Eur. Phys. J. C (2017) 77: 276
https://doi.org/10.1140/epjc/s10052-017-4829-2

Review

Prospects for charged Higgs searches at the LHC

¹ School of Physics and Astronomy, University of Southampton, Highfield, Southampton, SO17 1BJ, UK
² Institute for Theoretical Physics, Kanazawa University, Kanazawa, 920-1192, Japan
³ Département de Mathématique, Faculté des Sciences et Techniques, Université Abdelmalek Essaâdi, B. 416, Tangier, Morocco
⁴ LPHEA, Faculté des Sciences-Semlalia, B.P. 2390, Marrakesh, Morocco
⁵ CPPM, Aix-Marseille Université, CNRS-IN2P3, UMR 7346, 163 Avenue de Luminy, 13288, Marseille Cedex 9, France
⁶ Sobolev Institute of Mathematics SB RAS, Novosibirsk University, 630090, Novosibirsk, Russia
⁷ IHC, Instituto de História Contemporanea, FCSH - New University of Lisbon, Lisbon, Portugal
⁸ Facultad de Ciencias de la Electrónica, Benemérita Universidad Autónoma de Puebla, Apdo. Postal 542, C.P. 72570, Puebla, Puebla, Mexico
⁹ Dual C-P Institute of High Energy Physics, Colima, Mexico
¹⁰ Department of Physics, and Helsinki Institute of Physics, University of Helsinki, Gustaf Hällströmin katu 2, P.O.Box 64, 00014, Helsinki, Finland
¹¹ PRISMA Cluster of Excellence and Institute for Physics (THEP), Johannes Gutenberg University, 55099, Mainz, Germany
¹² National Institute of Chemical Physics and Biophysics, Rävala 10, 10143, Tallinn, Estonia
¹³ Department of Physics, University of Toyama, 3190 Gofuku, Toyama, 930-8555, Japan
¹⁴ Department of Physics, Birzeit University, PO Box 14, Birzeit, West Bank, Palestine
¹⁵ Faculty of Physics, University of Warsaw, Pasteura 5, 02-093, Warsaw, Poland
¹⁶ Univ Lyon, Univ Lyon 1, ENS de Lyon, CNRS, Centre de Recherche Astrophysique de Lyon, UMR5574, 69230, Saint-Genis-Laval, France
¹⁷ Theoretical Physics Department, CERN, 1211, Geneva 23, Switzerland
¹⁸ Department of Physics and Technology, University of Bergen, Postboks 7803, 5020, Bergen, Norway
¹⁹ Paul Scherrer Institute, 5232, Villigen, PSI, Switzerland
²⁰ Centro de Física Teórica e Computacional, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Edifício C8, 1749-016, Lisbon, Portugal
²¹ Instituto Superior de Engenharia de Lisboa - ISEL, 1959-007, Lisbon, Portugal
²² Center of Excellence in Particle Physics (CoEPP), The University of Adelaide, Adelaide, SA, Australia
²³ Department of Physics, The Oskar Klein Centre, Stockholm University, 106 91, Stockholm, Sweden

^* e-mail: Maria.Krawczyk@fuw.edu.pl
^** e-mail: Per.Osland@uib.no

Received: 11 July 2016
Accepted: 7 April 2017
Published online: 3 May 2017

Abstract

The goal of this report is to summarize the current situation and discuss possible search strategies for charged scalars, in non-supersymmetric extensions of the Standard Model at the LHC. Such scalars appear in Multi-Higgs-Doublet models, in particular in the popular Two-Higgs-Doublet model, allowing for charged and additional neutral Higgs bosons. These models have the attractive property that electroweak precision observables are automatically in agreement with the Standard Model at the tree level. For the most popular version of this framework, Model II, a discovery of a charged Higgs boson remains challenging, since the parameter space is becoming very constrained, and the QCD background is very high. We also briefly comment on models with dark matter which constrain the corresponding charged scalars that occur in these models. The stakes of a possible discovery of an extended scalar sector are very high, and these searches should be pursued in all conceivable channels, at the LHC and at future colliders.