QCD effects on direct detection of wino dark matter

被引：89
作者：
Hisano, Junji [1 ,2 ,3 ]
Ishiwata, Koji [4 ]
Nagata, Natsumi [3 ,5 ]
机构：
[1] Nagoya Univ, Kobayashi Maskawa Inst Origin Particles & Univers, Nagoya, Aichi 4648602, Japan
[2] Nagoya Univ, Dept Phys, Nagoya, Aichi 4648602, Japan
[3] Univ Tokyo, Kavli IPMU WPI, UTIAS, Kashiwa, Chiba 2778584, Japan
[4] Kanazawa Univ, Inst Theoret Phys, Kanazawa, Ishikawa 9201192, Japan
[5] Univ Minnesota, Sch Phys & Astron, William I Fine Theoret Phys Inst, Minneapolis, MN 55455 USA
来源：
JOURNAL OF HIGH ENERGY PHYSICS | 2015年 / 06期
基金：
日本学术振兴会;
关键词：
NLO Computations; Supersymmetry Phenomenology; DYNAMICAL SUPERSYMMETRY BREAKING; DISCRETE GAUGE SYMMETRIES; DEEP-INELASTIC-SCATTERING; HIGGS-BOSON; HIGH-SCALE; HEAVY; SUSY; MASS; CONSTRAINTS; FLAVOR;
D O I：
10.1007/JHEP06(2015)097
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
We complete the calculation of the wino-nucleon scattering cross section up to the next-to-leading order in alpha (s) . We assume that the other sparticles are decoupled and wino interacts with the Standard Model particles via the weak interaction. As a result, the uncertainties coming from the perturbative QCD are significantly reduced to be smaller than those from the nucleon matrix elements. The resultant scattering cross section is found to be larger than the leading-order one by about 70%, which is well above the neutrino background. In the limit of large wino mass the spin-independent scattering cross section with proton turns out sigma (SI) (p) = 2. 3 (-aEuro parts per thousand 0.3) (+ 0.2) (-aEuro parts per thousand 0.4) (+ 0.5) x 10(-aEuro parts per thousand 47) cm(2) (errors come from perturbative calculation and input parameters, respectively). The computation for a generic SU(2) (L) multiplet dark matter is also presented.
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页数：39
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