Don't Mess with the NEST (open access)

Don't Mess with the NEST

NEST stands for Nuclear Emergency Support Team. The NEST Mission Statement as first established: (1) Conduct, direct, coordinate search and recovery operations for nuclear material, weapons or devices; and (2) Assist in identification and deactivation of Improvised Nuclear Devices (INDs) and Radiological Dispersal Devices (RDDs). Then in 1980 a very sophisticated improvised explosive device was found at Harvey's Casino at Lake Tahoe, Nevada. The FBI and Bomb Squads were unprepared and it detonated. As a result the additional phrase 'and Sophisticated Improvised Explosive Devices (SIEDs)' was added to the Mission Statement.
Date: March 15, 2012
Creator: Larson, M
System: The UNT Digital Library
Ultra Low Density Amorphous Shape Memory polymer Foams. (open access)

Ultra Low Density Amorphous Shape Memory polymer Foams.

None
Date: March 15, 2012
Creator: Singhal, P.; Small, W.; Rodriguez, J. N.; Letts, S.; Maitland, D. J. & Wilson, T. S.
System: The UNT Digital Library
Limit of detection of Bacillus anthracis in complex soil and air samples using next-generation sequencing (open access)

Limit of detection of Bacillus anthracis in complex soil and air samples using next-generation sequencing

None
Date: March 15, 2012
Creator: Be, Nicholas A.; Thissen, James B.; Gardner, Shea; McLoughlin, Kevin; Fofanov, Viacheslav; Koshinsky, Heather et al.
System: The UNT Digital Library
Constraints on the pMSSM from LAT Observations of Dwarf Spheroidal Galaxies (open access)

Constraints on the pMSSM from LAT Observations of Dwarf Spheroidal Galaxies

We examine the ability for the Large Area Telescope (LAT) to constrain Minimal Supersymmetric Standard Model (MSSM) dark matter through a combined analysis of Milky Way dwarf spheroidal galaxies. We examine the Lightest Supersymmetric Particles (LSPs) for a set of {approx}71k experimentally valid supersymmetric models derived from the phenomenological-MSSM (pMSSM). We find that none of these models can be excluded at 95% confidence by the current analysis; nevertheless, many lie within the predicted reach of future LAT analyses. With two years of data, we find that the LAT is currently most sensitive to light LSPs (mLSP < 50 GeV) annihilating into {tau}-pairs and heavier LSPs annihilating into b{bar b}. Additionally, we find that future LAT analyses will be able to probe some LSPs that form a sub-dominant component of dark matter. We directly compare the LAT results to direct detection experiments and show the complementarity of these search methods.
Date: March 15, 2012
Creator: Cotta, R. C.; Drlica-Wagner, A.; Murgia, S.; Bloom, E. D.; Hewett, J. L. & Rizzo, T. G.
System: The UNT Digital Library
Testing the OPERA Superluminal Neutrino Anomaly at the LHC (open access)

Testing the OPERA Superluminal Neutrino Anomaly at the LHC

The OPERA collaboration has reported the observation of superluminal muon neutrinos, whose speed v{sub {nu}} exceeds that of light c, with (v{sub {nu}}-c)/c {approx_equal} 2.5 x 10{sup -5}. In a recent work, Cohen and Glashow (CG) have refuted this claim by noting that such neutrinos will lose energy, by pair-emission of particles, at unacceptable rates. Following the CG arguments, we point out that pair-emissions consistent with the OPERA anomaly can lead to detectable signals for neutrinos originating from decays of highly boosted top quarks at the LHC, allowing an independent test of the superluminal neutrino hypothesis.
Date: March 15, 2012
Creator: Davoudiasl, Hooman; /Brookhaven & Rizzo, Thomas G.
System: The UNT Digital Library