Mirror World at the Large Hadron Collider

By R. Barbieri, T. Grégoire, L. Hall. 2005

145 citations recorded by the source corpus.

A mirror world can modify in a striking way the LHC signals of the Higgs sector. An exact or approximate Z2 symmetry between the mirror world and our world allows large mixing between the Higgs bosons of these worlds, leading to production rates and branching ratios for these states that are markedly different from the standard model and are characteristic of a mirror world. The constraints on these Higgs boson masses from precision electroweak data differ from the standard model bound, so that the new physics that cancels the quadratic divergence induced by the top quark may appear at a larger scale, possibly beyond the reach of the LHC. However, the scale of new physics needed to cancel the quadratic divergence induced by the Higgs boson is not significantly changed. With small breakings of the Z2 parity, the lightest mirror quarks (and possibly charged mirror leptons) could be the dark matter in the universe, forming galactic halos that are stable to cooling. A possible signal from the relic radiation density of the mirror world is also discussed.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/c67b6ed853646d92f47e3add699205688fc91a69

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Nuclear and High Energy Physics

1. Lian-tao Wang
2. K. Howe
3. M. Low
4. N. Craig
5. Andrea Tesi
6. Cms Collaboration
7. G. Salam
8. A. Larkoski

Citations in the corpus

• Twin Higgs mechanism and a composite Higgs boson (2015, background): “ggs (TH) mechanism [16], see also [17]. As far as the SM alone is considered, the TH mechanism consists of simply mirroring the SM lagrangian, via a Z 2-symmetry, resulting in the SM and its copy, SM0[18]. The scalar potential has an accidental U(4)/U(3) symmetry, and radiative corrections do not br”
• Doubling down on naturalness with a supersymmetric twin Higgs (2013, background): “This tuning is present in any twin Higgs model in which a soft Z2 breaking mass leads to the hierarchy in vevs [12].”