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Charged current quasi-elastic scattering of vμoff^12C

Chinese Physics C 2018年第12期42卷 25-31页

作者： Deepika Grover Kapil Saraswat Prashant Shukla Venktesh Singh Department of Physics Institute of ScienceBanaras Hindu UniversityVaranasi 221005India Nuclear Physics Division Bhabha Atomic Research CentreMumbai 400085India Homi Bhabha National Institute Anushakti NagarMumbai 400094India

In this work, we study charged current quasi-elastic scattering （QES） of vμ off nucleon and nucleus using a formalism based on the Llewellyn Smith （LS） model. Parameterizations by Galster et al. are used for electric and magnetic Sach＇s form factors of the nucleons. We use the Fermi gas model along with the Pauli suppression condition to take into account the nuclear effects in the anti-neutrino-nucleus QES. We calculate vμ-p and vμ-^12C charged current quasi-elastic scattering differential and total cross sections for different values of axial mass MA, and compare the results with data from the GGM, SKAT, BNL, NOMAD, MINERVA and MiniBooNE experiments. The present theoretical approach gives a good description of differential cross section data. The calculations with axial mass MA =0.979 and 1.05 GeV are compatible with data from most of the experiments.

关键词： cross section quasi-elastic scattering axial mass form factors

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Large-angle quasi-elastic scattering around the Coulomb barrier

Large-angle quasi-elastic scattering around the Coulomb barr...

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6th China-Japan Joint Nuclear Physics Symposium

作者： K.Hagino Department of Physics Tohoku UniversitySendai 980-8578Japan

＜正＞We summarize recent theoretical activities on heavy-ion quasi-elastic scattering at ener- gies around the Coulomb *** first introduce a barrier distribution defined in terms of cross sections of large-angle quasi-elastic *** discuss possible advantages for its exploitation, putting a particular emphasis on future experiments with radioactive *** then present our recent systematic studies on quasi-elastic scattering at deep-subbarrier energies,that offer an unam- biguous way to extract the surface diffuseness parameter of the nucleus-nucleus potential.

关键词： quasi-elastic scattering internucleus potential barrier distribution quantum reflection coupled-channels method

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Breakup Effect of Weakly Bound Projectile on the Barrier Distribution Around Coulomb Barrier

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Plasma Science and Technology 2012年第5期14卷 390-392页

作者：贾会明林承键张焕乔刘祖华喻宁杨峰徐新星贾飞吴振东张世涛 China Institute of Atomic Energy

The excitation function of quasi-elastic （QEL） scattering at a backward angle has been measured for 9^Be＋208^Pb. The barrier distribution was extracted by means of the first derivative of the measured excitation function and calculated with the coupled-channel model. The present work shows that the experimental barrier distribution extracted from QEL scattering is shifted to the low energy side by 1.5 MeV as compared with the theoretical one. This energy discrepancy indicates that breakup is important in the colliding processes of the weakly bound nucleus system.

关键词： quasi-elastic scattering barrier distribution coupled-channel model

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Many-Body Correlation Effects on the xBjorken-Dependence of Cross Section Ratios off Nuclei for 1 <xBjorken<2

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Journal of Modern Physics 2022年第1期13卷 56-65页

作者： Athanasios Petridis Allen Barr Drew Fustin Department of Physics and Astronomy Drake University Des Moines USA

Many-body correlations in nuclei determine the behavior of Deep-Inelastic-scattering (DIS) and quasi-elastic scattering (QES) cross section ratios off heavy over light nuclei especially for xBjorken > 1, obtained at Jefferson Lab. They can be described in terms of quark-cluster formation in nuclei due to wave-function overlapping, manifesting itself when the momentum transfer is high so that the partonic degrees of freedom are resolved. In clusters (correlated nucleons) the quark and gluon momentum distributions are softer than in single nucleons and extend to xBjorken > 1. The cluster formation probabilities are computed using a network-defining algorithm in which the initial nucleon density is either standard Woods-Saxon or is input from lower energy data while the critical radius for nucleon merging is an adjustable parameter. The exact choice of critical radius depends on the specific nucleus and it is anti-correlated to the rescaling of the xBjorken needed for bound nucleons. The calculations show that there is a strong dependence of the cross section ratios on the xBjorken in agreement with the data and that four-body correlations are needed to explain the experimental results even in the range 1 xBjorken < 2. The dependence on the specific exponents of parton distributions in high-order clusters is weak.

关键词： Deep Inelastic scattering quasi-elastic scattering Short-Range Correlations Quark-Clusters

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