Sterile neutrinos at the CNGS
| dc.creator | Donini, A. | |
| dc.creator | Maltoni, M. | |
| dc.creator | Meloni, D. | |
| dc.creator | Migliozzi, P. | |
| dc.creator | Terranova, F. | |
| dc.date | 2007-04-03 | |
| dc.date | 2007-10-11 | |
| dc.date.accessioned | 2026-07-07T12:23:51Z | |
| dc.date.available | 2026-07-07T12:23:51Z | |
| dc.description | We study the potential of the CNGS beam in constraining the parameter space of a model with one sterile neutrino separated from three active ones by an $\mathcal{O}(\eVq)$ mass-squared difference, $\Dmq_\Sbl$. We perform our analysis using the OPERA detector as a reference (our analysis can be upgraded including a detailed simulation of the ICARUS detector). We point out that the channel with the largest potential to constrain the sterile neutrino parameter space at the CNGS beam is $ν_μ\to ν_τ$. The reason for that is twofold: first, the active-sterile mixing angle that governs this oscillation is the less constrained by present experiments; second, this is the signal for which both OPERA and ICARUS have been designed, and thus benefits from an extremely low background. In our analysis we also took into account $ν_μ\to ν_e$ oscillations. We find that the CNGS potential to look for sterile neutrinos is limited with nominal intensity of the beam, but it is significantly enhanced with a factor 2 to 10 increase in the neutrino flux. Data from both channels allow us, in this case, to constrain further the four-neutrino model parameter space. Our results hold for any value of $\Dmq_\Sbl \gtrsim 0.1 \eVq$, \textit{i.e.} when oscillations driven by this mass-squared difference are averaged. We have also checked that the bound on $θ_{13}$ that can be put at the CNGS is not affected by the possible existence of sterile neutrinos. | |
| dc.description | Major modifications; new analysis after MiniBooNE data release: 21 pages, 5 figures | |
| dc.identifier | https://arxiv.org/abs/0704.0388 | |
| dc.identifier | http://arxiv.org/abs/0704.0388 | |
| dc.identifier | JHEP 0712:013,2007 | |
| dc.identifier | doi:10.1088/1126-6708/2007/12/013 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/214136 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Sterile neutrinos at the CNGS | |
| dc.type | text |