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Limits on a muon flux from Kaluza-Klein dark matter annihilations in the Sun from the IceCube 22-string detector (open access)

Limits on a muon flux from Kaluza-Klein dark matter annihilations in the Sun from the IceCube 22-string detector

A search for muon neutrinos from Kaluza-Klein dark matter annihilations in the Sun has been performed with the 22-string configuration of the IceCube neutrino detector using data collected in 104.3 days of live-time in 2007. No excess over the expected atmospheric background has been observed. Upper limits have been obtained on the annihilation rate of captured lightest Kaluza-Klein particle (LKP) WIMPs in the Sun and converted to limits on the LKP-proton cross-sections for LKP masses in the range 250 - 3000 GeV. These results are the most stringent limits to date on LKP annihilation in the Sun.
Date: October 23, 2009
Creator: Collaboration, IceCube; Abbasi, R. & al., et
System: The UNT Digital Library
Neutral Pion Production in Au+Au Collisions at sqrt sNN = 200 GeV (open access)

Neutral Pion Production in Au+Au Collisions at sqrt sNN = 200 GeV

The results of mid-rapidity (0 < y < 0.8) neutral pion spectra over an extended transverse momentum range (1 < p{sub T} < 12 GeV/c) in {radical}s{sub NN} = 200 GeV Au+Au collisions, measured by the STAR experiment, are presented. The neutral pions are reconstructed from photons measured either by the STAR Barrel Electro-Magnetic Calorimeter (BEMC) or by the Time Projection Chamber (TPC) via tracking of conversion electron-positron pairs. Our measurements are compared to previously published {pi}{sup {+-}} and {pi}{sup 0} results. The nuclear modification factors R{sub CP} and R{sub AA} of {pi}{sup 0} are also presented as a function of p{sub T}. In the most central Au+Au collisions, the binary collision scaled {pi}{sup 0} yield at high p{sub T} is suppressed by a factor of about 5 compared to the expectation from the yield of p+p collisions. Such a large suppression is in agreement with previous observations for light quark mesons and is consistent with the scenario that partons suffer considerable energy loss in the dense medium formed in central nucleus-nucleus collisions at RHIC.
Date: October 23, 2009
Creator: STAR Collaboration
System: The UNT Digital Library
Solubility of 5-(2-Chlorophenyl)-7-nitro-1,3-dihydro-1,4-benzodiazepin-2-one, 7-Chloro-1-methyl-5-phenyl-3H-1,4-benzodiazepin-2-one, and 6-(2,3-Dichlorophenyl)-1,2,4-triazine-3,5-diamine in the Mixtures of Poly(ethylene glycol) 600, Ethanol, and Water at a Temperature of 298.2 K (open access)

Solubility of 5-(2-Chlorophenyl)-7-nitro-1,3-dihydro-1,4-benzodiazepin-2-one, 7-Chloro-1-methyl-5-phenyl-3H-1,4-benzodiazepin-2-one, and 6-(2,3-Dichlorophenyl)-1,2,4-triazine-3,5-diamine in the Mixtures of Poly(ethylene glycol) 600, Ethanol, and Water at a Temperature of 298.2 K

Article on the solubility of 5-(2-chlorophenyl)-7-nitro-1, 3-dihydro-1, 4-benzodiazepin-2-one, 7-chloro-1-methyl-5-phenyl-3H-1, 4-benzodiazepin-2-one, and 6-(2,3-dichlorophenyl)-1, 2, 4,-triazine-3, 5-diamine in the mixtures of poly(ethylene glycol) 600, ethanol, and water at temperature of 298.2 K.
Date: October 23, 2009
Creator: Soltanpour, Shahla; Acree, William E. (William Eugene) & Jouyban, Abolghasem
System: The UNT Digital Library