Study of interference effects in the search for flavour-changing neutral current interactions involving the top quark and a photon or a $Z$ boson at the LHC
| Autor: | Barros, Maura, Castro, Nuno Filipe, Erdmann, Johannes, Geßner, Gregor, Kröninger, Kevin, La Cagnina, Salvatore, Peixoto, Ana |
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| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Eur. Phys. J. Plus 135 (2020) 339 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1140/epjp/s13360-020-00346-3 |
| Popis: | Flavour-changing neutral-current interactions of the top quark can be searched for in top-quark pair production with one top quark decaying to an up-type quark and a neutral boson, and they can be searched for in the single production of a top quark in association with such a boson. Both processes interfere if an additional up-type quark is produced in the case of single production. The impact of these interference effects on searches for flavour-changing neutral currents at the LHC is studied for the case where the neutral boson is a photon or a $Z$ boson. Interference effects are found to be smaller than variations of the renormalisation and factorisation scales. Comment: 8 pages, 3 figures, 2 tables |
| Databáze: | arXiv |
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