RT Journal Article
T1 Spectral study of the HESS J1745-290 gamma-ray source as dark matter signal
A1 López Maroto, Antonio
A1 Ruiz Cembranos, José Alberto
A1 Gammaldi, Viviana
AB We study the main spectral features of the gamma-ray fluxes observed by the High Energy Stereoscopic System (HESS) from the J1745-290 Galactic Center source during the years 2004, 2005 and 2006. In particular, we show that these data are well fitted as the secondary gamma-rays photons generated from dark matter annihilating into Standard Model particles in combination with a simple power law background. We present explicit analyses for annihilation in a single standard model particle-antiparticle pair. In this case, the best fits are obtained for the u (u) over bar and d (d) over bar quark channels and for the W+W- and ZZ gauge bosons, with background spectral index compatible with the Fermi-Large Area Telescope (LAT) data from the same region. The fits return a heavy WIMP, with a mass above similar to 10 TeV, but well below the unitarity limit for thermal relic annihilation.
PB Iop Publishing Ltd
SN 1475-7516
YR 2013
FD 2013-04
LK https://hdl.handle.net/20.500.14352/33553
UL https://hdl.handle.net/20.500.14352/33553
LA eng
NO © 2013 IOP Publishing Ltd and Sissa Medialab srl.We thank Alvaro de la Cruz-Dombriz for useful comments. This work has been supported by MICINN (Spain) project numbers FIS 2008-01323, FIS2011-23000, FPA2011-27853-01 and Consolider Ingenio MULTIDARK  CSD2009-00064.
NO MICINN, Spain
DS Docta Complutense
RD 6 abr 2025