Speaker
Sidharth Kumar Prasad
(Wayne State University (US))
Description
Non-diffractive proton-proton collisions can be classified into ``soft'' and ``hard'' (or ``semi-hard'') interactions,
with hard (or semi-hard) interactions involving hard parton-parton interactions due to large momentum transfer
resulting into jets, whereas interactions without a jet (or minijet) can be considered as soft interactions.
Energy invariance in the properties of soft events (e.g. multiplicity, transverse momentum, and mean
transverse momentum distributions) is observed at lower centre of mass energies [1,2].
We present a detailed study of the properties of soft and hard events at available LHC energies using
various event generators. This study can further be extended to investigate the possibility of collectivity
in proton-proton collisions at the LHC. Events are classified into soft and hard, based on presence of a jet.
Sensitivity of various jet reconstruction algorithms ($k_{\rm T}$, $\rm anti-{{\it k}_T}$) and jet reconstruction
parameters on the event classification are also investigated.
[1] CDF Collaboration, Phys.~Rev.~D{\bf 65}, 072005 (2002).
[2] Shengli Huang for the STAR Collaboration,\arXiv: nucl/Ex/0403038 (2004).
Author
Sidharth Kumar Prasad
(Wayne State University (US))
