https://doi.org/10.1140/epjc/s10052-021-09125-5
Regular Article – Theoretical Physics
Testing leptoquark/EFT in
at the LHC
1
Department of Physics, Nagoya University, 464-8602, Nagoya, Japan
2
Kobayashi-Maskawa Institute for the Origin of Particles and the Universe, Nagoya University, 464-8602, Nagoya, Japan
3
INFN, Sezione di Roma Tre, Via della Vasca Navale 84, 00146, Rome, Italy
4
INFN, Sezione di Pisa, Largo B. Pontecorvo 3, 56127, Pisa, Italy
Received:
16
November
2020
Accepted:
7
April
2021
Published online:
10
May
2021
We investigate the current LHC bounds on New Physics (NP) that contributes to for
by considering both leptoquark (LQ) models and an effective-field-theory (EFT) Hamiltonian. Experimental analyses from
searches with high
are applied to evaluate the NP constraints with respect to the Wilson coefficients. A novel point of this work is to show difference between LQs and EFT for the applicable LHC bound. In particular, we find that the EFT description is not valid to search for LQs with the mass less than
at the LHC and leads to overestimated bounds. We also discuss future prospects of high luminosity LHC searches including the charge asymmetry of background and signal events. Finally, a combined summary for the flavor and LHC bounds is given, and then we see that in several NP scenarios the LHC constraints are comparable with the flavor ones.
© The Author(s) 2021
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
Funded by SCOAP3