Momentum dependent dark matter scattering

被引：98

作者：

Chang, Spencer ^{[1
]}

Pierce, Aaron ^{[2
]}

Weiner, Neal ^{[3
]}

机构：

[1] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA

[2] Univ Michigan, MCTP, Dept Phys, Ann Arbor, MI 48109 USA

[3] NYU, Dept Phys, Ctr Cosmol & Particle Phys, New York, NY 10003 USA

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2010年 / 01期

基金：

美国国家科学基金会;

关键词：

dark matter theory; dark matter detectors; dark matter experiments; ELECTRIC-DIPOLE MOMENT; MODULATION; NEUTRON;

D O I：

10.1088/1475-7516/2010/01/006

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

It is usually assumed that WIMPs interact through spin-independent and spin-dependent interactions. Interactions which carry additional powers of the momentum transfer, q(2), are assumed to be too small to be relevant. In theories with new particles at the similar to GeV scale, however, these q(2)-dependent interactions can be large, and, in some cases dominate over the standard interactions. This leads to new phenomenology in direct detection experiments. Recoil spectra peak at non-zero energies, and the relative strengths of different experiments can be significantly altered. We present a simple parameterization for models of this type which captures much of the interesting phenomenology and allows a comparison between experiments. As an application, we find that dark matter with momentum dependent interactions coupling to the spin of the proton can reconcile the DAMA annual modulation results with other experiments.

引用

页数：11

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