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Dark matter constraints from a joint analysis of dwarf Spheroidal galaxy observations with VERITAS

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Research output: Contribution to a Journal (Peer & Non Peer) › Article › peer-review

116 Citations (Scopus)

Abstract

We present constraints on the annihilation cross section of weakly interacting massive particles dark matter based on the joint statistical analysis of four dwarf galaxies with VERITAS. These results are derived from an optimized photon weighting statistical technique that improves on standard imaging atmospheric Cherenkov telescope (IACT) analyses by utilizing the spectral and spatial properties of individual photon events. We report on the results of similar to 230 hours of observations of five dwarf galaxies and the joint statistical analysis of four of the dwarf galaxies. We find no evidence of gamma-ray emission from any individual dwarf nor in the joint analysis. The derived upper limit on the dark matter annihilation cross section from the joint analysis is 1.35 x 10(-23) cm(3) s(-1) at 1 TeV for the bottom quark (b (b) over bar) final state, 2.85 x 10(-24) cm(3) s(-1) at 1 TeV for the tau lepton (tau+tau(-)) final state and 1.32 x 10-25 cm(3) s(-1) at 1 TeV for the gauge boson (gamma gamma) final state.
Original languageEnglish (Ireland)
Article number082001
Number of pages0
JournalPhysical Review D
Volume95
Issue number8
DOIs
Publication statusPublished - 1 Apr 2017

Authors (Note for portal: view the doc link for the full list of authors)

  • Authors
  • Archambault, S,Archer, A,Benbow, W,Bird, R,Bourbeau, E,Brantseg, T,Buchovecky, M,Buckley, JH,Bugaev, V,Byrum, K,Cerruti, M,Christiansen, JL,Connolly, MP,Cui, W,Daniel, MK,Feng, Q,Finley, JP,Fleischhack, H,Fortson, L,Furniss, A,Geringer-Sameth, A,Griffin, S,Grube, J,Hutten, M,Hakansson, N,Hanna, D,Hervet, O,Holder, J,Hughes, G,Hummensky, B,Johnson, CA,Kaaret, P,Kar, P,Kelley-Hoskins, N,Kertzman, M,Kieda, D,Koushiappas, S,Krause, M,Krennrich, F,Lang, MJ,Lin, TTY,McArthur, S,Moriarty, P,Mukherjee, R,Nieto, D,O'Brien, S,Ong, RA,Otte, AN,Park, N,Pohl, M,Popkow, A,Pueschel, E,Quinn, J,Ragan, K,Reynolds, PT,Richards, GT,Roache, E,Rulten, C,Sadeh, I,Santander, M,Sembroski, GH,Shahinyan, K,Smith, AW,Staszak, D,Telezhinsky, I,Trepanier, S,Tucci, JV,Tyler, J,Wakely, SP,Weinstein, A,Wilcox, P,William
  • Archambault, S;Archer, A;Benbow, W;Bird, R;Bourbeau, E;Brantseg, T;Buchovecky, M;Buckley, JH;Bugaev, V;Byrum, K;Cerruti, M;Christiansen, JL;Connolly, MP;Cui, W;Daniel, MK;Feng, Q;Finley, JP;Fleischhack, H;Fortson, L;Furniss, A;Geringer-Sameth, A;Griffin, S;Grube, J;Hutten, M;Hakansson, N;Hanna, D;Hervet, O;Holder, J;Hughes, G;Hummensky, B;Johnson, CA;Kaaret, P;Kar, P;Kelley-Hoskins, N;Kertzman, M;Kieda, D;Koushiappas, S;Krause, M;Krennrich, F;Lang, MJ;Lin, TTY;McArthur, S;Moriarty, P;Mukherjee, R;Nieto, D;O'Brien, S;Ong, RA;Otte, AN;Park, N;Pohl, M;Popkow, A;Pueschel, E;Quinn, J;Ragan, K;Reynolds, PT;Richards, GT;Roache, E;Rulten, C;Sadeh, I;Santander, M;Sembroski, GH;Shahinyan, K;Smith, AW;Staszak, D;Telezhinsky, I;Trepanier, S;Tucci, JV;Tyler, J;Wakely, SP;Weinstein, A;Wilcox, P;Williams, DA;Zitzer, B

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