Precision Measurement of the W-Boson Mass: Theoretical Contributions and Uncertainties
Carlo Michel Carloni Calame, Mauro Chiesa, Homero Martinez, Guido, Montagna, Oreste Nicrosini, Fulvio Piccinini, Alessandro Vicini
TL;DR
This paper analyzes electroweak, QED, and QCD corrections affecting the precise measurement of the W-boson mass at hadron colliders, providing updated estimates of theoretical uncertainties to improve measurement accuracy.
Contribution
It offers a comprehensive analysis of higher-order corrections and uncertainties, guiding more precise W-boson mass measurements at colliders.
Findings
Quantified impact of NLO electroweak and QCD corrections on M_W
Estimated main theoretical uncertainties of perturbative origin
Provided guidelines for systematic uncertainty assessment at colliders
Abstract
We perform a comprehensive analysis of electroweak, QED and mixed QCD-electroweak corrections underlying the precise measurement of the W-boson mass M_W at hadron colliders. By applying a template fitting technique, we detail the impact on M_W of next-to-leading order electroweak and QCD corrections, multiple photon emission, lepton pair radiation and factorizable QCD-electroweak contributions. As a by-product, we provide an up-to-date estimate of the main theoretical uncertainties of perturbative nature. Our results can serve as a guideline for the assessment of the theoretical systematics at the Tevatron and LHC and allow a more robust precision measurement of the W-boson mass at hadron colliders.
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