TOP-MASS MEASUREMENTS FROM DØ

This review provides an overview of the conceptual issues regarding the interpretation of so-called direct top quark mass measurements, which are based on the kinematic reconstruction of top quark decay products at the Large Hadron Collider (LHC). These measurements quote the top mass parameter [Formula: see text] of Monte Carlo event generators with current uncertainties of around 0.5 GeV. The problem of finding a rigorous relation between [Formula: see text] and top mass renormalization schemes defined in field theory is unresolved to date and touches perturbative as well as nonperturbative aspects and the limitations of state-of-the-art Monte Carlo event generators. I review the status of LHC top mass measurements, illustrate how conceptual limitations enter the picture, and explain a controversy that has permeated the community in the context of the interpretation problem related to [Formula: see text]. I then summarize recent advances in acquiring first principles insights and outline what else has to be understood to fully resolve the issue. I conclude with recommendations on how to deal with the interpretation problem for the time being when making top mass–dependent theoretical predictions.

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Investigation of top mass measurements with the ATLAS detector at LHC

The European Physical Journal C ◽

10.1140/epjcd/s2004-02-004-8 ◽

2005 ◽

Vol 39 (S2) ◽

pp. 63-90 ◽

Cited By ~ 26

Author(s):

I. Borjanović ◽

I. Efthymiopoulos ◽

F. Fassi ◽

P. Grenier ◽

P. Homola ◽

...

Keyword(s):

Atlas Detector ◽

Mass Measurements ◽

Top Mass

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Addendum to: A theoretical study of top-mass measurements at the LHC using NLO+PS generators of increasing accuracy

The European Physical Journal C ◽

10.1140/epjc/s10052-019-7336-9 ◽

2019 ◽

Vol 79 (10) ◽

Cited By ~ 1

Author(s):

Silvia Ferrario Ravasio ◽

Tomáš Ježo ◽

Paolo Nason ◽

Carlo Oleari

Keyword(s):

Parton Shower ◽

Theoretical Study ◽

Leading Order ◽

Hadron Colliders ◽

Mass Measurements ◽

Link Type ◽

The Impact ◽

Top Mass ◽

C 78

Abstract This paper is a follow-up of Ref. Ferrario Ravasio et al. (Eur Phys J C 78:458, 2018. arXiv:1801.03944), where we studied the impact of next-to-leading order calculations merged with parton shower generators (NLO+PS) of increasing accuracy in the extraction of the top mass at hadron colliders. Here we examined results obtained with the older (fortran-based) shower generators and . Our findings are in line with what we found in Ref. Ferrario Ravasio et al. (2018) with the new, c++-based, generators and .

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