1,016 research outputs found
Magnetic Monopole Searches
In these lecture notes we discuss the status of the searches for classical
Dirac Magnetic Monopoles (MMs) at accelerators, for GUT superheavy MMs in the
penetrating cosmic radiation and for Intermediate Mass MMs. Also the searches
for nuclearites and Q-balls are considered.Comment: 11 pages, 7 figures. Lecture at the 7th School on Non-Accelerator
Astroparticle Physics, ICTP, Trieste, 200
CP violation and mass hierarchy at medium baselines in the large theta(13) era
The large value of theta(13) recently measured by rector and accelerator
experiments opens unprecedented opportunities for precision oscillation
physics. In this paper, we reconsider the physics reach of medium baseline
superbeams. For theta(13) ~ 9 degree we show that facilities at medium
baselines -- i.e. L ~ O(1000 km) -- remain optimal for the study of CP
violation in the leptonic sector, although their ultimate precision strongly
depends on experimental systematics. This is demonstrated in particular for
facilities of practical interest in Europe: a CERN to Gran Sasso and CERN to
Phyasalmi nu_mu beam based on the present SPS and on new high power 50 GeV
proton driver. Due to the large value of theta(13), spectral information can be
employed at medium baselines to resolve the sign ambiguity and determine the
neutrino mass hierarchy. However, longer baselines, where matter effects
dominate the nu_mu->nu_e transition, can achieve much stronger sensitivity to
sign(Delta m^2) even at moderate exposures.Comment: 14 pages, 14 figures, version to appear in EPJ
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