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Observation of abnormal suppression of f0(980) production in p–Pb collisions at √sNN = 5.02 TeV

Acharya, S.
•
Adamová, D.
•
Aglieri Rinella, G.
altro
Zurlo, N.
2024
  • journal article

Periodico
PHYSICS LETTERS. SECTION B
Abstract
The dependence of f0(980) production on the final-state charged-particle multiplicity in p–Pb collisions at √sNN =5.02 TeV is reported. The production of f0(980) is measured with the ALICE detector via the f0(980) → π+π− decay channel in a midrapidity region of −0.5 <y <0. Particle yield ratios of f0(980) to π and K∗(892)0 are found to be decreasing with increasing charged-particle multiplicity. The magnitude of the suppression of the f0(980)/π and f0(980)/K∗(892)0 yield ratios is found to be dependent on the transverse momentum pT, suggesting different mechanisms responsible for the measured effects. Furthermore, the nuclear modification factor QpPb of f0(980) is measured in various multiplicity ranges. The QpPb shows a strong suppression of the f0(980) production in the pT region up to about 4 GeV/c. The results on the particle yield ratios and QpPb for f0(980) may help to understand the late hadronic phase in p–Pb collisions and the nature of the internal structure of f0(980) particle.
DOI
10.1016/j.physletb.2024.138665
WOS
WOS:001261208400001
Archivio
https://hdl.handle.net/11368/3095927
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85192448794
https://www.sciencedirect.com/science/article/pii/S0370269324002235
Diritti
open access
license:creative commons
license uri:http://creativecommons.org/licenses/by/4.0/
FVG url
https://arts.units.it/bitstream/11368/3095927/1/PLB_853(2024)138665_1-15.pdf
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