Abstract
The model HDPM of CORSIKA has been updated and developed on the base of the recent measurements by LHCb, CMS, TOTEM... The new model GHOST involving a 4-source production reproduces correctly the pseudorapidity distributions of charged secondaries and has been testified with the data in the mid and forward rapidity region, especially in the complex case of TOTEM and also with the recent measurements of CMS up to FX2 (9.2 · 10 16 eV). Special calculations have been devoted to the semi-inclusive data playing an important role in the cosmic ray simulation (fluctuations in the earliest collisions, individual cascades and remarkable events). Taking into account the violation of KNO scaling, the negative binomial distribution has been used pointing out an asymptotic behaviour of total charged multiplicities at primary energies exceeding 40 TeV (7 · 10 17 eV). The interpretation of the most recent measurements suggests for EAS generated by primary protons a larger production of muons and a cascade maximum at higher altitude than previously assumed.
Highlights
In the sections that follow, we shall discuss the new improvements in cosmic ray simulation suggested by the mAToLstArSe,cCenMt Sre, sTuOltTs EoMf,thLeHCLHb..C. ,upestpoe√cisal=ly the data of 13 TeV used as the largest energy available to elaborate and testify the new Monte Carlo generator suitable for cosmic ray simulations
Our histograms calculated with GHOST confirm the large dtois√crsep=an7ciTeesVw. ith UA5 data when the energy is rising up the attempts made in the fragmentation region of the inclusive pseudorapidity distributions plotted in the beam frame were not conclusive; the measurements were obtained for ISR up to η − ybeam = −0.75 for 53 GeV in ISR, but only up to η − ybeam = −2.4 for
After introducing one proportion χ of the multiplicity distributed to the pair of gaussian centered in central region and in mid-rapidity region, it is possible to obtain with a minimal Monte Carlo generation of random deviates the total original rapidity distribution source of the distribution of pseudorapidity shown in the Fig. 4 for various range of multiplicity
Summary
In the sections that follow, we shall discuss the new improvements in cosmic ray simulation suggested by the mAToLstArSe,cCenMt Sre, sTuOltTs EoMf ,thLeHCLHb..C. ,upestpoe√cisal=ly the data of 13 TeV used as the largest energy available to elaborate and testify the new Monte Carlo generator suitable for cosmic ray simulations. In the sections that follow, we shall discuss the new improvements in cosmic ray simulation suggested by the mAToLstArSe,cCenMt Sre, sTuOltTs EoMf ,thLeHCLHb..C. Upestpoe√cisal=ly the data of 13 TeV used as the largest energy available to elaborate and testify the new Monte Carlo generator suitable for cosmic ray simulations. Observing that Extensive Air Showers (EAS) are random individual events, we emphasize here the interest of the semi inclusive data delivered by the LHC at ultra high energy
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