Strangeness enhancement and flow-like effects in $e^{+}{e}^{-}$ annihilation at high parton density

Abstract

Strangeness enhancement and collective flow are considered signatures of the quark gluon plasma formation. These phenomena have been detected not only in relativistic heavy ion collisions but also in high energy, high multiplicity events of proton-proton and proton-nucleus ("small systems") scatterings. Indeed, a universal behavior emerges by considering the parton density in the transverse plane as the dynamical quantity to specify the initial condition of the collisions. On the other hand, $e^{+}{e}^{-}$ annihilation data at LEP and lower energies indicate that there is no strangeness enhancement and no flow-like effect. We show that the parton density in the transverse plane generated in $e^{+}{e}^{-}$ annihilation at the available energy is too low to expect such effects. The event-by-event multiplicity where strangeness suppression and flow-like phenomenon could show up in $e^{+}{e}^{-}$ is evaluated.

References in corpus (33)

• Observation of Long-Range Near-Side Angular Correlations in Proton-Proton Collisions at the LHC
• Decoding the phase structure of QCD via particle production at high energy
• Enhanced production of multi-strange hadrons in high-multiplicity proton-proton collisions
• Bulk Properties of the Medium Produced in Relativistic Heavy-Ion Collisions from the Beam Energy Scan Program
• Observation of Associated Near-side and Away-side Long-range Correlations in sqrt(s_NN)=5.02 TeV Proton-lead Collisions with the ATLAS Detector
• Multiplicity Dependence of Pion, Kaon, Proton and Lambda Production in p-Pb Collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Evidence for collectivity in pp collisions at the LHC
• Observation of long-range elliptic anisotropies in $\sqrt{s}=$13 and 2.76 TeV $pp$ collisions with the ATLAS detector
• Creating small circular, elliptical, and triangular droplets of quark-gluon plasma
• Observing Long Colour Flux Tubes in SU(2) Lattice Gauge Theory
• Phobos results on charged particle multiplicity and pseudorapidity distributions in Au+Au, Cu+Cu, d+Au, and p+p collisions at ultra-relativistic energies
• Initial state geometry and the role of hydrodynamics in proton-proton, proton-nucleus and deuteron-nucleus collisions
• Measurement of long-range near-side two-particle angular correlations in pp collisions at sqrt(s) = 13 TeV
• Thermal Hadronization and Hawking-Unruh Radiation in QCD
• Hadron Formation in Relativistic Nuclear Collisions and the QCD Phase Diagram
• Charged-Particle Multiplicity in Proton-Proton Collisions
• Experimental overview on small collision systems at the LHC
• The Thermal Production of Strange and Non-Strange Hadrons in e+e- Collisions
• Do nuclear collisions create a locally equilibrated quark-gluon plasma?
• Transverse Momentum of Protons, Pions and Kaons in High Multiplicity pp and pA Collisions: Evidence for the Color Glass Condensate?
• Measurements of two-particle correlations in $e^{+}{e}^{-}$ collisions at 91 GeV with ALEPH archived data
• Gluon production, cooling and entropy in nuclear collisions
• Intrinsic Fluctuations of the Proton Saturation Momentum Scale in High Multiplicity p+p Collisions
• Statistical hadronisation phenomenology
• Centrality dependence of midrapidity density from GeV to TeV heavy-ion collisions in the effective-energy universality picture of hadroproduction
• An introduction to the Statistical Hadronization Model
• Are minimal conditions for collectivity met in e+e- collisions?
• Universality in Hadronic and Nuclear Collisions at High Energy
• Universal Strangeness Production in Hadronic and Nuclear Collisions
• Scaling properties of fractional momentum loss of high-pT hadrons in nucleus-nucleus collisions at $\sqrt{s_{{}_{NN}}}$ from 62.4 GeV to 2.76 TeV
• Strangeness Production in AA and pp Collisions
• Strangeness Production and Color Deconfinement
• Addendum to Strangeness Production and Color Deconfinement

Cited by in corpus (4)

• Emergence of long-range angular correlations in low-multiplicity proton-proton collisions
• Long-range near-side correlation in $e^{+}{e}^{-}$ Collisions at 183-209 GeV with ALEPH Archived Data
• Measurement of Two-Particle Correlations of Hadrons in $e^{+}{e}^{-}$ Collisions at Belle
• Two-particle angular correlations in $e^{+}{e}^{-}$ collisions to hadronic final states in two reference coordinates at Belle