9b976ab931d614a6043bc&pid=1-s2.0-S0375947424000976-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141487414","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":"A modified macroscopic-microscopic nuclear mass formula within considering isospin effect and continuum states","authors":"Hai Fei Zhang","doi":"10.1016/j.nuclphysa.2024.122913","DOIUrl":"https://doi.org/10.1016/j.nuclphysa.2024.122913","url":null,"abstract":"<div><p>The coefficients of modified macroscopic-microscopic mass formula have been adjusted on 2267 experimental atomic masses extracted from the AME2012 atomic mass evaluation. Same as the Weizsäcker-Skyrme model the influence of the nuclear deformation on the macroscopic energy and the mirror nuclei constraint are also taken into account, and for the sake of the consistency of the model parameters between the macroscopic and the microscopic parts we approximate the isospin-dependent component of the macroscopic energy to the depth of the Woods-Saxon potential. Inspired by Kruppa prescription the continuum states are considered in the calculation of shell correction. Then the root-mean square (rms) deviation with respect to 2267 measured nuclear masses is 0.46 MeV. We predict the remaining 988 nuclei from the AME2012 with <span><math><mi>Z</mi><mo>,</mo><mi>N</mi><mo>&gt;</mo><mn>7</mn></math></span> for which the mass is still unknown or known with a higher uncertainty. In addition the <em>α</em>−decay energies of seven chains in the superheavy nuclei region with <span><math><mi>Z</mi><mo>=</mo><mn>117</mn><mo>,</mo><mn>118</mn></math></span> are evaluated.</p></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1049 ","pages":"Article 122913"},"PeriodicalIF":1.4,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141323075","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":"Study on the reaction channels in the 6Li+89Y system with multi-angular proton and deutron-γ coincidence analysis","authors":"M.L. Wang ,&nbsp;G.X. Zhang ,&nbsp;S.P. Hu ,&nbsp;G.L. Zhang ,&nbsp;H.Q. Zhang ,&nbsp;H.B. Sun ,&nbsp;D. Testov ,&nbsp;P.R. John ,&nbsp;J.J. Valiente-Dobón ,&nbsp;A. Goasduff ,&nbsp;M. Siciliano ,&nbsp;F. Galtarossa ,&nbsp;F. Recchia ,&nbsp;D. Mengoni ,&nbsp;D. Bazzacco","doi":"10.1016/j.nuclphysa.2024.122914","DOIUrl":"10.1016/j.nuclphysa.2024.122914","url":null,"abstract":"<div><p>The ⁶Li+⁸⁹Y experiment was conducted at the Legnaro National Laboratory in Italy to explore the influence of breakup and transfer reactions on the fusion process induced by the weakly bound projectiles. Due to the competition between neutron and proton evaporation, complete and incomplete fusion might produce identical residues, leading to the difficulties in identification of different reaction process. In this work, the High-Purity-Germanium (HPGe) detector array (GALILEO) was employed to measure <em>γ</em> rays, and the silicon detector array (EUCLIDES) was utilized to capture light charged particles. Exclusive measurements of prompt <em>γ</em> rays from residuals with various light charged particles at an energy near the Coulomb barrier are reported. In the <span><math><mi>p</mi><mo>−</mo><mi>γ</mi></math></span> coincident measurements, observed ⁹¹Nb, ⁹²Nb, and ⁹³Nb is considered from neutron evaporation channel in complete fusion reaction, and ⁹⁰Y is generated through 1n stripping reaction. A two-step, breakup followed by fusion, in case of the capture of <em>α</em> is inferred to be the dominant mechanism to yield the ⁹²Nb and ⁹¹Nb in the deutron coincident exclusive measurement.</p></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1049 ","pages":"Article 122914"},"PeriodicalIF":1.4,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141398630","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":"The Gamow and the Fermi Golden Rules","authors":"Rafael de la Madrid","doi":"10.1016/j.nuclphysa.2024.122904","DOIUrl":"https://doi.org/10.1016/j.nuclphysa.2024.122904","url":null,"abstract":"<div><p>By using the fact that the Gamow states in the momentum representation are square integrable, we obtain the differential and the total decay width of a two-body, non-relativistic decay. The resulting Gamow Golden Rule is well suited to describe both energy and angular decay distributions, and it becomes the Fermi Golden Rule when the resonance is long-lived and far from the energy threshold. We also show that the correct density of states and phase space factors arise naturally from the Gamow Golden Rule. The upshot is that the Gamow states and the Golden Rule can be combined into a unified description of quantum resonances.</p></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1049 ","pages":"Article 122904"},"PeriodicalIF":1.4,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141294430","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":"Hamiltonian formalism for Bose excitations in a plasma with a non-Abelian interaction I: Plasmon – hard particle scattering","authors":"Yu.A. Markov,&nbsp;M.A. Markova,&nbsp;N.Yu. Markov","doi":"10.1016/j.nuclphysa.2024.122903","DOIUrl":"https://doi.org/10.1016/j.nuclphysa.2024.122903","url":null,"abstract":"<div><p>Hamiltonian theory for collective longitudinally polarized gluon excitations (plasmons) interacting with classical high-energy test color-charged particle propagating through a high-temperature gluon plasma is developed. A generalization of the Lie-Poisson bracket to the case of a continuous medium involving bosonic normal field variable <span><math><msubsup><mrow><mi>a</mi></mrow><mrow><mspace></mspace><mi>k</mi></mrow><mrow><mphantom><mo>⁎</mo></mphantom><mi>a</mi></mrow></msubsup></math></span> and a non-Abelian color charge <span><math><msup><mrow><mi>Q</mi></mrow><mrow><mspace></mspace><mi>a</mi></mrow></msup></math></span> is performed and the corresponding Hamilton equations are presented. The canonical transformations including simultaneously both bosonic degrees of freedom of the soft collective excitations and degree of freedom of hard test particle connecting with its color charge in the hot gluon plasma are written out. A complete system of the canonicity conditions for these transformations is derived. The notion of the plasmon number density <span><math><msubsup><mrow><mi>N</mi></mrow><mrow><mspace></mspace><mi>k</mi></mrow><mrow><mspace></mspace><mi>a</mi><mspace></mspace><msubsup><mrow><mi>a</mi></mrow><mrow><mphantom><mn>1</mn></mphantom></mrow><mrow><mo>′</mo></mrow></msubsup></mrow></msubsup></math></span>, which is a nontrivial matrix in the color space, is introduced. An explicit form of the effective fourth-order Hamiltonian describing the elastic scattering of a plasmon off a hard color particle is found and the self-consistent system of Boltzmann-type kinetic equations taking into account the time evolution of the mean value of the color charge of the hard particle is obtained. On the basis of these equations, a model problem of the interaction of two infinitely narrow wave packets is considered. A system of nonlinear first-order ordinary differential equations defining the dynamics of the interaction of the colorless <span><math><msubsup><mrow><mi>N</mi></mrow><mrow><mi>k</mi></mrow><mrow><mspace></mspace><mi>l</mi></mrow></msubsup></math></span> and color <span><math><msubsup><mrow><mi>W</mi></mrow><mrow><mi>k</mi></mrow><mrow><mspace></mspace><mi>l</mi></mrow></msubsup></math></span> components of the plasmon number density is derived. The problem of determining the third- and fourth-order coefficient functions entering into the canonical transformations of the original bosonic variable <span><math><msubsup><mrow><mi>a</mi></mrow><mrow><mspace></mspace><mi>k</mi></mrow><mrow><mphantom><mo>⁎</mo></mphantom><mi>a</mi></mrow></msubsup></math></span> and color charge <span><math><msup><mrow><mi>Q</mi></mrow><mrow><mspace></mspace><mi>a</mi></mrow></msup></math></span> is discussed. With the help of the coefficient functions obtained, a complete effective amplitude of the elastic scattering of plasmon off hard test particle is written out.</p></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1048 ","pages":"Article 122903"},"PeriodicalIF":1.4,"publicationDate":"2024-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141243709","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":"Assignment of charmed-strange Ds0(2590)+ and DsJ(3040)+","authors":"Zi-Han Jiang,&nbsp;Ailin Zhang","doi":"10.1016/j.nuclphysa.2024.122893","DOIUrl":"10.1016/j.nuclphysa.2024.122893","url":null,"abstract":"&lt;div&gt;&lt;p&gt;Based on analyses of the mass and the strong decay features, &lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;D&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;s&lt;/mi&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mn&gt;2590&lt;/mn&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;/math&gt;&lt;/span&gt; observed by LHCb collaboration is identified as a radial excitation of the pseudoscalar &lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;D&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;s&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;, and &lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;D&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;s&lt;/mi&gt;&lt;mi&gt;J&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mn&gt;3040&lt;/mn&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;/math&gt;&lt;/span&gt; observed by BaBar collaboration is identified as a radial excitation of &lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;D&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;s&lt;/mi&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mn&gt;2536&lt;/mn&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;±&lt;/mo&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;/math&gt;&lt;/span&gt;. &lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;D&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;s&lt;/mi&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mn&gt;2590&lt;/mn&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;/math&gt;&lt;/span&gt; is possibly a pure &lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;D&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;s&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;mspace&gt;&lt;/mspace&gt;&lt;mmultiscripts&gt;&lt;mrow&gt;&lt;mi&gt;S&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;/mrow&gt;&lt;none&gt;&lt;/none&gt;&lt;mprescripts&gt;&lt;/mprescripts&gt;&lt;none&gt;&lt;/none&gt;&lt;mrow&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;/mrow&gt;&lt;/mmultiscripts&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/math&gt;&lt;/span&gt; meson, both basic &lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;D&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;s&lt;/mi&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mn&gt;2536&lt;/mn&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;±&lt;/mo&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;/math&gt;&lt;/span&gt; and radially excited &lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;D&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;s&lt;/mi&gt;&lt;mi&gt;J&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mn&gt;3040&lt;/mn&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;/math&gt;&lt;/span&gt; are possibly the mixtures &lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;D&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;s&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mi&gt;n&lt;/mi&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;P&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/math&gt;&lt;/span&gt; between spin triplet &lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;D&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;s&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mi&gt;n&lt;/mi&gt;&lt;mspace&gt;&lt;/mspace&gt;&lt;mmultiscripts&gt;&lt;mrow&gt;&lt;mi&gt;P&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;/mrow&gt;&lt;none&gt;&lt;/none&gt;&lt;mprescripts&gt;&lt;/mprescripts&gt;&lt;none&gt;&lt;/none&gt;&lt;mrow&gt;&lt;mn&gt;3&lt;/mn&gt;&lt;/mrow&gt;&lt;/mmultiscripts&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/math&gt;&lt;/span&gt; and spin singlet &lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;D&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;s&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mi&gt;n&lt;/mi&gt;&lt;mspace&gt;&lt;/mspace&gt;&lt;mmultiscripts&gt;&lt;mrow&gt;&lt;mi&gt;P&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;/mrow&gt;&lt;none&gt;&lt;/none&gt;&lt;mprescripts&gt;&lt;/mprescripts&gt;&lt;none&gt;&lt;/none&gt;&lt;mrow&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;/mrow&gt;&lt;/mmultiscripts&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/math&gt;&lt;/span&gt;. In this arrangement, their masses meet the linear behavior of the radial Regge trajectory very well. In the &lt;span&gt;&lt;math&gt;&lt;mmultiscripts&gt;&lt;mrow&gt;&lt;mi&gt;P&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;/mrow&gt;&lt;none&gt;&lt;/none&gt;&lt;mprescripts&gt;&lt;/mprescripts&gt;&lt;none&gt;&lt;/none&gt;&lt;mrow&gt;&lt;mn&gt;3&lt;/mn&gt;&lt;/mrow&gt;&lt;/mmultiscripts&gt;&lt;/math&gt;&lt;/span&gt; strong decay model, the decay channels of &lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;D&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;s&lt;/mi&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mn&gt;2590&lt;/mn&gt;&lt;mo&gt;)&lt;/mo","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1048 ","pages":"Article 122893"},"PeriodicalIF":1.4,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141025434","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":"Study of binary fragmentation dynamics of 260Rf compound nucleus at an excitation energy of 85.7 MeV","authors":"Amit ,&nbsp;Chetan Sharma ,&nbsp;Shruti ,&nbsp;Raghav ,&nbsp;Subodh ,&nbsp;Amninderjeet Kaur ,&nbsp;P. Sugathan ,&nbsp;A. Jhingan ,&nbsp;N. Saneesh ,&nbsp;K.S. Golda ,&nbsp;Mohit Kumar ,&nbsp;D. Arora ,&nbsp;Vikas ,&nbsp;Neeraj Kumar ,&nbsp;B.R. Behera ,&nbsp;H.J. Wollersheim ,&nbsp;J. Gerl","doi":"10.1016/j.nuclphysa.2024.122892","DOIUrl":"https://doi.org/10.1016/j.nuclphysa.2024.122892","url":null,"abstract":"<div><p>The fission dynamics has been studied for a near super heavy compound nucleus ²⁶⁰Rf populated through ²⁸Si + ²³²Th reaction at an excitation energy of 85.7 MeV. Full momentum transfer binary events were separated from the transfer induced fission events. The contribution from transfer induced fission has been found to be <span><math><mn>7</mn><mo>±</mo><mn>2</mn><mtext>%</mtext></math></span>. Mas ratio distribution, mass-total kinetic energy (TKE), and mass angle correlation have been extracted for the full momentum transfer events using two body kinematics. The experimentally extracted width of mass distribution is higher than the mass width calculated theoretically using the saddle-point model, which indicates the presence of non-compound nuclear fission in the reaction under study. The mass-TKE distribution obtained for ²⁶⁰Rf nucleus matches with the theoretical predictions from the Viola systematics and GEneral description of Fission observables (GEF) model. The mass-angle distribution for the reaction under study indicates no significant correlation between the mass and emission angles of the fission fragments.</p></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1048 ","pages":"Article 122892"},"PeriodicalIF":1.4,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140950614","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":"Study of C12(γ→,p)11B reactions with polarized photons at energy 40-65 MeV","authors":"D.D. Burdeinyi ,&nbsp;V.B. Ganenko ,&nbsp;J.R.M. Annand ,&nbsp;R. Al Jebali ,&nbsp;K. Hansen ,&nbsp;K. Fissum ,&nbsp;J. Brudvik ,&nbsp;L. Isaksson ,&nbsp;K. Livingston ,&nbsp;B. Nilsson ,&nbsp;B. Schroder","doi":"10.1016/j.nuclphysa.2024.122891","DOIUrl":"https://doi.org/10.1016/j.nuclphysa.2024.122891","url":null,"abstract":"<div><p>The photon beam asymmetry of the <span><math><mmultiscripts><mrow><mi>C</mi></mrow><mprescripts></mprescripts><none></none><mrow><mn>12</mn></mrow></mmultiscripts><msup><mrow><mo>(</mo><mover><mrow><mi>γ</mi></mrow><mrow><mo>→</mo></mrow></mover><mo>,</mo><msub><mrow><mi>p</mi></mrow><mrow><mn>01</mn></mrow></msub><mo>)</mo></mrow><mrow><mn>11</mn></mrow></msup><mi>B</mi></math></span> and <span><math><mmultiscripts><mrow><mi>C</mi></mrow><mprescripts></mprescripts><none></none><mrow><mn>12</mn></mrow></mmultiscripts><msup><mrow><mo>(</mo><mover><mrow><mi>γ</mi></mrow><mrow><mo>→</mo></mrow></mover><mo>,</mo><msub><mrow><mi>p</mi></mrow><mrow><mn>2</mn><mo>−</mo><mn>6</mn></mrow></msub><mo>)</mo></mrow><mrow><mn>11</mn></mrow></msup><mi>B</mi></math></span> reactions has been measured in the energy range 40–65 MeV, using a tagged, linearly-polarized photon beam at the MAX-lab facility in Sweden. The asymmetry of the <span><math><mmultiscripts><mrow><mi>C</mi></mrow><mprescripts></mprescripts><none></none><mrow><mn>12</mn></mrow></mmultiscripts><msup><mrow><mo>(</mo><mover><mrow><mi>γ</mi></mrow><mrow><mo>→</mo></mrow></mover><mo>,</mo><msub><mrow><mi>p</mi></mrow><mrow><mn>01</mn></mrow></msub><mo>)</mo></mrow><mrow><mn>11</mn></mrow></msup><mi>B</mi></math></span> reaction to ground and first excited state of <span><math><mmultiscripts><mrow><mi>B</mi></mrow><mprescripts></mprescripts><none></none><mrow><mn>11</mn></mrow></mmultiscripts></math></span> is <span><math><mi>Σ</mi><mo>≈</mo><mn>0.82</mn></math></span> over the measured energy range. The main contribution to the <span><math><mmultiscripts><mrow><mi>C</mi></mrow><mprescripts></mprescripts><none></none><mrow><mn>12</mn></mrow></mmultiscripts><msup><mrow><mo>(</mo><mover><mrow><mi>γ</mi></mrow><mrow><mo>→</mo></mrow></mover><mo>,</mo><msub><mrow><mi>p</mi></mrow><mrow><mn>2</mn><mo>−</mo><mn>6</mn></mrow></msub><mo>)</mo></mrow><mrow><mn>11</mn></mrow></msup><mi>B</mi></math></span> reaction to higher excited states comes from processes in which the residual nucleus is in the <span><math><mn>3</mn><mo>/</mo><msup><mrow><mn>2</mn></mrow><mrow><mo>−</mo></mrow></msup></math></span>(5.02<!--> <!-->MeV) or <span><math><mn>7</mn><mo>/</mo><msup><mrow><mn>2</mn></mrow><mrow><mo>−</mo></mrow></msup></math></span>(6.74<!--> <!-->MeV) excited states. The asymmetry of this reaction is <span><math><mi>Σ</mi><mo>≈</mo><mn>0.6</mn></math></span>, close to the value for free deuteron photodisintegration.</p></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1048 ","pages":"Article 122891"},"PeriodicalIF":1.4,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140950616","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}