Warped/composite phenomenology simplified

By Roberto Contino, Thomas Kramer, M. Son, R. Sundrum. 2006

307 citations recorded by the source corpus.

This is the first of two papers aimed at economically capturing the collider phenomenology of warped extra dimensions with bulk Standard Model fields, where the hierarchy problem is solved non-supersymmetrically. This scenario is related via the AdS/CFT correspondence to that of partial compositeness of the Standard Model. We present a purely four-dimensional, two-sector effective field theory describing the Standard Model fields and just their first Kaluza-Klein/composite excitations. This truncation, while losing some of the explanatory power and precision of the full higher-dimensional warped theory, greatly simplifies phenomenological considerations and computations. We describe the philosophy and explicit construction of our two-sector model, and also derive formulas for residual Higgs fine tuning and electroweak and flavor precision variables to help identify the most motivated parts of the parameter space. We highlight several of the most promising channels for LHC exploration. The present paper focusses on the most minimal scenario, while the companion paper addresses the even richer phenomenology of the minimal scenario of precision gauge coupling unification.

Subfields: Nuclear and High Energy Physics, Political Science and International Relations

View Paper: https://www.semanticscholar.org/paper/21580c459ff7c6c815f5d309f040a7841957e560

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Citations in the corpus

Higgs boson from an extended symmetry (2007, unknown): “04 32 v3 [ he p- ph ] 7 O”
Twin Higgs mechanism and a composite Higgs boson (2015, methodology): “This is a direct consequence of the partial compositeness mechanism implemented in these models to solve the flavor problem [4, 5].”
Vector-like leptons: Higgs decays and collider phenomenology (2013, methodology): “This scenario allows for a simple understanding of the mass hierarchy among different generations and, in fact, it is common to many well-motivated extensions of the SM, such as composite Higgs models [7, 8] and warped extra dimensions [9, 10].”
A first top partner hunter’s guide (2012, background): “There already exists a literature on simplified top partner models in generic composite Higgs scenarios [20–22], where the role of symmetry is not fully exploited.”
On the tuning and the mass of the composite Higgs (2012, unknown): “The aim of this paper is to study quantitatively the fine-tuning issue in the context of composite-Higgs models with partial fermion compositeness [3] and to analyze the interplay among the tuning and the Higgs mass.”
Flavor and CP invariant composite Higgs models (2011, background): “The tree level correction to the coupling of the Z to fermions can be estimated in the two site model as [11], δg ≈ Y 2 U,Dv 2 2m(2)ρ sin(2) φψ ( T ′ 3L(Q)− T3L ) + g(2) ∗2 v2 4m(2)ρ sin(2) φψ(T3R − T3L) (2.”
B-decay anomalies in a composite leptoquark model (2016, methodology): “[4] or to those of a two site model of the standard CHM, apart from two main differences: we have to include SU(4) instead of SU(3) and the elementary weak hypercharge gauge boson mixes with three composite fields (associated with T (15), T 3 R and X).”
New physics in B→K∗μμ? (2013, background): “[59], describing one composite resonance for each SM field (plus an extended spin-1 sector to accommodate a custodial symmetry required by electroweak precision tests).”
Discovering the top partners at the LHC using same-sign dilepton final states (2008, background): “Here the dots stand for terms with two heavy fermions, and sinφL,R denote the degree of compositeness of the SM tL,R quarks: tan φL = ∆L/MQ, tan φR = ∆R/MT̃ [23].”
Low scale flavor gauge symmetries (2010, background): “The other possibility is the idea of partial compositeness, see for example [31].”