titolo

Seminario Infn 30/1/14 Dr. Cannoni

target

totem,dipartimento,ppim

inizio

Giovedì 30 Gennaio 2014 ore 15:00

luogo

Sala Videoconferenza, p.3 via Pascoli

relatore

Dr. Mirco Cannoni, Univ. Huelva, Spagna

titoloevento

Relativistic thermally averaged reaction rates

abstract

We discuss the theory of reaction rates in a relativistic classical gas in analogy with the nonrelativistic case. We first clarify the relation between the invariant relativistic relative velocity, the Moller velocity and non-relativistic relative velocity and their role in the formulation of the invariant cross section and reaction rate. We derive the thermal probability distribution for the relativistic relative velocity, and find an exact formula for the mean value. We apply these results to the calculation of the relic density of
Weakly Interacting Massive Particles that are candidates for density of cold Dark Matter.

people

aperto a tutti gli interessati

organizzatori

Sez. INFN-PG

docsrefs

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