@misc{10481/61536,
year = {2019},
month = {4},
url = {http://hdl.handle.net/10481/61536},
abstract = {New physics can manifest itself by an appreciable increase of the decay rate of
top quarks in rare flavour-changing  final states. Exploiting the large top quark production
rate at the LHC, we bound four-fermion operators contributing to non-resonant t -> l+l-j
using different signal regions of the latest LHC searches for t -> Zj. We also provide
prospects for the high-luminosity LHC to test these as well as four-fermion operators contributing
to t -> bbj, based on improved analysis strategies of existing searches. We single
out all weakly-coupled ultraviolet completions inducing such contact interactions at tree
level and translate the previous bounds to the parameter space of specific complete models.
Being above the TeV, LHC bounds from rare top decays improve over those from flavour
physics, electroweak precision data and other LHC searches in several cases.},
organization = {M.C. is funded by the Royal
Society under the Newton International Fellowship program. The work of J.S. has been
supported by the Spanish MICINN project FPA2013-47836-C3-2-P, the MINECO project
FPA2016-78220-C3-1-P (Fondos FEDER) and the Junta de Andalucía grant FQM101},
publisher = {Springer Nature},
keywords = {Beyond Standard Model},
keywords = {Effective Field Theories},
title = {Constraining four-fermion operators using rare top decays},
doi = {10.1007/JHEP04(2019)014},
author = {Rodríguez Chala, Mikael and Santiago Pérez, José and Spannowsky, Michael},
}