Graviscalars from higher-dimensional metrics and curvature-Higgs mixing
By G. Giudice, R. Rattazzi, J. Wells. 2000
256 citations recorded by the source corpus.
We investigate the properties of scalar fields arising from gravity propagating in extra dimensions. In the scenario of large extra dimensions, proposed by Arkani-Hamed, Dimopoulos and Dvali, graviscalar Kaluza-Klein excitations are less important than the spin-2 counterparts in most processes. However, there are important exceptions. The Higgs boson can mix to these particles by coupling to the Ricci scalar. Because of the large number of states involved, this mixing leads, in practice, to a sizeable invisible width for the Higgs. In the Randall-Sundrum scenario, the only graviscalar is the radion. It can be produced copiously at hadron colliders by virtue of its enhanced coupling to two gluons through the trace anomaly of QCD. We study both the production and decay of the radion, and compare it to the Standard Model Higgs boson. Furthermore, we find that radion detectability depends crucially on the curvature-Higgs boson mixing parameter.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/a154d53bffb7b32e65231fe1f40b72e1736a63d1
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Citations in the corpus
- Beyond the Standard Model Physics at the HL-LHC and HE-LHC (2018, methodology): “The WED models that were used in the interpretations of the results have extra spatial dimension compactified between two branes (called the bulk) via an exponential metric l, where is the warp factor and l the coordinate of the extra spatial dimension [494].”
- What is the γγ resonance at 750 GeV? (2015, unknown): “(40) coincide with the beta-function coefficients in the SM: (bB, bW , bG) = −(1) 2 (−41/6, 19/6, 7), see [45].”
- Strong double higgs production at the LHC (2010, background): “Instead, for loop induced processes like h→ γγ or gg → h, deviations of order 1 with respect to the Standard Higgs occur due to the trace anomaly contribution [23].”
- Constraints on the gluon PDF from top quark pair production at hadron colliders (2013, methodology): “To begin with, we have considered Kaluza-Klein massive graviton production in warped extra dimension scenarios [20], in particular in the so-called bulk models in which the coupling of the graviton to fermions is suppressed, and thus production is driven by gluongluon annihilation [21].”