Fixed particle number constraint in a simple model of a thermal expanding system and $pp$ collisions at the LHC

Abstract

Two-boson momentum correlations at fixed particle number constraint are studied in a simple analytically solvable model of a thermal expanding system. We show that the increase of expansion rate, as well as increase of particle multiplicity, enhances the ground-state contribution to particle momentum spectra and leads to suppression of the Bose-Einstein momentum correlations. The relations of these findings to the multiplicity-dependent measurements of the Bose-Einstein momentum correlations in high-multiplicity $p+p$ collision events at the LHC are discussed.

arXiv comment21 pages, 6 figures

References in corpus (14)

• Femtoscopy in Relativistic Heavy Ion Collisions: Two Decades of Progress
• Particle Interferometry for Relativistic Heavy-Ion Collisions
• Boson Interferometry in High Energy Physics
• Finite-size effect on two-particle production in continuous and discrete spectrum
• The smallest fluid on earth
• Relativistic Corrections to Nonrelativistic Effective Field Theories
• Two-particle Bose-Einstein correlations in $pp$ collisions at $\sqrt{\mathbf{s}}=$ 0.9 and 7 TeV measured with the ATLAS detector
• Studying QGP with flow: A theory overview
• Study of Bose-Einstein correlations in pp, pPb, and PbPb collisions at $\sqrt{s_{\mathrm{NN}}}=$ 0.9-7 TeV
• Femtoscopic scales in $p+p$ and $p+$Pb collisions in view of the uncertainty principle
• Collective flow in high-multiplicity proton-proton collisions
• Correlation femtoscopy of small systems
• Bose-Einstein correlations of charged hadrons in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Bose-Einstein momentum correlations at fixed multiplicities: Lessons from an exactly solvable thermal model for $pp$ collisions at the LHC

Cited by in corpus (1)

• Quantum local-equilibrium state with fixed multiplicity constraint and Bose-Einstein momentum correlations