• Browse all
Azimuthal anisotropy of dijet events in PbPb collisions at $\sqrt{s_\mathrm{NN}}$ = 5.02 TeV

The CMS collaboration
Tumasyan, Armen , Adam, Wolfgang , Andrejkovic, Janik Walter , Bergauer, Thomas , Chatterjee, Suman , Damanakis, Konstantinos , Dragicevic, Marko , Escalante Del Valle, Alberto , Hussain, Priya Sajid , Jeitler, Manfred
JHEP 07 (2023) 139, 2023.
https://doi.org/10.17182/hepdata.130961

Abstract (data abstract)
The path-length dependent parton energy loss within the quark-gluon plasma created in lead-lead collisions at $\sqrt{s_{\mathrm{NN}}} = 5.02$ TeV is studied by determining the azimuthal anisotropies for high-$p_{\mathrm{T}}$ dijets. The anisotropies are expressed as the Fourier expansion coefficients $v_{2}$, $v_{3}$, and $v_{4}$. The data were collected by the CMS experiment in 2018 and correspond to an integral luminosity of 1.7 $\mathrm{nb}^{-1}$. Jet-hadron and hadron-hadron correlations from events with back-to-back dijets are constructed as functions of relative azimuthal angle and pseudorapidity between a jet and a hadron and between two hadrons, respectively. Together, these correlations allow for a determination of the dijet $v_{n}$ values assuming factorization. Restricting the analysis to long-range components of the correlations provides robust suppression of background contributions from fragmentation processes. Positive dijet $v_{2}$ values are found that show a strong centrality dependence, consistent with previous high-$p_{\mathrm{T}}$ hadron and inclusive jet measurements. The dijet $v_{3}$ and $v_{4}$ values are consistent with zero, which is also seen for high-$p_{\mathrm{T}}$ hadron $v_{3}$ values in previous studies.

  • Figure 1-0

    Data for the 0-10 % centrality bin from figure 1, located on page 7.

    10.17182/hepdata.130961.v1/t1

    The dijet $v_{n}$ data points factorized using different associated hadron pT bins for 0-10 % centrality bin. The data points...

  • Figure 1-1

    Data for the 10-30 % centrality bin from figure 1, located on page 7.

    10.17182/hepdata.130961.v1/t2

    The dijet $v_{n}$ data points factorized using different associated hadron pT bins for 10-30 % centrality bin. The data points...

  • Figure 1-2

    Data for the 30-50 % centrality bin from figure 1, located on page 7.

    10.17182/hepdata.130961.v1/t3

    The dijet $v_{n}$ data points factorized using different associated hadron pT bins for 30-50 % centrality bin. The data points...

  • Figure 2

    Data from figure 2, located on page 8.

    10.17182/hepdata.130961.v1/t4

    Final dijet $v_{2}$, $v_{3}$ and $v_{4}$ results presented as a function of centrality.

Loading Data...

Ask a Question


Your question will be emailed to those involved with the submission. Please mention the relevant table.


Please log in to HEPData to send a question.