Physical Naturalness and Dynamical Breaking of Classical Scale Invariance
By M. Heikinheimo, A. Racioppi, M. Raidal, C. Spethmann, K. Tuominen. 2013
155 citations recorded by the source corpus.
We propose a model of a confining dark sector, dark technicolor, that communicates with the Standard Model (SM) through the Higgs portal. In this model electroweak (EW) symmetry breaking and dark matter (DM) share a common origin, and the EW scale is generated dynamically. Our motivation to suggest this model is the absence of evidence for new physics from recent Large Hadron Collider (LHC) data. Although the conclusion is far from certain at this point, this lack of evidence may suggest that no mechanism exists at the EW scale to stabilize the Higgs mass against radiative corrections from ultraviolet (UV) physics. The usual reaction to this puzzling situation is to conclude that the stabilizing new physics is either hidden from us by accident, or that it appears at energies that are currently inaccessible, such that nature is indeed fine-tuned. In order to re-examine the arguments that have led to this dichotomy, we review the concept of naturalness in effective field theories, discussing in particular the role of quadratic divergences in relation to different energy scales. This leads us to suggest classical scale invariance as a guideline for model building, implying that explicit mass scales are absent in the underlying theory.
Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/8ef1d5b870a2e95fee2cc3991515b2c975182872
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Citations in the corpus
- Dynamically induced Planck scale and inflation (2015, methodology): “On the contrary, heavy new particles coupled to the Higgs boson would lead to large physical corrections to the Higgs mass: the associated fine-tuning could be probed by experiments [5–7].”
- Self-Interacting Dark Matter from a Non-Abelian Hidden Sector (2014, unknown): “[15–25].”
- Dynamical generation of the weak and Dark Matter scales from strong interactions (2014, background): “A related possibility is that the scalar S is interacting with techni-quarks [29, 30] or charged under a techni-color gauge group ([31, 32]; see also [52], in the past other authors considered a similar idea, but without an elementary Higgs [53, 54]) and again S acquires a vev or forms a condensate.”
- Natural tuning: towards a proof of concept (2013, result): “This scenario is partially inspired by several earlier discussions in the literature, including [11–14] (see also [15, 16]).”
- Dark matter and neutrino masses from a scale-invariant multi-Higgs portal (2015, background): “Thus, introducing an extra dark gauge group [39–55] with extra scalar degrees of freedom can in principle lead to a successful realization of CW.”