Rencontres de Moriond EW 2009

Session

Young Scientists Forum 3

YSF3

12 mars 2009, 17:00

La Thuile

53. Scalar Dark Matter and DAMA

Mlle Sarah Andreas (Institut für Theoretische Physik E, RWTH Aachen University, D-52056 Aachen)

12/03/2009 17:00

A light scalar WIMP is studied in view of the recent results of the DAMA collaboration. In a scenario where both the WIMP's annihilation and its elastic scattering on nuclei occur dominantly through Higgs exchange, a one-to-one relation between the WIMP’s relic density and its spin-independent direct detection rate is established. The ratio of the relevant cross sections depends only on the...

25. Direct determination of neutrino mass parameters at future colliders

Dr Mario Kadastik (NICPB)

12/03/2009 17:08

We investigate in the framework of type-II see-saw mechanism the relationships between the neutrino parameters and the Higgs triplet. The mass matrix of the neutrinos is directly related to the branching ratios of the doubly charged component of the triplet allowing an insight to the neutrino parameters by measuring the branching ratios to leptons. We derive relevant analytic results to tell...

32. Measurement of the relative fraction of the gluon-gluon fusion in top-antitop production process at 1.96 TeV proton-antiproton collisions using CDF

M. Naoki Kimura (University of Tsukuba)

12/03/2009 17:16

We present the measurement of the relative fraction of the subprocess where the initial states are gluon-gluon pairs or quark-antiquark pairs in top-antitop production at 1.96 TeV proton-antiproton collisions. We identify and reconstruct the signal using events which include two high-momentum leptons, and we distinguish the two subproceses by utilizing the correlated spin states of top and...

100. Measurement of topquark mass

M. Paul Lujan (Lawrence Berkeley National Laboratory Berkeley - CA USA)

12/03/2009 17:24

101. Is antigravity possible?

M. Michael Bebronne (Université Libre de Bruxelles Brussels Belgium)

12/03/2009 17:32