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Cascade events at IceCube + DeepCore as a definitive constraint on the dark matter interpretation of the PAMELA and Fermi anomalies

Mandal, Sourav K. and Buckley, Matthew R. and Freese, Katherine and Spolyar, Douglas and Murayama, Hitoshi (2010) Cascade events at IceCube + DeepCore as a definitive constraint on the dark matter interpretation of the PAMELA and Fermi anomalies. Physical Review D, 81 (4). Art. No. 043508. ISSN 2470-0010. https://resolver.caltech.edu/CaltechAUTHORS:20100415-100122638

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Abstract

Dark matter decaying or annihilating into μ^+μ^- or τ^+τ^- has been proposed as an explanation for the e^± anomalies reported by PAMELA and Fermi. Recent analyses show that IceCube, supplemented by DeepCore, will be able to significantly constrain the parameter space of decays to μ^+μ^-, and rule out decays to τ^+τ^- and annihilations to μ^+μ^- in less than five years of running. These analyses rely on measuring tracklike events in IceCube + DeepCore from down-going ν_μ. In this paper we show that by instead measuring cascade events, which are induced by all neutrino flavors, IceCube + DeepCore can rule out decays to μ^+μ^- in only three years of running, and rule out decays to τ^+τ^- and annihilation to μ^+μ^- in only one year of running. These constraints are highly robust to the choice of dark matter halo profile and independent of dark matter-nucleon crosssection.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRevD.81.043508DOIUNSPECIFIED
http://prd.aps.org/abstract/PRD/v81/i4/e043508PublisherUNSPECIFIED
Additional Information:© 2010 The American Physical Society. Received 18 December 2009; published 2 February 2010. The authors would like to thank D. Grant, D. J. Koskinen, and I. Taboada for answering questions about DeepCore. S. K. M. is supported by World Premier International Research Center Initiative (WPI Initiative), MEXT, Japan, and would also like to thank G. Lambard for useful discussions. M. R. B. is supported by the U.S. Department of Energy, under Grant No. DE-FG03-92- ER40701. K. F. is supported by the U.S. Department of Energy and MCTP via the University of Michigan. D. S. is supported by NSF Grant No. AST-0507117 and GAANN (D. S.). H. M. is supported in part by World Premier International Research Center Initiative (WPI Initiative), MEXT, Japan, in part by the U.S. DOE under Contract No. DE-AC03-76SF00098, and in part by the NSF under Grant No. PHY-04-57315.
Group:Caltech Theory
Funders:
Funding AgencyGrant Number
Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan UNSPECIFIED
U.S. Department of Energy DE-FG03-92ER40701
U.S. Department of Energy DE-AC03-76SF00098
Michigan Center for Theoretical Physics (MCTP) via the University of Michigan UNSPECIFIED
NSFAST-0507117
NSFPHY-04-57315
Graduate Assistance In Areas Of National Need (GAANN) UNSPECIFIED
Issue or Number:4
Classification Code:PACS: 95.35.+d, 14.60.Pq, 98.80.Cq.
Record Number:CaltechAUTHORS:20100415-100122638
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20100415-100122638
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:17988
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:04 May 2010 01:41
Last Modified:03 Oct 2019 01:36

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