Determination of the -boson mass at hadron colliders.

Eur Phys J C Part Fields

Dipartimento di Fisica, Università di Milano and INFN, Sezione di Milano, 20133 Milan, Italy.

Published: October 2023

AI Article Synopsis

  • * It discusses the theoretical predictions of this observable, including its robustness at various orders of Quantum Chromodynamics (QCD) and its ability to provide a reliable measurement with minimal uncertainty.
  • * The observable's inclusive nature makes it beneficial for experiments, particularly for analyzing detector effects, and it could significantly improve the experimental accuracy of the -boson mass measurement at the Large Hadron Collider (LHC).

Article Abstract

We introduce an observable relevant for the determination of the -boson mass at hadron colliders. This observable is defined as an asymmetry around the jacobian peak of the charged-lepton transverse-momentum distribution in the charged-current Drell-Yan process. We discuss the observable's theoretical prediction, presenting results at different orders in QCD, and showing its perturbative stability. Its definition as a single scalar number and its linear sensitivity to allow a clean extraction of the latter and a straightforward discussion of the associated theoretical systematics: a perturbative QCD uncertainty of MeV on can be established by means of this observable, relying solely on charged-current Drell-Yan information. Owing to its relatively inclusive nature, the observable displays desirable properties also from the experimental viewpoint, especially for the unfolding of detector effects. We show that a measurement of this observable can lead to a competitive experimental error on at the LHC.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10590315PMC
http://dx.doi.org/10.1140/epjc/s10052-023-12128-zDOI Listing

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