First measurement of antideuteron number fluctuations at energies available at the Large Hadron Collider

Abstract

The first measurement of event-by-event antideuteron number fluctuations in high energy heavy-ion collisions is presented. The measurements are carried out at midrapidity ($|\eta |<0.8$) as a function of collision centrality in Pb$-$Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV using the ALICE detector. A significant negative correlation between the produced antiprotons and antideuterons is observed in all collision centralities. The results are compared with a state-of-the-art coalescence calculation. While it describes the ratio of higher order cumulants of the antideuteron multiplicity distribution, it fails to describe quantitatively the magnitude of the correlation between antiproton and antideuteron production. On the other hand, thermal-statistical model calculations describe all the measured observables within uncertainties only for correlation volumes that are different with respect to those describing proton yields and a similar measurement of net-proton number fluctuations.

arXiv comment16 pages, 3 captioned figures, authors from page 11, published version, figures at http://alice-publications.web.cern.ch/node/7844

References in corpus (29)

• Performance of the ALICE Experiment at the CERN LHC
• Decoding the phase structure of QCD via particle production at high energy
• The ALICE TPC, a large 3-dimensional tracking device with fast readout for ultra-high multiplicity events
• Centrality determination of Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV with ALICE
• Production of light nuclei, hypernuclei and their antiparticles in relativistic nuclear collisions
• Performance of the ALICE VZERO system
• Coalescence and flow in ultra-relativistic heavy ion collisions
• Production of charged pions, kaons and (anti-)protons in Pb-Pb and inelastic pp collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Thermal-FIST: A package for heavy-ion collisions and hadronic equation of state
• Cumulants and Correlation Functions of Net-proton, Proton and Antiproton Multiplicity Distributions in Au+Au Collisions at energies available at the BNL Relativistic Heavy Ion Collider
• Volume Fluctuation and Autocorrelation Effects in the Moment Analysis of Net-proton Multiplicity Distributions in Heavy-Ion Collisions
• Search for a common baryon source in high-multiplicity pp collisions at the LHC
• Suppression of light nuclei production in collisions of small systems at the Large Hadron Collider
• Canonical statistical model analysis of p-p, p-Pb, and Pb-Pb collisions at the LHC
• Relativistic nuclear collisions: Establishing a non-critical baseline for fluctuation measurements
• Cosmic rays, anti-helium, and an old navy spotlight
• Multiplicity dependence of light nuclei production at LHC energies in the canonical statistical model
• The thermal proton yield anomaly in Pb-Pb collisions at the LHC and its resolution
• More efficient formulas for efficiency correction of cumulants and effect of using averaged efficiency
• Global baryon number conservation encoded in net-proton fluctuations measured in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Proton number cumulants and correlation functions in Au-Au collisions at $\sqrt{s_{\mathrm{NN}}}=7.7-200$ GeV from hydrodynamics
• Multiplicity dependence of (multi-)strange baryons in the canonical ensemble with phase shift corrections
• Particlization of an interacting hadron resonance gas with global conservation laws for event-by-event fluctuations in heavy-ion collisions
• Measurement of the low-energy antideuteron inelastic cross section
• Solving the puzzle of high temperature light (anti)-nuclei production in ultra-relativistic heavy ion collisions
• Relative particle yield fluctuations in Pb-Pb collisions at $\sqrt{{\mathbf{s}}_{\mathrm{NN}}}=2.76$ TeV
• Formation of deuterons by coalescence: Consequences on the deuteron number fluctuations
• Event-by-event anti-deuteron multiplicity fluctuation in Pb+Pb collisions at $\sqrt{s_{NN}}=5.02$ TeV
• Factorial cumulants from global baryon number conservation

Cited by in corpus (10)

• The ALICE experiment: a journey through QCD
• Density correlations under global and local charge conservation
• Elliptic flow of deuterons in ultrarelativistic heavy-ion collisions
• Study of the deuterons emission time in pp collisions at the LHC via kaon-deuteron correlations
• Measurement of the low-energy antitriton inelastic cross section
• Femtoscopic study of the proton-proton and proton-deuteron systems in heavy-ion collisions at the LHC
• Probing strangeness hadronization with event-by-event production of multistrange hadrons
• Measurement of (anti)alpha production in central Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• ToMCCA: A Toy Monte Carlo Coalescence Afterburner
• Accessing the deuteron source with pion-deuteron femtoscopy in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV