First Measurement of the Z -> mu(+) mu(-) Angular Coefficients in the Forward Region of pp Collisions at root s=13 TeV

LHCb collaboration

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

The first study of the angular distribution of mu(+) mu(-) pairs produced in the forward rapidity region via the Drell-Yan reaction pp -> gamma*/Z + X -> l(+) l(-) + X is presented, using data collected with the LHCb detector at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.1 fb(-1). The coefficients of the five leading terms in the angular distribution are determined as a function of the dimuon transverse momentum and rapidity. The results are compared to various theoretical predictions of the Z-boson production mechanism and can also be used to probe transverse-momentum-dependent parton distributions within the proton.
Original languageEnglish
Article number091801
Number of pages11
JournalPhysical Review Letters
Volume129
Issue number9
DOIs
Publication statusPublished - 24 Aug 2022

Keywords

  • DISTRIBUTIONS
  • PAIRS
  • PIONS
  • POLARIZATION
  • TRANSVERSE-MOMENTUM
  • W-BOSON

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