Large-Nc constraints for elastic dark-matter-light-nucleus scattering in pionless effective field theory

被引：7

作者：

Richardson, Thomas R. ^{[1
,2
,3
,4
]}

Lin, Xincheng ^{[2
]}

Nguyen, Son T. ^{[2
]}

机构：

[1] Univ South Carolina, Dept Phys & Astron, Columbia, SC 29208 USA

[2] Duke Univ, Dept Phys, Durham, NC 27708 USA

[3] Johannes Gutenberg Univ Mainz, Inst Kernphys, D-55128 Mainz, Germany

[4] Johannes Gutenberg Univ Mainz, PRISMA Cluster Excellence, D-55128 Mainz, Germany

来源：

PHYSICAL REVIEW C | 2022年 / 106卷 / 04期

关键词：

DEUTERON SCATTERING; 3-BODY SYSTEM; RENORMALIZATION; CONVERGENCE; EXPANSION; BARYONS; MODEL; QCD;

D O I：

10.1103/PhysRevC.106.044003

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Recent proposals for the use of light nuclei as dark-matter direct detection targets necessitate a strong theoretical understanding of the nuclear physics involved. We perform relevant calculations for dark-matter- light-nucleus scattering in a combined pionless effective field theory and large-N-c expansion, where N-c is the number of quark colors. We include a general set of one-nucleon currents that have been used in other effective theories, as well as novel two-nucleon contact currents. First, we obtain constraints for the relative sizes of the dark-matter couplings to the one- and two-nucleon currents through the large-N-c expansion. Then, we use these constraints to make predictions for the relative sizes of spin-dependent and spin-independent cross sections for dark-matter scattering off of a nucleon, a deuteron, a triton, and helium-3.

引用

页数：19

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