International Journal of Modern Physics E-nuclear Physics最新文献_第3页

Production cross-sections and Radiative Decay widths of Heavy Quarkonia in magnetized matter 磁化物质中重夸克子的产生、截面和辐射衰变宽度

International Journal of Modern Physics E-nuclear Physics Pub Date : 2023-09-29 DOI: 10.1142/s0218301323500489

Amruta Mishra, Ankit Kumar

{"title":"Production cross-sections and Radiative Decay widths of Heavy Quarkonia in magnetized matter","authors":"Amruta Mishra, Ankit Kumar","doi":"10.1142/s0218301323500489","DOIUrl":"https://doi.org/10.1142/s0218301323500489","url":null,"abstract":"We study the production cross-sections and radiative decay widths of heavy quarkonia (charmonia and bottomonia) in magnetized nuclear matter. The production cross-sections of the $psi(3770)$ and $Upsilon(4S)$, from the $Dbar D$ and $Bbar B$ scatterings respectively, are studied from the medium modifications of the masses and partial decay widths to open charm (bottom) mesons, of these heavy flavor mesons. Within a chiral effective model, the masses of the vector and pseudoscalar charmonium (bottomonium) states are calculated from the medium modification of a dilaton field, $chi$, which mimics the gluon condensates of QCD. In the presence of a magnetic field, there is mixing of the pseudoscalar (P) meson and the longitudinal component of the vector (V) meson (PV mixing), which leads to appreciable modifications of their masses. The radiative decay widths of the vector (V) heavy quarkonia to the pseudoscalar (P) mesons ($J/psirightarrow eta_c(1S) gamma$, $psi(2S)rightarrow eta_c(2S) gamma$ and $psi(1D)rightarrow eta_c(2S) gamma$ for the charm sector and $Upsilon(NS)rightarrow eta_b(NS)gamma$, $N$=1,2,3,4, for the bottom sector) in the magnetized asymmetric nuclear matter are also investigated in the present work. The difference in the mass of the transverse component from the longitudinal component of the vector meson, arising due to PV mixing, is observed as a double peak structure in the invariant mass spectrum of the production cross-section of $psi(3770)$. The modifications of the production cross-sections as well as the radiative decay widths of the heavy quarkonia in the magnetized matter should have observable consequences on the production of these heavy flavour mesons resulting from ultra-relativistic peripheral heavy ion collision experiments, where the created magnetic field can be extremely large.","PeriodicalId":14032,"journal":{"name":"International Journal of Modern Physics E-nuclear Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135193064","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

A review on anisotropic flow in heavy-ion collisions 重离子碰撞中各向异性流动的研究进展

International Journal of Modern Physics E-nuclear Physics Pub Date : 2023-09-21 DOI: 10.1142/s0218301323410033

Vipul Bairathi, Kishora Nayak

引用次数: 0

An improved microscopic core–quasiparticle coupling model for spectroscopy of odd-mass nuclei with octupole correlations 一种改进的八极相关奇质量原子核光谱的微观核-准粒子耦合模型

International Journal of Modern Physics E-nuclear Physics Pub Date : 2023-07-28 DOI: 10.1142/s0218301323400062

Xin Zhao, Zhipan Li, Dario Vretenar

引用次数: 0

Systematic study of two-proton radioactivity half-lives based on a modified Gamow-like model 基于改进的类gamow模型的双质子放射性半衰期的系统研究

International Journal of Modern Physics E-nuclear Physics Pub Date : 2021-08-19 DOI: 10.1142/S0218301321500749

Hong-Ming Liu, Y. Zou, Xiao Pan, B. He, Xiao-Hua Li

引用次数: 1

Current status of different detector technology in the searches of 0νββ decay 不同探测器技术在寻找0νββ衰变中的现状

International Journal of Modern Physics E-nuclear Physics Pub Date : 2021-08-19 DOI: 10.1142/S0218301321300083

S. Karmakar, M. Singh

引用次数: 0

Study of the enhancement factor and electron potential in the D (3He, p)4He reaction using deuterated metal targets TiD and ZrD 用氘化金属靶品TiD和ZrD研究D (3He, p)4He反应的增强因子和电子势

International Journal of Modern Physics E-nuclear Physics Pub Date : 2021-06-24 DOI: 10.1142/S0218301321500452

V. Bystritsky, D. Chumakov, G. Dudkin, M. Filipowicz, B. Nechaev, A. Nurkin, V. N. Padalko, F. Pen'kov, A. Philippov, Y. Tuleushev, V. A. Varlachev, E. Zhakanbaev

{"title":"Study of the enhancement factor and electron potential in the D (3He, p)4He reaction using deuterated metal targets TiD and ZrD","authors":"V. Bystritsky, D. Chumakov, G. Dudkin, M. Filipowicz, B. Nechaev, A. Nurkin, V. N. Padalko, F. Pen'kov, A. Philippov, Y. Tuleushev, V. A. Varlachev, E. Zhakanbaev","doi":"10.1142/S0218301321500452","DOIUrl":"https://doi.org/10.1142/S0218301321500452","url":null,"abstract":"The study of thermonuclear reactions such as D(d, p)3H, D(d, n)3He, T(d, n)3He, 3He(d, p)4He, and D(3He, p)4He is of great interest in the field of astrophysics, as it affects the primordial nucleosynthesis, as well as issues of stellar dynamics. These reactions are also of interest in thermonuclear power engineering, in connection with the increased interest in the possibility of practical application of thermonuclear fusion. In this work, the analysis of the results obtained in the course of studying the reaction D(3He, p)4He was carried out. The results were obtained by us in previous works on deuterated metal targets ZrD and TiD with Miller indices [111] and [100]. There is a need to more precise study of the effects accompanying thermonuclear reactions at low astrophysical energies. The purpose of this work is to study the behavior of the screening potential [Formula: see text] and the reaction enhancement factor [Formula: see text], depending on the crystal structure of targets and the interaction energy. The studies were carried out on a Hall accelerator (Tomsk, TPU) in the energy range [Formula: see text]([Formula: see text][Formula: see text]keV in lab reference frame with a step of 2[Formula: see text]keV. Experiments have shown that in reactions using metal deuterated targets a similar effect as in reactions using gas targets was observed. Specifically, an electron screening effect was observed, which leads to an increase in the reaction cross-section with decreasing energy, and in case of metal target this effect becomes stronger.","PeriodicalId":14032,"journal":{"name":"International Journal of Modern Physics E-nuclear Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87379150","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

Microscopic study of shape evolution and some important ground state properties of 190–210Au isotopes 190-210Au同位素形态演化及一些重要基态性质的微观研究

International Journal of Modern Physics E-nuclear Physics Pub Date : 2021-05-27 DOI: 10.1142/S021830132150049X

Vikesh Kumar, Pankaj Kumar, V. Thakur, S. Thakur, S. K. Dhiman

引用次数: 0

Fragmentation of carbon on elemental targets at 290AMeV 290AMeV时元素目标上的碳碎片

International Journal of Modern Physics E-nuclear Physics Pub Date : 2021-05-27 DOI: 10.1142/S0218301321500464

Hailong Duan, Jing-Ya Wu, T. Ma, Jun-Sheng Li, Hui-Ling Li, Ming-ming Xu, Ruizhu Yang, Dong-Hai Zhang, Zhi Zhang, Qi Wang, S. Kodaira

{"title":"Fragmentation of carbon on elemental targets at 290AMeV","authors":"Hailong Duan, Jing-Ya Wu, T. Ma, Jun-Sheng Li, Hui-Ling Li, Ming-ming Xu, Ruizhu Yang, Dong-Hai Zhang, Zhi Zhang, Qi Wang, S. Kodaira","doi":"10.1142/S0218301321500464","DOIUrl":"https://doi.org/10.1142/S0218301321500464","url":null,"abstract":"The total charge-changing cross-sections and the partial cross-sections for projectile fragments (PFs) production for the fragmentation of 12C on C, Al, Cu, Pb and CH2 targets at the highest energy of 290[Formula: see text]A[Formula: see text]MeV were studied. It was found that the total charge-changing reaction cross-sections and the partial reaction cross-sections of PFs production were independent of the beam energy, and increased with increase of mass of target for the same beam energy. The total charge-changing reaction cross-section was the same as the prediction of Bradt–Peters semi-empirical formula, PHITS and NUCFRG2 simulation models. The partial cross-section of PFs production increased with the increase of the mass of target, and it was the same as the prediction of NUCFRG2 models. The mean scattering angle of projectile particle was smaller than the average emission angle of PF, and the width of scattering angle distribution of projectile particle was smaller than that of emission angle distribution of PFs. The mean emission angle of PFs does not obviously depend on the target mass and beam energy in our studied beam energy regions.","PeriodicalId":14032,"journal":{"name":"International Journal of Modern Physics E-nuclear Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86117355","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: 1

Emission characteristics of target black fragments in 16O-Emulsion collisions at 3.7AGeV 3.7AGeV下16o -乳剂碰撞目标黑色碎片发射特性

International Journal of Modern Physics E-nuclear Physics Pub Date : 2021-05-17 DOI: 10.1142/S0218301321500427

S. Kamel, N. Abdallah, H. Yousef, E. El-Falaky

引用次数: 0

12C(20Ne, 16O)16O α-transfer reaction and astrophysical S-factors at 300keV 300keV下12C(20Ne, 16O)16O α-转移反应及天体物理s因子

International Journal of Modern Physics E-nuclear Physics Pub Date : 2021-05-01 DOI: 10.1142/S0218301321500397

A. Mondal, C. Basu, S. Adhikari, C. Bhattacharya, T. Rana, S. Kundu, S. Manna, R. Pandey, P. Roy, A. Sen, J. K. Meena, A. Saha, J. K. Sahoo, D. Basak, T. Bar, H. Pai, A. Bisoi, A. Mitra, P. Biswas

{"title":"12C(20Ne, 16O)16O α-transfer reaction and astrophysical S-factors at 300keV","authors":"A. Mondal, C. Basu, S. Adhikari, C. Bhattacharya, T. Rana, S. Kundu, S. Manna, R. Pandey, P. Roy, A. Sen, J. K. Meena, A. Saha, J. K. Sahoo, D. Basak, T. Bar, H. Pai, A. Bisoi, A. Mitra, P. Biswas","doi":"10.1142/S0218301321500397","DOIUrl":"https://doi.org/10.1142/S0218301321500397","url":null,"abstract":"The [Formula: see text]C([Formula: see text]Ne, [Formula: see text]O)[Formula: see text]O reaction has been used for the first time to determine ANC of [Formula: see text]O levels. The [Formula: see text]C([Formula: see text]Ne, [Formula: see text]O)[Formula: see text]O [Formula: see text]-transfer angular distributions are measured at [Formula: see text][Formula: see text]MeV and used to determine the ANC of the ground, 6.05[Formula: see text]MeV ([Formula: see text]), 6.13[Formula: see text]MeV ([Formula: see text]), 6.92[Formula: see text]MeV ([Formula: see text]) and 7.12[Formula: see text]MeV ([Formula: see text]) states of [Formula: see text]O. The ANC values are [Formula: see text] [Formula: see text] [Formula: see text], [Formula: see text] [Formula: see text], [Formula: see text] [Formula: see text], [Formula: see text] [Formula: see text] and [Formula: see text] [Formula: see text]. Astrophysical S-factors at 300[Formula: see text]keV are extracted [Formula: see text]) keV b and [Formula: see text] keV b[Formula: see text] using these ANC values by R-matrix theory.","PeriodicalId":14032,"journal":{"name":"International Journal of Modern Physics E-nuclear Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75759887","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