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

Journal Article · Mon Feb 15 04:00:00 EST 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.043508· OSTI ID:21409262

Mandal, Sourav K ^[1]; Buckley, Matthew R ^[2]; Freese, Katherine ^[3]; Spolyar, Douglas ^[4]; Murayama, Hitoshi ^[1]

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1. Department of Physics, University of California, Berkeley, California 94720 (United States)
2. Department of Physics, California Institute of Technology, Pasadena, California 91125 (United States)
3. Michigan Center for Theoretical Physics, Physics Department, University of Michigan, Ann Arbor, Michigan 48109 (United States)
4. Center for Particle Astrophysics, Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States)

Dark matter decaying or annihilating into {mu}{sup +{mu}-} or {tau}{sup +{tau}-} has been proposed as an explanation for the e{sup {+-}}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 {mu}{sup +{mu}-}, and rule out decays to {tau}{sup +{tau}-} and annihilations to {mu}{sup +{mu}-} in less than five years of running. These analyses rely on measuring tracklike events in IceCube + DeepCore from down-going {nu}{sub {mu}.} 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 {mu}{sup +{mu}-} in only three years of running, and rule out decays to {tau}{sup +{tau}-} and annihilation to {mu}{sup +{mu}-} 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.

• OSTI ID: 21409262
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 4 Vol. 81; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
BARYONS
COMPOSITE MODELS
DECAY
ELEMENTARY PARTICLES
FERMIONS
FLAVOR MODEL
HADRONS
HEAVY LEPTONS
INTERACTIONS
LEPTONS
MASSLESS PARTICLES
MATHEMATICAL MODELS
MATTER
MUON NEUTRINOS
MUONS
MUONS MINUS
MUONS PLUS
NEUTRINOS
NONLUMINOUS MATTER
NUCLEONS
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE MODELS
QUARK MODEL
TAU PARTICLES