@article{8f45e928fc3a4e6a8b63eb16f84c6a74,
title = "Constraints on metastable superheavy dark matter coupled to sterile neutrinos with the Pierre Auger Observatory",
abstract = "Dark matter particles could be superheavy, provided their lifetime is much longer than the age of the Universe. Using the sensitivity of the Pierre Auger Observatory to ultrahigh energy neutrinos and photons, we constrain a specific extension of the Standard Model of particle physics that meets the lifetime requirement for a superheavy particle by coupling it to a sector of ultralight sterile neutrinos. Our results show that, for a typical dark coupling constant of 0.1, the mixing angle θm between active and sterile neutrinos must satisfy, roughly, θm≲1.5×10-6(MX/109 GeV)-2 for a mass MX of the dark-matter particle between 108 GeV and 1011 GeV.",
author = "\{(The Pierre Auger Collaboration)\} and \{Abdul Halim\}, A. and P. Abreu and M. Aglietta and I. Allekotte and \{Almeida Cheminant\}, K. and A. Almela and R. Aloisio and J. Alvarez-Mu{\~n}iz and \{Ammerman Yebra\}, J. and Anastasi, \{G. A.\} and L. Anchordoqui and B. Andrada and S. Andringa and L. Apollonio and C. Aramo and \{Ara{\'u}jo Ferreira\}, \{P. R.\} and E. Arnone and \{Arteaga Vel{\'a}zquez\}, \{J. C.\} and P. Assis and G. Avila and E. Avocone and A. Bakalova and F. Barbato and \{Bartz Mocellin\}, A. and Bellido, \{J. A.\} and C. Berat and Bertaina, \{M. E.\} and G. Bhatta and M. Bianciotto and Biermann, \{P. L.\} and V. Binet and K. Bismark and T. Bister and J. Biteau and J. Blazek and C. Bleve and J. Bl{\"u}mer and M. Boh{\'a}{\v c}ov{\'a} and D. Boncioli and C. Bonifazi and \{Bonneau Arbeletche\}, L. and N. Borodai and J. Brack and \{Brichetto Orchera\}, \{P. G.\} and Briechle, \{F. L.\} and A. Bueno and S. Buitink and M. Buscemi and M. B{\"u}sken and C. Ventura",
note = "Publisher Copyright: {\textcopyright} 2024 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the {"}https://creativecommons.org/licenses/by/4.0/{"}Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.",
year = "2024",
month = apr,
day = "15",
doi = "10.1103/PhysRevD.109.L081101",
language = "American English",
volume = "109",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "American Physical Society",
number = "8",
}