INVESTIGADORES
DOVA Maria Teresa
congresos y reuniones científicas
Título:
Hinting at primary composition using asymmetries in time distributions
Autor/es:
M.T.DOVA, M.MANCENIDO, A.G.MARIAZZI, F.ARQUEROS, D.GARCIA-PINTO
Lugar:
Pune, India
Reunión:
Conferencia; 29th ICRC; 2005
Institución organizadora:
Tata Inst
Resumen:
Evidence of azimuthal asymmetries in the time structure and signal size have
been found in non-vertical showers at the Pierre Auger Observatory. It has been
previously shown that the asymmetry in time distributions offers a new
possibility for the determination of the mass composition. New studies have
demonstrated that the dependence of the asymmetry parameter in the rise-time
and fall-time distributions with sec(theta) shows a clear peak. Both, the
position of the peak, X_asymax, and the size of the asymmetry at X_asymax are
sensitive to primary mass composition and have a small dependence on energy. In
this paper a study of the discriminating power of the new observables to
separate primary species is presented.