New gamma ray signal from gravitationally boosted neutralinos at the galactic center

Autor:	Cannoni, M., Gomez, M. E., Perez-Garcia, M. A., Vergados, J. D.
Rok vydání:	2012
Předmět:	High Energy Physics - Phenomenology Astrophysics - Galaxy Astrophysics General Relativity and Quantum Cosmology
Zdroj:	Phys. Rev. D 85, 115015 (2012)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevD.85.115015
Popis:	We discuss on the possibility that colliding dark matter particles in the form of neutralinos may be gravitationally boosted near the super-massive black hole at the galactic center so that they can have enough collision energy to annihilate into a stau pair. Since in some phenomenologically favored supersymmetric models the mass splitting between the neutralino and the lightest stau, one of the two scalar superpartners of the tau lepton, is a few GeVs, this channel may be allowed. In addition, staus can only decay into a tau lepton and another neutralino. We calculate the gamma-ray spectrum and flux generated by the tau pair discussing the observability of the obtained features. Comment: 5 pages, 3 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1205.1709 Zobrazit plný text záznamu View this record from Arxiv