A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Improvement of the low energy neutrino factory
The low energy neutrino factory has been proposed as a very sensitive setup for future searches for CP violation and matter effects. Here we study how its performance is affected when the experimental specifications of the setup are varied. Most notably, we have considered the addition of the "platinum'' nu(mu) -> nu(e) channel. We find that, while theoretically the extra channel provides very useful complementary information and helps to lift degeneracies, its practical usefulness is lost when considering realistic background levels. Conversely, an increase in statistics in the "golden'' nu(mu) -> nu(e) channel and, to some extent, an improvement in the energy resolution, lead to an important increase in the performance of the facility, given the rich energy dependence of the "golden'' channel at these energies. We show that a low energy neutrino factory with a baseline of 1300 km, muon energy of 4.5 GeV, and either a 20 kton totally active scintillating detector or 100 kton liquid argon detector, can have outstanding sensitivity to the neutrino oscillation parameters theta(13), delta, and the mass hierarchy. For our estimated exposure of 2: 8 x 10(23) kton x decays per muon polarity, the low energy neutrino factory has sensitivity to theta(13) and delta for sin(2)(2 theta(13)) > 10(-4) and to the mass hierarchy for sin(2)(2 theta(13)) > 10(-3). ; This work was supported in part by the Fermi National Accelerator Laboratory, which is operated by the Fermi Research Association, under Contract No. DE-AC02-76CH03000 with the U.S. Department of Energy. SP and TL acknowledge the support of EuCARD (European Coordination for Accelerator Research and Development), which is co-funded by the European Commission within the Framework Programme 7 Capacities Specific Programme, under Grant Agreement number 227579. OM and SP would like to thank the Theoretical Physics Department at Fermilab for hospitality and support. TL also acknowledges the support of a STFC studentship and funding for overseas fieldwork. EFM acknowledges support by the DFG cluster of excellence ‘Origin and Structure of the Universe’. This work was undertaken with partial support from the European Community under the European Commission Framework Programme 7 Design Studies: EUROnu (Project Number 212372) and LAGUNA (Project Number 212343). The EC is not liable for any use that may be made of the information contained herein. ; Peer reviewed
Improvement of the low energy neutrino factory
The low energy neutrino factory has been proposed as a very sensitive setup for future searches for CP violation and matter effects. Here we study how its performance is affected when the experimental specifications of the setup are varied. Most notably, we have considered the addition of the "platinum'' nu(mu) -> nu(e) channel. We find that, while theoretically the extra channel provides very useful complementary information and helps to lift degeneracies, its practical usefulness is lost when considering realistic background levels. Conversely, an increase in statistics in the "golden'' nu(mu) -> nu(e) channel and, to some extent, an improvement in the energy resolution, lead to an important increase in the performance of the facility, given the rich energy dependence of the "golden'' channel at these energies. We show that a low energy neutrino factory with a baseline of 1300 km, muon energy of 4.5 GeV, and either a 20 kton totally active scintillating detector or 100 kton liquid argon detector, can have outstanding sensitivity to the neutrino oscillation parameters theta(13), delta, and the mass hierarchy. For our estimated exposure of 2: 8 x 10(23) kton x decays per muon polarity, the low energy neutrino factory has sensitivity to theta(13) and delta for sin(2)(2 theta(13)) > 10(-4) and to the mass hierarchy for sin(2)(2 theta(13)) > 10(-3). ; This work was supported in part by the Fermi National Accelerator Laboratory, which is operated by the Fermi Research Association, under Contract No. DE-AC02-76CH03000 with the U.S. Department of Energy. SP and TL acknowledge the support of EuCARD (European Coordination for Accelerator Research and Development), which is co-funded by the European Commission within the Framework Programme 7 Capacities Specific Programme, under Grant Agreement number 227579. OM and SP would like to thank the Theoretical Physics Department at Fermilab for hospitality and support. TL also acknowledges the support of a STFC studentship and funding for overseas fieldwork. EFM acknowledges support by the DFG cluster of excellence ‘Origin and Structure of the Universe’. This work was undertaken with partial support from the European Community under the European Commission Framework Programme 7 Design Studies: EUROnu (Project Number 212372) and LAGUNA (Project Number 212343). The EC is not liable for any use that may be made of the information contained herein. ; Peer reviewed
Improvement of the low energy neutrino factory
Mena, Olga (author) / Pascoli, S. (author) / Li, Tracey (author) / Fernández-Martínez, Enrique (author)
2010-04-01
doi:10.1103/PhysRevD.81.073010
Article (Journal)
Electronic Resource
English
DDC:
690
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