24,391 research outputs found
A simple modification of the maximal mixing scenario for three light neutrinos
We suggest a simple modification of the maximal mixing scenario (with
permutation symmetry) for three light neutrinos. Our neutrino mass matrix has
smaller permutation symmetry (), and
is consistent with all neutrino experiments except the Cl experiment.
The resulting mass eigenvalues for three neutrinos are for . Then these light neutrinos can account for
of the dark matter for . Our
model predicts the oscillation probability
in the range sensitive to the future experiments such as CHORUS and NOMAD.Comment: The title has been changed, to appear in Z. Phys.
Investigation of implantable multichannel biotelemetry systems Semiannual report, Sep. 1966 - Mar. 1967
Techniques for fabrication of multiple-channel physiologically implantable telemetry system
Effect of nuclear interactions of neutral kaons on CP asymmetry measurements
We examine the effect of the difference in nuclear interactions of
and mesons on the measurement of CP asymmetry for experiments at
colliders - charm and -meson factories. We find that this effect on
CP asymmetry can be as large as 0.3%, and therefore sufficiently significant in
interpreting measurements of CP asymmetry when neutral kaons are present in the
final state.Comment: accepted to PR
Enhancement of low-mass dileptons in SPS heavy-ion collisions: possible evidence for dropping rho meson mass in medium
Dilepton production in proton- and nucleus-induced reactions at SPS energies
is studied in the relativistic transport model using initial conditions
determined by the string dynamics from RQMD. It is found that both the CERES
and HELIOS-3 data for dilepton spectra in proton-nucleus reactions can be well
described by the conventional mechanism of Dalitz decay and direct vector meson
decay. However, to provide a quantitative explanation of the observed dilepton
spectra in central S+Au and S+W collisions requires contributions other than
these direct decays. Introducing a decrease of vector meson masses in hot dense
medium, we find that these heavy-ion data can also be satisfactorily explained.
We also give predictions for Pb+Au collisions at 160 GeV/nucleon using current
CERES mass resolution and acceptance.Comment: 8 pages, LaTeX, figures available from [email protected],
contribution to QM'96, to appear in the proceeding
Investigation if implantable multichannel biotelemetry systems Semiannual report, Sep. 1967 - Feb. 1968
Operation and maintenance of multichannel, physiologically implantable telemetering systems for biological measurement
Higher Dimensional Operators in the MSSM
The origin and the implications of higher dimensional effective operators in
4-dimensional theories are discussed in non-supersymmetric and supersymmetric
cases. Particular attention is paid to the role of general,
derivative-dependent field redefinitions which one can employ to obtain a
simpler form of the effective Lagrangian. An application is provided for the
Minimal Supersymmetric Standard Model extended with dimension-five R-parity
conserving operators, to identify the minimal irreducible set of such operators
after supersymmetry breaking. Among the physical consequences of this set of
operators are the presence of corrections to the MSSM Higgs sector and the
generation of "wrong"-Higgs Yukawa couplings and fermion-fermion-scalar-scalar
interactions. These couplings have implications for supersymmetry searches at
the LHC.Comment: Contribution to the proceedings of the "Susy 2008" conference; (6
pages
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