Monte Carlo study of forward pi0 production spectra to be measured by the LHCf experiment for the purpose of benchmarking hadron interaction models at 10(17)-eV

The LHCf experiment aims to improve knowledge of forward neutral particle production spectra at the LHC energy which is relevant for the interpretation of air shower development of high energy cosmic rays. Two detectors, each composed of a pair of sampling and imaging calorimeters, have been installed at the forward region of IP1 to measure @p^0 energy spectra above 600GeV. In this paper, we present a Monte Carlo study of the @p^0 measurements to be performed with one of the LHCf detectors for pro ton-proton collisions at s=14TeV. In approximately 40min of operation at luminosity 0.8x10^2^9cm^-^2s^-^1 during the beam commissioning phase of LHC, about 1.5x10^4@p^0 events are expected to be obtained at two transverse positions of the detector. The ba ckgrounds from interactions of secondary particles with beam pipes and interactions of beam particles with residual gas in the beam pipes are expected to be less than 0.1% of the signal from @p^0s. We also discuss the capability of LHCf measurements to di scriminate between the various hadron interaction models that are used for simulation of high energy air showers, such as DPMJET3.03, QGSJETII-03, SIBYLL2.1 and EPOS1.99.

High energy cosmic rays
LHC
LHCf
High energy pi0 production spectra
cosmic radiation: VHE
showers: air
pi0: energy spectrum
LHC-F
CERN LHC Coll
Monte Carlo

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