Chinese Physics C最新文献_第2页

Cosmological test of dark energy parametrizations within the framework of Horava-Lifshitz gravity using via Baryon Acoustic Oscillation 通过重子声学振荡对霍拉瓦-利夫希茨引力框架内的暗能量参数化进行宇宙学检验

Chinese Physics C Pub Date : 2024-07-17 DOI: 10.1088/1674-1137/ad6419

H. Chaudhary, S. Pacif, U. Debnath, Prof. Farook Rahman, G. Mustafa

{"title":"Cosmological test of dark energy parametrizations within the framework of Horava-Lifshitz gravity using via Baryon Acoustic Oscillation","authors":"H. Chaudhary, S. Pacif, U. Debnath, Prof. Farook Rahman, G. Mustafa","doi":"10.1088/1674-1137/ad6419","DOIUrl":"https://doi.org/10.1088/1674-1137/ad6419","url":null,"abstract":"\u0000 We are conducting an investigation to explore late-time cosmic acceleration through various dark energy parametrizations (Wettrich, Efstathiou, and Ma-Jhang) within the Horava-Lifshitz gravity framework. As an alternative to general relativity, this theory introduces anisotropic scaling at ultraviolet scales. Our primary objective is to constrain the key cosmic parameters and the Baryon Acoustic Oscillation (BAO) scale, specifically the sound horizon ($r_{d}$) by utilizing 24 uncorrelated measurements of Baryon Acoustic Oscillations (BAO) derived from recent galaxy surveys, span a redshift range from $z = 0.106$ to $z = 2.33$. Additionally, we integrate the most recent Hubble constant measurement by Riess in 2022 (denoted as R22) as an extra prior. For Wettrich, Efstathiou, and Ma-Jhang, our analysis of Baryon Acoustic Oscillation (BAO) data yields sound horizon results of $r_{d}=148.1560 pm 2.7688 mathrm{Mpc}$, $r_{d}=148.6168 pm 10.2469 mathrm{Mpc}$, and $r_{d}=147.9737 pm 10.6096 mathrm{Mpc}$, respectively. Incorporating the R22 prior into the BAO dataset results in $r_{d}=139.5806 pm 3.8522 mathrm{Mpc}$, $r_{d}=139.728025 pm 2.7858 mathrm{Mpc}$, and $r_{d}=139.6001 pm 2.7441 mathrm{Mpc}$. These outcomes highlight a distinct inconsistency between early and late observational measurements, analogous to the $H_0$ tension. A notable observation is that, when we don't include the R22 prior, the outcomes for $r_d$ tend to be in agreement with Planck and SDSS results. Following this, we conducted the Cosmography test and presented a comparative study of each parametrization with the $Lambda$CDM paradigm. Our diagnostic analyses demonstrate that all models fit seamlessly within the phantom region. The statistical analysis indicates that neither of the two models can be ruled out based on the latest observational measurements.","PeriodicalId":504778,"journal":{"name":"Chinese Physics C","volume":" 47","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141831207","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 simple model for the two-proton radioactivity 双质子放射性的简单模型

Chinese Physics C Pub Date : 2024-07-17 DOI: 10.1088/1674-1137/ad6417

Jie-Dong Jiang, Xiao Liu, Dong-Meng Zhang, Ming Li, Xi-Jun Wu, Xiao-Hua Li

{"title":"A simple model for the two-proton radioactivity","authors":"Jie-Dong Jiang, Xiao Liu, Dong-Meng Zhang, Ming Li, Xi-Jun Wu, Xiao-Hua Li","doi":"10.1088/1674-1137/ad6417","DOIUrl":"https://doi.org/10.1088/1674-1137/ad6417","url":null,"abstract":"\u0000 In this work, considering the preformation factor of the emitted two protons in parent nucleus S2p replaced{and the effect of the parent nucleus deformation}{}, based on the Wentzel-Kramers-Brillouin approximation and Bohr-Sommerfeld quantization condition, we added{improve} a simple phenomenological model proposed by Bayrak [J. Phys. G: 47, 025102 (2020)] to systematically study the 2p radioactivity half-lives. added{In this model, it contains two adjustable parameter V0 and aβ, which are related to the depth of nuclear potential obtained and the effect of deformation. } The calculated results show that this model can effectively reproduce the experimental data with a corresponding root-mean-square (RMS) standard deviation sigma = replaced{0.683 }{0.700}. For comparison, the Gamow-like model (GLM) proposed by Liu et al. [Chin. Phys. C 45, 044110 (2021)], the generalized liquid drop model (GLDM) proposed by Cui et al. [Phys. Rev. C 101, 014301 (2020)], replaced{effective liquid drop model (ELDM) proposed by M. Gonalves et al. [Phys. Lett. B 774, 14 (2017)], the two-potential approach with Skyrme-Hartree-Fock (TPASHF) proposed by Pan et al. [Chin. Phys. C 45, 124104 (2021)], the phenomenological model with a screened electrostatic barrier (SEB) propoesed by Zou et al. [Chin. Phys. C 45, 104101 (2021)], the unified fission model (UFM) proposed by Xing et al. [Chin. Phys. C 45, 124105 (2021)] ,the Coulomb and proximity potential model for deformed nuclei (CPPMDN) proposed by Santhosh [Phys. Rev. C textbf{104}, 064613 (2021)],}{} a two-parameter empirical formula proposed by Liu emph{et al}. [Chin. Phys. C textbf{45}, 024108 (2021)], and a four-parameter empirical formula proposed by Sreeja et al. [Eur. Phys. J. A textbf{55}, 33 (2019)] are also used. In addition, we use this model to predict the 2p radioactive half-lives of some possible potential nuclei whose 2p radioactivity are energetically allowed or observed but not yet quantified in NUBASE2020.","PeriodicalId":504778,"journal":{"name":"Chinese Physics C","volume":" 29","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141828145","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

Thermal pairing treatment within the path integral formalism 路径积分形式中的热配对处理

Chinese Physics C Pub Date : 2024-07-17 DOI: 10.1088/1674-1137/ad641a

Mohamed Fellah, N. Allal, M. R. Oudih

{"title":"Thermal pairing treatment within the path integral formalism","authors":"Mohamed Fellah, N. Allal, M. R. Oudih","doi":"10.1088/1674-1137/ad641a","DOIUrl":"https://doi.org/10.1088/1674-1137/ad641a","url":null,"abstract":"\u0000 A method for the treatment of the pairing correlations at finite temperature is proposed within the path integral formalism. It is based on the square root extraction of the pairing term in the Hamiltonian of the system. Gap equations, as well as expressions of the pairing gap parameter Δ, the energy E and the heat capacity C are established. The formalism is first tested using the Richardson model which enables comparison with exact solution. The results obtained using the present formalism are also compared to the Finite Temperature BCS (FTBCS) ones. An improvement compared to the FTBCS model is noted especially at low temperature. Indeed, it is shown that the agreement between the Δ values of the present work and the exact ones is very good at low temperature. This leads to a better agreement between the values of E and C of the present model and the exact values than with the FTBCS values. However, a critical value of the temperature still exists. Realistic cases are then considered using single-particle energies of a deformed Woods-Saxon mean-field for the nuclei ¹⁶²Dy and ¹⁷²Yb. It is shown that in the framework of the present approach, the pairing effects persist beyond the FTBCS critical temperature. Moreover, at low temperature, a good agreement between the present model results and semiexperimental values of the heat capacity is observed. A clear improvement compared to the FTBCS method is noted. It is no more the case at higher temperature.","PeriodicalId":504778,"journal":{"name":"Chinese Physics C","volume":" 14","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141829047","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

Emerging γ-soft-like spectrum in 196Pt in the SU3-IBM (I) 196Pt在SU3-IBM中新出现的γ-软样光谱 (I)

Chinese Physics C Pub Date : 2024-05-23 DOI: 10.1088/1674-1137/ad4f70

Tao Wang, Chunxiao Zhou, Dong kang Li, Lorenzo Fortunato

引用次数: 0

A comparative lattice analysis of $SU(2)$ dark glueball SU(2)$暗胶球的晶格比较分析

Chinese Physics C Pub Date : 2024-05-21 DOI: 10.1088/1674-1137/ad4e24

Wei Wang

{"title":"A comparative lattice analysis of $SU(2)$ dark glueball","authors":"Wei Wang","doi":"10.1088/1674-1137/ad4e24","DOIUrl":"https://doi.org/10.1088/1674-1137/ad4e24","url":null,"abstract":"\u0000 We study the mass and scattering cross section of $SU(2)$ glueballs as dark matter candidates using lattice simulations. We employ both naive and improved $SU(2)$ gauge actions in $3+1$ dimensions with several $beta$ values, and adopt both the traditional Monte Carlo method and the flow-based model based on machine learning techniques to generate lattice configurations. The mass of dark scalar glueball with $J^{PC}=0^{++}$ and the NBS wave function are calculated. Using a coupling constant of $beta=2.2$ as an illustration, we compare the dark glueball mass calculated from the configurations generated from the two methods. While consistent results can be achieved, the two methods demonstrate distinct advantages. Using the Runge-Kutta method, we extract the glueball interaction potential and two-body scattering cross section. From the observational constraints, we obtain the lower bound of the mass of scalar glueball as candidates of dark matter. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Article funded by SCOAP3 and published under licence by Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Science and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd.","PeriodicalId":504778,"journal":{"name":"Chinese Physics C","volume":"20 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141113889","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

Imprints of a gravitational wave through the weak field deflection of photons 引力波通过光子的弱场偏转留下的印记

Chinese Physics C Pub Date : 2024-05-21 DOI: 10.1088/1674-1137/ad4e25

R. C. Pantig, A. Övgün

引用次数: 0

Evaluation of Neutron Cross Sections of 48Ti based on the Unified-Monte-Carlo-B Method 基于统一蒙特卡洛-B 方法评估 48Ti 的中子截面

Chinese Physics C Pub Date : 2024-04-25 DOI: 10.1088/1674-1137/ad432c

Houqiong Xia, Ruirui Xu, Ping Liu, Roberto Capote, Yuan Tian, Xi Tao, Xiao-fei Wu, Yue Zhang, Zhigang Ge, Nengchuan Shu, Song Feng

{"title":"Evaluation of Neutron Cross Sections of 48Ti based on the Unified-Monte-Carlo-B Method","authors":"Houqiong Xia, Ruirui Xu, Ping Liu, Roberto Capote, Yuan Tian, Xi Tao, Xiao-fei Wu, Yue Zhang, Zhigang Ge, Nengchuan Shu, Song Feng","doi":"10.1088/1674-1137/ad432c","DOIUrl":"https://doi.org/10.1088/1674-1137/ad432c","url":null,"abstract":"\u0000 A cross section evaluation of neutron induced reactions on 48Ti is undertaken using the Unified Monte Carlo-B (UMC-B) approach. The evaluation focus on estimating the covarainces and the use of the UMC-B allows avoiding the deficiencies of linear regression brought by the traditional least squares method. Eight main neutron and charged particle emission reactions from n+48Ti in the fast neutron energy region below 20 MeV are studied in this work. The posterior probability density function (PDF) of each neutron cross section is obtained in a UMC-B Bayesian approach by convoluting the model PDFs sampled based on model parameters and the likelihood functions for the experimental data. Nineteen model parameters including level density, pair corrections, optical model and Kalbach matrix element parameter are stochastically sampled with the assumption of normal distributions to estimate the model uncertainty. The Cholesky factorization approach is applied to consider potential parameter correlations. Finally, the posterior covariance matrices are generated using the UMC-B generated weights. The new evaluated results are compared with the CENDL-3.2, ENDF/B-VIII.0, JEFF-3.3, TENDL-2021 and JENDL-5 evaluations and differences are discussed.","PeriodicalId":504778,"journal":{"name":"Chinese Physics C","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140656092","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

Further investigation on the fusion of 6Li with 209Bi target at near-barrier energies 进一步研究 6Li 与 209Bi 靶在近壁垒能量下的聚变问题

Chinese Physics C Pub Date : 2024-04-24 DOI: 10.1088/1674-1137/ad4264

Gaolong 张高龙 Zhang, Zhenwei Jiao, Guangxin Zhang, Mariane Cortes, Shipeng Hu, Jianqiang Qian, D. Mengoni, Weiwei Qu, Congbo Li, Yun Zheng, Huanqiao Zhang, Hui-Bin 孙慧斌 Sun, Nan 王楠 Wang, Chunlei Zhang, Javier Valiente, Dmitry Testov, M. Mazzocco, A. Gozzelino, C. Parascandolo, Dimitra Pierroutsakou@na.infn.it, La lacommara, A. Goasduff, D. Bazzacco, Daniel Napoli, F. Galtarossa, Francesco Recchia, Andres Illana, S. Bakes, Irene Zanon, Sezgin Aydin, Giacomo Deangelis, Marco Siciliano, Roberto Menegazzo, Silvia lenzi, Jonas Ferreira, Jeannie Rangel, S. Akkoyun, Luiz Canto, J. Lubian

{"title":"Further investigation on the fusion of 6Li with 209Bi target at near-barrier energies","authors":"Gaolong 张高龙 Zhang, Zhenwei Jiao, Guangxin Zhang, Mariane Cortes, Shipeng Hu, Jianqiang Qian, D. Mengoni, Weiwei Qu, Congbo Li, Yun Zheng, Huanqiao Zhang, Hui-Bin 孙慧斌 Sun, Nan 王楠 Wang, Chunlei Zhang, Javier Valiente, Dmitry Testov, M. Mazzocco, A. Gozzelino, C. Parascandolo, Dimitra Pierroutsakou@na.infn.it, La lacommara, A. Goasduff, D. Bazzacco, Daniel Napoli, F. Galtarossa, Francesco Recchia, Andres Illana, S. Bakes, Irene Zanon, Sezgin Aydin, Giacomo Deangelis, Marco Siciliano, Roberto Menegazzo, Silvia lenzi, Jonas Ferreira, Jeannie Rangel, S. Akkoyun, Luiz Canto, J. Lubian","doi":"10.1088/1674-1137/ad4264","DOIUrl":"https://doi.org/10.1088/1674-1137/ad4264","url":null,"abstract":"\u0000 The complete and incomplete fusion cross sections for 6Li+209Bi were measured via the in-beam γ-ray method around the Coulomb barrier. The cross sections of (deuteron captured) incomplete fusion (ICF) products were re-quantified experimentally for this reaction system. The results reveal that the ICF cross section is equivalent to that of complete fusion (CF) above the Coulomb barrier and dominant near or below the barrier. A theoretical calculation based on the Continuum Discretized Coupled Channel (CDCC) method is performed for the aforementioned CF and ICF cross sections, and the result is consistent with the experimental ones. The universal fusion function (UFF) is also compared with the measured CF cross section with different barrier parameters, demonstrating that the CF suppression factor is quite sensitive to the choice of potential, which can reflect both dynamic and static effects of breakup on the fusion process.","PeriodicalId":504778,"journal":{"name":"Chinese Physics C","volume":"31 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140664500","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

Systematic investigation of nucleon optical model potentials in (p, d) transfer reactions 对（p, d）转移反应中核子光学模型势的系统研究

Chinese Physics C Pub Date : 2024-04-24 DOI: 10.1088/1674-1137/ad4269

Silu Chen, Zixuan Liu, Zhi Zhang, ruirui xu, D. Pang, Y. Xu

{"title":"Systematic investigation of nucleon optical model potentials in (p, d) transfer reactions","authors":"Silu Chen, Zixuan Liu, Zhi Zhang, ruirui xu, D. Pang, Y. Xu","doi":"10.1088/1674-1137/ad4269","DOIUrl":"https://doi.org/10.1088/1674-1137/ad4269","url":null,"abstract":"\u0000 The consistent three-body model reaction methodology(TBMRM) proposed by J. Lee et al.[1–3], which includes adopting the simple zero-range adiabatic wave approximation, constraining the single-particle potentials using modern Hartree–Fock calculations, and using global nucleon optical model potential(OMP) geometries, are widely applied in systematic studies of transfer reactions. In this work, we study the influences of different nucleon OMPs on extraction of spectroscopic factors(SFs) from (p, d) reactions. Our study covers 32 sets of angular distribution data of (p, d) reactions on 4 targets, as well as a large range of incident energies(20-200 MeV/nucleon). Two semi-microscopic nucleon OMPs, JLM[4, 5] and CTOM[6], and a pure microscopic nucleon potential WLH[7] are used in the present work. The results are compared with those using the phenomenological global optical potential KD02[8]. We find the incident energy dependence of spectroscopic factors extracted from (p, d) reactions is obviously suppressed when microscopic OMPs are employed for 12C, 28Si and 40Ca. In addition, spectroscopic factors extracted using the systematic microscopic optical potential CTOM based on the Dirac-Brueckner-Hartree-Fock theory are more in line with the results obtained from (e, e'p) measurements, except 16O and 40Ca at high energies(> 100 MeV), calling for an exact treatment of double-magic nuclei. The results obtained by using pure microscopic optical potential WLH based on EFT theory shows the same trend but generally higher than CTOM. JLM potential, which relies on simplified nuclear matter calculations with old-fashioned bare interactions, produces very similar results with phenomenological potential KD02. Our results indicate that modern microscopic OMPs are reliable tools for probing the nuclear structure by transfer reactions across a wide energy range.","PeriodicalId":504778,"journal":{"name":"Chinese Physics C","volume":"65 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140664884","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

Next-to-leading order relativistic and QCD corrections to prompt $J/psi$ pair photoproduction at future $e^+e^-$ colliders 在未来的 $e^+e^-$ 对撞机上促使 $J/psi$ 对光生成的次领先阶相对论和 QCD 校正

Chinese Physics C Pub Date : 2024-04-19 DOI: 10.1088/1674-1137/ad408f

Zhi-Guo He

{"title":"Next-to-leading order relativistic and QCD corrections to prompt $J/psi$ pair photoproduction at future $e^+e^-$ colliders","authors":"Zhi-Guo He","doi":"10.1088/1674-1137/ad408f","DOIUrl":"https://doi.org/10.1088/1674-1137/ad408f","url":null,"abstract":"\u0000 Within the framework of nonrelativistic-QCD factorization, we calculate both the next-to-leading-order relativistic and QCD corrections to prompt $J/psi$ pair production, with feeddown from $psi(2S)$ mesons, via photon-photon collisions at future $e^+e^-$ colliders including the Future Circular Lepton Collider (FCC-ee), the Circular Electron Positron Collider (CEPC), and the Compact Linear Collider (CLIC). We present total cross sections and distributions in single $J/psi$ transverse momentum and rapidity, and in $J/psi$ pair invariant mass. The relativistic and QCD corrections both turn out to be large and negative. Yet, the production rates are large enough for useful experimental studies. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Article funded by SCOAP3 and published under licence by Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Science and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd.","PeriodicalId":504778,"journal":{"name":"Chinese Physics C","volume":" April","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140682516","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