Not as big as a barn: Upper bounds on dark matter-nucleus cross sections
Not as big as a barn: Upper bounds on dark matter-nucleus cross sections
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不像谷仓那么大:暗物质-核横截面的上限
DOI:
10.1103/physrevd.100.063013
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发表时间:
2019
影响因子:
5
通讯作者:
Peter, Annika H. G.
中科院分区:
文献类型:
--
作者:
Digman, Matthew C.;Cappiello, Christopher V.;Beacom, John F.;Hirata, Christopher M.;Peter, Annika H. G.
Critical probes of dark matter come from tests of its elastic scattering with nuclei. The results are typically assumed to be model independent, meaning that the form of the potential need not be specified and that the cross sections on different nuclear targets can be simply related to the cross section on nucleons. For pointlike spin-independent scattering, the assumed scaling relation is, where thecomes from coherence and thefrom kinematics for. Here we calculate where model independence ends, i.e., where the cross section becomes so large that it violates its defining assumptions. We show that the assumed scaling relations generically fail for dark matter-nucleus cross sections, significantly below the geometric sizes of nuclei and well within the regime probed by underground detectors. Last, we show on theoretical grounds, and in light of existing limits on light mediators, that pointlike dark matter cannot have, above which many claimed constraints originate from cosmology and astrophysics. The most viable way to have such large cross sections is composite dark matter, which introduces significant additional model dependence through the choice of form factor. All prior limits on dark matter with cross sectionswithmust therefore be reevaluated and reinterpreted.
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DOI:
--
发表时间:
1977
期刊:
影响因子:
--
作者:
J. Goodisman
通讯作者:
J. Goodisman
影响因子:
5.4
作者:
Yang Bai;P. Fox
通讯作者:
Yang Bai;P. Fox
影响因子:
5
作者:
J. Smirnov;J. Beacom
通讯作者:
J. Smirnov;J. Beacom
影响因子:
5.4
作者:
Hardy E
通讯作者:
Hardy E
DOI:
10.1088/1475-7516/2013/04/012
发表时间:
2013
期刊:
arXiv: High Energy Astrophysical Phenomena
影响因子:
--
作者:
S. Profumo;Lorenzo Ubaldi;M. Gorchtein
通讯作者:
M. Gorchtein