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Title: The PAMELA and ATIC Signals From Kaluza-Klein Dark Matter

Abstract

In this letter, we study the possibility that Kaluza-Klein dark matter in a model with one universal extra dimension is responsible for the recent observations of the PAMELA and ATIC experiments. In this model, the dark matter particles annihilate largely to charged leptons, which enables them to produce a spectrum of cosmic ray electrons and positrons consistent with the PAMELA and ATIC measurements. To normalize to the observed signal, however, large boost factors ({approx}10{sup 3}) are required. Despite these large boost factors and significant annihilation to hadronic modes (35%), we find that the constraints from cosmic ray antiproton measurements can be satisfied. Relic abundance considerations in this model force us to consider a rather specific range of masses (approximately 600-900 GeV) which is very similar to the range required to generate the ATIC spectral feature. The results presented here can also be used as a benchmark for model-independent constraints on dark matter annihilation to hadronic modes.

Authors:
; ; ;
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
951123
Report Number(s):
FERMILAB-PUB-09-033-A
arXiv eprint number arXiv:0902.0593; TRN: US0902145
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ABUNDANCE; ANNIHILATION; ANTIPROTONS; BENCHMARKS; DIMENSIONS; ELECTRONS; LEPTONS; NONLUMINOUS MATTER; POSITRONS; Phenomenology-HEP

Citation Formats

Hooper, Dan, /Fermilab /Chicago U., Astron. Astrophys. Ctr., Zurek, Kathryn M., and /Fermilab /Michigan U. The PAMELA and ATIC Signals From Kaluza-Klein Dark Matter. United States: N. p., 2009. Web. doi:10.1103/PhysRevD.79.103529.
Hooper, Dan, /Fermilab /Chicago U., Astron. Astrophys. Ctr., Zurek, Kathryn M., & /Fermilab /Michigan U. The PAMELA and ATIC Signals From Kaluza-Klein Dark Matter. United States. doi:10.1103/PhysRevD.79.103529.
Hooper, Dan, /Fermilab /Chicago U., Astron. Astrophys. Ctr., Zurek, Kathryn M., and /Fermilab /Michigan U. Sun . "The PAMELA and ATIC Signals From Kaluza-Klein Dark Matter". United States. doi:10.1103/PhysRevD.79.103529. https://www.osti.gov/servlets/purl/951123.
@article{osti_951123,
title = {The PAMELA and ATIC Signals From Kaluza-Klein Dark Matter},
author = {Hooper, Dan and /Fermilab /Chicago U., Astron. Astrophys. Ctr. and Zurek, Kathryn M. and /Fermilab /Michigan U.},
abstractNote = {In this letter, we study the possibility that Kaluza-Klein dark matter in a model with one universal extra dimension is responsible for the recent observations of the PAMELA and ATIC experiments. In this model, the dark matter particles annihilate largely to charged leptons, which enables them to produce a spectrum of cosmic ray electrons and positrons consistent with the PAMELA and ATIC measurements. To normalize to the observed signal, however, large boost factors ({approx}10{sup 3}) are required. Despite these large boost factors and significant annihilation to hadronic modes (35%), we find that the constraints from cosmic ray antiproton measurements can be satisfied. Relic abundance considerations in this model force us to consider a rather specific range of masses (approximately 600-900 GeV) which is very similar to the range required to generate the ATIC spectral feature. The results presented here can also be used as a benchmark for model-independent constraints on dark matter annihilation to hadronic modes.},
doi = {10.1103/PhysRevD.79.103529},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Feb 01 00:00:00 EST 2009},
month = {Sun Feb 01 00:00:00 EST 2009}
}