title: First results of the Phase II SIMPLE dark matter search.
abstract: We report results of a 14.1   kg d measurement with 15 superheated droplet detectors of total active mass 0.208 kg, comprising the first stage of a 30 kg d Phase II experiment. In combination with the results of the neutron-spin sensitive XENON10 experiment, these results yield a limit of |a(p)|<0.32 for M(W)=50 GeV/c² on the spin-dependent sector of weakly interacting massive particle-nucleus interactions with a 50% reduction in the previously allowed region of the phase space, formerly defined by XENON, KIMS, and PICASSO. In the spin-independent sector, a limit of 2.3×10⁻⁵ pb at M(W)=45 GeV/c² is obtained.
authors.affiliation: Department of Physics, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.
authors.forename: M
authors.initials: M
authors.lastname: Felizardo
authors.forename: T
authors.initials: T
authors.lastname: Morlat
authors.forename: A C
authors.initials: AC
authors.lastname: Fernandes
authors.forename: T A
authors.initials: TA
authors.lastname: Girard
authors.forename: J G
authors.initials: JG
authors.lastname: Marques
authors.forename: A R
authors.initials: AR
authors.lastname: Ramos
authors.forename: M
authors.initials: M
authors.lastname: Auguste
authors.forename: D
authors.initials: D
authors.lastname: Boyer
authors.forename: A
authors.initials: A
authors.lastname: Cavaillou
authors.forename: C
authors.initials: C
authors.lastname: Sudre
authors.forename: J
authors.initials: J
authors.lastname: Poupeney
authors.forename: R F
authors.initials: RF
authors.lastname: Payne
authors.forename: H S
authors.initials: HS
authors.lastname: Miley
authors.forename: J
authors.initials: J
authors.lastname: Puibasset