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中国物理C（英文版）
中国物理C（英文版）

郑志鹏

月刊

1674-1137

hepnp@mail.ihep.ac.cn

010-88235947

100049

北京市玉泉路19号（乙）中国科学院高能物理研究所内 北京918信箱

中国物理C（英文版）/Journal Chinese Physics　CCSCDCSTPCD北大核心SCI
正式出版
收录年代

    Robustness of N=152 and Z=108 shell closures in superheavy mass region

    陈布雨董建敏王亚乾吴国庆...
    1-6页
    查看更多>>摘要：The neutron shell gap at N=152 has been experimentally confirmed through high-precision mass meas-urements on nobelium(Z=102)and lawrencium(Z=103)isotopes.The experimental measurements on α-decay properties suggest that deformed doubly-magic nature of 270Hs.However,the magic gaps in the superheavy region are generally expected to be fragile.In this study,we test the robustness of N=152 shell closure in N=152 iso-tones and Z=108 shell closure in Hs isotopes by employing an alternative approach where both theoretical analysis and available experimental data are required.Combined with existing experimental measurements on α-decay ener-gies,it is determined that robust N=152 neutron shell persists at least in Z=101-105 isotopes,and robust Z=108 proton shell persists in Hs isotopes with N=159,160.Additionally,the relativistic mean-field model is de-termined as unable to provide N=152 shell.Thus,the conclusion that robust N=152 shell exists at least in Z=101-105 isotopes,provides crucial benchmarks for constraining effective interactions suitable for superheavy nuclei in nuclear energy-density functional theory in future.
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    Measurement of the integrated luminosity of data samples collected during 2019-2022 by the Belle Ⅱ experiment

    I.AdachiL.AggarwalH.AhmedJ.K.Ahn...
    7-18页
    查看更多>>摘要：A series of data samples was collected with the Belle Ⅱ detector at the SuperKEKB collider from March 2019 to June 2022.We determine the integrated luminosities of these data samples using three distinct methodolo-gies involving Bhabha(e+e-→ e+e-(nγ)),digamma(e+e-→ γγ(nγ)),and dimuon(e+e-→ μ+μ-(nγ))events.The total integrated luminosity obtained with Bhabha,digamma,and dimuon events is(426.88±0.03±2.61)fb-1,(429.28±0.03±2.62)fb-1,and(423.99±0.04±3.83)fb-1,where the first uncertainties are statistical and the second are systematic.The resulting total integrated luminosity obtained from the combination of the three methods is(427.87±2.01)fb-1.
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    Polarization study of P-wave charmonium radiative decay into a light vector meson at e+e-collider experiment

    陈永清洪鹏程陈琢单葳...
    19-34页
    查看更多>>摘要：In this paper,a formalism is presented for the helicity amplitude analysis of the decays Ψ(2S)→γ1x cJ,x cJ→γ2 V(V=ρ0,ø,ω)(subscripts 1 and 2 are used to distinguish the two radiative photons),and the po-larization expressions of the P-wave charmonia x cJ and the vector mesons ρ0,ø,ω for experimental measurements at an electron-positron collider.In addition,we derive formulae for the angular distributions of x c1,2 →γ V to extract the degree of transverse polarization P T of e+e-pairs with symmetric beam energy as well as the ratios of two heli-city amplitudes x(in x c1 decays)and x,y(in x c2 decays),which represent the relative magnitudes of transverse to longitudinal polarization amplitude.The results are validated by Monte Carlo simulation.Finally,the statistical sens-itivity of P T,x,and y are estimated based on the large Ψ(2S)data samples collected at current and proposed future e+e-collider experiments.
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    Prediction of energy resolution in the JUNO experiment

    Angel AbuslemeThomas AdamKai AdamowiczShakeel Ahmad...
    35-59页
    查看更多>>摘要：This paper presents an energy resolution study of the JUNO experiment,incorporating the latest know-ledge acquired during the detector construction phase.The determination of neutrino mass ordering in JUNO re-quires an exceptional energy resolution better than 3％at 1 MeV.To achieve this ambitious goal,significant efforts have been undertaken in the design and production of the key components of the JUNO detector.Various factors af-fecting the detection of inverse beta decay signals have an impact on the energy resolution,extending beyond the statistical fluctuations of the detected number of photons,such as the properties of the liquid scintillator,perform-ance of photomultiplier tubes,and the energy reconstruction algorithm.To account for these effects,a full JUNO simulation and reconstruction approach is employed.This enables the modeling of all relevant effects and the evalu-ation of associated inputs to accurately estimate the energy resolution.The results of this study reveal an energy res-olution of 2.95％at 1 MeV.Furthermore,this study assesses the contribution of major effects to the overall energy resolution budget.This analysis serves as a reference for interpreting future measurements of energy resolution dur-ing JUNO data collection.Moreover,it provides a guideline for comprehending the energy resolution characteristics of liquid scintillator-based detectors.
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    Dynamical study of T ss systems using the chiral quark model

    纪家正邢玉恒吴新星徐宁...
    60-69页
    查看更多>>摘要：Since the discovery of T cc by LHCb,there has been considerable interest in T cc and its heavy-flavor part-ners.However,the study of its strange partner T ss has been largely overlooked.Within the framework of the chiral quark model,we conducted a systematic study of the bound states of T ss based on the Gaussian Expansion Method.We considered all physical channels with 01+,including molecular and diquark structures.Moreover,by considering the coupling between diquarks and molecular states,our calculations allowed us to identify a deep bound state with a bounding energy of 60 MeV primarily composed of KK*.Using the 3P0 model,we calculated the decay width of K*within the KK*bound state,which is approximated as the decay width of the bound state in the T ss.system.These res-ults indicate that,owing to the effect of binding energy,the decay width of K*in KK*is approximately 3 MeV smal-ler than that of K*in vacuum.Additionally,resonance state calculations were performed.We used the real-scaling method to search for possible resonance states in the T ss sysytem.Because of the strong attraction in the[K*]8[K*]8 configuration,four resonance states were found in the vicinity of 2.2-2.8 GeV,predominantly featuring hidden-col-or structures.The decay widths of these states are less than 10 MeV.We strongly recommend experimental efforts to search for the resonance states in the T ss.system predicted by our calculations.
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    Study of charmonium(-like)mesons under a diabatic approach

    张子钊李荣刘伯超
    70-79页
    查看更多>>摘要：In this work,we study the charmonium(-like)spectrum below 4.1 GeV using the diabatic approach,which offers a unified description of conventional and unconventional heavy meson states.Compared to previous studies,we consider a more realistic cc potential by including the spin-dependent interactions,which allows us to obtain more states and insights into the charmonium spectrum.Based on our calculation,we obtain the masses of the charmonium spectrum,which align well with experimental data.We also present the probabilities of finding various components,i.e.,c(ĉ)or meson-meson pairs,in these states.Our results support the arguments that x c1(3872),Ψ(4040),and Xc2(3930)have significant molecular components.In addition,our calculations show that x c0(3860)and Ψ(3770)can be considered as candidates for the charmonium states x c0(2P)and Ψ(1D),respectively.
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    Next-to-next-to-leading order QCD ? EW corrections to Z-boson pair production at electron-positron colliders

    黎哲张仁友李书香王晓峰...
    80-94页
    查看更多>>摘要：We present a comprehensive analytic calculation of the next-to-next-to-leading order QCD⊗ EW correc-tions to Z-boson pair production at electron-positron colliders.The two-loop master integrals essential to this calcu-lation are evaluated using the differential equation method.In this paper,we detail the formulation and solution of the canonical differential equations for the two-loop three-point master integrals with two on-shell Z-boson external legs and a massive internal quark in the loops.These canonical master integrals are systematically expanded as a Taylor series in the dimensional regulator,ε=(4-d)/2,up to the order of ε4,with coefficients expressed in terms of Goncharov polylogarithms up to weight four.Upon applying our analytic expressions of these master integrals to the phenomenological analysis of Z-pair production,we observe that the O(ααs)corrections manifest at a level of approximately one percent when compared to the leading-order predictions,underscoring their significance for com-parisons with future high-precision experimental data.
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    Holographic bottom-up approach to ∑ baryons

    郭溪Miguel Angel Martin Contreras陈勋向东...
    95-104页
    查看更多>>摘要：In this study,we discuss the description of neutral Σ baryons with I(J P)=1(1/2+)and I(J P)=1(3/2+)using two bottom-up approaches:the deformed background and static dilaton models.In both models,we consider a non-linear Regge trajectory extension motivated by the strange nature of Σ baryons.We find that both models de-scribe these systems with an RMS error smaller than 10％.We also perform a configurational entropy calculation in both models to discuss hadronic stability.
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    Two-zero textures for Dirac neutrinos

    Yessica LenisR.Martinez-RamirezEduardo PeinadoWilliam A.Ponce...
    105-113页
    查看更多>>摘要：We review the two-zero mass matrix textures approach for Dirac neutrinos with the most recent global fit in the oscillation parameters.We found that three of the 15 possible textures are compatible with current experimental data,while the remaining two-zero textures were ruled out.Two textures are consistent with the normal hierarchy of neutrino masses and are CP-conserving,while the other is compatible with both mass orderings and allows for CP viol-ation.We also present the correlations between the oscillation parameters for the allowed two-zero textures.
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    Supersymmetric hybrid inflation in light of CMB experiments and swampland conjectures

    Waqas AhmedShabbar Raza
    114-126页
    查看更多>>摘要：In this study,we revisit supersymmetric(SUSY)hybrid inflation within the context of considering the latest Cosmic Microwave Background(CMB)observations and swampland conjectures.We demonstrate that SUSY hybrid inflation remains consistent with Planck 2018 data when radiative,soft mass,and supergravity(SUGRA)cor-rections are applied to the scalar potential.It is commonly perceived that SUSY hybrid inflation with a minimal Kahler potential results in a gauge symmetry breaking scale M of O(10 15)GeV,leading to issues with the proton de-cay rate.In our analysis,we introduce a novel parameter space that alleviates the proton decay issue by achieving M～10 16 GeV with M2S＜0 and am3/2＞0.This scenario necessitates a soft SUSY breaking scale|M S|(＞)10 6 GeV.Further,we find that the tensor-to-scalar ratio r spans from 10-16 to 10-6,indicating a very small value.This small ratio allows the modified swampland criteria to hold,although satisfying the trans-Planckian censorship conjecture(TCC)remains challenging.To address this,we also explo non-minimal Kähler potentials.By fixing the spectral in-dex at n S=0.9665,consistent with the central value of Planck 2018 data,and setting M=2 x 1016 GeV,we present our calculations.We show that the canonical measure of primordial gravitational waves,r,for M S=1 TeV,m3/2=1 TeV,and κ S＜0 for N=1 and N=2,ranges from 10-5 to 0.01,rendering it detectable by Planck and upcoming experiments such as LiteBIRD,Simons Observatory,PRISM,PIXIE,CORE,CMB-S4,and CMB-HD.Additionally,we outline the parametric space and provide benchmark points for the non-minimal case to ensure compatibility with both the modified swampland conjecture and TCC.
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