Confronting models on cosmic ray interactions with particle physics at LHC energies
arXiv:hep-ph/0702238 · doi:10.1140/epjc/s10052-007-0412-6
Abstract
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.
8 pages revtex, 8 figures, added references
References in corpus (9)
- High-Energy-Physics Event Generation with PYTHIA 6.1
- Scalar-Tensor-Vector Gravity Theory
- QGSJET-II: towards reliable description of very high energy hadronic interactions
- Prospects for New Physics observations in diffractive processes at the LHC and Tevatron
- Extensive Air Shower Simulations at the Highest Energies
- High Energy Physics in the Atmosphere: Phenomenology of Cosmic Ray Air Showers
- Comparison of AGASA data with CORSIKA simulation
- Very High Energy Cosmic Rays and Their Interactions
- Influence of diffractive interactions on cosmic ray air showers