Challenging exclusive top quark pair production at low and high luminosity LHC

0566522 - FZÚ 2023 RIV US eng J - Journal Article
Martins, D.E. - Taševský, Marek - Goncalves, V. P.
Challenging exclusive top quark pair production at low and high luminosity LHC.
Physical Review D. Roč. 105, č. 11 (2022), č. článku 114002. ISSN 2470-0010. E-ISSN 2470-0029
R&D Projects: GA MŠMT(CZ) LTT17018
Institutional support: RVO:68378271
Keywords : CERN LHC Coll: upgrade * pile-up * diffraction * photon photon
OECD category: Particles and field physics
Impact factor: 5, year: 2022
Method of publishing: Open access

The elastic production of top quark pairs in pp collisions at low and high luminosity regimes is investigated in detail. We extend the study performed in [V. P. Gonçalves , Phys. Rev. D 102, 074014 (2020).] which has demonstrated that the sum of two semiexclusive tt¯ production modes, namely in photon-Pomeron (γP) and Pomeron-Pomeron (PP) interactions, can be experimentally measured when the tt¯ system decays semileptonically, tt¯→jjblνlb¯, both forward protons are tagged and a low amount of pile-up is present. In this study we focus on separating individual channels and a special attention is paid to the situation at high-luminosity LHC environment. We observe that the separation of the PP and γγ events is a challenging task, especially at high amounts of pile-up even with an optimistic 10 ps resolution of timing detectors.
Permanent Link: https://hdl.handle.net/11104/0337850