HAL : in2p3-00023374, version 1

arXiv : hep-ex/0411062

DOI : 10.1140/epjc/s2005-02455-x

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European Physical Journal C 45 (2006) 643-657

The $\theta _{13}$ and $\delta _{CP}$ sensitivities of the SPL-Fréjus project revisited

Jean-Eric Campagne1, Antoine Cazes1

(2006)

An optimization of the CERN SPL beam line has been performed guided by the sensitivities to the \theta_{13} mixing angle and to the \delta_{CP} Dirac CP violating phase. A UNO-like 440 ktons water Cerenkov detector located at 130 km from the target in a new foreseen Frejus laboratory has been used as a generic detector. Concerning the \delta_{CP} independent \theta_{13} sensitivity, a gain of about 20% may be reached using a 3.5 GeV proton beam with a 40 m long, 2 m radius decay tunnel compared to the up to now considered 2.2 GeV beam energy and 20 m long, 1 m radius decay tunnel. This may motivate new machine developments to upgrade the nominal SPL proton beam energy.

1 :	LAL - Laboratoire de l'Accélérateur Linéaire

Thème(s)

:

Physique/Physique des Hautes Energies - Expérience

Mot(s)-clé(s) : neutrino oscillations – neutrino beams – CERN SPL – CP violation – PMNS matrix

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Contributeur : Françoise Marechal <>

Soumis le : Mercredi 1 Décembre 2004, 15:59:25

Dernière modification le : Jeudi 30 Mars 2006, 12:32:19