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Hunting for Heavy Winos in the Galactic Center
- Source :
- Phys.Rev.D, Phys.Rev.D, 2018, 98 (12), pp.123014. ⟨10.1103/PhysRevD.98.123014⟩, Physical Review D, Physical Review D, American Physical Society, 2018, 98 (12), pp.123014. ⟨10.1103/PhysRevD.98.123014⟩
- Publication Year :
- 2018
-
Abstract
- Observing gamma rays using ground-based atmospheric Cherenkov telescopes provides one of the only probes of heavy weakly interacting dark matter. A canonical target is the thermal wino, for which the strongest limits come from searches for photon lines from annihilations in the Galactic Center. Irreducible finite energy resolution effects motivate refining the prediction for a wino signal beyond the photon line approximation; recently, modern effective field theory techniques have been utilized to obtain a precise calculation of the full photon energy spectrum from wino annihilation. In this paper, we investigate the implications for a realistic mock H.E.S.S.-like line search. We emphasize the impact of including the non-trivial spectral shape, and we carefully treat the region of interest, presenting results for choices between $1^{\circ}$ and $4^{\circ}$ from the Galactic Center. Projected limits for wino masses from $1$-$70$ TeV are interpreted as a constraint on the wino annihilation rate, or alternatively as the minimum core size required such that the wino is not excluded. If there is a thermal wino, H.E.S.S. will be able to probe cores of several kpc, which would begin to cause tension between this dark matter candidate and astrophysical observations/simulations.<br />18 pages, 14 figures
- Subjects :
- dark matter: interaction
Astrophysics
showers: hadronic
7. Clean energy
01 natural sciences
thermal
High Energy Physics - Phenomenology (hep-ph)
effective field theory
WIMP
energy resolution: effect
HESS
Effective field theory
gamma ray: flux
High Energy Astrophysical Phenomena (astro-ph.HE)
Physics
Annihilation
Wino: heavy
Galactic Center
imaging
tension
photon: energy spectrum
High Energy Physics - Phenomenology
electron: background
soft collinear effective theory
numerical calculations: Monte Carlo
Astrophysics - High Energy Astrophysical Phenomena
cosmic radiation: flux
Astrophysics - Cosmology and Nongalactic Astrophysics
Cosmology and Nongalactic Astrophysics (astro-ph.CO)
Dark matter
FOS: Physical sciences
dark matter: density
Photon energy
Cherenkov counter: atmosphere
0103 physical sciences
finite energy
010306 general physics
Line search
electroweak interaction
010308 nuclear & particles physics
pi: decay
dark matter: annihilation
sensitivity
Galaxy
gamma ray: VHE
[PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph]
spectral
galaxy
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
statistical
Astrophysics and astroparticle physics
Subjects
Details
- Language :
- English
- ISSN :
- 15507998 and 15502368
- Database :
- OpenAIRE
- Journal :
- Phys.Rev.D, Phys.Rev.D, 2018, 98 (12), pp.123014. ⟨10.1103/PhysRevD.98.123014⟩, Physical Review D, Physical Review D, American Physical Society, 2018, 98 (12), pp.123014. ⟨10.1103/PhysRevD.98.123014⟩
- Accession number :
- edsair.doi.dedup.....e1459f29c34e015edf54d311af5c770e