On the Interpretation of Nonresonant Phenomena at Colliders. (17th March 2021)

• Record Type: Journal Article
• Authors: Folgado, Miguel G.; Sanz, Veronica
• Other Names: Saez Chillon Gomez Diego Academic Editor.
• Is Part Of: Advances in high energy physics. Volume 2021(2021)
• Publication Date: 2021-03-17
• Subjects: Particles (Nuclear physics) -- Periodicals; Particles (Nuclear physics); Periodicals; 539.76
• DOI: 10.1155/2021/2573471
• Languages: English
• ISSNs: 1687-7357

Abstract

Abstract : With null results in resonance searches at the LHC, the physics potential focus is now shifting towards the interpretation of nonresonant phenomena. An example of such shift is the increased popularity of the EFT programme. We can embark on such programme owing to the good integrated luminosity and an excellent understanding of the detectors, which will allow these searches to become more intense as the LHC continues. In this paper, we provide a framework to perform this interpretation in terms of a diverse set of scenarios, including (1) generic heavy new physics described at low energies in terms of a derivative expansion, such as in the EFT approach; (2) very light particles with derivative couplings, such as axions or other light pseudo-Goldstone bosons; and (3) the effect of a quasicontinuum of resonances, which can come from a number of strongly coupled theories, extradimensional models, clockwork set-ups, and their deconstructed cousins. These scenarios are not equivalent despite all nonresonance, although the matching among some of them is possible, and we provide it in this paper.