From: Andrea Baldini <>
Newsgroups: milano.seminari
Subject: Seminari 15 Aprile 2002
Date: Wed, 10 Apr 2002 12:35:54 +0200

15 Aprile 2002 - ore 14.30 - aula 3020
Relatore: Pavol Bobik (INFN Milano)
Titolo: Cosmic Rays propagation in the Solar Cavity and their
Detection near the Earth
Isotropic current of galactic cosmic rays (GCR) composed
mostly by protons and He nuclei are entering the Heliosphere.
This flux of GCR is modulated in the Heliosphere by the solar
wind and the Interplanetary Magnetic Field. A possible approach
for estimating the solar modulation of GCR is the stochastic
(Monte-Carlo) simulation. Results from these simulations will be
presented for several radii and heliolatitudes in the Heliosphere.
Propagation of cosmic rays through the Magnetosphere is usualy
analyzed by a method named "backtracing". The flux of cosmic
rays at arbitrary points inside the magnetosphere can be
estimated, together with the cut-off rigidities and their changes
in time. Result from simulations for orbits and groundbased
detectors will be presented. For groudbased positions the
interaction of cosmic rays with atmosphere is also considered.
15 Aprile 2002 - ore 16.00 - aula 3020
Relatore: Mikhail Levtchenko (INFN Milano)
Titolo: The search for the Resonances in Two-Photons collision
in L3 detector at CERN.
L3 detector at CERN provides valuable information to study
resonance formations in Two-Photons collision. Statistics
is large enough to perform precise measurements of resonance
parameters - mass and width as well as two photon width of
resonances. The data sample available corresponds to a total
integrated luminosity of 610pb^-1 collected at the centre of
mass energies from 183 GeV to 209 GeV. Preliminary results of
the set of JPC=0-+,2++ resonances are presented. including
analyses on eta_c and eta_b pesudoscalar mesons.

Pier Giorgio Rancoita
sez. INFN di Milano
c/o Dip. di Fisica
piazza della Scienza 3
20126 Milano
ph.: +39-02-6448-2308
fax: +39-02-6448-2463
web page: