Name: ALICE_2019_I1672860
Year: 2019
Summary: Rho meson production in pp and Pb-Pb at 2.76 TeV
Experiment: ALICE
Collider: LHC
InspireID: 1672860
Status: VALIDATED
Authors:
 - Enrico Fragiacomo <enrico.fragiacomo@ts.infn.it>
References:
 - 'Phys. Rev. C 99, 064901'
 - 'DOI:10.1103/PhysRevC.99.064901'
 - 'arXiv:1805.04365'
 - 'ALICE-3181'
BibKey: ALICE:2018qdv
BibTex: '@article{ALICE:2018qdv,
    author = "Acharya, Shreyasi and others",
    collaboration = "ALICE",
    title = "{Production of the $\rho$(770)${^{0}}$ meson in pp and Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV}",
    eprint = "1805.04365",
    archivePrefix = "arXiv",
    primaryClass = "nucl-ex",
    reportNumber = "CERN-EP-2018-106",
    doi = "10.1103/PhysRevC.99.064901",
    journal = "Phys. Rev. C",
    volume = "99",
    number = "6",
    pages = "064901",
    year = "2019"
}'
Beams: [ [P,P], [PB,PB] ]
Energies: [ 2760, 574080 ]
Luminosity_fb: [[1.1e-6],[4.4e-9]]
Reentrant: true
Description:
  'The production of the $\rho(770)0$ meson has been measured at midrapidity ($|y|<0.5$) in pp and centrality differential
  Pb-Pb collisions at $\sqrt{s_\text{NN}}= 2.76$ TeV with the ALICE detector at the Large Hadron Collider. The particles have
  been reconstructed in the $\rho(770)0\to\pi^{++}\pi^{-}$ decay channel in the transverse-momentum ($p_\text{T}$) range 0.511 GeV/c.
  A centrality-dependent suppression of the ratio of the integrated yields $2\rho(770)0/(\pi^{++}\pi^{-})$ is observed. The ratio
  decreases by $\sim40\%$ from pp to central Pb-Pb collisions. A study of the $p_\mathrm{T}$-differential $2\rho(770)0/(\pi^{++}\pi^{-})$
  ratio reveals that the suppression occurs at low transverse momenta, $p_\mathrm{T}<2$ GeV/c. At higher momentum, particle ratios
  measured in heavy-ion and pp collisions are consistent. The observed suppression is very similar to that previously measured for
  the $K^\ast(892)0/K$ ratio and is consistent with EPOS3 predictions that may imply that rescattering in the hadronic phase is a
  dominant mechanism for the observed suppression.'
