243 articles – 3618 Notices  [english version]
 HAL : in2p3-00026028, version 1
 arXiv : astro-ph/0512120
 Physics Letters B 637 (2006) 156-160
 Critical revision of the ZEPLIN-I sensitivity to WIMP interactions
 (2006)
 The ZEPLIN collaboration has recently published its first result presenting a maximum sensitivity of $1.1 \times 10^{-6}$ picobarn for a WIMP mass of $\approx$ 60 GeV. The analysis is based on a discrimination method using the different time distribution of scintillation light generated in electron recoil and nuclear recoil interactions. We show that the methodology followed both for the calibration of the ZEPLIN-I detector response and for the estimation of the discrimination power is not reliable enough to claim any background discrimination at the present stage. The ZEPLIN-I sensitivity appears then to be in the order of 10$^{-3}$ picobarn, three orders of magnitude above the claimed 1.1 10$^{-6}$ picobarn.
 équipe(s) de recherche : HELFA
 Thème(s) : Physique/Astrophysique/Cosmologie et astrophysique extra-galactiquePlanète et Univers/Astrophysique
 Lien vers le texte intégral : http://fr.arXiv.org/abs/astro-ph/0512120
 in2p3-00026028, version 1 http://hal.in2p3.fr/in2p3-00026028 oai:hal.in2p3.fr:in2p3-00026028 Contributeur : Sylvie Florès <> Soumis le : Vendredi 5 Janvier 2007, 15:37:35 Dernière modification le : Vendredi 5 Janvier 2007, 15:56:35