Results from the Antarctic Muon and Neutrino Detector Array

Abstract. We perform an exhaustive study of the role neutrino telescopes could play in the discovery and exploration of supersymmetric extensions of the Standard Model with a long-lived stau next-to-lightest superparticle. These staus are produced in pairs by cosmic neutrino interactions in the Earth matter. We show that the background of stau events to the standard muon signal is negligible and plays no role in the determination of the cosmic neutrino flux. On the other hand, one can expect up to 50 pair events per year in a cubic kilometer detector such as IceCube, if the superpartner mass spectrum and the high-energy cosmic neutrino flux are close to experimental bounds.

Section: Jcap07(2006)005mentioning

confidence: 99%

Section: Detection Rate At Neutrino Telescopesmentioning

confidence: 99%

Long-lived staus at neutrino telescopes

Ahlers

Kersten²,

Ringwald³

2006

“…To avoid FCNC constraints, we assumed the squark soft supersymmetry breaking terms of the first two generations to be equal. AS In the right panel, we compare the sensitivity of GAPS/balloon with that of the km 3 -sized detector IceCube, looking for muons produced by neutrinos originating from neutralino pair annihilations in the core of the Sun [84,85]. Again, the two detection techniques are somewhat complementary, and a few supersymmetric models might give a signal at both facilities.…”

Section: Comparing D Detection To Other Direct/indirect Wimp Searchesmentioning

confidence: 99%

Low energy antideuterons: shedding light on dark matter

Baer

Profumo

2005

104

130

Abstract. Low energy antideuterons suffer a very low secondary and tertiary astrophysical background, while they can be abundantly synthesized in dark matter pair annihilations, therefore providing a privileged indirect dark matter detection technique. The recent publication of the first upper limit on the low energy antideuteron flux by the BESS Collaboration, a new evaluation of the standard astrophysical background, and remarkable progress in the development of a dedicated experiment, GAPS, motivate a new and accurate analysis of the antideuteron flux expected in particle dark matter models. To this extent, we consider here supersymmetric, universal extra-dimensional (UED) Kaluza-Klein and warped extra-dimensional dark matter models, and assess both the prospects for antideuteron detection and the various related sources of uncertainties. The GAPS experiment, even in a preliminary balloon-borne set-up, will explore many supersymmetric configurations, and, eventually, in its final space-borne configuration, will be sensitive to primary antideuterons over the whole cosmologically allowed UED parameter space, providing a search technique which is highly complementary with other direct and indirect dark matter detection experiments.

“…Brane-bulk couplings are flavor blind, and consequently the exchange of the KK gravitons is unaffected by the electron, muon or tau nature of the DSN (anti-) neutrinos, except for corrections proportional to the squared mass splittings divided by s, which are negligible (O(10 −27 )). 4 A word of caution is needed here regarding the extra-dimensional scenario, which is an effective theory valid for s ∼ M 2 S . At some energy scale s ∼ M 2 S , this theory is supposed to match a more fundamental theory of quantum gravity.…”

Section: Neutrino Annihilation In Extra-dimensional Modelsmentioning

confidence: 99%

“…Experimental high-energy neutrino astronomy is developing very rapidly. There exist a number of experiments (AMANDA II [1], RICE [2], ANITA [3], Icecube [4], ANTARES [5]) that are currently analyzing or starting to take data. In the future there are planned projects (ARIANNA [6], AURA, NEMO, ACORNE) that will benefit from improved detection techniques and larger effective detection volumes.…”

Section: Introductionmentioning

confidence: 99%

Ultrahigh-energy neutrino flux as a probe of large extra dimensions

Lykken

Mena

Razzaque

2007

Abstract. A suppression in the spectrum of ultrahigh-energy (UHE, > ∼ 10 18 eV) neutrinos will be present in extra-dimensional scenarios, due to enhanced neutrinoantineutrino annihilation processes with the supernova relic neutrinos. In the n > 4 scenario, being n the number of extra dimensions, neutrinos can not be responsible for the highest energy events observed in the UHE cosmic ray spectrum. A direct implication of these extra-dimensional interactions would be the absence of UHE neutrinos in ongoing and future neutrino telescopes.