scholarly journals Characterization of the topology of proton-proton collisions

Author(s):  
Lucas Salgado de Santana ◽  
David Dobrigkeit Chinellato ◽  
Gabriel Reis Garcia

In the LHC’s high-energy proton-proton collision experiments, a great amount of particles are produced after the interaction processes. To better understand the production mechanisms of such particles, it is convenient to study and characterize their topology. To do so, we shall study two-particle correlation functions. These functions are calculated with data generated by the PYTHIA event simulator, and in several different intervals of correlated particle’s transverse momentum. In this way, we may observe a particle jet structure, observed in the experiments and previewed by perturbative QCD, and how such structure is affected by different hadronization models.

Author(s):  
Michael E. Peskin

This chapter discusses the properties of proton-proton collision events at high energy and the predictions of QCD. It describes the prediction of jet production in proton-proton collisions and the comparison of this prediction to experiment.


2012 ◽  
Vol 20 ◽  
pp. 214-221
Author(s):  
JAMAL JALILIAN-MARIAN

Forward rapidity di-hadron azimuthal angular correlations in high energy proton-nucleus and proton-proton collisions are sensitive to quadrupoles; traceless correlator of 4 Wilson lines whereas single inclusive particle production iNVOLVES only dipoles, traceless correlator of 2 Wilson lines. We discuss the progress made in understanding the energy (rapidity) evolution of the quadrupole as well as its various limits.


2018 ◽  
Vol 172 ◽  
pp. 05008 ◽  
Author(s):  
Edgar Dominguez-Rosas ◽  
Eleazar Cuautle Flores

Forward-backward multiplicity correlations have been used to study hadron production mechanisms in electron-positron, proton-proton and more recently in leadlead collisions. The experimental results on this correlations and its comparison to different models reveals an incomplete agreement. In this work, we present an study of forward backward multiplicity correlations in proton-proton collisions using PYTHIA event generator, at LHC energies. Detailed analysis is presented in the case of soft and hard QCD processes, incorporating color reconnection model as part of hadronization mechanism and multiple parton interactions effects in the correlations. Our results and its comparison to available experimental data suggest that this kind of correlations are great tools to characterize the events and gives the possibility to disentangle phenomena in hard and soft QCD processes.


1970 ◽  
Author(s):  
P. Franzini ◽  
S. Zubarik ◽  
/Columbia U. ◽  
Juliet Lee-Franzini ◽  
J. Cole ◽  
...  

1958 ◽  
Vol 8 (1) ◽  
pp. 135-146 ◽  
Author(s):  
D. Ito ◽  
S. Minami ◽  
H. Tanaka

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