Hunting for heavy winos in the Galactic Center

Lucia Rinchiuso, Nicholas L. Rodd, Ian Moult, Emmanuel Moulin, Matthew Baumgart, Timothy Cohen, Tracy R. Slatyer, Iain W. Stewart, Varun Vaidya

Research output: Contribution to journalArticle

2 Citations (Scopus)

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° and 4° 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.

Original languageEnglish (US)
Article number123014
JournalPhysical Review D
Volume98
Issue number12
DOIs
StatePublished - Dec 15 2018

Fingerprint

dark matter
photons
probes
refining
astrophysics
energy spectra
gamma rays
telescopes
causes
predictions
approximation
simulation
energy

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Rinchiuso, L., Rodd, N. L., Moult, I., Moulin, E., Baumgart, M., Cohen, T., ... Vaidya, V. (2018). Hunting for heavy winos in the Galactic Center. Physical Review D, 98(12), [123014]. https://doi.org/10.1103/PhysRevD.98.123014

Hunting for heavy winos in the Galactic Center. / Rinchiuso, Lucia; Rodd, Nicholas L.; Moult, Ian; Moulin, Emmanuel; Baumgart, Matthew; Cohen, Timothy; Slatyer, Tracy R.; Stewart, Iain W.; Vaidya, Varun.

In: Physical Review D, Vol. 98, No. 12, 123014, 15.12.2018.

Research output: Contribution to journalArticle

Rinchiuso, L, Rodd, NL, Moult, I, Moulin, E, Baumgart, M, Cohen, T, Slatyer, TR, Stewart, IW & Vaidya, V 2018, 'Hunting for heavy winos in the Galactic Center', Physical Review D, vol. 98, no. 12, 123014. https://doi.org/10.1103/PhysRevD.98.123014
Rinchiuso L, Rodd NL, Moult I, Moulin E, Baumgart M, Cohen T et al. Hunting for heavy winos in the Galactic Center. Physical Review D. 2018 Dec 15;98(12). 123014. https://doi.org/10.1103/PhysRevD.98.123014
Rinchiuso, Lucia ; Rodd, Nicholas L. ; Moult, Ian ; Moulin, Emmanuel ; Baumgart, Matthew ; Cohen, Timothy ; Slatyer, Tracy R. ; Stewart, Iain W. ; Vaidya, Varun. / Hunting for heavy winos in the Galactic Center. In: Physical Review D. 2018 ; Vol. 98, No. 12.
@article{4e77b62c91e6430195f87967e2dd0f1d,
title = "Hunting for heavy winos in the Galactic Center",
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° and 4° 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.",
author = "Lucia Rinchiuso and Rodd, {Nicholas L.} and Ian Moult and Emmanuel Moulin and Matthew Baumgart and Timothy Cohen and Slatyer, {Tracy R.} and Stewart, {Iain W.} and Varun Vaidya",
year = "2018",
month = "12",
day = "15",
doi = "10.1103/PhysRevD.98.123014",
language = "English (US)",
volume = "98",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "American Physical Society",
number = "12",

}

TY - JOUR

T1 - Hunting for heavy winos in the Galactic Center

AU - Rinchiuso, Lucia

AU - Rodd, Nicholas L.

AU - Moult, Ian

AU - Moulin, Emmanuel

AU - Baumgart, Matthew

AU - Cohen, Timothy

AU - Slatyer, Tracy R.

AU - Stewart, Iain W.

AU - Vaidya, Varun

PY - 2018/12/15

Y1 - 2018/12/15

N2 - 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° and 4° 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.

AB - 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° and 4° 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.

UR - http://www.scopus.com/inward/record.url?scp=85059399346&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85059399346&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.98.123014

DO - 10.1103/PhysRevD.98.123014

M3 - Article

AN - SCOPUS:85059399346

VL - 98

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 12

M1 - 123014

ER -