https://doi.org/10.1140/epjc/s10052-015-3649-5
Regular Article - Theoretical Physics
Lepton flavour violating top decays at the LHC
1
CERN PH-TH, 1211, Geneva 23, Switzerland
2
IPNL, CNRS/IN2P3, 4 rue E. Fermi, 69622, Villeurbanne Cedex, France
3
Université Lyon 1, Villeurbanne, France
4
Université de Lyon, 69622, Lyon, France
* e-mail: s.davidson@ipnl.in2p3.fr
Received:
4
August
2015
Accepted:
28
August
2015
Published online:
25
September
2015
We consider lepton-flavour violating decays of the top quark, mediated by 4-fermion operators. We compile constraints on a complete set of SU(3) 
U(1)-invariant operators, arising from their loop contributions to rare decays and from HERA’s single-top search. The bounds on e–
flavour change are more restrictive than on 
–
; nonetheless the top could decay to a jet 
with a branching ratio of order 
. We estimate that the currently available LHC data (20 fb
at 8 TeV) could be sensitive to 
+ jet) 
, and we extrapolate that 100 fb at 13 TeV could reach a sensitivity of 
.
© SIF and Springer-Verlag Berlin Heidelberg, 2015
