https://doi.org/10.1140/epjc/s10052-015-3776-z
Regular Article - Theoretical Physics
Measuring anomalous Wtb couplings at 
collider
1
SGTB Khalsa College, University of Delhi, Delhi, 110007, India
2
Department of Physics and Astrophysics, University of Delhi, Delhi, 110007, India
3
National Institute for Theoretical Physics, School of Physics, School of Physics and Mandelstam Institute for Theoretical Physics, University of the Witwatersrand, Johannesburg, South Africa
4
University of the Witwatersrand, Private Bag 3, Wits, 2050, Johannesburg, South Africa
* e-mail: sukanta.dutta@gmail.com
Received:
2
August
2015
Accepted:
5
November
2015
Published online:
7
December
2015
We study the accuracy with which the lowest order CP conserving anomalous Wtb couplings in the single top-quark production at the proposed large hadron electron collider can be probed. The one-dimensional distribution of various kinematic observables at the parton level MC and their asymmetries arising due to the presence of anomalous couplings both in the hadronic and leptonic W decay is examined. We find that at 95 % CL the anomalous coupling associated with the left-handed vector current can be measured at an accuracy of the order of 
10
–10
, while those associated with the right-handed vector and left- as well as right-handed tensor currents have a sensitivity at the order of 10
–10 for the systematic uncertainty varying between 10–1 % at an integrated luminosity of 100 fb. A comprehensive analysis of the combined covariance matrix derived from all one-dimensional distributions of kinematical observables is used to compute the errors in the anomalous couplings.
© The Author(s), 2015
