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First measurement of quarkonium polarization in nuclear collisions at the LHC

J/psi invariant mass spectrum in Pb-Pb collisions at sqrt(s_NN) = 5.02 TeV
Energy
5.02 TeV
System
Pb-Pb
Scope: PWG
PWG-DQ (Dileptons and Quarkonia)
Figure image (.eps)
2020-05-24-signal_extraction_example_0.eps
Figure image (.pdf)
2020-05-24-signal_extraction_example_0.pdf
Upsilon(1S) invariant mass spectrum in Pb-Pb collisions at sqrt(s_NN) = 5.02 TeV
Energy
5.02 TeV
System
Pb-Pb
Scope: PWG
PWG-DQ (Dileptons and Quarkonia)
Figure image (.eps)
2020-05-24-signal_extraction_example_Upsilon1S.eps
Figure image (.pdf)
2020-05-24-signal_extraction_example_Upsilon1S.pdf
Fit to the corrected J/psi distribution as a function of cosTheta in the Helicity reference frame at sqrt(s_NN) = 5.02 TeV in Pb-Pb collisions
Energy
5.02 TeV
System
Pb-Pb
Scope: PWG
PWG-DQ (Dileptons and Quarkonia)
Figure image (.eps)
2020-05-24-polarization_fit_cosTheta.eps
Figure image (.pdf)
2020-05-24-polarization_fit_cosTheta.pdf
Fit to the corrected J/psi distribution as a function of phi in the Helicity reference frame at sqrt(s_NN) = 5.02 TeV in Pb-Pb collisions
Energy
5.02 TeV
System
Pb-Pb
Scope: PWG
PWG-DQ (Dileptons and Quarkonia)
Figure image (.eps)
2020-05-24-polarization_fit_phi.eps
Figure image (.pdf)
2020-05-24-polarization_fit_phi.pdf
lambda_Theta, lambda_Phi, lambda_ThetaPhi vs pT in Pb-Pb collisions at sqrt(s_NN) = 5.02 TeV, in the Helicity and Collins-Soper reference frames
Energy
5.02 TeV
System
Pb-Pb
Scope: PWG
PWG-DQ (Dileptons and Quarkonia)
Figure image (.eps)
2020-05-24-polarization_parameters.eps
Figure image (.pdf)
2020-05-24-polarization_parameters.pdf
Sub groups
Supplemental figures: ``First measurement of quarkonium polarization in nuclear collisions at the LHC''