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In neutron-proton (n-p) scattering experiments, gas targets have been used to measure scattering length by detecting neutrons and recoil protons. Changes in electron dynamics within the gas target have a negligible effect on dynamics of…

核理论 · 物理学 2023-12-05 Mingzhao Xing , Libin Fu

Few-body systems with resonant short-range interactions display universal properties that do not depend on the details of their structure or their interactions at short distances. In the three-body system, these properties include the…

量子气体 · 物理学 2012-08-16 S. Tölle , H. -W. Hammer , B. C. Metsch

Efimov effect is characterized by an infinite number of three-body bound states following a universal geometric scaling law at two-body resonances. In this paper, we investigate the influence of two-body loss which can be described by a…

量子气体 · 物理学 2024-09-27 Mingyuan Sun , Chang Liu , Zhe-Yu Shi

Ultracold atomic gases provide a controllable system to study the inelastic processes for three-body systems, where the three-body recombination rate depends on the scattering length scaling. Such scalings have been confirmed in bosonic…

量子气体 · 物理学 2023-10-24 Jiaming Li , Shuai Peng , Yirou Xu , Shiyin Kuang , Le Luo

The universal three-body dynamics in ultra-cold binary gases confined to one-dimensional motion are studied. The three-body binding energies and the (2 + 1)-scattering lengths are calculated for two identical particles of mass $m$ and a…

原子物理 · 物理学 2015-05-13 O. I. Kartavtsev , A. V. Malykh , S. A. Sofianos

The formalism to describe electron scattering reactions on two-neutron halo nuclei is developed. The halo nucleus is described as a three-body system (core+n+n), and the wave function is obtained by solving the Faddeev equations in…

核理论 · 物理学 2009-10-31 E. Garrido , E. Moya de Guerra

New measurements of the coherent elastic neutrino-nucleus scattering (CEvNS) are expected to be achieved in the near future by using two neutrino production channels with different energy distributions: the very low energy electron…

高能物理 - 唯象学 · 物理学 2020-02-19 B. C. Canas , E. A. Garces , O. G. Miranda , A. Parada , G. Sanchez Garcia

The occurrence of a new limit cycle in few-body physics, expressing a universal scaling function relating the binding energies of two consecutive tetramer states, is revealed, considering a renormalized zero-range two-body interaction…

原子与分子团簇 · 物理学 2011-10-26 M. R. Hadizadeh , M. T. Yamashita , Lauro Tomio , A. Delfino , T. Frederico

We explore potential explanations for why using large-$N_c$ ($N_c$ is the number of colors) scaling to determine the relative size of few-nucleon low-energy operators agrees with experiment even when dynamical $\Delta$'s are not explicitly…

核理论 · 物理学 2025-08-20 Thomas R. Richardson , Matthias R. Schindler , Roxanne P. Springer

The low-energy $J/\psi N$ scattering is of significant importance for various reasons. It is deeply interconnected with the hidden-charm $P_c$ pentaquark states, provides insights into the role of gluons in nucleon structures, and is…

高能物理 - 唯象学 · 物理学 2025-03-04 Bing Wu , Xiang-Kun Dong , Meng-Lin Du , Feng-Kun Guo , Bing-Song Zou

A dripline nucleus $^{22}$C is studied in a Borromean three-body model of $^{20}$C+$n$+$n$. The valence neutrons, interacting via a realistic potential, are constrained to be orthogonal to the occupied orbits in $^{20}$C. We obtain ample…

核理论 · 物理学 2009-11-11 W. Horiuchi , Y. Suzuki

Efimov states are a sequence of shallow three-body bound states that arise when the two-body scattering length is much larger than the range of the interaction. The binding energies of these states are described as a function of the…

量子气体 · 物理学 2019-06-18 M. Gattobigio , M. Göbel , H. -W. Hammer , A. Kievsky

In this work we present a framework that allows to solve the Faddeev equations for three-nucleon scattering using the wave-packet continuum-discretization method. We perform systematic benchmarks using results in the literature and study in…

核理论 · 物理学 2022-08-31 Sean B. S. Miller , Andreas Ekström , Kai Hebeler

Effects of strong final-state interactions in the superscaling properties of neutral-current quasielastic neutrino cross sections are investigated using the Relativistic Impulse Approximation as guidance. First- and second-kind scaling are…

核理论 · 物理学 2008-11-26 M. C. Martinez , J. A. Caballero , T. W. Donnelly , J. M. Udias

Model-independent constraints for the neutron-triton and proton-Helium-3 scattering lengths are calculated with a leading-order interaction derived from an effective field theory without explicit pions. Using the singlet neutron-proton…

核理论 · 物理学 2011-05-20 Johannes Kirscher

We study the equation of state of neutron matter using a family of unitarity potentials all of which are constructed to have infinite $^1S_0$ scattering lengths $a_s$. For such system, a quantity of much interest is the ratio…

核理论 · 物理学 2014-11-20 Huan Dong , L. -W. Siu , T. T. S. Kuo , R. Machleidt

We study neutron matter at and near the unitary limit using a low-momentum ring diagram approach. By slightly tuning the meson-exchange CD-Bonn potential, neutron-neutron potentials with various $^1S_0$ scattering lengths such as…

核理论 · 物理学 2008-11-26 L. -W. Siu , T. T. S. Kuo , R. Machleidt

Electromagnetic strength functions of halo nuclei exhibit universal features that can be described in terms of characteristic scale parameters. For a nucleus with nucleon+core structure the reduced transition probability, as determined,…

核理论 · 物理学 2007-05-23 S. Typel , G. Baur

I investigate the elastic electron scattering off nuclei far from the stability line. The effects of the neutron and proton skins and halos on the differential cross sections are explored. Examples are given for the charge distribution in…

核理论 · 物理学 2008-11-26 C. A. Bertulani

We experimentally and theoretically study the effect of the intraspecies scattering length onto the heteronuclear Efimov scenario, following up on our earlier observation of Efimov resonances in an ultracold Cs-Li mixture for negative…