https://doi.org/10.1140/epjc/s10052-020-7728-x
Regular Article - Theoretical Physics
EFT triangles in the same-sign WW scattering process at the HL-LHC and HE-LHC
1
Panjab University, Chandigarh, 160014, India
2
Faculty of Physics, University of Warsaw, Ul. Pasteura 5, 02-093, Warsaw, Poland
3
CAFPE and Departamento de Física Teórica y del Cosmos, Universidad de Granada, Campus de Fuentenueva, 18071, Granada, Spain
4
High Energy Physics Department, National Center for Nuclear Research, Ul. Pasteura 7, 02-093, Warsaw, Poland
5
Fermi National Accelerator Laboratory, Batavia, IL, 60510, USA
* e-mail: pkozow@fuw.edu.pl
Received:
20
July
2019
Accepted:
7
February
2020
Published online:
27
February
2020
We investigate the Beyond Standard Model discovery potential in the framework of the effective field theory (EFT) for the same-sign WW scattering process in purely leptonic W decay modes at the High-Luminosity and High-Energy phases of the Large Hadron Collider (LHC). The goal of this paper is to examine the applicability of the EFT approach, with one dimension-8 operator varied at a time, to describe a hypothetical new physics signal in the WWWW quartic coupling. In the considered process there is no experimental handle on the WW invariant mass, and it has previously been shown that the discovery potential at 14 TeV is rather slim. In this paper we report the results calculated for a 27 TeV machine and compare them with the discovery potential obtained at 14 TeV. We find that while the respective discovery regions shift to lower values of the Wilson coefficients, the overall discovery potential of this procedure does not get significantly larger with a higher beam energy.
© The Author(s), 2020
