Chiral power counting of one- and two-body currents in direct detection of dark matter

被引：90

作者：

Hoferichter, Martin ^{[1
,2
]}

Klos, Philipp ^{[1
,2
]}

Schwenk, Achim ^{[1
,2
]}

机构：

[1] Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany

[2] GSI Helmholtzzentrum Schwerionenforsch GmbH, ExtreMe Matter Inst EMMI, D-64291 Darmstadt, Germany

来源：

PHYSICS LETTERS B | 2015年 / 746卷

关键词：

Dark matter; WIMPs; Chiral Lagrangians; PERTURBATION-THEORY;

D O I：

10.1016/j.physletb.2015.05.041

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a common chiral power-counting scheme for vector, axial-vector, scalar, and pseudoscalar WIMP-nucleon interactions, and derive all one- and two-body currents up to third order in the chiral expansion. Matching our amplitudes to non-relativistic effective field theory, we find that chiral symmetry predicts a hierarchy amongst the non-relativistic operators. Moreover, we identify interaction channels where two-body currents that previously have not been accounted for become relevant. (C) 2015 The Authors. Published by Elsevier B.V.

引用

页码：410 / 416

页数：7

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