Article (Scientific journals)
Effects of dark atom excitations
Cudell, Jean-René; Khlopov, Maxim; Wallemacq, Quentin
2014In Modern Physics Letters A, 29
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Keywords :
Dark matter; Dark atoms; Indirect detection
Abstract :
[en] New stable quarks and charged leptons may exist and be hidden from detection, as they are bound by Coulomb interaction in neutral dark atoms of composite dark matter. This possibility leads to fundamentally new types of indirect effects related to the excitation of such dark atoms followed by their electromagnetic de-excitation. Stable -2 charged particles, bound to primordial helium in O-helium (OHe) atoms, represent the simplest model of dark atoms. Here we consider the structure of OHe atomic levels which is a necessary input for the indirect tests of such composite dark matter scenarios, and we give the spectrum of electromagnetic transitions from the levels excited in OHe collisions.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Cudell, Jean-René  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Inter. fondamentales en physique et astrophysique (IFPA)
Khlopov, Maxim;  University Paris Diderot - Paris 7 > APC Laboratory
Wallemacq, Quentin ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Inter. fondamentales en physique et astrophysique (IFPA)
Language :
English
Title :
Effects of dark atom excitations
Publication date :
2014
Journal title :
Modern Physics Letters A
ISSN :
0217-7323
Publisher :
World Scientific Publishing Company, Singapore, Singapore
Volume :
29
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 10 December 2014

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