7,754 research outputs found
Higgsino-like Dark Matter From Sneutrino Late Decays
We consider Higgsino-like dark matter (DM) in the Minimal Supersymmetric
Standard Model (MSSM) with additional right-handed neutrino chiral superfields,
and propose a new non-thermal way of generating the right amount of relic DM
via sneutrino late decays. Due to the large DM annihilation cross-section,
decays must occur at lower temperatures than the freeze-out temperature , implying a mostly right-handed lightest
sneutrino with very small Yukawa interactions. In that context, the right
amount of Higgsino-like DM relic density can be accounted for if sneutrinos are
produced via thermal freeze-in in the early Universe.Comment: 10 pages, 2 figures. Final version PL
The proof of three power-exponential inequalities
In this paper we prove three power-exponential inequalities for positive real
numbers. In particular, we conclude that this proofs give affirmatively answers
to three, until now, open problems (conjectures~4.4, 2.1 and 2.2) posed by
C{\^i}rtoaje in the following two works:
"{\it J. Inequal. Pure Appl. Math.} 10, Article 21, 2009" and "{\it J.
Nonlinear Sci. Appl.} 4:2:130-137, 2011". Moreover, we present a new proof of
the inequality for all positive real numbers
and and . In addition, three new conjectures are presented.Comment: 9 page
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