Scalar Top Quark Studies with Various Visible Energies
A. Sopczak, M. Carena, A. Finch, A. Freitas, C. Milstene, H. Nowak

TL;DR
This paper investigates the potential of the International Linear Collider to precisely measure scalar top quark properties, especially in scenarios with small mass differences, which are crucial for understanding dark matter and baryogenesis.
Contribution
It presents detailed simulation studies of scalar top quark detection at the ILC across various energy regimes, including small mass differences, using advanced detector models and flavor tagging techniques.
Findings
Sensitivity to mass differences down to 5 GeV
Feasibility of precise scalar top mass measurements
Implications for dark matter relic density predictions
Abstract
The precision determination of scalar top quark properties will play an important role at a future International Linear Collider (ILC). Recent and ongoing studies are discussed for different experimental topologies in the detector. First results are presented for small mass differences between the scalar top and neutralino masses. This corresponds to a small expected visible energy in the detector. An ILC will be a unique accelerator to explore this scenario. In addition to finding the existence of light stop quarks, the precise measurement of their properties is crucial for testing their impact on the dark matter relic abundance and the mechanism of electroweak baryogenesis. Significant sensitivity for mass differences down to 5 GeV are obtained. The simulation is based on a fast and realistic detector simulation. A vertex detector concept of the Linear Collider Flavor Identification…
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Particle Detector Development and Performance · Dark Matter and Cosmic Phenomena
