Abstract

The recent observation of entanglement between top and anti-top quarks at the LHC opens the way to interpreting collider data with quantum information tools. In this work we investigate the relevance of quantum observables in searches of new physics. To this aim, we study spin correlations of pairs originating from various intermediate resonances, and compare the discovery reach of quantum observables compared to classical ones. We find that they provide complementary information and, in several notable cases, also the additional leverage necessary to detect new effects.

Details

Title
Quantum detection of new physics in top-quark pair production at the LHC
Author
Maltoni, Fabio 1 ; Severi, Claudio 2   VIAFID ORCID Logo  ; Tentori, Simone 3 ; Vryonidou, Eleni 2 

1  Università di Bologna, Dipartimento di Fisica e Astronomia, Bologna, Italy (GRID:grid.6292.f) (ISNI:0000 0004 1757 1758); INFN, Sezione di Bologna, Bologna, Italy (GRID:grid.470193.8) (ISNI:0000 0004 8343 7610); Université Catholique de Louvain, Center for Cosmology, Particle Physics and Phenomenology, Louvain-la-Neuve, Belgium (GRID:grid.7942.8) (ISNI:0000 0001 2294 713X) 
2  University of Manchester, Department of Physics and Astronomy, Manchester, U.K. (GRID:grid.5379.8) (ISNI:0000 0001 2166 2407) 
3  Université Catholique de Louvain, Center for Cosmology, Particle Physics and Phenomenology, Louvain-la-Neuve, Belgium (GRID:grid.7942.8) (ISNI:0000 0001 2294 713X) 
Pages
99
Publication year
2024
Publication date
Mar 2024
Publisher
Springer Nature B.V.
e-ISSN
10298479
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1007/JHEP03(2024)099
ProQuest document ID
2963015389
Copyright
© The Author(s) 2024. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.