Boris Tatischeff
A systematic study of hadronic masses shows regular oscillations that can be fitted by a simple cosine function. This property can be observed when the difference between adjacent masses of each family is plotted versus the mean mass. This symmetry of oscillation is also observed for the nuclear level masses of given spin.
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Superheavy Nuclei in a Chiral Hadronic Model
在非线性手征SU（3）模型中研究了超重核。质子数Z=120，中子数N=172，184和198被预测为幻数。电荷分布和α衰变链暗示了中空结构。
Mini-proceedings of the ECT* Workshop, Hadronic Atoms and Kaonic Nuclei - Solved Puzzles, Open Problems and Future Challenges in Theory and Experiment, 12-16 October 2009
The thermal description of light nuclei at the chemical freeze-out has been investigated. First, I have verified the equilibration of the light nuclei and then introduced a new method to investigate the light nuclei formation. One can study the proximity between the phase space density of light nuclei ratios and their hadronic constituents e.g $\bar{d}/d$ and $(\bar{p}\bar{n}/pn)$. I have found that with the exclusion of the decay feed-down from the hadronic yields in the thermal model, the hadronic representations have good agreement with the light nuclei ratios. I have performed a similar an…
Collective flow observables are known to be a sensitive tool to gain insights on the equation of state of nuclear matter from heavy-ion collision observations. Towards more quantitative constraints one has to carefully assess other influences on the collective behaviour. In this work a hadronic transport approach SMASH (Simulating Many Accelerated Strongly-interacting Hadrons) is applied to study the first four anisotropic flow coefficients in Au+Au collisions at $E_{\rm lab}=1.23A$ GeV in the context of the recently measured data by the HADES collaboration. In particular, the formation of lig…
On Distribution Functions for Partons in Nuclei
我们认为，以前的结构函数（SF）的核和核子之间的关系，也链接在一个核和核子中的部分子的分布函数（DF）。上述建议原则上保证了SF $F_2^A$的相同结果，无论是用强子自由度还是用部分子自由度计算。在实践中，由于不同的$F_2^n$输入，存在差异。我们表明，这样定义的核部分子分布函数（pdf）尊重标准的sumrules。此外，我们数值比较核SF的一些时刻，并找到结果之间的协议，使用强子和部分子的描述。我们目前的EMC比的计算，并与强子预测和数据进行比较。尽管参与的SF存在实质性差异，但两种表示法产生的EMC比率大致相同。上述偏差之间的明显相关性归因于$F_2^A$的求和规则。最后，我们讨论了核pdf的替代方法。
We investigate the freeze-out conditions of a particle in an expanding system of interacting particles in order to understand the productions of resonances, hadronic molecules and light nuclei in heavy ion collisions. Applying the kinetic freeze-out condition with explicit hydrodynamic calculations for the expanding hadronic phase to the daughter particles of $K^*$ mesons, we find that the larger suppression of the yield ratio of $K^*/K$ at LHC than at RHIC compared to the expectations from the statistical hadronization model based on chemical freeze-out parameters reflects the lower kinetic f…
Deformed Nuclei in a Chiral Model
本文用强子手征SU_f（3）模型方法研究了原子核的形变性质。参数拟合强子质量属性和调整球形有限核已执行。利用这些参数，在二维自洽计算中得到了一系列轻核和重核的形变。此外，我们还讨论了一个重核超形变的例子。
We explore the intensity correlations for thermal photons having $K_T\leq$ 2 GeV/$c$, for central collisions of heavy nuclei at RHIC and LHC energies. These photons get competing contributions from the quark and the hadronic phases. This competition gives rise to a unique structure, especially in the outward correlation function, due to the interference between the photons from the two sources. The temporal separation of the two sources provides the life time of the system and their strengths provide the relative contribution of the two phases. The results are found to be quite sensitive to th…
Collective monopole vibrations are studied in the framework of an antisymmetrized version of molecular dynamics as a function of the vibration amplitude. The giant monopole resonance energy in ${}^{40}Ca$ is sensitive to the incompressibility of the effective interaction, in good agreement with complete time-dependent Hartree-Fock calculations. The collective response of ${}^{12}C$, ${}^{16}O$ and ${}^{24}Mg$ is also studied. For these lighter nuclei that have an important contribution of an $α$-clustered component, different frequencies are observed, corresponding to two different types of vi…
Quadrupole Oscillations as Paradigm of the Chaotic Motion in Nuclei. Part 2
本次沟通是审查的延续，审查的第一部分已在nucl-th/0109033中介绍。第二部分讨论混沌动力学在量子水平上的表现。详细研究了R-C-R跃迁过程中能谱统计性质的变化。证明了经典运动的类型与R-C-R跃迁高激发态的本征函数结构有关。分析了不可积摄动增加引起的壳体结构破坏。
In this article, we transform the previously-derived microscopic rotational-model Schrodinger equation into a form suitable for describing oscillations-coupled-to-intrinsic motion in spherical nuclei. The resulting equation is decomposed into two coupled cranking-type equations, one for the oscillation and another for the intrinsic motion, using a product wavefunction and a constrained variational method. The energy and cranking parameters in the coupled equations are self-consistently determined as functions of the system parameters by the solutions of the equations themselves. This self-cons…
Hadronic cross-section fluctuations and proton coherent diffractive dissociation on helium
用$P_N(σ)$的截面分布的相对累积量表示了$p~+~^4$ He $\rightarrow X ~+ ~^4$ He非弹性相干衍射解离的微分截面。比率$r=\Bigg(\frac{dσ_{diff}}{dt}\Bigg)^{pHe}_{t=0} \Bigg/ \Bigg(\frac{dσ_{diff}}{dt}\Bigg)^{pp}_{t=0}=6.8 ÷7.6$的理论结果接近于我们从FNAL数据中提取的值$r=7.1 \pm 0.75$。这些是此类唯一的$A>2$数据。比较提供了第一个确认的截面波动的方法来描述的绝对值的非弹性衍射截面了核。它也提供了一个新的约束的前4个累积量的截面分布。
We study radial oscillations in non-rotating neutron stars by considering the unified equation of states (EoSs), which support the 2 M$_\odot$ star criterion. We solve the Sturm-Liouville problem to compute 20 lowest radial oscillation modes and their eigenfunctions for neutron star modelled with eight selected unified EoSs from distinct Skyrme-Hartree Fock, Relativistic Mean-Field and quarkyonic models. We compare the behavior of the computed eigenfrequency for NS modelled with hadronic to that with quarkyonic EoSs while varying central densities. The lowest order, f-mode frequency varies sub…
The centrality dependence of the $p/π$ ratio measured by the ALICE Collaboration in 5.02 TeV Pb-Pb collisions indicates a statistically significant suppression with the increase of the charged particle multiplicity once the centrality-correlated part of the systematic uncertainty is eliminated from the data. We argue that this behavior can be attributed to baryon annihilation in the hadronic phase. By implementing the $B\bar{B} \leftrightarrow 5π$ reaction within a generalized partial chemical equilibrium framework, we estimate the annihilation freeze-out temperature at different centralities,…
Neutron--Antineutron Oscillations at the Surface of Nuclei
本文讨论了原子核中可能的中子-反中子振荡的某些方面。这种现象主要发生在原子核的表面，因此{ \sl i）}对介质修正不太敏感，{ \sl ii）}利用了欧洲核子研究中心实验探测的区域中的反核子-原子核相互作用。
We briefly outline the present state of the $n\bar{n}$ transition problem and analyse the recent manuscript of the Vladimir Kopeliovich (arXiv: 0912.5065).
We briefly outline the models of the $n\bar{n}$ transition in nuclei and analyse a well known calculation based on diagram technique published in 1992 and repeated recently by V. Kopeliovich and I. Potashnikova.
Recent high energy CERN LHC experiments on transverse momenta distributions of produced particles seem to show the existence of some (small but persistent) log-periodic oscillation in the ratios $R = σ_{data}\left( p_T\right)/σ_{fit}\left( p_T\right)$. We argue that they can provide us with so far unnoticed information on the production process, which can be interpreted as the presence of some kind of sound waves formed during the collision process in the bulk of the produced high density matter.
Modified Zimanyi-Moszkowski Model for Finite Nuclei
通过将Walecka模型中的介子质量标度为介质中强子有效质量的倒数，我们得到了加入表面项的Zimanyi-Moszkowski（ZM）模型。对于无限大的核物质，表面项消失，新模型等价于通常的ZM模型。对于有限核计算，表面贡献改变了自旋轨道分裂在正确的实验方向。一些核的计算。
SUPPRESSION OF THE NEUTRON-ANTINEUTRON OSCILLATION IN NUCLEI
本文在光势模型下，用场论S矩阵方法分析了由中子-反中子振荡引起的核衰变问题。在场论S-矩阵方法中重新推导了光学势模型的结果。原子核中的中子-反中子振荡被大大抑制.我们讨论了一个例子的自旋旋进的原子中，类似的抑制发生由于透明的物理原因。
Collective Dipole Oscillations in Atomic Nuclei and Small Metal Particles
(The本文研究了原子核和小金属粒子中光子吸收截面随费米子组成数$A$的变化规律。本文指出，早先在$A > 63$中发现的与壳层结构有关的光中子截面半高宽振荡，实际上一直持续到最轻的核。对振荡求平均值或聚焦于振荡曲线的下包络线（幻核），可以看到FWHM通常随着$A$的增加而减小，这与$A^{-1/3}$一致，这是一种早先已知在金属粒子系统中保持的依赖性。如果FWHM由各自的费米能量和费米波矢量的半径的倒数缩放，两个数据集变得在幅度上相当。一个示意性的系统学理论描述。）
The shear modulus of neutron star matter is one of the important properties for determining torsional oscillations in neutron stars. We take into account the effects of finite sizes of spherical nuclei on the shear modulus and examine the frequencies of crustal torsional oscillations. The shear modulus decreases owing to the finite-size effect, which in turn decreases the frequencies of torsional oscillations. In particular, the finite-size effect becomes more crucial for oscillations with a larger azimuthal quantum number and for neutron star models with a weaker density dependence of nuclear…
Compositeness of hadrons, nuclei, and atomic systems
本文总结强子复合性概念，用于定量表征强子分子成分，并回顾其在强子、原子核及原子系统等不同能量尺度量子系统中的应用。
We demonstrate that so called "infrared divergences" which have been discussed in some publications during several years, do not appear within the correct treatment of analytical properties of the transition amplitudes, in particular, of the second order pole structure of the amplitudes describing the $n - \bar n$ transition in nuclei. Explicit calculation with the help of the Feynman diagram technique shows that the neutron-antineutron oscillations are strongly suppressed in the deuteron, as well as in heavier nuclei, in comparison with the oscillations in vacuum. General advantages and some …
Structure of Stars and Nuclei
讨论了致密强子物质和夸克物质的性质及其与致密星的关系。在自下而上的方法中，人们从低密度的核和超核物理开始，并将强子物质外推到大密度。夸克物质相的匹配是在一个自上而下的方法开始在渐近大密度。紧凑型恒星的质量半径关系和存在一个新的家庭的解决方案的影响将被概述。
Neutron-Antineutron Oscillations in Nuclei Revisited
$n-\bar n$振荡的上限可以从物质的稳定性得到。从理论上推导出了这个关系式，并结合数据得出了$τ_{n\bar n} > (1 - 2)\times 10^8 sec$ .最近的一个出版物声称一个不同的关系，并发现了一个核抑制的$n\to\bar n$振荡，这是两个数量级弱于以前的评估。使用同样的方法，我们发现，然而，早期的估计是正确的，并得出结论，未来的实验与反应堆的自由中子能够把一个更强的限制的$n - \bar n$振荡时间比实验与大量的中子束缚在核中。
Hadrons in Nuclei
理论预言的致密核物质中强子性质的变化，通常用相对论重离子反应来研究。在这次演讲中，我表明，这种变化的可观察到的后果也可以看到在更多的基本反应的核。特别强调的是放在讨论的光核反应，例子是双轻子生产在$\approx 1$ GeV和强子生产的核在10 - 20 GeV的光子能量。可观测到的效应预计与相对论性重离子碰撞一样大，并且可能与潜在的强子变化更直接相关。
Nonlinear dynamics of giant resonances in atomic nuclei
在含时相对论平均场模型下，分析了核中巨共振的动力学。从表征质子和中子密度分布的动力学变量的时间序列中重建了等密度和等矢量集体振荡的相空间。由此产生的递归图和相关维度的分析表明，定期运动的isoscillator模式，和混沌动力学的isovector振荡。信息论泛函识别和量化量子系统中的巨共振的非线性动力学，具有空间和时间结构。
The interference of the $ρ^0$ and $ω$ mesons has been studied in the hadronic and leptonic decay channels, i.e., dipion and dilepton decay channels respectively, but this interference is not studied yet in the semihadronic or semileptonic decay channel, e.g., $V \to π^0γ$. $V$ denotes either $ρ^0$ or $ω$ meson. To look for the quoted interference in the $π^0γ$ decay channel as well as the contribution of $ρ$ meson to the cross section, the correlated $π^0γ$ invariant mass distribution spectra are calculated in the photonuclear reaction in the multi-GeV region. It is assumed that these bosons a…
Quadrupole Oscillations as Paradigm of the Chaotic Motion in Nuclei. Part 1
我们已经提出了一个完整的描述所产生的哈密顿量的四极核振荡的经典动力学，并确定了量子动力学的特点，可以解释为经典随机性的量子表现。特别注意研究了具有局部极小值的势能面中的经典动力学。本文提出了一种确定系统向混沌转变的临界能量的新方法。它比与一个或另一个版本的重叠共振判据相联系的向混沌过渡的判据简单。我们用数值方法证明，对于具有局部不稳定区的势，在高能时运动又变为规则的，即发生规则-混沌-规则{R-C- R}的转变。详细研究了{R-C- R}跃迁过程中能谱统计性质的变化。证明了经典运动的类型与（R-C- R）跃迁高激发态本征函数的结构有关。分析了不可积摄动增加引起的壳体结构破坏。
Limits on the neutron-antineutron oscillation time from the stability of nuclei
我们驳斥了Nazaruk最近的一项主张，即对自由空间中子反中子振荡时间$τ_{n\bar n}$的限制相对于估计值$τ_{n\bar n}>2(T_0/Γ)^{1/2}$可以提高许多数量级，其中$T_0$是一个测量到的核湮灭寿命的限制，$Γ\sim 100$ MeV是一个典型的反中子核湮灭宽度。
Cross Section Oscillations in the Coherent Charmonium Photoproduction off Nuclei at Moderate Energies
我们计算的相干粲偶素光生在中等能量占粲偶素束缚态的物理和截面上的颜色使用相应调整的广义矢量优势模型（GVDM）的区域的依赖性。在光子能量域中的相干长度是可比的平均核子间的距离在核和核半径，我们发现，由纵向核形状因子的总和向前的光生截面的显着振荡强烈修改占非对角跃迁的色屏蔽现象的charmonium再散射。我们讨论了这些振荡是如何影响SLAC E160低能J/psi和psi'离核光生实验中真实粲偶素-核子截面的测定的。
Hadrons in Nuclei
理论预言的致密核物质中强子性质的变化，通常用相对论重离子反应来研究。在这次演讲中，我表明，这种变化的可观察到的后果也可以看到在更多的基本反应的核。特别强调的是放在讨论的光核反应，例如双轻子生产在$\approx 1$ GeV和强子生产的核在10 - 20 GeV的虚光子能量。可观测到的效应预计与相对论性重离子碰撞一样大，并且可能与潜在的强子变化更直接相关。
Coupling of Dipole Mode to gamma-unstable Quadrupole Oscillations
本文研究了形变γ不稳定核中高激发态偶极模与低激发态四极模的耦合。从几何模型的结果进行了比较，在偶极玻色子模型。在两种模型中得到一致的结果。偶极玻色子模型被处理内禀框架内，与随后的投影到实验室框架。作为应用，计算了γ不稳定核的光核反应截面。
Parity shift and beat staggering structure of octupole bands in a collective model for quadrupole-octupole deformed nuclei
我们提出了一个集体模型形式，它描述了在具有八极形变的原子核的低能谱中观察到的强宇称位移以及在较高角动量下发展的精细转动能带结构。宇称效应是由薛定谔方程得到的反射非对称（八极）形状的振荡之间的两个相反的方向在一个角动量相关的双势阱势。转动结构由集体四极-八极转动哈密顿量得到。模型方案再现了在轻锕系核八极带中观察到的复杂拍频交错花样。它解释了八极谱的角动量演化为八极形状振荡（宇称位移）模式和稳定的四极-八极旋转模式之间的相互作用。
Hyperonic crystallization in hadronic matter
发表于Hadrons，Nuclei and Applications，World Scientific，Singapore，Proc.of the Conference Bologna 2000。世纪之初的原子核结构。Bonsignori，M. Bruno，A.文图拉湾Vretenar Editors，pag. 319.
The origin of weakly-bound nuclear clusters in hadronic collisions is a key question to be addressed by heavy-ion collision (HIC) experiments. The measured yields of clusters are approximately consistent with expectations from phenomenological statistical hadronisation models (SHMs), but a theoretical understanding of the dynamics of cluster formation prior to kinetic freeze out is lacking. The competing model is nuclear coalescence, which attributes cluster formation to the effect of final state interactions (FSI) during the propagation of the nuclei from kinetic freeze out to the observer. T…
Hadronic parity violation: successes, challenges, and future prospects
本文综述强子宇称违反的研究进展，探讨其在核系统中的应用，并展望未来在标准模型计算和超越标准模型的动力学研究中的潜力。
A systematic study of hadron masses and widths shows regular oscillations that can be fitted by a simple cosine function. This property can be observed when the difference between adjacent masses of each family is plotted versus the mean mass.
We calculate for the first time the electric dipole moment (EDM) of the deuteron, $^3$H, and $^3$He nuclei generated by the one-meson exchange CP-odd nuclear force in the standard model. The effective $|ΔS| = 1$ four-quark operators are matched to the $|ΔS| = 1$ standard model processes involving the CP phase of the Cabibbo-Kobayashi-Maskawa matrix at the electroweak scale and run down to the hadronic scale $μ= 1$ GeV according to the renormalization group evolution in the next-to-leading logarithmic order. At the hadronic scale, the hadron matrix elements are modeled in the factorization appr…
In high energy nuclear collisions, production rates of light nuclei agree with the predictions of an ideal gas at a temperature $T=155 \pm 10$ MeV. In an equilibrium hadronic medium of this temperature, light nuclei cannot survive. In this contribution, we suggest that the observed behavior is due to an evolution in global non-equilibrium, leading to self-organized criticality and to hadron formation as an absorbing state phase transition for color degrees of freedom. At the confinement point, the initial quark-gluon medium becomes quenched by the vacuum, breaking up into all allowed free hadr…
The $α$ cluster states are discussed in a model frame of extended quantum molecular dynamics. Different alpha cluster structures are studied in details, such as $^8$Be two-$α$ cluster structure, $^{12}$C triangle structure, $^{12}$C chain structure, $^{16}$O chain structure, $^{16}$O kite structure, and $^{16}$O square structure. The properties studied, include as the width of wave packets for different $α$ clusters, momentum distribution, and the binding energy among $α$ clusters. It is also discussed how the $α$ cluster degree of freedom affects nuclear collective vibrations. The cluster con…
Using a transport model that includes a first-order chiral phase transition between the partonic and the hadronic matter, we study the development of density fluctuations in the matter produced in heavy ion collisions as it undergoes the phase transition, and their time evolution in later hadronic stage of the collisions. Using the coalescence model to describe the production of deuterons and tritons from nucleons at the kinetic freeze out, we find that the yield ratio $ N_\text{t}N_\text{p}/ N_\text{d}^2$, where $N_\text{p}$, $N_\text{d}$, and $N_\text{t}$ are, respectively, the proton, deute…
Exclusive Hadronic Reactions at High $Q^2$
用短程QCD夸克交换过程成功地解释了大角度排斥强子反应的标度律。我们专注于三个强子反应，这表明从预期的标度行为轻微的振荡偏差的证据。对这些振荡的可能解释以及与自旋观测值的联系将被提及。来自现有设施（或未来可能的KEK质子加速器，JHP）的更好的数据可以澄清理论情况。
We present evidence for small oscillations we observe in electron-positron and proton-antiproton annihilation data, with a periodicity of 76+-2 MeV, independent of the beam energy. We discuss some possible scenarios to explain the phenomenon.
Based on an improved multiphase transport (AMPT) model, which gives a good description of proton production with a smooth quark matter to hadronic matter transition in relativistic heavy ion collisions, we study deuteron and triton production from the coalescence of nucleons at the kinetic freezeout of these collisions. For Au+Au collisions at center-of-mass energies $\sqrt{s_\text{NN}}$ from 7.7 GeV to 200 GeV available at the Relativistic Heavy Ion Collider (RHIC), we find that the yield ratio $N_\text{t}N_\text{p}/N_\text{d}^2$ of proton, deuteron\com{,} and triton is essentially a constant…
Evolution of the EMC Effect in Light Nuclei
EMC效应作为原子质量$A$的函数的演化被认为是第一次为最轻的核，D，$^3H$，$^3He$和$^4He$，与基于Bethe-Salpeter形式主义的方法。我们表明，模式的比值$r^A(x) = F_2^A/F_2^N(D)$的振荡与$A$的变化，不像模式的质量$A > 4$，只有振幅的振荡变化的核。
Impact of dark boson mediated feeble interaction between dark matter and hadronic matter on $f$-mode oscillation of neutron stars
本文基于Cowling近似，研究了通过暗标量和暗矢量玻色子介导的暗物质与强子物质微弱相互作用对混合暗物质中子星 $f$ 模振荡频率的影响，得出了四种强子模型下特定质量中子星的振荡频率范围。
There exist model calculations showing the modification of the hadronic parameters of $ρ$ meson in the nuclear environment. From these parameters, we extract the $ρ$ meson nucleus optical potential and show the medium effect due to this potential on the $ρ$ meson mass distribution spectra in the photonuclear reaction. The calculated results reproduced reasonably the measured $e^+e^-$ invariant mass, i.e., $ρ$ meson mass, distribution spectra in the $( γ, ρ^0 \to e^+e^- )$ reaction on nuclei.
The scattering of identical nuclei at low energies exhibits conspicuous Mott oscillations which can be used to investigate the presence of components in the predominantly Coulomb interaction arising from several physical effects. It is found that at a certain critical value of the Sommerfeld parameter the Mott oscillations disappear and the cross section becomes quite flat. We call this effect Transverse Isotropy (TI). The critical value of the Sommerfeld parameter at which TI sets in is found to be $η_{c} = \sqrt{3s +2}$, where $s$ is the spin of the nuclei participating in the scattering. No…
Polarized Deep-Inelastic Scattering from Nuclei -- A Relativistic Approach
提出了核自旋相关深度非弹性散射的协变公式。在相对论冲量近似下，用离质量壳层核子虚光子前向散射的振幅描述了包含核截面。导出了离壳层核子强子张量的一般结构，计算了离壳层核子结构函数在Bjorken极限下的主导行为。形式主义，这是有效的核子内的自旋1/2或1，适用于氘核的情况。
Non-radial oscillations of hadronic neutron stars, quark stars, and hybrid stars : Calculation of $f$, $p$, and $g$ mode frequencies
本研究计算了强子星、夸克星和混合星的非径向振荡频率，发现组成显著影响频率，但质量标度f模频率随致密性普遍变化，且g模频率与潮汐形变率线性相关，可支持混合星存在并揭示夸克排斥强度。
Oscillations of Cumulant Moments - Universality of Amplitudes
我们用简单的例子证明，在e^+e^-湮灭、强子pp碰撞和核碰撞p+A中观察到的多重数分布矩P（n）的振荡行为，在很大程度上是由只测量有限范围的P（n）的实验假象引起的。特别是，我们表明，通过应用一个合适的通用截止程序的测量P（n）得到的反应之前提到的类似幅度的振荡。零点的位置振荡作为一个功能的秩的时刻和它们的形状仍然是，然而，明显不同的不同类型的反应考虑。这在某种程度上也适用于原子核的碰撞，否则它们会遵循自己的行为模式。
The values of the antineutron-nucleus scattering lengths, and in particular their imaginary parts, are needed to evaluate the feasibility of using neutron mirrors in laboratory experiments to search for neutron-antineutron oscillations. We analyze existing experimental and theoretical constraints on these values with emphasis on low $A$ nuclei and use the results to suggest materials for the neutron/antineutron guide and to evaluate the systematic uncertainties in estimating the neutron-antineutron oscillation time. As an example we discuss a scenario for a future neutron-antineutron oscillati…
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