Mathematical modelling for pseudorapidity distribution of hadron-hadron collisions

作者：El Bakry Mahmoud Y^*; El Dahshan El Sayed A; El Bakry Salah Y

来源：European Physical Journal Plus, 2015, 130(1): 17.

DOI：10.1140/epjp/i2015-15017-5

The modelling of proton-proton collisions at high energies using both group method data handling (GMDH) and gene expression programming (GEP) approaches is investigated over a wide range of center-of-mass energy (from root s = 23.6 GeV to 7TeV). We have used GMDH and GEP models to obtain two different mathematical formulae expressing the complex relation of the charged-particle pseudorapidity distribution (dN(ch)/d(eta)) of proton-proton interactions as a function of the center-of-mass energy (root s) in a simple explicit form. We have used the obtained formulae to simulate and predict dN(ch)/d(eta). Predictions are made at root s = 10TeV and 14TeV. Compared to the available experimental data and to some widely used Monte Carlo generators (PYTHIA, PHOJET, and QGSM models), it is found that our models can accurately simulate and predict the charged-particle pseudorapidity distribution of proton-proton collisions.

• 出版日期2015-1-30