Higgs Boson Pair Production at Colliders: Status and Perspectives
B. Di Micco, M. Gouzevitch, Javier Mazzitelli, C. Vernieri, J. Alison, K. Androsov, Julien Baglio, Emanuele Bagnaschi, S. Banerjee, Philipp Basler, A. Bethani, A. Betti, Monika Blanke, Blondel, A., L. Borgonovi, E. Brost, P. Bryant, Gerhard Buchalla, T. J. Burch, V. M. M. Cairo, Francisco Campanario, Marcela Carena, A. Carvalho Antunes De Oliveira, N. Chernyavskaya, V. D’Amico, S. Dawson, N. De Filippis, Luca Di Luzio, S. Di Vita, Barry M. Dillon, Christoph Englert, A. Ferrari, E. Fontanesi, H. Fox, M. Gallinaro, Pier Paolo Giardino, Seraina Glaus, F. Goertz, Stefania Gori, Ramona Gröber, Christophe Grojean, Guerrero Ibarra, D. F., R. Gupta, Ulrich Haisch, Gudrun Heinrich, Peisi Huang, Janot, P., Stephen Jones, M. Kagan, Simon Kast, Matthias Kerner, Jeong Han Kim, Kyoungchul Kong, Jonathan Kozaczuk, Frank Krauss, Silvan Kuttimalai, Hyun Min Lee, K. J. C. Leney, Ian Lewis, Stefan Liebler, Zhen Liu, Heather E. Logan, Andrew J. Long, Fabio Maltoni, S. Manzoni, L. Mastrolorenzo, K. Matchev, F. Micheli, Margarete Mühlleitner, Mark Neubauer, G. Ortona, M. Osherson, Davide Pagani, Giuliano Panico, Andreas Papaefstathiou, M. Park, Michael E. Peskin, Jérémie Quevillon, Marc Riembau, Tania Robens, P. Roloff, Heidi Rzehak, J. Schaarschmidt, U. Schnoor, LM Scyboz, M. Selvaggi, Nausheen R. Shah, Ambresh Shivaji, S. Shrestha, Kuver Sinha, Michael Spannowsky, M. Spira, Tim Stefaniak, J. Streicher, M. Sullivan, M. Swiatlowski, Teixeira De Lima, R., Julian Chalmers Thomson, Jinshou Tian, Thibaud Vantalon
Abstract
This document summarises the current theoretical and experimental status of the di-Higgs boson production searches, and of the direct and indirect constraints on the Higgs boson self-coupling, with the wish to serve as a useful guide for the next years. The document discusses the theoretical status, including state-of-the-art predictions for di-Higgs cross sections, developments on the effective field theory approach, and studies on specific new physics scenarios that can show up in the di-Higgs final state. The status of di-Higgs searches and the direct and indirect constraints on the Higgs self-coupling at the LHC are presented, with an overview of the relevant experimental techniques, and covering all the variety of relevant signatures. Finally, the capabilities of future colliders in determining the Higgs self-coupling are addressed, comparing the projected precision that can be obtained in such facilities. The work has started as the proceedings of the Di-Higgs workshop at Colliders, held at Fermilab from the 4th to the 9th of September 2018, but it went beyond the topics discussed at that workshop and included further developments.