arXiv - PHYS - Nuclear Theory最新文献_第6页

Strangeness in Astrophysics 天体物理学中的奇异现象

arXiv - PHYS - Nuclear Theory Pub Date : 2024-09-10 DOI: arxiv-2409.06461

Laura Tolos

引用次数: 0

Quantum computing for extracting nuclear resonances 提取核共振的量子计算

arXiv - PHYS - Nuclear Theory Pub Date : 2024-09-10 DOI: arxiv-2409.06340

Hantao Zhang, Dong Bai, Zhongzhou Ren

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Towards few-body QCD on a quantum computer 在量子计算机上实现少数体 QCD

arXiv - PHYS - Nuclear Theory Pub Date : 2024-09-10 DOI: arxiv-2409.06403

J. J. Galvez-Viruet

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Implication of a negative effective range on the $Dbar{D}^*$ interaction and the nature of $X(3872)$ 负有效范围对 $Dbar{D}^*$ 相互作用的影响以及 $X(3872)$ 的性质

arXiv - PHYS - Nuclear Theory Pub Date : 2024-09-10 DOI: arxiv-2409.06409

Yi-Bo Shen, Ming-Zhu Liu, Zhi-Wei Liu, Li-Sheng Geng

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Beam energy dependence of net-hyperon yield and its implication on baryon transport mechanism 净质子产率的束能依赖性及其对重子输运机制的影响

arXiv - PHYS - Nuclear Theory Pub Date : 2024-09-10 DOI: arxiv-2409.06492

Chun Yuen Tsang, Rongrong Ma, Prithwish Tribedy, Zhangbu Xu

{"title":"Beam energy dependence of net-hyperon yield and its implication on baryon transport mechanism","authors":"Chun Yuen Tsang, Rongrong Ma, Prithwish Tribedy, Zhangbu Xu","doi":"arxiv-2409.06492","DOIUrl":"https://doi.org/arxiv-2409.06492","url":null,"abstract":"In the constituent quark model, each valence quark inside a baryon carries\u00001/3 unit of the baryon number. An alternative picture exists where the center\u0000of a Y-shaped topology of gluon fields, called the baryon junction, carries a\u0000unit baryon number. Studying baryon transport over a large rapidity gap\u0000($delta y$) in nuclear collisions provides a possible tool to distinguish\u0000these two pictures. A recent analysis of global data on net-proton yield at\u0000mid-rapidity in Au+Au collisions showed an exponential dependence on $delta y$\u0000and the exponential slope does not vary with event centrality, favoring the\u0000baryon junction picture. Since junctions are flavor blind, hyperons -- baryons\u0000containing valence strange quarks -- are expected to exhibit a similar behavior\u0000as the proton. This study aims to test this prediction by analyzing hyperon\u0000yields in Au+Au collisions at various energies. We observe that net-hyperon\u0000yields, after correcting for the strangeness production suppression, adhere to\u0000the expected exponential form. The extracted slope parameters for\u0000net-$Lambda$, net-$Xi$ and net-$Omega$ are consistent with each other and\u0000with those of net-proton within uncertainties, and exhibit no centrality\u0000dependence, further substantiating the baryon junction picture. Various\u0000implementations of the PYTHIA event generator, primarily based on valence\u0000quarks for baryon transport, are unable to simultaneously describe the slope\u0000parameters for all baryons.","PeriodicalId":501573,"journal":{"name":"arXiv - PHYS - Nuclear Theory","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142206813","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

Azimuthal modulations and extraction of generalized parton distributions 方位调制和广义粒子分布的提取

arXiv - PHYS - Nuclear Theory Pub Date : 2024-09-10 DOI: arxiv-2409.06882

Jian-Wei Qiu, Nobuo Sato, Zhite Yu

引用次数: 0

Baryon stopping and charge deposition in heavy-ion collisions due to gluon saturation 胶子饱和导致的重离子碰撞中的重子停止和电荷沉积

arXiv - PHYS - Nuclear Theory Pub Date : 2024-09-10 DOI: arxiv-2409.06788

Oscar Garcia-Montero, Sören Schlichting

引用次数: 0

Structure of near-threshold resonances with new interpretation scheme of complex compositeness 近阈值共振的结构与新的复合解释方案

arXiv - PHYS - Nuclear Theory Pub Date : 2024-09-10 DOI: arxiv-2409.06440

Tomona Kinugawa, Tetsuo Hyodo

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Alpha decay law of excited nuclei and its role in stellar decay rates 激发核的α衰变规律及其在恒星衰变率中的作用

arXiv - PHYS - Nuclear Theory Pub Date : 2024-09-10 DOI: arxiv-2409.06761

D. F. Rojas-Gamboa, N. G. Kelkar, O. L. Caballero

{"title":"Alpha decay law of excited nuclei and its role in stellar decay rates","authors":"D. F. Rojas-Gamboa, N. G. Kelkar, O. L. Caballero","doi":"arxiv-2409.06761","DOIUrl":"https://doi.org/arxiv-2409.06761","url":null,"abstract":"$alpha$ decay is one of the prominent decay modes in the nucleosynthesis of\u0000heavy and super-heavy elements synthesized at temperatures of the order of Giga\u0000Kelvin. To facilitate the investigation of the role played by the $alpha$\u0000decay half-lives of thermally excited nuclei in nucleosynthesis calculations,\u0000an empirical formula based on a model for the $alpha$ decay of nuclei in their\u0000ground and excited states to daughter nuclei in their ground or excited states\u0000is presented. Constants appearing in the analytical expression for the $alpha$\u0000decay half-life obtained within the model are treated as adjustable parameters\u0000and fitted to experimental data on 342 $alpha$ decays in the range of 82 $le\u0000Z_p le$ 94, to obtain an excitation energy-dependent decay law. Under the\u0000assumption that thermal equilibrium has been reached between nuclear states,\u0000temperature ($T$)-dependent half-lives, $t_{1/2}(T)$, for several of the\u0000experimentally studied $alpha$ emitters with 65 $le Z_p le$ 94 are presented\u0000using available data on the half-lives of excited nuclei. Though the general\u0000trend is a decrease in $t_{1/2}(T)$ at elevated temperatures, exceptional cases\u0000with increased half-lives are found in the case of some isomeric states. A list\u0000of such isomers provided in this work motivates future work involving\u0000considerations of their thermal equilibration and role in shaping kilonova\u0000light curves.","PeriodicalId":501573,"journal":{"name":"arXiv - PHYS - Nuclear Theory","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142206624","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

Phase Stability in the 3-Dimensional Open-source Code for the Chiral mean-field Model 手性均场模型三维开放源代码的相位稳定性

arXiv - PHYS - Nuclear Theory Pub Date : 2024-09-10 DOI: arxiv-2409.06837

Nikolas Cruz-Camacho, Rajesh Kumar, Mateus Reinke Pelicer, Jeff Peterson, T. Andrew Manning, Roland Haas, Veronica Dexheimer, Jaquelyn Noronha-Hostler

{"title":"Phase Stability in the 3-Dimensional Open-source Code for the Chiral mean-field Model","authors":"Nikolas Cruz-Camacho, Rajesh Kumar, Mateus Reinke Pelicer, Jeff Peterson, T. Andrew Manning, Roland Haas, Veronica Dexheimer, Jaquelyn Noronha-Hostler","doi":"arxiv-2409.06837","DOIUrl":"https://doi.org/arxiv-2409.06837","url":null,"abstract":"In this paper we explore independently for the first time three chemical\u0000potentials (baryon $mu_B$, charged $mu_Q$, and strange $mu_S$) in the Chiral\u0000mean-field (CMF) model. We designed and implemented texttt{CMF++}, a new\u0000version of the CMF model rewritten in texttt{C++} that is optimized, modular,\u0000and well-documented. texttt{CMF++} has been integrated into the MUSES\u0000Calculation Engine as a free and open source software module. The runtime\u0000improved in more than 4 orders of magnitude across all 3 chemical potentials,\u0000when compared to the legacy code. Here we focus on the zero temperature case\u0000and study stable, as well as metastable and unstable, vacuum, hadronic, and\u0000quark phases, showing how phase boundaries vary with the different chemical\u0000potentials. Due to the significant numerical improvements in texttt{CMF++}, we\u0000can calculate for the first time high-order susceptibilities within the CMF\u0000framework to study the properties of the quark deconfinement phase transition.\u0000We found phases of matter that include a light hadronic phase,\u0000strangeness-dominated hadronic phase, and quark deconfinement within our\u0000$mu_B$, $mu_S$, $mu_Q$ phase space. The phase transitions are of first,\u0000second (quantum critical point), and third order between these phases and we\u0000even identified a tricritical point.","PeriodicalId":501573,"journal":{"name":"arXiv - PHYS - Nuclear Theory","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142226246","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