arXiv - PHYS - Nuclear Theory最新文献_第4页

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":null,"pages":null},"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":null,"pages":null},"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

Color transparency in hard $pd$ collisions 硬 pd$ 碰撞中的色彩透明度

arXiv - PHYS - Nuclear Theory Pub Date : 2024-09-12 DOI: arxiv-2409.07845

A. B. Larionov

引用次数: 0

Spin-hydrodynamics of electrons in graphene and thermovortical magnetization 石墨烯中电子的自旋流体力学和热变形磁化

arXiv - PHYS - Nuclear Theory Pub Date : 2024-09-12 DOI: arxiv-2409.07764

Amaresh Jaiswal

引用次数: 0

First complete shell-model description of $^{254}$No: a new paradigm for superheavy nuclear structure studies 首次完整描述 $^{254}$No：超重核结构研究的新范例

arXiv - PHYS - Nuclear Theory Pub Date : 2024-09-12 DOI: arxiv-2409.08210

D. D. Dao, F. Nowacki

{"title":"First complete shell-model description of $^{254}$No: a new paradigm for superheavy nuclear structure studies","authors":"D. D. Dao, F. Nowacki","doi":"arxiv-2409.08210","DOIUrl":"https://doi.org/arxiv-2409.08210","url":null,"abstract":"In this letter, we report the latest developments in the beyond mean-field\u0000methods applied to the shell-model framework for the the description of heavy\u0000deformed nuclei. We extend our recent DNO-SM approach within the\u0000Variation-After-Projection (VAP) scheme, dubbed as DNO-SM(VAP). This approach\u0000naturally enables to a priori capture correlations more efficiently than the\u0000Projection-After-Variation (PAV) scheme which is commonly used in current\u0000theoretical modelings of nuclei. Using the Kuo-Herling effective interaction,\u0000we first examine the extended method by a systematic comparison of the binding\u0000energies, the yrast spectra and electromagnetic moments of some representative\u0000nuclei of masses ranging from $A=251$ to $A=256$. The results show that the VAP\u0000scheme variationally provides more bound solutions with respect to the PAV\u0000scheme, reflecting the additional correlations that were captured. Both\u0000spectra, dipole and spectroscopic quadrupole moments are reproduced favorably.\u0000We then focus on the case of $^{254}$No, one of the most studied elements\u0000experimentally, which can be considered as the portal to the superheavy region.\u0000The calculations show a striking agreement with the complete experimentally\u0000known spectroscopy: the yrast band, the isomers and K bands, providing new\u0000insights into its shell structure. The present successful description opens a\u0000new way for forthcoming spectroscopic studies of heavy and superheavy nuclei.","PeriodicalId":501573,"journal":{"name":"arXiv - PHYS - Nuclear Theory","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142226245","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

Optimal collision energy for realizing macroscopic high baryon-density matter 实现宏观高重子密度物质的最佳碰撞能量

arXiv - PHYS - Nuclear Theory Pub Date : 2024-09-12 DOI: arxiv-2409.07685

Hidetoshi Taya, Asanosuke Jinno, Masakiyo Kitazawa, Yasushi Nara

引用次数: 0

Quantifying the breakdown scale of pionless effective field theory 量化无先锋有效场理论的击穿尺度

arXiv - PHYS - Nuclear Theory Pub Date : 2024-09-12 DOI: arxiv-2409.08197

Andreas Ekström, Lucas Platter

引用次数: 0

Unified study of nucleon and $Δ$ baryon spectra and their strong decays with chiral dynamics 核子和 $Δ$ 重子光谱及其手性动力学强衰变的统一研究

arXiv - PHYS - Nuclear Theory Pub Date : 2024-09-12 DOI: arxiv-2409.07998

Hui-Hua Zhong, Ming-Sheng Liu, Ru-Hui Ni, Mu-Yang Chen, Xian-Hui Zhong, Qiang Zhao

{"title":"Unified study of nucleon and $Δ$ baryon spectra and their strong decays with chiral dynamics","authors":"Hui-Hua Zhong, Ming-Sheng Liu, Ru-Hui Ni, Mu-Yang Chen, Xian-Hui Zhong, Qiang Zhao","doi":"arxiv-2409.07998","DOIUrl":"https://doi.org/arxiv-2409.07998","url":null,"abstract":"In this work we systematically study both the mass spectra and strong decays\u0000of the nucleon and $Delta$ resonances up to the $N=2$ shell within a unified\u0000quark model framework with chiral dynamics. In this framework we achieve a good\u0000description of the strong decay properties of the well-established nucleon and\u0000$Delta$ resonances. Meanwhile, the mass reversal between $N(1440)1/2^{+}$ as\u0000the first radial excitation state and the $1P$-wave nucleon resonances can be\u0000explained. We show that the three-body spin-orbit potential arising from the\u0000one-gluon exchange can cause a large configuration mixing between\u0000$N(1520)3/2^-$ and $N(1700)3/2^-$, and is also responsible for the large\u0000splitting between $Delta(1600)1/2^-$ and $Delta(1700)1/2^-$. Some of these\u0000baryon resonances turn to weakly couple to the $Npi$, $Neta$, $KLambda$, and\u0000$KSigma$ channels, which may answer the question why they have not been\u0000established in these channels via the $pi N$ and $gamma N$ scatterings. It\u0000shows that these ``missing resonances\" may have large potentials to be\u0000established in the $Npipi$ final state due to their large decay rates into\u0000either the $Delta(1232)$ or $1P$-wave nucleon resonances via the pionic\u0000decays. Further experimental search for their signals in charmonium decays at\u0000BESIII is thus strongly recommended.","PeriodicalId":501573,"journal":{"name":"arXiv - PHYS - Nuclear Theory","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142206799","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