Jet-like correlations with respect to K${}_{\mathrm{S}}^0$ and $\Lambda$ ($\bar{\Lambda }$) in pp and central Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV

Abstract

Two-particle correlations with ${\mathrm{K}}_{\mathrm{S}}^0$, $\Lambda$/$\bar{\Lambda }$, and charged hadrons as trigger particles in the transverse momentum range $8<p_{\mathrm{T},\mathrm{trig}}<16$ GeV/$c$, and associated charged particles within $1<p_{\mathrm{T},\mathrm{assoc}}<8$ GeV/$c$, are studied at mid-rapidity in pp and central Pb-Pb collisions at a centre-of-mass energy per nucleon-nucleon collision $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV with the ALICE detector at the LHC. After subtracting the contributions of the flow background, the per-trigger yields are extracted on both the near and away sides, and the ratio in Pb-Pb collisions with respect to pp collisions ($I_{\mathrm{AA}}$) is computed. The per-trigger yield in Pb-Pb collisions on the away side is strongly suppressed to the level of $I_{\mathrm{AA}}\approx 0.6$ for $p_{\mathrm{T},\mathrm{assoc}}>3$ GeV/$c$ as expected from strong in-medium energy loss, while an enhancement develops at low $p_{\mathrm{T},\mathrm{assoc}}$ on both the near and away sides, reaching $I_{\mathrm{AA}}\approx 1.8$ and $2.7$ respectively. These findings are in good agreement with previous ALICE measurements from two-particle correlations triggered by neutral pions (${\pi }^0$-h) and charged hadrons (h-h) in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV. Moreover, the correlations with ${\mathrm{K}}_{\mathrm{S}}^0$ mesons and $\Lambda$/$\bar{\Lambda }$ baryons as trigger particles are compared to those of inclusive charged hadrons. The results are compared with the predictions of Monte Carlo models.

arXiv comment27 pages, 5 captioned figures, 4 tables, authors from page 22, published version, figures at http://alice-publications.web.cern.ch/node/8602

References in corpus (58)

• A Brief Introduction to PYTHIA 8.1
• Experimental and Theoretical Challenges in the Search for the Quark Gluon Plasma: The STAR Collaboration's Critical Assessment of the Evidence from RHIC Collisions
• Formation of dense partonic matter in relativistic nucleus-nucleus collisions at RHIC: Experimental evaluation by the PHENIX collaboration
• Quark Gluon Plasma an Color Glass Condensate at RHIC? The perspective from the BRAHMS experiment
• The PHOBOS Perspective on Discoveries at RHIC
• A Multi-Phase Transport Model for Relativistic Heavy Ion Collisions
• Tuning PYTHIA 8.1: the Monash 2013 Tune
• Suppression of Hadrons with Large Transverse Momentum in Central Au+Au Collisions at $sqrt {s sub {sub {NN}}}_ = 130 GeV
• Performance of the ALICE Experiment at the CERN LHC
• HIJING 1.0: A Monte Carlo Program for Parton and Particle Production in High Energy Hadronic and Nuclear Collisions
• Long-range angular correlations on the near and away side in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Observation of a Centrality-Dependent Dijet Asymmetry in Lead-Lead Collisions at sqrt(S(NN))= 2.76 TeV with the ATLAS Detector at the LHC
• Multiple Collisions and Induced Gluon Bremsstrahlung in QCD
• Observation and studies of jet quenching in PbPb collisions at nucleon-nucleon center-of-mass energy = 2.76 TeV
• Suppression of charged particle production at large transverse momentum in central Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV
• Study of high-pT charged particle suppression in PbPb compared to pp collisions at sqrt(sNN)=2.76 TeV
• The theory and phenomenology of perturbative QCD based jet quenching
• K${}_{\mathrm{S}}^0$ and $\mathrm{\Lambda }$ production in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Identified baryon and meson distributions at large transverse momenta from Au+Au collisions at $\sqrt{s_{{}_{NN}}}=200$ GeV
• Jet momentum dependence of jet quenching in PbPb collisions at sqrt(sNN)=2.76 TeV
• Jet size dependence of single jet suppression in lead-lead collisions at sqrt(s(NN)) = 2.76 TeV with the ATLAS detector at the LHC
• Production of charged pions, kaons and protons at large transverse momenta in pp and Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Production of charged pions, kaons and (anti-)protons in Pb-Pb and inelastic pp collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Suppression of high transverse momentum D mesons in central Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV
• Studies of jet quenching using isolated-photon + jet correlations in PbPb and pp collisions at sqrt(s[NN]) = 2.76 TeV
• Transverse momentum distribution and nuclear modification factor of charged particles in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Measurement of jet suppression in central Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Measurement of jet fragmentation into charged particles in pp and PbPb collisions at sqrt(s[NN]) = 2.76 TeV
• Dependence on pseudorapidity and centrality of charged hadron production in PbPb collisions at a nucleon-nucleon centre-of-mass energy of 2.76 TeV
• Pb-Pb collisions at $\sqrt{s_{NN}}=2.76$ TeV in a multiphase transport model
• Centrality dependence of the nuclear modification factor of charged pions, kaons, and protons in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV
• Particle-yield modification in jet-like azimuthal di-hadron correlations in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Large Angle Hadron Correlations from Medium-Induced Gluon Radiation
• Measurement of jet quenching with semi-inclusive hadron-jet distributions in central Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Identified hadron compositions in p+p and Au+Au collisions at high transverse momenta at $\sqrt{s_{{}_{NN}}}=200$ GeV
• Measurements of inclusive jet spectra in pp and central Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Anisotropic flow of identified particles in Pb-Pb collisions at $\sqrt{{\text{s}}_{\mathrm{NN}}}=5.02$ TeV
• Evolution of the jet opening angle distribution in holographic plasma
• Cluster properties from two-particle angular correlations in p+p collisions at $\sqrt{s}$ = 200 and 410 GeV
• Factorization of jet cross sections in heavy-ion collisions
• Multiplicity dependence of jet-like two-particle correlations in p-Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV
• Constraining the Chiral Magnetic Effect with charge-dependent azimuthal correlations in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 and 5.02 TeV
• Suppression of high transverse momenta hadrons in Pb+Pb collisions at LHC
• Jet conversions in a quark-gluon plasma
• Measurement of azimuthal correlations of D mesons and charged particles in pp collisions at $\sqrt{s}=7$ TeV and p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV
• Jet-like correlations with neutral pion triggers in pp and central Pb-Pb collisions at 2.76 TeV
• ZYAM and ${\mathbf{v}}_2$: Underestimating jet yields from dihadron azimuth correlations
• Measurement of charged jet cross section in pp collisions at $\sqrt{s}=5.02$ TeV
• In-medium modification of dijets in PbPb collisions at $\sqrt{s_{\mathrm{NN}}}=$ 5.02 TeV
• Measurements of the suppression and correlations of dijets in Pb+Pb collisions at $\sqrt{s_{{}_{\text{NN}}}}$ = 5.02 TeV
• Particle multiplicity of unbiased gluon jets from e+e- three-jet events
• Evolution of the longitudinal and azimuthal structure of the near-side jet peak in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV
• Production of K^0_S and Lambda in Quark and Gluon Jets from Z^0 Decay
• Jet fragmentation transverse momentum measurements from di-hadron correlations in $\sqrt{s}$ = 7 TeV pp and $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV p-Pb collisions
• K${}_{\mathrm{S}}^0$- and (anti-)$\Lambda$-hadron correlations in pp collisions at $\sqrt{s}=13$ TeV
• Jet-hadron correlations measured relative to the second order event plane in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• System of evolution equations for quark and gluon jet quenching with broadening
• Calibration of the momentum scale of a particle physics detector using the Armenteros-Podolanski plot

Cited by in corpus (1)

• Investigating strangeness enhancement in jet and medium via $\varphi$(1020) production in p$-$Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV