Three-pion Bose-Einstein correlations measured in proton-proton collisions

Abstract

A study on the Bose-Einstein correlations for triplets of same-sign pions is presented. The analysis is performed using proton-proton collisions at a centre-of-mass energy of $\sqrt{s}$ = 7 TeV, recorded by the LHCb experiment, corresponding to an integrated luminosity of 1.0 fb${}^{-1}$. For the first time, the results are interpreted in the core-halo model. The parameters of the model are determined in regions of charged-particle multiplicity. This measurement provides insight into the nature of hadronisation in terms of coherence, showing a coherent emission of pions.

arXiv commentAll figures and tables, along with machine-readable versions and any supplementary material and additional information, are available at https://lbfence.cern.ch/alcm/public/analysis/full-details/3759/ (LHCb public pages)

References in corpus (15)

• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• A Brief Introduction to PYTHIA 8.1
• LHCb Detector Performance
• Femtoscopy in Relativistic Heavy Ion Collisions: Two Decades of Progress
• Performance of the LHCb Outer Tracker
• Precision luminosity measurements at LHCb
• Bose-Einstein correlations for Levy stable source distributions
• Bose-Einstein and Fermi-Dirac Interferometry in Particle Physics
• HBT Correlators -- Current Formalism vs. Wigner Function Formulation
• Bose-Einstein Correlations for Systems with Large Halo
• Techniques for multiboson interferometry
• Bose-Einstein correlations in charged kaon pairs from Z0 decays into two hadronic jets
• Bose-Einstein correlations and thermal cluster formation in high-energy collisions
• Two- and three-pion Levy femtoscopy with PHENIX