Ultraboosted Zt and γt production at the HL-LHC and FCC-hh

• Published in: The European physical journal. C, Particles and fields Vol. 77; no. 11; pp. 1 - 7
• Main Author: Aguilar–Saavedra, J. A.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.11.2017; Springer Nature B.V
• Subjects: Astronomy; Astrophysics and Cosmology; Elementary Particles; Hadrons; Heavy Ions; Large Hadron Collider; Luminosity; Measurement Science and Instrumentation; Nuclear Energy; Nuclear Physics; Physics; Physics and Astronomy; Quantum Field Theories; Quantum Field Theory; Regular Article - Theoretical Physics; Sensitivity; String Theory
• ISSN: 1434-6044; 1434-6052
• DOI: 10.1140/epjc/s10052-017-5375-7

Searches for anomalous Zt and γ t production provide an excellent probe of flavour-changing top interactions when the energies considered are very large. In this note we estimate the sensitivity to these interactions at the high-luminosity phase of the LHC and a future 100 TeV pp collider (FCC-hh). For the LHC, the expected limits on t → u Z / u γ branching ratios from Zt and γ t production will reach the 10 - 5 level, one order of magnitude better than the existing projections for t → u Z from t t ¯ production. For the FCC-hh, the limits on t → u Z / u γ could reach an impressive sensitivity at the 10 - 6 level, with limits on t → c Z / c γ at the 10 - 5 level.