Journal
PHYSICS LETTERS B
Volume 813, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2020.136056
Keywords
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Funding
- Joint Usage/Research Center for Interdisciplinary Large-scale Information Infrastructures (JHPCN) in Japan [jh180058-NAH]
- Ministry of Science and Higher Education of Russia [0657-2020-0015]
- National Research Foundation of Korea (NRF) - Korea government (MSIT) [2018R1A5A1025563, 2019R1A2C1005697]
- National Research Foundation of Korea [2019R1A2C1005697] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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This study calculates for the first time the scattering cross section between the lightest glueballs in SU(2) pure Yang-Mills theory, identifying them as potential candidates for dark matter. By evaluating the interglueball potential and scattering cross section, the research provides observational constraints on dark matter self-scattering and derives a lower bound on the scale parameter of the SU(2) Yang-Mills theory.
We calculate for the first time the scattering cross section between lightest glueballs in SU (2) pure Yang-Mills theory, which are good candidates of dark matter. In the first step, we evaluate the interglueball potential on lattice using the HAL QCD method, with several lattice spacings (beta = 2.1, 2.2, 2.3, 2.4, and 2.5). The systematics associated with nonzero angular momentum effect is removed by subtracting the centrifugal force. The statistical accuracy is improved by employing the cluster-decomposition error reduction technique and by using all space-time symmetries. We then determine the low energy glueball effective Lagrangian and the scattering cross section at low energy, which is compared with the observational constraint on the dark matter self-scattering. We derive the lower bound on the scale parameter of the SU (2) Yang-Mills theory, as A > 60 MeV. (C) 2020 The Author(s). Published by Elsevier B.V.
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