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Search for a common baryon source in high-multiplicity pp collisions at the LHC

Acharya S.
•
Adamova D.
•
Adler A.
altro
Zurlo N.
2020
  • journal article

Periodico
PHYSICS LETTERS. SECTION B
Abstract
We report on the measurement of the size of the particle-emitting source from two-baryon correlations with ALICE in high-multiplicity pp collisions at s=13 TeV. The source radius is studied with low relative momentum p–p, p ̅–p ̅, p–Λ, and p ̅–Λ ̅ pairs as a function of the pair transverse mass mT considering for the first time in a quantitative way the effect of strong resonance decays. After correcting for this effect, the radii extracted for pairs of different particle species agree. This indicates that protons, antiprotons, Λ s, and Λ ̅ s originate from the same source. Within the measured mT range (1.1–2.2) GeV/c2the invariant radius of this common source varies between 1.3 and 0.85 fm. These results provide a precise reference for studies of the strong hadron–hadron interactions and for the investigation of collective properties in small colliding systems.
DOI
10.1016/j.physletb.2020.135849
WOS
WOS:000612225400003
Archivio
http://hdl.handle.net/11368/2980572
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85093678392
https://www.sciencedirect.com/science/article/pii/S0370269320306523?via=ihub
Diritti
open access
license:creative commons
license uri:http://creativecommons.org/licenses/by/4.0/
FVG url
https://arts.units.it/bitstream/11368/2980572/1/PLB_811(2020)135849_1-13.pdf
Soggetti
  • Hadron - hadron react...

  • LHC

Scopus© citazioni
20
Data di acquisizione
Jun 14, 2022
Vedi dettagli
Web of Science© citazioni
35
Data di acquisizione
Mar 25, 2024
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