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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Minimally extended SILH

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Chala, Mikael ; Durieux, Gauthier ; Grojean, Christophe ; de Lima, Leonardo ; Matsedonskyi, Oleksii
Total Authors: 5
Document type: Journal article
Source: Journal of High Energy Physics; n. 6 JUN 16 2017.
Web of Science Citations: 20

Higgs boson compositeness is a phenomenologically viable scenario addressing the hierarchy problem. In minimal models, the Higgs boson is the only degree of freedom of the strong sector below the strong interaction scale. We present here the simplest extension of such a framework with an additional composite spin-zero singlet. To this end, we adopt an effective field theory approach and develop a set of rules to estimate the size of the various operator coefficients, relating them to the parameters of the strong sector and its structural features. As a result, we obtain the patterns of new interactions affecting both the new singlet and the Higgs boson's physics. We identify the characteristics of the singlet field which cause its effects on Higgs physics to dominate over the ones inherited from the composite nature of the Higgs boson. Our effective field theory construction is supported by comparisons with explicit UV models. (AU)

FAPESP's process: 15/25393-0 - Composite Higgs models and cosmological relaxation of the electroweak scale
Grantee:Leonardo de Lima
Support type: Scholarships abroad - Research Internship - Post-doctor
FAPESP's process: 12/21436-9 - Hierarchical quiver Gauge theories: model building and phenomenology
Grantee:Leonardo de Lima
Support type: Scholarships in Brazil - Post-Doctorate