arXiv - PHYS - Nuclear Theory最新文献_第3页

Effect of Magnetic Fields on Urca Rates in Neutron Star Mergers 磁场对中子星合并中乌卡率的影响

arXiv - PHYS - Nuclear Theory Pub Date : 2024-09-14 DOI: arxiv-2409.09423

Pranjal Tambe, Debarati Chatterjee, Mark Alford, Alexander Haber

引用次数: 0

Pion-nucleon scattering with decuplet contribution in heavy baryon SU(3) chiral perturbation theory 重重子SU(3)手性扰动理论中带有十亿分之一贡献的质子-核子散射

arXiv - PHYS - Nuclear Theory Pub Date : 2024-09-14 DOI: arxiv-2409.09388

Jing Ou-Yang, Bo-Lin Huang

引用次数: 0

Multiple-models prediction for light neutron-rich isotopes cross section by $Q_g$ systematics in $^{40}$Ar projectile fragmentation reactions ^{40}$Ar射弹碎裂反应中Q_g$系统学对轻中子富同位素截面的多模型预测

arXiv - PHYS - Nuclear Theory Pub Date : 2024-09-14 DOI: arxiv-2409.09367

X. B. Wei, H. L. Wei, C. W. Ma, C. Y. Qiao, Y. F. Guo, J. Pu, K. X. Cheng, Y. T. Wang, Z. X. Wang, T. R. Zhou, D. Peng, S. T. Wang, S. W. Tang, Y. H. Yu, X. H. Zhang, Y. Z. Sun, S. Y. Jin, G. L. Zhang, X. Jiang, Z. Y. Li, Y. F. Xu, F. H. Lu, T. Q. Liu

{"title":"Multiple-models prediction for light neutron-rich isotopes cross section by $Q_g$ systematics in $^{40}$Ar projectile fragmentation reactions","authors":"X. B. Wei, H. L. Wei, C. W. Ma, C. Y. Qiao, Y. F. Guo, J. Pu, K. X. Cheng, Y. T. Wang, Z. X. Wang, T. R. Zhou, D. Peng, S. T. Wang, S. W. Tang, Y. H. Yu, X. H. Zhang, Y. Z. Sun, S. Y. Jin, G. L. Zhang, X. Jiang, Z. Y. Li, Y. F. Xu, F. H. Lu, T. Q. Liu","doi":"arxiv-2409.09367","DOIUrl":"https://doi.org/arxiv-2409.09367","url":null,"abstract":"Precise predictions for nuclei near drip lines are crucial for experiments in\u0000new generation of rare isotope facilities. A multi-models investigation of the\u0000$Q_g$ systematics for fragments production cross sections, with $Q_g$ defined\u0000as the difference of mass excess (ME) between the projectile ($Z_{p}, A_{p}$)\u0000and the fragment ($Z_{f}, A_{f}$) nuclei $Q_{g}=ME(Z_{p}, A_{p})-ME(Z_{f},\u0000A_{f})$, has been performed to verify the model prediction abilities for light\u0000neutron-rich isotopes in measured $^{40}$Ar + $^9$Be projectile fragmentation\u0000reactions from 57$A$ MeV to 1$A$ GeV. The models used are the FRACS\u0000parametrizations and the newly developed Bayesian neural networks (BNN) model.\u0000%method The results show that FRACS, BNN, and $Q_g$ extrapolations are\u0000generally consistent, except for fragments near the nuclear mass of the\u0000projectile. Additionally, both measured data and model extrapolations provide\u0000evidence for a shell closure at $N=$ 16 in fluorine and neon, as well as the\u0000disappearance of the traditional magic number $N=$ 20 in neon, sodium and\u0000magnesium.","PeriodicalId":501573,"journal":{"name":"arXiv - PHYS - Nuclear Theory","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142263064","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

Optical model potentials for deuteron scattering off $^{24}$Mg, $^{28}$Si, $^{58}$Ni, $^{90}$Zr, $^{116}$Sn, and $^{208}$Pb at $sim$100 MeV/nucleon 氘核在 $^{24}$Mg, $^{28}$Si, $^{58}$Ni, $^{90}$Zr, $^{116}$Sn 和 $^{208}$Pb 以 $sim$100 MeV/nucleon 发生散射时的光学模型电位

arXiv - PHYS - Nuclear Theory Pub Date : 2024-09-13 DOI: arxiv-2409.08517

D. Patel, D. C. Cuong, K. B. Howard, U. Garg, Dao T. Khoa, H. Akimune, G. P. A. Berg, M. Fujiwara, M. N. Harakeh, M. Itoh, C. Iwamoto, T. Kawabata, K. Kawase, J. T. Matta, T. Murakami, M. Yosoi

{"title":"Optical model potentials for deuteron scattering off $^{24}$Mg, $^{28}$Si, $^{58}$Ni, $^{90}$Zr, $^{116}$Sn, and $^{208}$Pb at $sim$100 MeV/nucleon","authors":"D. Patel, D. C. Cuong, K. B. Howard, U. Garg, Dao T. Khoa, H. Akimune, G. P. A. Berg, M. Fujiwara, M. N. Harakeh, M. Itoh, C. Iwamoto, T. Kawabata, K. Kawase, J. T. Matta, T. Murakami, M. Yosoi","doi":"arxiv-2409.08517","DOIUrl":"https://doi.org/arxiv-2409.08517","url":null,"abstract":"Angular distributions of the elastic and inelastic deuteron-nucleus\u0000scattering off $^{24}$Mg, $^{28}$Si, $^{58}$Ni, $^{90}$Zr, $^{116}$Sn, and\u0000$^{208}$Pb have been measured at a beam energy of 98 MeV/nucleon, with the goal\u0000of constraining the deuteron optical potential in this kinematical regime, and\u0000to extract the reduced transition probabilities for the ground-state\u0000transitions to low-lying excited states of these nuclei. Two potential models\u0000were used in the analysis of the measured $(d,d)$ and $(d,d')$ data within the\u0000optical model and the distorted-wave Born approximation: the phenomenological\u0000optical model potential associated with the collective model of nuclear\u0000scattering, and the semi-microscopic double-folding model of the\u0000deuteron-nucleus potential based on a realistic density-dependent M3Y\u0000interaction. The deuteron optical potential and inelastic $(d,d')$ scattering\u0000form factors were calculated using these two potential models, allowing for a\u0000direct comparison between the potential models as well as the validation of the\u0000deduced $Elambda$ transition rates.","PeriodicalId":501573,"journal":{"name":"arXiv - PHYS - Nuclear Theory","volume":"213 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142269884","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

Heavy flavor angular correlations as a direct probe of the glasma 重味角相关性是对等离子体的直接探测

arXiv - PHYS - Nuclear Theory Pub Date : 2024-09-13 DOI: arxiv-2409.10565

Dana Avramescu, Vincenzo Greco, Tuomas Lappi, Heikki Mäntysaari, David Müller

引用次数: 0

Domain-wall Skyrmion phase of QCD in magnetic field: Gauge field dynamics 磁场中 QCD 的域壁 Skyrmion 相：量子场动力学

arXiv - PHYS - Nuclear Theory Pub Date : 2024-09-13 DOI: arxiv-2409.08841

Yuki Amari, Minoru Eto, Muneto Nitta

引用次数: 0

New insights into the analytic structure of correlation functions via kinetic theory 通过动力学理论对相关函数分析结构的新见解

arXiv - PHYS - Nuclear Theory Pub Date : 2024-09-13 DOI: arxiv-2409.09022

Robbe Brants

引用次数: 0

The impact of glasma on heavy flavor azimuthal correlations and spectra 等离子体对重味道方位相关性和光谱的影响

arXiv - PHYS - Nuclear Theory Pub Date : 2024-09-13 DOI: arxiv-2409.10564

Dana Avramescu, Vincenzo Greco, Tuomas Lappi, Heikki Mäntysaari, David Müller

{"title":"The impact of glasma on heavy flavor azimuthal correlations and spectra","authors":"Dana Avramescu, Vincenzo Greco, Tuomas Lappi, Heikki Mäntysaari, David Müller","doi":"arxiv-2409.10564","DOIUrl":"https://doi.org/arxiv-2409.10564","url":null,"abstract":"We study the phenomenological impact of the pre-equilibrium glasma initial\u0000stage of heavy-ion collisions on heavy quark azimuthal correlations and\u0000spectra. Using our numerical solver, we simulate the transport of heavy quark\u0000test particles in an SU(3) glasma background field. The glasma field equations\u0000are formulated using classical real-time lattice gauge theory, and the heavy\u0000quark dynamics are described by classical transport equations numerically\u0000solved using the colored particle-in-cell method. For the first time, the\u0000effect of the glasma stage on the azimuthal correlations of $coverline{c}$ and\u0000$boverline{b}$ pairs is studied. The resulting azimuthal width\u0000$sigma_{Deltaphi}$ exhibits a large and quick decorrelation due to the\u0000strong glasma fields. Further, we evaluate how the $p_T$-broadening in the\u0000glasma affects heavy quark $p_T$-spectra, which are initialized according to\u0000the FONLL heavy quark production calculation. The nuclear modification factor\u0000$R_{AA}$ is extracted for $c$ and $b$ quarks in the glasma and additional\u0000nuclear PDF effects accounting for gluon shadowing are included.","PeriodicalId":501573,"journal":{"name":"arXiv - PHYS - Nuclear Theory","volume":"104 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142263013","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

Resonance suppression during the hadronic stage from the FAIR to the intermediate RHIC energy regime 从 FAIR 到中级 RHIC 能量机制的强子阶段的共振抑制

arXiv - PHYS - Nuclear Theory Pub Date : 2024-09-13 DOI: arxiv-2409.08639

Amine Chabane, Lisa Engel, Tom Reichert, Jan Steinheimer, Marcus Bleicher

{"title":"Resonance suppression during the hadronic stage from the FAIR to the intermediate RHIC energy regime","authors":"Amine Chabane, Lisa Engel, Tom Reichert, Jan Steinheimer, Marcus Bleicher","doi":"arxiv-2409.08639","DOIUrl":"https://doi.org/arxiv-2409.08639","url":null,"abstract":"The energy and centrality dependence of the kaon resonance ratio\u0000$(K^{*0}+Bar{K}^{*0})/(K^+ + K^-)$ is explored in the RHIC-BES and CBM-FAIR\u0000energy regime. To this aim, the Ultra-relativistic Quantum Molecular Dynamics\u0000(UrQMD) model is employed to simulate reconstructable $K^{*}$ resonances in\u0000Au+Au and p+p collisions from $sqrt{s_{text{NN}}}=3-39$ GeV. We obtain a good\u0000description of the resonance yields and mean transverse momenta over the whole\u0000investigated energy range. The decrease of the $K^*/K$ ratio, with increasing\u0000centrality is in line with the available experimental data. We also observe the\u0000experimenatlly measured increase in $langle p_{text{T}}rangle$ with\u0000increasing centrality which is interpreted as a lower reconstruction\u0000probability of low-$p_{text{T}}$ $K^*$ due to the $p_{text{T}}$ dependent\u0000absorption of the decay daughter hadrons. We conclude that the observed\u0000suppression of reconstructable $K^{*}$ resonances provides a strong sign of an\u0000extended hadronic rescattering stage at all investigated energies. Its duration\u0000increases from peripheral to central reactions as expected. Following a method,\u0000suggested by the STAR experiment, the \"duration\" of the hadronic stage is\u0000extracted using the $K^*/K$ ratios at chemical and kinetic freeze-out. The\u0000resulting lifetimes are in good agreement with the experimental data, but much\u0000shorter than the actual lifetime of the hadronic phase in the transport\u0000simulation. This indicates that the experimental method to estimate the life\u0000time of the hadronic stage is too simplified.","PeriodicalId":501573,"journal":{"name":"arXiv - PHYS - Nuclear Theory","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142269887","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

First Extraction of Transverse Momentum Dependent Helicity Distributions 首次提取取决于横动量的螺旋分布

arXiv - PHYS - Nuclear Theory Pub Date : 2024-09-12 DOI: arxiv-2409.08110

Ke Yang, Tianbo Liu, Peng Sun, Yuxiang Zhao, Bo-Qiang Ma

引用次数: 0