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Title: First Measurement of Antideuteron Number Fluctuations at Energies Available at the Large Hadron Collider

Journal Article · · Physical Review Letters
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  1. Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

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 (|η|<0.8) as a function of collision centrality in Pb-Pb collisions at $$\sqrt{^sNN}$$=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.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP)
Contributing Organization:
ALICE Collaboration
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
2000304
Journal Information:
Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 4 Vol. 131; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (35)

Thermal-FIST: A package for heavy-ion collisions and hadronic equation of state journal November 2019
The ALICE TPC, a large 3-dimensional tracking device with fast readout for ultra-high multiplicity events
  • Alme, J.; Andres, Y.; Appelshäuser, H.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 622, Issue 1 https://doi.org/10.1016/j.nima.2010.04.042
journal October 2010
Relativistic nuclear collisions: Establishing a non-critical baseline for fluctuation measurements journal April 2021
Production of light nuclei, hypernuclei and their antiparticles in relativistic nuclear collisions journal March 2011
Multiplicity dependence of light nuclei production at LHC energies in the canonical statistical model journal October 2018
Suppression of light nuclei production in collisions of small systems at the Large Hadron Collider journal May 2019
The thermal proton yield anomaly in Pb-Pb collisions at the LHC and its resolution journal May 2019
Global baryon number conservation encoded in net-proton fluctuations measured in Pb–Pb collisions at s NN = 2.76 TeV journal August 2020
Search for a common baryon source in high-multiplicity pp collisions at the LHC journal December 2020
Towards solving the puzzle of high temperature light (anti)-nuclei production in ultra-relativistic heavy ion collisions journal April 2022
Event-by-event antideuteron multiplicity fluctuation in Pb+Pb collisions at sNN=5.02 TeV journal May 2023
Decoding the phase structure of QCD via particle production at high energy journal September 2018
Deuteron formation mechanism journal September 1987
Volume fluctuation and auto-correlation effects in the moment analysis of net-proton multiplicity distributions in heavy-ion collisions journal September 2013
The ALICE experiment at the CERN LHC journal August 2008
Performance of the ALICE VZERO system journal October 2013
Canonical statistical model analysis of p − p , p -Pb, and Pb-Pb collisions at energies available at the CERN Large Hadron Collider journal November 2019
Production of charged pions, kaons, and (anti-)protons in Pb-Pb and inelastic p p collisions at s N N = 5.02 TeV journal April 2020
Factorial cumulants from global baryon number conservation journal December 2020
Multiplicity dependence of (multi)strange baryons in the canonical ensemble with phase shift corrections journal January 2021
Particlization of an interacting hadron resonance gas with global conservation laws for event-by-event fluctuations in heavy-ion collisions journal April 2021
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 journal August 2021
Proton number cumulants and correlation functions in Au-Au collisions at s N N = 7.7 –200 GeV from hydrodynamics journal January 2022
Coalescence and flow in ultrarelativistic heavy ion collisions journal March 1999
Centrality determination of Pb-Pb collisions at s N N = 2.76 TeV with ALICE journal October 2013
Formation of deuterons by coalescence: Consequences for deuteron number fluctuations journal May 2016
More efficient formulas for efficiency correction of cumulants and effect of using averaged efficiency journal June 2017
Cosmic rays, antihelium, and an old navy spotlight journal November 2017
Measurement of the Low-Energy Antideuteron Inelastic Cross Section journal October 2020
Relative particle yield fluctuations in $$\text{ Pb--Pb }$$ Pb--Pb collisions at $$\sqrt{s_\mathrm{{NN}}} =2.76\hbox { TeV}$$ s NN = 2.76 TeV journal March 2019
Performance of the ALICE Time-Of-Flight detector at the LHC journal April 2013
Performance of the ALICE experiment at the CERN LHC journal September 2014
First measurement of antideuteron number fluctuations at energies available at the Large Hadron Collider collection January 2023
Search for a common baryon source in high-multiplicity pp collisions at the LHC collection January 2020
Thermal-FIST: A package for heavy-ion collisions and hadronic equation of state dataset January 2019


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