Bose-Einstein correlations of same-sign charged pions in the forward region in $pp$ collisions at $\sqrt{s}$ = 7 TeV

Abstract

Bose-Einstein correlations of same-sign charged pions, produced in proton-proton collisions at a 7 TeV centre-of-mass energy, are studied using a data sample collected by the LHCb experiment. The signature for Bose-Einstein correlations is observed in the form of an enhancement of pairs of like-sign charged pions with small four-momentum difference squared. The charged-particle multiplicity dependence of the Bose-Einstein correlation parameters describing the correlation strength and the size of the emitting source is investigated, determining both the correlation radius and the chaoticity parameter. The measured correlation radius is found to increase as a function of increasing charged-particle multiplicity, while the chaoticity parameter is seen to decrease.

arXiv commentAll figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2017-025.html

References in corpus (30)

• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• A Brief Introduction to PYTHIA 8.1
• The LHCb Trigger and its Performance in 2011
• Performance of the LHCb RICH detector at the LHC
• Performance of the LHCb Vertex Locator
• Two-pion Bose-Einstein correlations in central Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Performance of the LHCb Outer Tracker
• Performance of the LHCb muon system
• Precision luminosity measurements at LHCb
• The physics of Hanbury Brown--Twiss intensity interferometry: from stars to nuclear collisions
• Femtoscopy of pp collisions at $\sqrt{s}$=0.9 and 7 TeV at the LHC with two-pion Bose-Einstein correlations
• Bose-Einstein correlations for Levy stable source distributions
• Measurement of Bose-Einstein correlations with first CMS data
• Measurement of Bose-Einstein Correlations in pp Collisions at sqrt(s)=0.9 and 7 TeV
• Two-particle Bose-Einstein correlations in $pp$ collisions at $\sqrt{\mathbf{s}}=$ 0.9 and 7 TeV measured with the ATLAS detector
• Pion femtoscopy in p+p collisions at sqrt(s)=200 GeV
• Transverse and Longitudinal Bose Einstein Correlations in hadronic Z0 Decays
• Measurement of charged particle multiplicities and densities in $pp$ collisions at $\sqrt{s}=7$TeV in the forward region
• Measurement of an Elongation of the Pion Source in Z Decays
• Test of the \boldmath{$\tau$}-Model of Bose-Einstein Correlations and Reconstruction of the Source Function in Hadronic Z-boson Decay at LEP
• K${}_s^0$K${}_s^0$ correlations in pp collisions at $\sqrt{s}=7$ TeV from the LHC ALICE experiment
• Bose-Einstein Correlations of Neutral and Charged Pions in Hadronic Z Decays
• The dependence of the emission size on the hadron mass
• Bose-Einstein Correlations in a Space-Time Approach to e+ e- Annihilation into Hadrons
• Mass dependence of HBT correlations in e^+e^- annihilation
• Multiplicity dependence of identical particle correlations in the quantum optical approach
• Bose-Einstein Correlations in Deep Inelastic ep Scattering at HERA
• Multiplicity dependence of correlation functions in \bar{p}p reactions at sqrt(s) = 630 GeV
• Bose-Einstein Correlations of pi0 Pairs from Hadronic Z0 Decays

Cited by in corpus (7)

• 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
• Analysis of Bose-Einstein correlation at 7 TeV by LHCb collaboration based on stochastic approach
• Inclusive spectra and Bose-Einstein correlations in small thermal quantum systems
• Study of the Bose-Einstein correlations of same-sign pions in proton-lead collisions
• Bose-Einstein correlations and b-bbar correlations in pp collisions with LHCb
• Highlights from the LHCb experiment