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Some potential problems of OHe composite dark matter
Jean-René Cudell, Maxim Khlopov, Quentin Wallemacq
Among composite-dark-matter scenarios, one of the simplest and most predictive is that of O-helium (OHe) dark atoms, in which a lepton-like doubly charged particle O is bound with…
Dark antiatoms can explain DAMA
Quentin Wallemacq, Jean-René Cudell
We show that the existence of a sub-dominant form of dark matter, made of dark antiatoms of mass and size of the order of 1 TeV and 30 fm respectively, can explain the results of d…
Dark atoms and the positron-annihilation-line excess in the galactic bulge
Jean-René Cudell, Maxim Yu. Khlopov, Quentin Wallemacq
It was recently proposed that stable particles of charge , , can exist and constitute dark matter after they bind with primordial helium in O-helium (OHe) atoms. We stu…