Speaker
Description
Event shape observables such as transverse spherocity($S_{0}$) have evolved as a
powerful tool to separate soft and hard contributions in an event in small collision
systems. To understand this phenomenon, we used two-particle differential-number
correlation functions, $R_{2}$, and transverse momentum correlation functions, $P_{2}$, of
charged particles produced in pp collisions at the LHC center-of-mass energy
$\sqrt{\textit{s}}$ = 7 TeV with the PYTHIA model. The $\Delta\varphi$-dependance of these correlation
functions in different multiplicity and $S_{0}$ classes are discussed . We find that these
correlation functions exhibit different shapes and sizes in both near-side(NS)
and away-side(AS) with multiplicity and $S_{0}$ classes. We see a strong correlation
in the NS and AS of these correlation functions for low-$S_{0}$(jetty-like),
which become weaker for high-$S_{0}$(isotropic). In addition, mean-$\textit{p}_{\rm T}$ of charged
particles for low-$S_{0}$, high-$S_{0}$ and $S_{0}$-integrated are discussed. Finally, it was
observed that $S_{0}$ should be a good observable as compared to multiplicity to
disentangle jetty and isotropic events in a small collision system.
| In-person participation | No |
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