IFLP   13074
INSTITUTO DE FISICA LA PLATA
Unidad Ejecutora - UE
artículos
Título:
Confronting models on cosmic ray interactions with particle physics at LHC energies.
Autor/es:
MARIA TERESA DOVA, SERGIO FERRARI
Revista:
EUROPEAN PHYSICAL JOURNAL C - PARTICLES AND FIELDS
Editorial:
ELSEVIER
Referencias:
Año: 2007 vol. 52 p. 673 - 681
ISSN:
1434-6044
Resumen:
Inelastic
pp collisions are dominated by soft (low momentum transfer) physics where
perturbative QCD cannot be fully applied. A deep understanding of both soft and
semi-hard processes is crucial for predictions of minimum bias and underlying
events of the now coming on line pp Large Hadron Collider (LHC). Moreover, the
interaction of cosmic ray particles entering in the atmosphere is extremely
sensitive to these soft processes and consequently cannot be formulated from
first principles. Because of this, air shower analyses strongly rely on
hadronic interaction models, which extrapolate collider data several orders of
magnitude. A comparative study of Monte Carlo simulations of pp collisions (at
the LHC center-of-mass energy ~ 14 TeV) using the most popular hadronic
interaction models for ultrahigh energy cosmic ray (SIBYLL and QGSJET) and for
collider physics (the PYTHIA multiparton model) is presented. The most relevant
distributions are studied including those observables from diffractive events
with the aim of discriminating between the different models.