Search

This paper gives an overview of the work done so far to produce sufficient neutrino fluxes for neutrino oscillation physics using beta beams. The design study on a beta beam scenario, the EURISOL (European Isotope Separation On-Line Radioactive Ion Beam Facility) Design Study, a project funded by the European Commission (EC), is now ready to be published. The study is based on the acceleration of 6He and 18Ne ions to produce the (anti-)neutrino beam using the existing CERN infrastructure for acceleration of the ions. We will here briefly describe the work with emphasis on how potential showstoppers, in particular radiation safety and equipment damage, have been dealt with. New results for the production of 6He show very encouraging results. We are now confident that this ion is a good choice to produce antineutrinos. However, the ion production needed for the physics experiments could not, up to now, be reasonably satisfied for 18Ne. Therefore, studies of alternative beta emitters, 8Li and 8B, with properties interesting for physics reach, have been proposed. The production of these ions is studied within the EC funded EUROnu project, “A High Intensity Neutrino Oscillation Facility for Europe.” This project will end in 2012. A small storage ring, in which the beam traverses a target, creating the 8Li and 8B isotopes that will be collected and accelerated, is studied in this proposal. We present the latest developments for the production of these ions, including a production ring lattice. Extensive Geant4 simulations have been done with the aim of developing a model of the production target that can be used for simulations of the necessary cooling system. In this paper we present the status of the work performed and an overview of ongoing and planned activities to make the beta beam project a solid proposal for neutrino production within the EUROnu project. [ABSTRACT FROM AUTHOR]

The neutrino oscillation data are well explained by the tri-bimaximal pattern. Recently a paper appeared showing that also the bimaximal pattern could be a very good starting point in order to describe the lepton mixing. In this paper I review both the flavour structures and then I present an explicit model. [ABSTRACT FROM AUTHOR]

MERIT is a proof-of-principle experiment which demonstrates the key target concepts for the production of muons required for a muon collider or a neutrino factory. The experiment was run at CERN utilizing 14 and 24 GeV proton beams from the PS. The key elements of the experiment include the impact of the proton beam with a free flowing mercury jet within the confines of a 15-T solenoid field. Results from the experiment are reported. [ABSTRACT FROM AUTHOR]

We review the search for ve from μ+ decays at rest with the KARMEN experiment. A potential excess of ve-induced events as seen in the LSND experiment can be interpreted as evidence for vμ → ve or as indication of lepton flavor (LF) violation in μ+ decays. The KARMEN results show no hint for extra ve, thereby excluding large parameter areas for an oscillation signal as well as the LF violating μ+ decay at more 90% C.L. as source of the LSND ve excess. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR]

A summary of the present status of the charged lepton flavor violation search with muons is presented. The relevant measurements (g-2)μ, the μ + → e + γ decay and the direct muon-to-electron conversion projects are briefly reviewed. [ABSTRACT FROM AUTHOR]

An analysis of the neutrino oscillation physics capability of a low energy Neutrino Factory is presented, including a first simulation of detector efficiency and event energy threshold. [ABSTRACT FROM AUTHOR]

These proceedings provide a summary of results from a combined analysis of short-baseline (SBL) oscillation data, including data from LSND and MiniBooNE, under a 3 active +2 sterile neutrino oscillation hypothesis. The analysis is done within both a CP-conserving (CPC) and a CP-violating (CPV) framework. The implications for any possible leptonic CP violation that is allowed by a combined analysis of the null-SBL and LSND experiments are discussed in relation to the MiniBooNE experiment. [ABSTRACT FROM AUTHOR]

Some theories of new physics accounting for neutrino masses can give rise to a low-energy non-unitary leptonic mixing matrix. It is shown that the CP-asymmetries in the νμ→ντ channel are an excellent probe of such new physics. In adition, we clarify the relationship betweeen our framework and the so called “non-standard neutrino interactions” scenarios: the sensitivities explored here apply as well to such constructions, except for extremely fine-tuned cancellations. [ABSTRACT FROM AUTHOR]