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The third family quark mass hierarchy and FCNC in the universal seesaw model 宇宙跷跷板模型中的第三族夸克质量等级和 FCNC
IF 3.5 4区 物理与天体物理
Progress of Theoretical and Experimental Physics Pub Date : 2024-08-13 DOI: 10.1093/ptep/ptae127
Takuya Morozumi, Albertus Hariwangsa Panuluh
{"title":"The third family quark mass hierarchy and FCNC in the universal seesaw model","authors":"Takuya Morozumi, Albertus Hariwangsa Panuluh","doi":"10.1093/ptep/ptae127","DOIUrl":"https://doi.org/10.1093/ptep/ptae127","url":null,"abstract":"We present the study of the quark sector of the universal seesaw model with $mathrm{SU(2)_L times SU(2)_R times U(1)_{Y^{prime }}}$ gauge symmetry in the massless case of the two lightest quark families. This model aims to explain the mass hierarchy of the third family quark by introducing a vector-like quark (VLQ) partner for each quark. In this model, we introduce SU(2)L and SU(2)R Higgs doublets. We derive explicitly the Lagrangian for the quark sector, Higgs sector, and kinetic terms of the gauge fields, starting from the Lagrangian, which is invariant under $mathrm{SU(2)_L times SU(2)_R times U(1)_{Y^{prime }}}$ gauge symmetry. At each stage of the symmetry breaking, we present the Lagrangian with the remaining gauge symmetry. Additionally, we investigate the flavor-changing neutral currents (FCNCs) of Higgs (h) and Z-boson in the interaction with the top, heavy top, bottom, and heavy bottom quarks.","PeriodicalId":20710,"journal":{"name":"Progress of Theoretical and Experimental Physics","volume":"7 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Performance of the Fully-equipped Spin Flip Chopper For Neutron Lifetime Experiment at J-PARC 用于 J-PARC 中子寿命实验的全装备自旋翻转斩波器的性能
IF 3.5 4区 物理与天体物理
Progress of Theoretical and Experimental Physics Pub Date : 2024-08-10 DOI: 10.1093/ptep/ptae123
K Mishima, G Ichikawa, Y Fuwa, T Hasegawa, M Hino, R Hosokawa, T Ino, Y Iwashita, M Kitaguchi, S Matsuzaki, T Mogi, H Okabe, T Oku, T Okudaira, Y Seki, H E Shimizu, H M Shimizu, S Takahashi, M Tanida, S Yamashita, M Yokohashi, T Yoshioka
{"title":"Performance of the Fully-equipped Spin Flip Chopper For Neutron Lifetime Experiment at J-PARC","authors":"K Mishima, G Ichikawa, Y Fuwa, T Hasegawa, M Hino, R Hosokawa, T Ino, Y Iwashita, M Kitaguchi, S Matsuzaki, T Mogi, H Okabe, T Oku, T Okudaira, Y Seki, H E Shimizu, H M Shimizu, S Takahashi, M Tanida, S Yamashita, M Yokohashi, T Yoshioka","doi":"10.1093/ptep/ptae123","DOIUrl":"https://doi.org/10.1093/ptep/ptae123","url":null,"abstract":"To solve the “neutron lifetime puzzle,” where measured neutron lifetimes differ depending on the measurement methods, an experiment with pulsed neutron beam at J-PARC is in progress. In this experiment, neutrons are bunched into 40-cm lengths using a spin flip chopper (SFC), where the statistical sensitivity was limited by the aperture size of the SFC. The SFC comprises three sets of magnetic supermirrors and two resonant spin flippers. In this paper, we discuss an upgrade to enlarge the apertures of the SFC. With this upgrade, the statistics per unit time of the neutron lifetime experiment increased by a factor of 2.8, while maintaining a signal-to-noise ratio of 250–400 comparable to the previous one. Consequently, the time required to reach a precision of 1 s in the neutron lifetime experiment was reduced from 590 to 170 days, which is a significant reduction in time. This improvement in statistic will also contribute to the reduction of systematic uncertainties, such as background evaluation, fostering further advancements in the neutron lifetime experiments at J-PARC.","PeriodicalId":20710,"journal":{"name":"Progress of Theoretical and Experimental Physics","volume":"35 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141931988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analytic and Numerical Approaches for Depictive 3-loop Integrals using Sector Decomposition 利用扇形分解描绘三环积分的分析和数值方法
IF 3.5 4区 物理与天体物理
Progress of Theoretical and Experimental Physics Pub Date : 2024-08-08 DOI: 10.1093/ptep/ptae122
Elise de Doncker, Tadashi Ishikawa, Kiyoshi Kato, Fukuko Yuasa
{"title":"Analytic and Numerical Approaches for Depictive 3-loop Integrals using Sector Decomposition","authors":"Elise de Doncker, Tadashi Ishikawa, Kiyoshi Kato, Fukuko Yuasa","doi":"10.1093/ptep/ptae122","DOIUrl":"https://doi.org/10.1093/ptep/ptae122","url":null,"abstract":"Four 3-loop two-point functions are studied analytically and numerically using a simplified sector decomposition method. The coefficients of the ultraviolet divergent part are determined analytically, and those of the finite part are computed numerically. The energy dependence of the integrals is shown explicitly, and a discussion of its behavior is presented.","PeriodicalId":20710,"journal":{"name":"Progress of Theoretical and Experimental Physics","volume":"77 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141931920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Broad-Band X-Ray Analysis of NGC 3227 NGC 3227 的宽波段 X 射线分析
IF 3.5 4区 物理与天体物理
Progress of Theoretical and Experimental Physics Pub Date : 2024-08-08 DOI: 10.1093/ptep/ptae125
Jared Newman, Sachiko Tsuruta, Andrew C Liebmann, Hideyo Kunieda, Yoshito Haba
{"title":"Broad-Band X-Ray Analysis of NGC 3227","authors":"Jared Newman, Sachiko Tsuruta, Andrew C Liebmann, Hideyo Kunieda, Yoshito Haba","doi":"10.1093/ptep/ptae125","DOIUrl":"https://doi.org/10.1093/ptep/ptae125","url":null,"abstract":"Previously in Project (A) we carried out analysis of the data obtained by observations of the 1.5 Seyfert galaxy NGC 3227, the two observations performed by XMM-Newton in 2000 and 2006 and six observations by Suzaku in 2008. In the current paper, Project (B), our work was extended to joint XMM-Newton and NuSTAR observations in 2016 as well as a NuSTAR observation in 2017. In Project A a unified model was constructed. The model consists of a hard power law (ΓHard = 1.4 − 1.7) which is interpreted as the Comptonized emission from the corona above an accretion disk. In the high flux states an additional soft excess component dominates, which is consistent with either a power law (ΓSoft = 3.3 − 3.85) or warm Comptonization. These emissions are absorbed by a partial covering material and warm absorbers. A reflection component and several emission lines are also present. In Project B, the model presented in Project A was applied to more recent observations. It was found that this model remains valid. Our conclusion is that this model is consistent, valid with the long observations from 2000 to 2017 and over the broad frequency band from 0.3 keV to 50 keV.","PeriodicalId":20710,"journal":{"name":"Progress of Theoretical and Experimental Physics","volume":"71 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Kaluza-Klein Schwinger Effect 卡鲁扎-克莱因-施文格效应
IF 3.5 4区 物理与天体物理
Progress of Theoretical and Experimental Physics Pub Date : 2024-08-08 DOI: 10.1093/ptep/ptae124
Yusuke Yamada
{"title":"Kaluza-Klein Schwinger Effect","authors":"Yusuke Yamada","doi":"10.1093/ptep/ptae124","DOIUrl":"https://doi.org/10.1093/ptep/ptae124","url":null,"abstract":"We show that electric fields in compactified spaces may produce Kaluza-Klein (KK) particles even when the energy of electric fields is smaller than KK scale. As an illustrating example, we consider a charged massless complex scalar coupled to U(1) gauge theory in $mathbb {R}^{1,3}times {mathbb {S}}^1$ and discuss the effect of background gauge potential along a compact direction. The electric field produces the charged Kaluza-Klein particle non-perturbatively, which we call KK Schwinger effect. We quantitatively show that KK modes can be produced even when the electric field energy is much below the KK scale. The mechanism is rather general and similar phenomena would occur in any compactification models when a gauge potential along compact direction evolves in time and experiences large enough field excursion. We also discuss the subtlety of four dimensional effective theory truncated by KK modes at an initial time, when the electric field is turned on.","PeriodicalId":20710,"journal":{"name":"Progress of Theoretical and Experimental Physics","volume":"16 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141931989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Distributions of consecutive level spacings of GUE and their ratio: ab initio derivation GUE 的连续级距分布及其比率： Ab initio 推导
IF 3.5 4区 物理与天体物理
Progress of Theoretical and Experimental Physics Pub Date : 2024-08-06 DOI: 10.1093/ptep/ptae120
Shinsuke M Nishigaki
{"title":"Distributions of consecutive level spacings of GUE and their ratio: ab initio derivation","authors":"Shinsuke M Nishigaki","doi":"10.1093/ptep/ptae120","DOIUrl":"https://doi.org/10.1093/ptep/ptae120","url":null,"abstract":"In recent studies of many-body localization in nonintegrable quantum systems, the distribution of the ratio of two consecutive energy level spacings, rn = (En + 1 − En)/(En − En − 1) or $tilde{r}_n=min (r_n,r_n^{-1})$, has been used as a measure to quantify the chaoticity, alternative to the more conventional distribution of the level spacings, $s_n=bar{rho }(E_n)(E_{n+1}-E_n)$, as the former unnecessitates the unfolding required for the latter. Based on our previous work on the Tracy-Widom approach to the Jánossy densities, we present analytic expressions for the joint probability distribution of two consecutive eigenvalue spacings and the distribution of their ratio for the Gaussian unitary ensemble (GUE) of random Hermitian N × N matrices at N → ∞, in terms of a system of differential equations. As a showcase of efficacy of our results for characterizing an approach to quantum chaoticity, we contrast them to arguably the most ideal of all quantum-chaotic spectra: the zeroes of the Riemann ζ function on the critical line at increasing heights.","PeriodicalId":20710,"journal":{"name":"Progress of Theoretical and Experimental Physics","volume":"22 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141931990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An implementation of nuclear many-body wave functions by the superposition of localized Gaussians 通过局部高斯叠加实现核多体波函数
IF 3.5 4区 物理与天体物理
Progress of Theoretical and Experimental Physics Pub Date : 2024-08-01 DOI: 10.1093/ptep/ptae119
Masaaki Kimura, Yasutaka Taniguchi
{"title":"An implementation of nuclear many-body wave functions by the superposition of localized Gaussians","authors":"Masaaki Kimura, Yasutaka Taniguchi","doi":"10.1093/ptep/ptae119","DOIUrl":"https://doi.org/10.1093/ptep/ptae119","url":null,"abstract":"We introduce a new framework for the nuclear structure calculations, which describes the single-particle wave function as a superposition of localized Gaussians. It is a hybrid of the Hartree-Fock and antisymmetrized molecular dynamics models. In the numerical calculations of oxygen, calcium isotopes and 100Sn, the framework shows its potential by significantly improving upon AMD and yielding the results consistent with or even better than Hartree-Fock(-Bogoliubov) calculations based on harmonic oscillator expansions. In addition to the basic equations, general form of the matrix elements are also given.","PeriodicalId":20710,"journal":{"name":"Progress of Theoretical and Experimental Physics","volume":"9 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141881420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Systematic effects on lensing reconstruction from a patchwork of CMB polarization maps 从拼凑的 CMB 偏振图重建透镜的系统效应
IF 3.5 4区 物理与天体物理
Progress of Theoretical and Experimental Physics Pub Date : 2024-08-01 DOI: 10.1093/ptep/ptae117
Ryo Nagata, Toshiya Namikawa
{"title":"Systematic effects on lensing reconstruction from a patchwork of CMB polarization maps","authors":"Ryo Nagata, Toshiya Namikawa","doi":"10.1093/ptep/ptae117","DOIUrl":"https://doi.org/10.1093/ptep/ptae117","url":null,"abstract":"We investigate the tolerance for systematic errors in lensing analysis applied to a patchwork map of Cosmic Microwave Background polarization. We focus on the properties of the individual polarization maps that comprise the patchwork and discuss the associated calibration residuals that are coherent on those subpatches. We numerically simulate the polarization field modulated as a whole patchwork and apply a suite of lensing analyses to reveal the response of the reconstructed gravitational lensing potential and delensing efficiency. At systematic error levels expected in the near future, we find that it is possible to accurately reconstruct the lensing potential on scales larger than the subpatch size and that there is no severe degradation of the lensing B-mode removal efficiency in the subsequent delensing analysis.","PeriodicalId":20710,"journal":{"name":"Progress of Theoretical and Experimental Physics","volume":"44 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141881485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Patchwork Conditions for Holographic Nonlinear Responses: A Computational Method of Electric Conductivity and Friction Coefficient 全息非线性响应的拼凑条件：电导率和摩擦系数的计算方法
IF 3.5 4区 物理与天体物理
Progress of Theoretical and Experimental Physics Pub Date : 2024-07-31 DOI: 10.1093/ptep/ptae118
Shuta Ishigaki, Shin Nakamura, Kazuaki Takasan
{"title":"Patchwork Conditions for Holographic Nonlinear Responses: A Computational Method of Electric Conductivity and Friction Coefficient","authors":"Shuta Ishigaki, Shin Nakamura, Kazuaki Takasan","doi":"10.1093/ptep/ptae118","DOIUrl":"https://doi.org/10.1093/ptep/ptae118","url":null,"abstract":"We propose a new method to compute nonlinear transport coefficients in holography, such as nonlinear DC conductivity and nonlinear friction coefficient. The conventional method can be applied only to the models whose action in the gravity dual has the “square-root structure,” i.e., the Dirac-Born-Infeld action of the probe D-branes or the Nambu-Goto action of the probe strings. Our method is applicable to a wider range of holographic models whose action does not have such a square-root structure. We propose a condition to obtain regular physical configurations in the gravity dual in the form of two simultaneous equations, which we call the patchwork condition. Our method also enables us to estimate the effective temperature of the nonequilibrium steady states in a wider range of holographic models. We show that a general model exhibits different effective temperatures for different fluctuation modes.","PeriodicalId":20710,"journal":{"name":"Progress of Theoretical and Experimental Physics","volume":"26 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141881419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Supersymmetric Expansion Algorithm and Complete Analytical Solution for the Hulthén and Anharmonic Potentials 胡尔特恩势和非谐波势的超对称展开算法和完整解析解
IF 3.5 4区 物理与天体物理
Progress of Theoretical and Experimental Physics Pub Date : 2024-07-30 DOI: 10.1093/ptep/ptae115
M Napsuciale, S Rodríguez, M Kirchbach
{"title":"Supersymmetric Expansion Algorithm and Complete Analytical Solution for the Hulthén and Anharmonic Potentials","authors":"M Napsuciale, S Rodríguez, M Kirchbach","doi":"10.1093/ptep/ptae115","DOIUrl":"https://doi.org/10.1093/ptep/ptae115","url":null,"abstract":"An algorithm for providing analytical solutions to Schrödinger’s equation with non-exactly solvable potentials is elaborated. It represents a symbiosis between the logarithmic expansion method and the techniques of the supersymmetric quantum mechanics as extended toward non shape invariant potentials. The complete solution to a given Hamiltonian H0 is obtained from the nodeless states of the Hamiltonian H0 and of a set of supersymmetric partners H1, H2, …, Hr. The nodeless states (dubbed “edge” states) are unique and in general can be ground or excited states. They are solved using the logarithmic expansion which yields an infinite system of coupled first order hierarchical differential equations, converted later into algebraic equations with recurrence relations which can be solved order by order. We formulate the aforementioned scheme, termed to as “Supersymmetric Expansion Algorithm” step by step and apply it to obtain for the first time the complete analytical solutions of the three dimensional Hulthén–, and the one-dimensional anharmonic oscillator potentials.","PeriodicalId":20710,"journal":{"name":"Progress of Theoretical and Experimental Physics","volume":"171 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141872553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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