Subjects: Physics >> General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. submitted time 2017-09-17
Abstract： #3;b matrix element of four-quark operator relevant to its lifetime is rean-alyzed by QCD sum rule. The new ingredients introduced are that (1)more vacuum condensates are considered; (2) different quark-hadron dual-ity is adopted; and (3) the possible deviation from the vacuum saturation assumption for the four quark condensates is considered. With #20;1 = 4 the related hadronic parameter r is calculated to be (3.6 ± 0.9), and the lifetimeratio #28; (#3;b)/#28; (B0) = (0.83 ± 0.04), which is consistent with the experimental data.
Peer Review Status:
Awaiting Review
Subjects: Physics >> General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. submitted time 2017-09-17
Abstract： The three active light neutrinos are used to explain the neutrino oscillations.The inherently bi-large mixing neutrino mass matrix and the Fritzsch type,bi-small mixing charged lepton mass matrix are assumed. By requiring the maximal #23;μ −#23;#28; mixing for the atmospheric neutrino problem and the mass-squared difference approperiate for the almost maximal mixing solution to the solar neutrino problem, the following quantities are predicted: the #23;e−#23;μ mixing, Ve3, CP violation in neutrino oscillations, and the effective electron-neutrino mass relevant to neutrinoless double beta decays.
Peer Review Status:Awaiting Review
Subjects: Physics >> General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. submitted time 2017-09-17
Abstract： In supersymmetric models with explicit breaking of R-parity the lightest su-persymmetric particle (LSP) may be the lightest stau, ˜#28;1. Such a scenario would provide a clear sign of R-parity violating SUSY, although its phe-nomenology may resemble that of a charged Higgs boson, H±. We discuss various ways of distinguishing a LSP ˜#28;1 from H± at future colliders, and ad- dress the case of ˜#28;1 mimicking the signal for H±. As an example we suggest that the recent L3 signal for H+H− → qq′qq′ and H+H− → qq′#28;#23;#28; could be more easily explained by a LSP ˜#28;1.
Peer Review Status:Awaiting Review
Subjects: Physics >> General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. submitted time 2017-09-17
Abstract： The muon- and tau-neutrinos with the mass in the keV range, which are allowed in a low reheating temperature cosmology, can compose the warm dark matter of the universe. A model of four light neutrinos including the keV scale #23;μ and #23;#28; is studied, which combines the seesaw mechanism and the Abelian flavor symmetry. The atmospheric neutrino anomaly is due to the #23;μ − #23;#28; oscillation. The solar neutrino problem is answered by the oscil-lation into the light sterile neutrino, where the SMA, LMA, and LOW-QVO solutions can be accommodated in our scenario.
Peer Review Status:Awaiting Review
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