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Production of the ρ(770)0 meson in pp and Pb-Pb collisions at √sNN = 2.76 TeV

Acharya S.
•
Acosta F. T. -.
•
Adamova D.
altro
Zou S.
2019
  • journal article

Periodico
PHYSICAL REVIEW C
Abstract
The production of the ρ(770)0 meson has been measured at midrapidity (|y| < 0.5) in pp and centrality differential Pb-Pb collisions at √sNN = 2.76 TeV with the ALICE detector at the Large Hadron Collider. The particles have been reconstructed in the ρ(770)0 → π+π− decay channel in the transverse-momentum (pT ) range 0.5–11 GeV/c. A centrality-dependent suppression of the ratio of the integrated yields 2ρ(770)0/(π+ + π−) is observed. The ratio decreases by ∼40% from pp to central Pb-Pb collisions. A study of the pT -differential 2ρ(770)0/(π+ + π−) ratio reveals that the suppression occurs at low transverse momenta, pT < 2 GeV/c. At higher momentum, particle ratios measured in heavy-ion and pp collisions are consistent. The observed suppres- sion is very similar to that previously measured for the K∗(892)0/K ratio and is consistent with EPOS3 predictions that may imply that rescattering in the hadronic phase is a dominant mechanism for the observed suppression.
DOI
10.1103/PhysRevC.99.064901
WOS
WOS:000470857000003
Archivio
http://hdl.handle.net/11368/2948831
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85067416487
https://journals.aps.org/prc/abstract/10.1103/PhysRevC.99.064901
Diritti
open access
license:creative commons
license uri:http://creativecommons.org/licenses/by/4.0/
FVG url
https://arts.units.it/bitstream/11368/2948831/1/PRC_99(2019)064901_1-20.pdf
Soggetti
  • BOSE-EINSTEIN CORRELA...

  • PROTON-PROTON COLLISI...

  • DIRECT PHOTON PRODUCT...

  • AU COLLISIONS

  • RESONANCE PRODUCTION

  • CENTRALITY DEPENDENCE...

  • INCLUSIVE PRODUCTION

  • ROOT-S(NN)=200 GEV

  • HADRON-PRODUCTION

  • P+P COLLISIONS

Scopus© citazioni
22
Data di acquisizione
Jun 14, 2022
Vedi dettagli
Web of Science© citazioni
25
Data di acquisizione
Mar 28, 2024
Visualizzazioni
2
Data di acquisizione
Apr 19, 2024
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