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arXiv · 1303.3758

Top quark mass measurements at and above threshold at CLIC

Katja Seidel·Frank Simon·Michal Tesar·Stephane Poss
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Abstract

We present a study of the expected precision of the top quark mass determination, measured at a linear e+ e- collider based on CLIC technology. GEANT4-based detector simulation and full event reconstruction including realistic physics and beam-induced background levels are used. Two different techniques to measure the top mass are studied: The direct reconstruction of the invariant mass of the top quark decay products and the measurement of the mass together with the strong coupling constant in a threshold scan, in both cases including first studies of expected systematic uncertainties. For the direct reconstruction, experimental uncertainties around 100 MeV are achieved, which are at present not matched by a theoretical understanding on a similar level. With a threshold scan, total uncertainties of around 100 MeV are achieved, including theoretical uncertainties in a well-defined top mass scheme. For the threshold scan, the precision at ILC is also studied to provide a comparison of the two linear collider technologies.

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Katja Seidel, Frank Simon, Michal Tesar, Stephane Poss. 2013-03-15. Top quark mass measurements at and above threshold at CLIC. https://doi.org/10.1140/epjc/s10052-013-2530-7

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