Past Thursday Particle Seminar

14 June 2007
16:15
Jennie Smillie
Abstract
&nbsp; <p style="MIN-HEIGHT: 14px; MARGIN: 0px"><i>If new particles are produced at the LHC, it is vital that we can extract as much information&nbsp;as possible from them about the underlying theory.&nbsp; I will discuss some recent work on extracting spin information from invariant mass distributions of new particles.&nbsp; I will then introduce the&nbsp;Kullback-Leibler method of quantifying our ability to distinguish different scenarios.</i> &nbsp;
  • Thursday Particle Seminar
7 June 2007
16:15
Constantinos Pallis
Abstract
&nbsp; <p style="MIN-HEIGHT: 14px; MARGIN: 0px"><i>We consider two-stage inflationary models in which a superheavy scale&nbsp;F-term hybrid inflation is followed by an intermediate scale modular inflation.&nbsp;We confront these models with the restrictions on the power spectrum of density&nbsp;perturbations P_R and the spectral index n_s from the recent data within the&nbsp;power-law cosmological model with cold dark matter and a cosmological constant.&nbsp;We show that these restrictions can be met provided that the number of e-foldings&nbsp;N_HI* of the pivot scale k*=0.002/Mpc during hybrid inflation is appropriately&nbsp;restricted. The additional e-foldings required for solving the horizon and flatness&nbsp;problems can be naturally generated by the subsequent modular inflation realized&nbsp;by a string axion.</i><br> &nbsp; &nbsp;
  • Thursday Particle Seminar

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