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- Title
Rapidity and Energy Dependencies of Temperatures and Volume Extracted from Identified Charged Hadron Spectra in Proton–Proton Collisions at a Super Proton Synchrotron (SPS).
- Authors
Yang, Pei-Pin; Liu, Fu-Hu; Olimov, Khusniddin K.
- Abstract
The standard (Bose–Einstein/Fermi–Dirac, or Maxwell–Boltzmann) distribution from the relativistic ideal gas model is used to study the transverse momentum ( p T ) spectra of identified charged hadrons ( π − , π + , K − , K + , p ¯ , and p) with different rapidities produced in inelastic proton–proton ( p p ) collisions at a Super Proton Synchrotron (SPS). The experimental data measured using the NA61/SHINE Collaboration at the center-of-mass (c.m.) energies s = 6.3 , 7.7, 8.8, 12.3, and 17.3 GeV are fitted well with the distribution. It is shown that the effective temperature ( T e f f or T), kinetic freeze-out temperature ( T 0 ), and initial temperature ( T i ) decrease with the increase in rapidity and increase with the increase in c.m. energy. The kinetic freeze-out volume (V) extracted from the π − , π + , K − , K + , and p ¯ spectra decreases with the rapidity and increase with the c.m. energy. The opposite tendency of V, extracted from the p spectra, is observed to be increasing with the rapidity and decreasing with the c.m. energy due to the effect of leading protons.
- Subjects
PROTON-proton interactions; EINSTEIN, Albert, 1879-1955; BOSE Corp.; HADRONS; SYNCHROTRONS; IDEAL gases; MOMENTUM distributions; TEMPERATURE; BOSE-Einstein condensation
- Publication
Entropy, 2023, Vol 25, Issue 12, p1571
- ISSN
1099-4300
- Publication type
Article
- DOI
10.3390/e25121571