Natural $X$-ray Lines from the Low Scale Supersymmetry Breaking

Abstract

In the supersymmetric models with low scale supersymmetry (SUSY) breaking where the gravitino mass is around keV, we show that the 3.5 keV $X-$ray lines can be explained naturally through several different mechanisms: (I) A keV scale dark gaugino plays the role of sterile neutrino in the presence of bilinear $R-$partiy violation. Because the light dark gaugino obtains Majorana mass only via gravity mediation, it is a decaying warm dark matter (DM) candidate; (II) Compressed cold DM states, whose mass degeneracy is broken by gavity mediated SUSY breaking, emit such a line via the heavier one decay into the lighter one plus photon(s). A highly supersymmetric dark sector may readily provide such kind of system; (III) Light axino, whose mass again is around the gravitino mass, decays to neutrino plus gamma in the $R-$partiy violating SUSY. Moreover, we comment on dark radiation from dark gaugino.

arXiv commentJournal version

References in corpus (17)

• Dark Matter Results from 225 Live Days of XENON100 Data
• R-parity violating supersymmetry
• The Next-to-Minimal Supersymmetric Standard Model
• Massive sterile neutrinos as warm Dark Matter
• The Stueckelberg $Z^{\prime }$ Extension with Kinetic Mixing and Milli-Charged Dark Matter From the Hidden Sector
• Exciting Dark Matter and the INTEGRAL/SPI 511 keV signal
• Axinos as Cold Dark Matter
• Kinetic Mixing as the Origin of Light Dark Scales
• The velocity function in the local environment from LCDM and LWDM constrained simulations
• The velocity width function of galaxies from the 40% ALFALFA survey: shedding light on the cold dark matter overabundance problem
• Axino Mass in Supergravity Models
• Dark matter and a new gauge boson through kinetic mixing
• Axino Mass
• Light Dark Matter from the U(1)_X Sector in the NMSSM with Gauge Mediation
• The ZZ' kinetic mixing in the light of the recent direct and indirect dark matter searches
• Axinos as Dark Matter Particles
• Higgs Boson Mass and Complex Snuetrino Dark Matter in the Supersymmetric Inverse Seesaw Models

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