https://doi.org/10.1140/epja/s10050-020-00081-4
Regular Article - Theoretical Physics
Multiplicity dependence of strange and multi-strange hadrons in p–p, p–Pb and Pb–Pb collisions at LHC energies using Tsallis–Weibull formalism
1
Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
2
Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, India
* e-mail: Sadhana.Dash@cern.ch
Received:
16
October
2019
Accepted:
31
January
2020
Published online:
3
April
2020
The transverse momentum (
) distribution of strange hadrons (
and 
) and multi-strange hadrons( 
and 
) measured in p–p, p–Pb, and Pb–Pb collisions at LHC energies has been studied for different multiplicity classes using Tsallis–Weibull (or q-Weibull) formalism. The distribution describes the measured spectra for all multiplicity (or centrality) classes. The multiplicity dependence of the extracted parameters were studied for the mentioned collision systems. The 
parameter was observed to increase systematically with the collision multiplicity and follows a mass hierarchy for all collision systems. This characteristic feature indicates that can be associated to the strength of collectivity in heavy ion collisions. It can also be related to strength of dynamic effects such as multi-partonic interactions and color reconnections which mimic collectivity in smaller systems. The non-extensive q parameter is found to be greater than one for all the particles suggesting that the strange particles are emitted from a source which is not fully equilibrated.
© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature, 2020
