Shedding new light on sterile neutrinos from XENON1T experiment

Soroush Shakeri; Fazlollah Hajkarim; She-Sheng Xue

doi:10.1007/JHEP12(2020)194

. 2020 Dec 30;2020(12):194. doi: 10.1007/JHEP12(2020)194

Shedding new light on sterile neutrinos from XENON1T experiment

Soroush Shakeri ^1,^2,^✉, Fazlollah Hajkarim ^3,⁴, She-Sheng Xue ^5,^6,⁷

PMCID: PMC7779899 PMID: 33424225

Abstract

The XENON1T collaboration recently reported the excess of events from recoil electrons, possibly giving an insight into new area beyond the Standard Model (SM) of particle physics. We try to explain this excess by considering effective interactions between the sterile neutrinos and the SM particles. In this paper, we present an effective model based on one-particle-irreducible interaction vertices at low energies that are induced from the SM gauge symmetric four-fermion operators at high energies. The effective interaction strength is constrained by the SM precision measurements, astrophysical and cosmological observations. We introduce a novel effective electromagnetic interaction between sterile neutrinos and SM neutrinos, which can successfully explain the XENON1T event rate through inelastic scattering of the sterile neutrino dark matter from Xenon electrons. We find that sterile neutrinos with masses around 90 keV and specific effective coupling can fit well with the XENON1T data where the best fit points preserving DM constraints and possibly describe the anomalies in other experiments.

Keywords: Beyond Standard Model, Cosmology of Theories beyond the SM, Effective Field Theories, Neutrino Physics

Footnotes

ArXiv ePrint: 2008.05029

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Contributor Information

Soroush Shakeri, Email: s.shakeri@iut.ac.ir.

Fazlollah Hajkarim, Email: hajkarim@th.physik.uni-frankfurt.de.

She-Sheng Xue, Email: xue@icra.it.

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Shedding new light on sterile neutrinos from XENON1T experiment

Soroush Shakeri

Fazlollah Hajkarim

She-Sheng Xue

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PERMALINK

Shedding new light on sterile neutrinos from XENON1T experiment

Soroush Shakeri

Fazlollah Hajkarim

She-Sheng Xue

Abstract

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