21,484 research outputs found
Neutrino mass in supersymmetry
After summarizing neutrino oscillation results I discuss high and low-scale
seesaw mechanisms, with or without supersymmetry, as well as recent attempts to
understand the pattern of neutrino mixing from flavor symmetries. I also
mention the possibility of intrinsic supersymmetric neutrino masses in the
context of broken R parity models, showing how this leads to clear tests at the
LHC.Comment: 10 pages, 8 composite figures, plenary talk at SUSY09, to be
published in proceedings (AIP
Status of Neutrino Theory
A summary of neutrino oscillation results is given along with a discussion of
neutrino mass generation mechanisms, including high and low-scale seesaw, with
and without supersymmetry, as well as recent attempts to understand flavor. I
argue that if the origin of neutrino masses is intrinsically supersymmetric, it
may lead to clear tests at the LHC. Finally, I briefly discuss thermal
leptogenesis and dark matter.Comment: 12 pages, 11 composite figures (24 postscript files), plenary talk
XXIV International Symposium on Lepton Photon Interactions at High Energies
(Lepton Photon 09
Neutrino masses twenty-five years later
The discovery of neutrino mass marks a turning point in elementary particle
physics, with important implications for nuclear and astroparticle physics.
Here I give a brief update, where I summarize the current status of
three-neutrino oscillation parameters from current solar, atmospheric, reactor
and accelerator neutrino data, discuss the case for sterile neutrinos and LSND,
and also the importance of tritium and double beta decay experiments probing
the absolute scale of neutrino mass. In this opininated look at the present of
neutrino physics, I keep an eye in the future, and a perspective of the past,
taking the oportunity to highlight Joe Schechter's pioneering contribution,
which I have had the fortune to share, as his PhD student back in the early
eighties.Comment: Invited talk presented at MRST'03 (Joe-Fest), Syracuse, NY, May 2003,
20 pages, uses AIP style file
Neutrino masses and oscillations
I summarize the status of three--neutrino oscillations that follow from
combining the relevant world's data. The discussion includes the small
parameters Delta_m-sol/Delta_m-atm and \sin^2\theta_{13}, which characterize
the strength of CP violation in neutrino oscillations, the impact of
oscillation data on the prospects for probing the absolute scale of neutrino
mass in \nbb and the robustness of the neutrino oscillation interpretation
itself in the presence of non-standard physics. I also comment on the
theoretical origin of neutrino mass, mentioning recent attemps to explain
current oscillation data.Comment: 7 pages, 7 figures (in 9 eps/ps files). invited talk to appear in the
proceedings of 11th International Symposium on Particles, Strings and
Cosmology (PASCOS 2005), Gyeongju, Korea, 30 May - 4 Jun 200
Neutrinos in astroparticle physics
I briefly discuss the role of neutrinos as probes in astroparticle physics
and review the status of neutrino oscillation parameters as of June 2006,
including recent fluxes, and latest SNO, K2K and MINOS results. I comment on
the origin of neutrino masses in seesaw-type and low-scale models and mention
some of their experimental signals.Comment: 16 pages, 9 figures. Contribution to the Proceedings of the
International Workshop The Dark Side of the Universe, Madrid, June 20-24,
2006. Proceedings to be published in AI
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