Measurements of the production of the W± and Z0 bosons at midrapidity in pp collisions at s=13 TeV with ALICE at the Large Hadron Collider (LHC) are presented. The W± and Z0 bosons are detected via their (di)electronic decay channels, with the electron reconstruction performed in the midrapidity region (|y|<0.6). The pT-integrated and pT-differential production cross sections of electrons from W± decays in the interval 30<60 GeV/c, as well as the pT-integrated production cross section of Z0 bosons, are measured. The results are described by perturbative QCD calculations using different sets of parton distribution functions. The production of W± bosons and azimuthally correlated associated hadrons is also measured as a function of the charged-particle multiplicity for the first time at the LHC. The former increases approximately linearly with the charged-particle multiplicity, while for the latter, there are hints of a faster-than-linear increase. These observations are compared with theoretical calculations.

Measurements of the production of W$$^{\pm }$$ and Z$$^0$$ bosons in pp collisions at $$\sqrt{s} = 13$$ TeV

Barile, F.
Membro del Collaboration Group
;
Colella, D.
Membro del Collaboration Group
;
Colelli, A.
Membro del Collaboration Group
;
Di Bari, D.
Membro del Collaboration Group
;
Mazzilli, M.
Membro del Collaboration Group
;
Nicassio, N.
Membro del Collaboration Group
;
Volpe, G.
Membro del Collaboration Group
;
2026-01-01

Abstract

Measurements of the production of the W± and Z0 bosons at midrapidity in pp collisions at s=13 TeV with ALICE at the Large Hadron Collider (LHC) are presented. The W± and Z0 bosons are detected via their (di)electronic decay channels, with the electron reconstruction performed in the midrapidity region (|y|<0.6). The pT-integrated and pT-differential production cross sections of electrons from W± decays in the interval 30<60 GeV/c, as well as the pT-integrated production cross section of Z0 bosons, are measured. The results are described by perturbative QCD calculations using different sets of parton distribution functions. The production of W± bosons and azimuthally correlated associated hadrons is also measured as a function of the charged-particle multiplicity for the first time at the LHC. The former increases approximately linearly with the charged-particle multiplicity, while for the latter, there are hints of a faster-than-linear increase. These observations are compared with theoretical calculations.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11586/601022
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