LHC constraints and potential on resonant monotop production

Cacciapaglia, Giacomo (Aff1, 0000 0001 2150 7757, Univ. Lyon, Université Claude Bernard Lyon 1, CNRS/IN2P3, UMR5822 IPNL, 69622, Villeurbanne, France) ; Conte, Eric (Aff2, 0000 0001 2157 9291, Institut Pluridisciplinaire Hubert Curien/Département Recherches Subatomiques, Université de Strasbourg/CNRS-IN2P3, 23 Rue du Loess, 67037, Strasbourg, France) ; Deandrea, Aldo  (Aff1, 0000 0001 2150 7757, Univ. Lyon, Université Claude Bernard Lyon 1, CNRS/IN2P3, UMR5822 IPNL, 69622, Villeurbanne, France) ; Fuks, Benjamin (Aff3, 0000 0001 2308 1657, Laboratoire de Physique Théorique et Hautes Énergies (LPTHE), UMR 7589, Sorbonne Université et CNRS, 4 place Jussieu, 75252, Paris Cedex 05, France) (Aff4, 0000 0001 1931 4817, Institut Universitaire de France, 103 boulevard Saint-Michel, 75005, Paris, France) ; Shao, Hua-Sheng (Aff3, 0000 0001 2308 1657, Laboratoire de Physique Théorique et Hautes Énergies (LPTHE), UMR 7589, Sorbonne Université et CNRS, 4 place Jussieu, 75252, Paris Cedex 05, France)

26 February 2019

Abstract: We discuss the phenomenology associated with a resonant monotop collider signal, i.e.  a signal in which a single top quark is resonantly produced in association with missing energy through an s -channel scalar exchange. We study both the bounds originating from dedicated monotop searches performed by the ATLAS and CMS experiments, and the constraints associated with other processes that could be induced by a new physics context favouring monotop production at colliders. The latter class of constraints includes, in particular, the recasting of analyses from the LHC and the TeVatron. All theoretical calculations are performed at the next-to-leading order accuracy in QCD, and we finally combine all results to establish the present limits on the parameter space and test the relevance of the monotop signal at the LHC Run 2.


Published in: EPJC 79 (2019) 174
Published by: Springer/Società Italiana di Fisica
DOI: 10.1140/epjc/s10052-019-6675-x
License: CC-BY-3.0



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