Jacques Van de Wiele, Saro Ong
The completely general radiative corrections to lowest order, including the final and initial state radiations, are studied in proton-antiproton annihilation to an electron-positron pair. Numerical estimates have been made in a realistic configuration of the PANDA detector at FAIR for the proton time-like form factors measurements.
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Search for Three-Nucleon Force Effects in Two-Body Photodisintegration of 3He(3H) and in the Time Reversed Proton-Deuteron Radiative Capture Process
用Faddeev方法计算了~ 3 He（~ 3 H）的核子-氘光致衰变和质子-氘辐射俘获。大部分结果是基于AV 18核子-核子力和Urbana IX三核子力以及显式交换电流或应用Siegert方法。三核子力效应的预测和支持的大部分数据的过程。
The nucleon radiative capture reactions are important in pure and applied nuclear physics, especially in nuclear astrophysics. The keV-nucleon radiative capture reactions are studied with $^{12}$C and $^{16}$O targets using the bound-to-continuum potential model in which both scattering and bound states are treated simultaneously and based on the Skyrme Hartree-Fock approximation. The obtained results are shown to be in good agreement with the available experimental data. Alongside astrophysical aspects, the nuclear structure features were revisited for enlarging the prospect of adopting the n…
We calculate the nucleon parameters in nuclear matter using the QCD sum rules method. The radiative corrections to the leading operator product expansion terms are included, with the corrections of the order α_s beyond the logarithmic approximation taken into account. The density dependence of the influence of radiative corrections on the nucleon parameters is obtained. At saturation density the radiative corrections increase the values of vector and scalar self-energies by about 40 MeV, and 30 MeV correspondingly. The results appear to be stable with respect to possible variations of the valu…
Radiative corrections and parity-violating electron-nucleon scattering
在标准模型的框架下，分析了电子-质子弹性散射中宇称破坏不对称性的辐射修正。我们包括一个完整的一个圈的贡献，一个夸克电流振幅。还计算了软光子发射对不对称性的贡献，给出了不含红外发散的最终结果。本文利用单夸克辐射修正，结合前人对多夸克效应的研究和最近的SAMPLE实验数据，对核子的电弱形状因子提出了一些新的约束.
Trinucleon Photo Reactions with $Δ$-Isobar Excitation: Radiative Nucleon-Deuteron Capture and Two-Body Photo Disintegration of the Three-Nucleon Bound State
本文描述了具有两体末态的三核子束缚态的辐射核子-氘核俘获和光衰变。描述使用扩展到包括单个核子激发到\diso的核子自由度。重子相互作用和电磁流将核子态和态耦合成一个\diso。反应的初始状态或最终状态采用三p粒子散射方程的精确解。电流有一个重子和两个重子的贡献。讨论了\diso在描述所考虑的光反应中的作用，发现其作用是温和的。在长波长极限下，自旋观测量$A_{yy}$和$T_{20}$在$90^{\circ}$ 1a b散射角下的计算与$E1$ Siegert方法无关.
Radiative capture of nucleons at energies of astrophysical interest is one of the most important processes for nucleosynthesis. The nucleon capture can occur either by a compound nucleus reaction or by a direct process. The compound reaction cross sections are usually very small, specially for light nuclei. The direct capture proceeds either via the formation of a single-particle resonance, or a non-resonant capture process. In this work we calculate radiative capture cross sections and astrophysical S-factors for nuclei in the mass region A<20 using single-particle states. We carefully discus…
Radiative corrections for the two-nucleon interaction in effective field theory
本文采用速度重整化群研究核 EFT 中显式光子自由度对两核子体系的影响，发现其对氘核及辐射俘获可观测量造成百分比量级修正。
The nucleon-deuteron radiative capture process is investigated using the chiral nuclear potentials and the electromagnetic currents developed by the Bochum-Bonn group. While the strong interaction is taken up to the next-to-next-to-leading order, the electromagnetic current consists of a single nucleon current, the leading one-pion exchange one and is supplemented by contributions from the long-range two-pion exchange current at next-to-leading-order. The theoretical predictions for the cross sections as well as analyzing powers show strong dependence on the values of regularization parameters…
We have studied the neutron-capture reactions 8Li(n,gamma)9Li and its role in the primordial nucleosynthesis. The n + 8Li --> 9Li + gamma reaction has a significant astrophysical interest because it includes one of the variants of chain of primordial nucleosynthesis processes of the Universe and thermonuclear reactions in type II supernova.
Radiative processes of nucleon interactions and possible existence of exotic dibaryons
估计了反应$pp \to pp γγ$的截面，并探讨了该反应在双核子系统中激发亚核自由度的可能性，特别是NN-去偶重子共振的产生和衰变，本文从两个实验的初步数据出发，对中间双重子共振激发的一些论点和意义进行了初步的讨论。由DIBAR 2 $γ$ -协作组在初始质子$T_{lab} \simeq 200 MeV$的动能下观察到的光子产额和能量分布。
Influence of medium correction of nucleon nucleon cross section on the fragmentation and nucleon emission
利用同位旋相关的量子分子动力学模型（IQMD），研究了中能重离子碰撞中由同位旋相关的核子截面引起的介质修正对碎裂和核子发射的影响.我们发现，介质修正增强了中等质量碎片$N_{imf}$多重数和核子发射数$N_{n}$对核子核子截面的同位旋效应的依赖性，而动量相关相互作用（MDI）对增强碎裂和核子发射过程中介质修正对两体碰撞的同位旋效应的影响也有重要作用.在考虑介质修正和动量相关相互作用的作用后，$N_{imf}$和$N_{n}$对两体碰撞的同位旋效应的依赖性增加，有利于了解同位旋相关的核子核子截面的信息
Proton-deuteron radiative capture and two- and three-body photodisintegration of 3He at low energy are described using realistic hadronic dynamics and including the Coulomb force. The sensitivity of the observables to the relativistic corrections of one-nucleon electromagnetic current operator is studied. Significant effects of the relativistic spin-orbit charge are found for the vector analyzing powers in the proton-deuteron radiative capture and for the beam-target parallel-antiparallel spin asymmetry in the three-body photodisintegration of 3He.
Radiative alpha-capture cross sections from realistic nucleon-nucleon interactions and variational Monte Carlo wave functions
我们首次用变分蒙特卡罗方法计算了能量低于2 MeV的辐射俘获反应t（α，γ）^7 Li和^3 He（α，γ）^7 Be的截面，所用的波函数是从真实的核子-核子相互作用中导出的。在研究了几个小的修正占主导地位的E1运营商，我们发现能量依赖的低能量S-因子，同意合理的实验测量。这与之前对这些过程的理论理解并不矛盾，但是t（α，γ）^7Li S因子的零能导数比大多数模型中的小。虽然这种方法原则上可以预测截面归一化，但我们的结果的归一化通常太低。
We study radiative capture reactions using quasi-separable potentials. This procedure allows an easier treatment of non-local effects that can be extended to three-body problems. Using this technique, we calculate the neutron and proton radiative capture cross sections on $^{12}$C. The results obtained are shown to be in good agreement with the available experimental data.
Quenching of spin operators in the calculation of radiative corrections for nuclear beta decay
本文对超允许费米$0^+ \rightarrow 0^+$核β衰变辐射修正的轴向矢量分量的计算进行了修正，在轴向矢量和电磁相互作用中加入淬灭常数而不是自由核子耦合常数。结果增加了$V_{ud}$的推导值，但没有恢复CKM矩阵中的幺正性。
Medium influence of the nucleon nucleon cross section on the fragmentation
基于同位旋相关的量子分子动力学模型，研究了中能重离子碰撞中，同位旋相关核子核子截面的介质修正对碎裂的影响.我们发现，由一个与同位旋相关的核子截面产生的介质修正增加了碎裂过程对介质内核子截面的同位旋效应的依赖性，同时，动量相关相互作用（MDI）对增强介质修正对碎裂过程中两体碰撞的同位旋效应的影响也有重要作用.在这种情况下，中等质量碎片$N_{imf}$的多重数对介质修正和MDI引起的两体碰撞的同位旋效应的依赖性，是在介质修正中提取与同位旋相关的核子核子截面信息的一个探针。
We investigate the $N^{\ast}(1535)\rightarrow Nγ$ transition in the framework of light cone QCD sum rules. In particular, using the most general form of the interpolating current for the nucleon as well as the distribution amplitudes of the photon, we calculate two transition form factors responsible for this channel and use them to evaluate the decay width and branching ratio of the transition under consideration. The result obtained for the branching fraction is in a good consistency with the experimental data.
Effects of center-of-mass correction and nucleon anomalous magnetic moments on nuclear charge radii
本文利用相对论Hartree-Bogoliubov模型系统研究质心修正与核子反常磁矩对核电荷半径的影响，发现两者效应量级相当且显著影响轻至重核的电荷半径。
The ${^3{\rm He}}(α,γ){^7{\rm Be}}$ and ${^3{\rm H}}(α,γ){^7{\rm Li}}$ astrophysical $S$ factors are evaluated at low collision energies (less than 2.5 MeV in the centre-of-mass frame) within the no-core shell model with continuum approach using a renormalized chiral nucleon-nucleon interaction.
Electromagnetic corrections to the dominant two-pion exchange nucleon-nucleon potential
在双圈级手征微扰理论中，我们计算了与大的低能常数$c_3$成正比的等序$πN$接触顶点对主导的两π交换核子-核子相互作用的电磁修正.我们发现，各自的$2πγ$ -交换势包含相当大的同位旋破坏组件的金额约-1%的强吸引力的isoscords中心$2π$ -交换势。这些新的电荷独立性和电荷对称性破缺中心势的典型值是在$r= m_π^{-1} = 1.4 $ fm的核子距离处的$0.3 $ MeV。我们的分析结果，这大概占主导地位的$2πγ$交换相互作用的形式，它可以很容易地实施到相移分析和少体计算。
Meson-nucleon vertex corrections to the vacuum polarization in the cutoff field theory and tensor coupling
在零密度下，研究了具有截断的$σ-ω$模型中介子-核子顶点对真空极化的修正。结果表明，当截断值较小时（<5GeV），真空极化的顶点修正的性质与普通重整化过程所描述的性质有些不同。在重整化群方法的框架下构造了低能有效拉格朗日量。介子-核子相互作用的弱张量耦合和弱导数耦合在介子和核子的低能有效理论中可能是必需的。
Radiative Corrections and the Renormalization Group for the Two-Nucleon Interaction in Effective Field Theory
本文结合无 pion 有效场论与重整化群，研究辐射修正对核子-核子势和氘核结合能的影响，发现结合能移动约百分之几且与实验一致，为少体系统标准模型精密检验奠定基础。
Ghost Poles in the Nucleon Propagator: Vertex Corrections and Form Factors
在费米子和介子的相对论性场论中，核子传播子的Schwinger-Dyson方程考虑了顶点修正。通常的核子传播子的Hartree-Fock近似会产生复数（鬼）极点，这违反了量子场论的基本定理。在矢量介子的理论中，有顶点修正，在紫外区产生强阻尼的顶点函数。一组这样的修正被称为量子电动力学中的Sudakov形状因子。当核子传播子Schwinger-Dyson方程的Hartree-Fock近似中包含有质量中性矢量介子产生的Sudakov形状因子时，鬼极消失，恢复了与量子场论基本要求的一致性.
Density dependence of in-medium nucleon-nucleon cross sections
从Pauli阻塞效应的几何考虑出发，得到了介质中核子-核子截面密度关系的最低阶修正。作为一个副产品，它表明，介质修正意味着1/E能量依赖的密度依赖项。
The $π^- + {^2{\rm H}} \rightarrow γ+ n + n$, $π^- + {^3{\rm He}} \rightarrow γ+ {^3{\rm H}}$, $π^- + {^3{\rm He}} \rightarrow γ+ n + d$, $π^- + {^3{\rm He}} \rightarrow γ+ n + n + p$ and $π^- + {^3{\rm H}} \rightarrow γ+ n + n + n$ capture reactions are studied with the AV18 two-nucleon potential and the Urbana~IX three-nucleon potential. We provide for the first time realistic predictions for the differential and total capture rates for all these processes, treating consistently the initial and final nuclear states. Our results are based on the single nucleon Kroll-Ruderman-type transition o…
Complete set of electromagnetic corrections to the nucleon mass in the Nambu-Jona-Lasinio model
我们展示了如何推导出完整的电磁修正的Nambu-Jona-Lasinio（NJL）模型的核子。我们的研究结果，使一个准确的估计的电磁贡献的中子-质子质量差在这个模型。同时，我们的程序演示了如何计算完整的介子修正NJL模型，保持手征对称性。
Electroweak Radiative Corrections to Parity-Violating Electron-Nucleus Scattering
本文研究了电子-核散射中违反宇称的不对称性A_pv的辐射修正，发现顶点修正和真空极化贡献存在显著抵消，导致总修正主要由真空极化主导，约为-0.5%。
Radiative Corrections to Elastic Electron-Proton Scattering for Polarized Electrons
分析了极化电子的高能弹性电子-质子散射的辐射修正。我们表明，如果固有的近似在计算开发的Tsai和Mo和Tsai的工作，已被用于分析几乎所有的实验数据有关的中，高能量的弹性电子散射在过去的三十年，保持，然后相同的辐射校正适用于初始极化和非极化电子的情况下。
Charged radiative pion capture on the nucleon in heavy baryon chiral perturbation theory
利用重重子手征微扰理论（HBChPT）中的$O(p^3)$计算了$π^- p \to γn$和$π^+ n \to γp$的微分截面和s波、p波多极子.拟合现有的数据允许几个低能量常数被确定。计算结果与色散关系的预测结果基本一致。
Nucleon form factors, B-meson factories and the radiative return
本文研究了在$B$ -介子工厂中利用辐射返回测量电磁核子形状因子的可行性。角分布允许将来自两个形状因子的贡献分离。给出了实验室和强子静止系的分布，并讨论了不同坐标系的优点。它表明，$Q^2$值高达8或甚至9 GeV的$^2$是触手可及的。本文将蒙特卡罗事件发生器PHOKHARA推广到核子末态，给出了包含初态辐射次至首阶辐射修正的结果。角削减率和分布的影响进行了调查和辐射校正的相对重要性进行了分析。
It is possible to describe the scattering and the radiative capture with help of a Breit-Wigner resonance with negative energy.
Resonance Contributions to Radiative Corrections in Charged-Current Elastic (Anti)Neutrino-Nucleon Scattering at GeV Energies
本文首次评估了GeV能量下电荷电流弹性（反）中微子-核子散射中共振对辐射修正的贡献，揭示了共振中间态对截面的千分之一级影响。
Radiative corrections to neutron beta decay and (anti)neutrino-nucleon scattering from low-energy effective field theory
该研究采用自上而下有效场论方法，通过匹配四费米子有效场论建立重子手征微扰理论低能常数与流关联函数的联系，厘清中子β衰变和低能（反）中微子-核子散射辐射修正的方案依赖性，实现长短程贡献分离并给出领头阶电磁贡献的可靠预测。
Radiative corrections in neutral-current (anti)neutrino elastic scattering at $\text{GeV}$ energies I: Nucleon targets
研究 GeV 能量下中性流（反）中微子弹性散射的辐射修正，通过有效场论框架将截面分解，明确味依赖性并改进 QCD 贡献，单核子水平修正与奇异夸克贡献相当，结果与实验数据高度吻合。
Matrix Model for the Transition Expansion of Dispersive Corrections to Nucleon-Nucleus Total Cross Sections
本文用核子-核子截面算符的有限维矩阵模型，计算了核子-核总截面的色散修正，以及在可以忽略动量转移的高能极限下，核子-核总截面展开式中的主要项，即非弹性跃迁数。
We derive the short-range contributions and the leading relativistic corrections to the three-nucleon force at next-to-next-to-next-to-leading order in the chiral expansion.
Ordinary and radiative muon capture on the proton and the pseudoscalar form factor of the nucleon
在小尺度展开的三阶和二阶介子、核子和δ等压线的有效场论中，我们分别计算了普通介子和辐射介子在质子上的俘获。先前的手征有效场论计算只采用了π介子和核子的自由度，无法再现TRIUMF质子辐射μ介子捕获的开创性实验中的光子光谱。在过去的几年里，人们推测理论和实验之间的差异可能是由于Delta（1232）相关的效应，这只包括通过更高阶的接触相互作用在标准的手性方法。在本报告中，我们证明这种推测并不成立。我们表明，从天真的维度分析的期望相反的光子光谱和总速率的辐射μ子捕获的同量异位素效应是百分之几的顺序，与早期的研究结果在一个更唯象的方法相一致。我们进一步证明，无论是普通的和辐射μ子捕获构成一个非常好的表现手征扩展系统，无论是在标准的手征微扰理论和小尺度膨胀，并提出了一些新的想法，可能是在底部的辐射μ子捕获的理论和实验之间尚未解决的差异。最后，我们评论的程序所采用的TRIUMF集团提取新的信息，从他们的辐射μ子捕获实验的赝标形状因子的核子。我们表明，这是不一致的普通μ子捕获数据。
Radiative pion capture by a nucleon
在重子手征微扰理论（HBChPT）中计算了$π^- p \to γn$和$π^+ n \to γp$的微分截面，直到$O(p^3)$. $O(p)$和$O(p^2)$中的表达式没有自由参数。在$O(p^3)$处有三个未知参数，即HBChPT拉格朗日量的低能常数，这是通过拟合实验数据确定的。两个可接受的拟合，这可以通过与早期的色散关系计算的逆过程进行比较来分离。表达式的多极子，重点是p波多极子，获得和评估阈值。一般来说，从最好的两个拟合得到的结果是在良好的色散关系的预测。
Nucleon axial-vector form factor and radius from radiatively-corrected antineutrino scattering data
本文基于反中微子散射数据，利用辐射校正方法提取核子轴向形式因子和半径，并比较理论预测与实验数据的差异。
We apply the ab initio no-core shell model/resonating group method (NCSM/RGM) approach to calculate the cross section of the 7Be(p,gamma)8B radiative capture. This reaction is important for understanding the solar neutrino flux. Starting from a selected similarity-transformed chiral nucleon-nucleon interaction that accurately describes two-nucleon data, we performed parameter-free many-body calculations that simultaneously predict both the normalization and the shape of the S-factor. We study the dependence on the number of 7Be eigenstates included in the coupled-channel equations and on the s…
We calculate the leading-order QED radiative corrections to the process $e^- p\rightarrow e^- p l^- l^+ $ in the soft-photon approximation, in two different energy regimes which are of relevance to extract nucleon structure information. In the low-energy region, this process is studied to better constrain the hadronic corrections to precision muonic Hydrogen spectroscopy. In the high-energy region, the beam-spin asymmetry for double virtual Compton scattering allows to directly access the Generalized Parton Distributions. We find that the soft-photon radiative corrections have a large impact o…
Isospin breaking corrections to nucleon form factors in the constituent quark model
在非相对论组分夸克模型中，研究了由于夸克质量差和夸克间库仑相互作用引起的核子波函数中的同位旋破缺及其对核子电弱形状因子的影响.该模型精确地计算了核子波函数和电弱形状因子中的机械诱导同位旋破缺。本文用一级微扰理论计算了电磁诱导的同位旋混合物，包括最低共振态和核子量子数，但同位旋为3/2。我们发现一个小的（$\leq 1\%$），但有限的修正异常的磁矩的核子几乎完全源于夸克质量差，而静态核子轴向耦合仍然是未修正的。核子的电荷半径、磁性半径和轴向半径都出现了相同数量级的修正。在这个模型中对电荷半径的修正基本上是等截面的，并且对于从例如违反电子-质子不对称性的弹性前向角宇称或弹性${}^4He({\vec e},e')$实验中提取奇异性半径可能具有一定的意义。
We analyze isospin breaking through quark mass differences and virtual photons in the pion-nucleon scattering lengths in all physical channels in the framework of covariant baryon chiral perturbation theory. The so-called triangle relation is found to be violated by about 1.5 %. We encounter a substantial isospin-breaking correction to neutral-pion-nucleon scattering beyond Weinberg's prediction due to a cusp effect. Finally, the application to hadronic atoms is briefly discussed.
Within the pion-nucleon chiral perturbation theory we derive the leading chiral correction to the nucleon GPD at $ξ=0$. We discuss the difficulties of consideration of nonlocal light-cone operators within the theory with a heavy particle and the methods to solve the difficulties. The consideration of the chiral corrections directly for nonlocal operators allows to resolve the ambiguity of the inverse Mellin transformation. In particular, we show that the mixing between axial and vector GPDs are of order $m_π^2/M_N^2$, which is two orders of magnitude less that it follows from the Mellin moment…
The quasielastic charged current (CCQE) $ν_e n \rightarrow e^- p$ scattering is the dominant mechanism to detect appearance of a $ν_e$ in an almost $ν_μ$ flux at the 1 GeV scale. Actual experiments show a precision below 1% and between less known background contributions, but necessary to constraint the event excess, we have the radiative corrections. A consistent model recently developed for the simultaneous description of elastic and radiative $πN$ scattering, pion-photoproduction and single pion production processes, both for charged and neutral current neutrino-nucleon scattering, is exten…
Leading Chiral Corrections to the Nucleon Generalized Parton Distributions
利用重子手征微扰理论，研究了对核子广义部分子分布全集的主导手征修正。通过非正扭矩阵元计算了核子GPD矩对主导夸克质量和动量转移的依赖关系。这些结果，然后应用到GPD和他们的碰撞参量空间分布的洞察。
The interpretation of high-precision lepton-nucleon scattering experiments requires the knowledge of higher-order radiative corrections. We present a calculation of the cross section for unpolarized lepton-proton scattering including leptonic radiative corrections up to second order, including one- and two-loop corrections, radiation of one and two photons and one-loop corrections for one-photon radiation. Numerical results are given for the planned P2 experiment at the MESA facility in Mainz, and some results are also discussed for Qweak and the suggested MUSE experiment.
Triple-Pomeron Matrix Model for Dispersive Corrections to Nucleon-Nucleus Total Cross Section
基于单个核子衍射散射的三重坡密子行为，采用矩阵模型计算了重核高能散射总截面的色散修正，其中截面算符连接了入射核子的不同态.包括由于纵向动量转移的减少和随着能量的增加而打开更多通道的能量依赖效应。在非弹性跃迁数的展开中的三个主导项被评估，并与实验室动量范围从50到200 GeV/c的核子从Pb^{208}散射的均匀核密度近似模型的精确结果进行比较。
2-Nucleon 1-Loop Corrections to Pion Double Charge Exchange within Heavy Baryon Chiral Perturbation Theory
在重子手征微扰理论（HBChPT）的框架下，计算了阈下π介子双电荷交换（DCX）散射的双核子单圈修正。在静态极限和使用脉冲近似下，得到了（2核子）1圈修正的估计。我们发现一个小的（1.6%）增加相对于领先的顺序树图。
The high precision parity violating electron scattering experiments PREX and QWEAK are sensitive to radiative corrections. In this paper we introduce the PREX experiment that measures the neutron radius of $^{208}$Pb and discuss coulomb distortion corrections. We then discuss dispersion corrections for QWEAK that aims to measure the weak charge of the proton.
Radiative corrections to the nucleon isovector $g_V$ and $g_A$
研究基于电弱、QCD和QED修正，探讨核子低能耦合常数g_V和g_A的辐射修正，通过统一效应获得总修正3.5(2.1)%和5.6(0.7)%，并预测基于lattice-QCD和数据驱动输入的g_A值为1.265(26)和1.240(9)。
The nucleon axial charge is a central ingredient in nuclear and particle physics, and a key observable in precision tests of the electroweak Standard Model sector and beyond. We report on the first complete calculation of its electroweak quantum corrections up to $\mathcal{O}(α)$, using a combination of current algebra techniques and QCD sum rules. We find a substantial enhancement due to the weak magnetism contribution in the elastic channel, and include higher-twist and target mass corrections at low $Q^2$ to find $Δ_R^A = 0.02881(22)$. Using analogous methods, we determine a new value for t…
Target-mass corrections and the Bloom-Gilman duality of the nucleon structure function
本文研究了核子结构函数低阶矩中四动量平方转移Q**2在~ 0.5和10（GeV/c）**2之间的Bloom-Gilman局域对偶性的发生。在与以前的分析截断康沃尔-诺顿矩，限于核子共振生产区域的差异，被认为是。目标质量修正所起的作用进行说明，表明目标质量效应是必要的（但不是足够的）生产所观察到的布卢姆-吉尔曼二元性的核子结构功能。分析了在大的纳克曼变量值和核子弹性峰贡献的非物理区域之间的局部对偶性的可能性。据发现，质子磁形状因子提取假设当地的二元性是显着低于实验数据在低和中间值的Q**2。
The differential cross section for elastic scattering of deuterons on electrons at rest is calculated taking into account the QED radiative corrections to the leptonic part of interaction. These model-independent radiative corrections arise due to emission of the virtual and real soft and hard photons as well as to vacuum polarization. We consider an experimental setup where both final particles are recorded in coincidence and their energies are determined within some uncertainties. The kinematics, the cross section, and the radiative corrections are calculated and numerical results are presen…
NNLO Corrections to Nucleon-Nucleon Scattering and Perturbative Pions
在有效场论下，计算了1 S 0、3S 1和3D 1核子-核子散射相移。还将该顺序的1 P1、3 P0、3 P1、3 P2、1D 2、3D 2和3D 3相移的预测与数据进行比较。计算处理π介子微扰，包括从顺序$Q_r^3$和$Q_r^4$辐射π介子图的NNLO贡献。在3S 1，3D 1，3 P0和3 P2通道，我们发现很大的分歧与奈梅亨分波分析在NNLO。这些自旋三重态通道有很大的修正，从图与两个潜在的π交换不消失的手征极限。我们比较我们的结果计算内的温伯格方法，并发现，在一些自旋三重态通道的总和潜在的π介子图似乎是必要的再现所观察到的相移。在自旋单重态通道中，对势π介子的非微扰处理与微扰方法相比没有显著的改进。
We investigate the interactions of weakly interacting massive particles (WIMPS) with nucleons in nuclear medium by taking into account the effect of nuclear dynamics. We derive the nonrelativistic effective operators starting from the relativistic mean-field approximation. Certain interactions receive non-negligible corrections, which may significantly change the sensitivities of WIMP-nucleus scattering cross section to these effective operators.
Properties of amplitudes that describe radiative corrections in a bag of heavy fermions bound by the Higgs boson exchange are studied. Classes of amplitudes, in which the large fermion mass is canceled out and hence produces no enhancement for the radiative corrections are found. For fermions with masses in the region 400< m < 1000 Gev all relevant amplitudes are found to possess this property. Correspondingly the radiative corrections for this range of masses are small. For very heavy fermions, m>1000 Gev, the processes described by diagrams with closed fermion loops are also mass-independent…
QED Radiative Corrections in Processes of Exclusive Pion Electroproduction
给出了质子排他性电生π的辐射修正（RC）计算的形式。为RC程序编制了FORTRAN程序EXCLURAD。对Jefferson实验室的实验进行了运动学数值分析。
Solar Neutrinos: Radiative Corrections in Neutrino-Electron Scattering Experiments
本文计算了太阳中微子对中微子-电子散射的辐射修正，包括电子反冲能谱和总截面。辐射修正单调地改变入射\b 8中微子的电子反冲能谱，在最高电子能量处观察到反冲电子的相对几率降低约4%.对于$p-p$和$\be7$中微子，反冲谱没有明显的影响。太阳中微子-电子散射的总截面比以前的计算值减小了约2%。我们还计算了$^{13}$ N和$^{15}$ O中微子的反冲能谱，包括辐射修正.
Comment on ``Radiative corrections and parity nonconservation in heavy atoms''
本文简要地介绍了量子电动力学修正原子中宇称不守恒的最新进展。主要结论-Wood等人的实验结果与标准模型不矛盾
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