1 Ocak 2023 Dergi makalesi Açık Erişim

CERN İşbirliği

Citation Style Language JSON

{
  "DOI": "10.1016/j.physletb.2023.137782", 
  "abstract": "<p>The study of the azimuthal anisotropy of inclusive muons produced in p\u2013Pb collisions at $\\sqrt{{s}_{\\mathrm{NN}}}=8.16$ TeV, using the ALICE detector at the LHC is reported. The measurement of the second-order Fourier coefficient of the particle azimuthal distribution, ${v}_{2}$, is performed as a function of transverse momentum ${p}_{T}$ in the 0\u201320% high-multiplicity interval at both forward ($2.03&lt;{y}_{\\mathrm{CMS}}&lt;3.53$) and backward ($-4.46&lt;{y}_{\\mathrm{CMS}}&lt;-2.96$) rapidities over a wide ${p}_{T}$ range, $0.5&lt;{p}_{T}&lt;10$ GeV/c, in which a dominant contribution of muons from heavy-flavour hadron decays is expected at ${p}_{T}&gt;2$ GeV/c. The ${v}_{2}$ coefficient of inclusive muons is extracted using two different techniques, namely two-particle cumulants, used for the first time for heavy-flavour measurements, and forward\u2013central two-particle correlations. Both techniques give compatible results. A positive ${v}_{2}$ is measured at both forward and backward rapidities with a significance larger than 4.7\u03c3 and 7.6\u03c3, respectively, in the interval $2&lt;{p}_{T}&lt;6$ GeV/c. Comparisons with previous measurements in p\u2013Pb collisions at $\\sqrt{{s}_{\\mathrm{NN}}}\\phantom{\\rule{0.25em}{0ex}}=\\phantom{\\rule{0.25em}{0ex}}5.02$ TeV, and with AMPT and CGC-based theoretical calculations are discussed. The findings impose new constraints on the theoretical interpretations of the origin of the collective behaviour in small collision systems.</p>", 
  "author": [
    {
      "family": "CERN \u0130\u015fbirli\u011fi"
    }
  ], 
  "container_title": "Physics Letters B", 
  "id": "264382", 
  "issued": {
    "date-parts": [
      [
        2023, 
        1, 
        1
      ]
    ]
  }, 
  "title": "Measurements of azimuthal anisotropies at forward and backward rapidity with muons in high-multiplicity p\u2013Pb collisions at TeV", 
  "type": "article-journal", 
  "volume": "846 C"
}