EPJ Web of Conferences (Jan 2018)

Estimation of the isothermal compressibility from event-by-event multiplicity fluctuation studies

  • Mukherjee Maitreyee,
  • Basu Sumit,
  • Thakur Sanchari,
  • Adhya Souvik P.,
  • Chatterjee Arghya,
  • Chatterjee Sandeep,
  • Nayak Tapan K.

DOI
https://doi.org/10.1051/epjconf/201817114010
Journal volume & issue
Vol. 171
p. 14010

Abstract

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The first estimation of the isothermal compressibility (kT) of matter is presented for a wide range of collision energies from √sNN = 7.7 GeV to 2.76 TeV. kT is estimated with the help of event-byevent charged particle multiplicity fluctuations from experiment. Dynamical fluctuations are extracted by removing the statistical fluctuations obtained from the participant model. kT is also estimated from event generators AMPT, UrQMD, EPOS and a hadron resonance gas model. The values of isothermal compressibility are estimated for the Large Hadron Collider (LHC) energies with the help of the event generators.