Top quark mass measurement with ATLAS
Antoine Marzin
TL;DR
This paper summarizes the early ATLAS measurements of the top quark mass in the lepton plus jets channel, achieving a precision of 1 to 3.5 GeV depending on jet energy scale uncertainties.
Contribution
It presents the initial measurement approach and expected precision for the top quark mass using early ATLAS data in the lepton plus jets channel.
Findings
Achieved a top quark mass measurement precision of 1 to 3.5 GeV.
Demonstrated the feasibility of using invariant mass of three jets for mass estimation.
Highlighted the impact of jet energy scale uncertainties on measurement accuracy.
Abstract
The top quark mass measurement with ATLAS in the lepton plus jets channel is summarized from the perspective of the early data. Using the invariant mass of the three jets arising from the hadronic side as the estimator of the top quark mass, a precision of the order of 1 to 3.5 GeV on the top quark mass measurement should be achievable, assuming a jet energy scale uncertainty of 1 to 5%.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Particle Detector Development and Performance · Distributed and Parallel Computing Systems