Flavor hierarchies, flavor anomalies, and Higgs mass from a warped extra dimension

Fuentes-Martín, Javier; Isidori, Gino; Lizana, Javier M.; Selimovic, Nudzeim; Stefanek, Ben A.

doi:10.1016/j.physletb.2022.137382

Cited by 37 publications

(20 citation statements)

References 30 publications

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“…A particularly interesting (and ambitious) realization of the leptoquarks was proposed in Refs. [59][60][61], constructing a UV-complete embedding of the leptoquarks into a framework that explains the flavor structure of the SM via a generation-dependent Pati-Salam theory. Collider searches for extra gauge bosons necessarily accompanying the leptoquark have been presented in Ref.…”

Section: Implications Of Anomaliesmentioning

confidence: 99%

“…As discussed in Sec. 3.2, LQs arise in many BSM models, such as GUT-inspired scenarios [59][60][61], R-parity violating SUSY [55][56][57][58] or composite Higgs models [52][53][54], and may resolve some of the observed B-physics anomalies [48]. However, care must be taken since LQs which allow diquark interaction may allow the proton to decay.…”

Section: Leptoquarksmentioning

confidence: 99%

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Report of the Topical Group on Physics Beyond the Standard Model at Energy Frontier for Snowmass 2021

Bose¹

2022

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Section: Implications Of Anomaliesmentioning

confidence: 99%

Section: Leptoquarksmentioning

confidence: 99%

Report of the Topical Group on Physics Beyond the Standard Model at Energy Frontier for Snowmass 2021

Bose¹

2022

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“…This way, B-anomalies and the flavour puzzle are dynamically and parametrically connected. Furthermore, the twin PS model predicts dominantly left-handed JHEP02(2023)188 (LH) U 1 currents that were preferred by the 2021 picture of B-anomalies [12,25,26], while the other proposals [22][23][24] predict large couplings for right-handed (RH) third family fermion, which lead to tight constraints from high-p T searches.…”

Section: Introductionmentioning

confidence: 97%

“…Motivated by the desire to link the origin of the B-anomalies with the origin of Yukawa couplings in the SM, one of us proposed a theory of flavour involving a twin Pati-Salam group [21]. Unlike the other models already present in the market [22][23][24], the twin PS treats all three fermion families in the same way. The basic idea is that all three families of SM chiral fermions transform under one PS group, while families of vector-like fermions transform under the other one.…”

Section: Introductionmentioning

confidence: 99%

B-anomalies in a twin Pati-Salam theory of flavour including the 2022 LHCb $$ {R}_{K^{\left(\ast \right)}} $$ analysis

Navarro

King

2023

J. High Energ. Phys.

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We perform a comprehensive phenomenological analysis of the twin Pati-Salam theory of flavour, focussing on the parameter space relevant for interpreting the B-anomalies via vector leptoquark U1 exchange. This model provides a very predictive framework in which the U1 couplings and the Yukawa couplings find a common origin via mixing of chiral quarks and leptons with vector-like fermions, providing a direct link between the B-anomalies and the fermion masses and mixing. We propose and study a simplified model with three vector-like fermion families, in the massless first family approximation, and show that the second and third family charged fermion masses and mixings and the B-anomalies can be simultaneously explained and related. The model has the proper flavour structure to be compatible with all low-energy observables, and leads to predictions in promising observables such as τ → 3μ, τ → μγ and $$ B\to {K}^{\left(\ast \right)}\nu \overline{\nu} $$ B → K ∗ ν ν ¯ at Belle II and LHCb. The model also predicts a rich spectrum of TeV scale gauge bosons and vector-like fermions, all accessible to the LHC. In this updated version we have included an extended analysis considering the new 2022 LHCb data on $$ {R}_{K^{\left(\ast \right)}} $$ R K ∗ , which has slightly shifted the preferred parameter space with respect to the 2021 case. The model can still explain the $$ {R}_{D^{\left(\ast \right)}} $$ R D ∗ anomalies at 1σ in a narrow window, however we expect small deviations from the SM on the $$ {R}_{K^{\left(\ast \right)}} $$ R K ∗ ratios, to be tested in the future via more precise measurements by the LHCb collaboration. We also predict RD = $$ {R}_{D^{\ast }} $$ R D ∗ , with future measurements shifting the world averages to slightly smaller central values.

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“…Scalar leptoquarks arise as pseudo-Nambu-Goldstone bosons of a new strongly interacting sector possibly stabilising the electroweak scale and solving the Higgs hierarchy problem [5][6][7][8][9], and are also present in R-parity violating supersymmetric settings [10][11][12][13]. Vector leptoquarks at the TeV scale are predicted in the partial unification models based on the SU(4) gauge group [14][15][16][17][18][19][20][21][22][23]. Indirectly, the presence of leptoquarks would impact the low-energy flavour transitions, electroweak precision observables, and Higgs physics.…”

Section: Introductionmentioning

confidence: 99%

Resonant leptoquark at NLO with POWHEG

Buonocore

Greljo

Krack

et al. 2022

J. High Energ. Phys.

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Recent progress in calculating lepton density functions inside the proton and simulating lepton showers laid the foundations for precision studies of resonant leptoquark production at hadron colliders. Direct quark-lepton fusion into a leptoquark is a novel production channel at the LHC that has the potential to probe a unique parameter space for large masses and couplings. In this work, we build the first Monte Carlo event generator for a full-fledged simulation of this process at NLO for production, followed by a subsequent decay using the POWHEG method and matching to the parton showers utilizing HERWIG. The code can handle all scalar leptoquark models with renormalisable quark-lepton interactions. We then comprehensively study the differential distributions, including higher-order effects, and assess the corresponding theoretical uncertainties. We also quantify the impact of the improved predictions on the projected (HL-)LHC sensitivities and initiate the first exploration of the potential at the FCC-hh. Our work paves the way toward performing LHC searches using this channel.

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Flavor hierarchies, flavor anomalies, and Higgs mass from a warped extra dimension

Cited by 37 publications

References 30 publications

Report of the Topical Group on Physics Beyond the Standard Model at Energy Frontier for Snowmass 2021

Report of the Topical Group on Physics Beyond the Standard Model at Energy Frontier for Snowmass 2021

B-anomalies in a twin Pati-Salam theory of flavour including the 2022 LHCb $$ {R}_{K^{\left(\ast \right)}} $$ analysis

Resonant leptoquark at NLO with POWHEG

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