Inflaton versus Curvaton in Higher-Dimensional Gauge Theories

Inami, Takeo; Koyama, Yoji; Lin, Chia-Min; Minakami, Shie

doi:10.1143/ptp.125.345

Cited by 38 publications

(50 citation statements)

References 17 publications

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“…, we checked that the matching is in agreement with the known SM result [98,111] as well as with the contributions due to four-fermion operators derived in [37].…”

Section: Resultssupporting

confidence: 82%

“…In addition to the checks mentioned above, we compared our results to the literature in several cases. Starting with the flavor-changing parts of the dipole operators L dγ and L dG , we find that the calculation reproduces the known SM matching [97,98], as well as the terms proportional to the C Hud , C to the flavor-diagonal dipoles, L uγ, uG , L dγ, dG , and L eγ , are in agreement with the results of [103][104][105][106]. A subtlety appears in the case of the Q W operator for which the definition that appears in the literature [105,107,108] differs by an evanescent operator from the one used here, leading to a result that differs by a finite part.…”

Section: Resultsmentioning

confidence: 63%

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Low-energy effective field theory below the electroweak scale: matching at one loop

Dekens

Stoffer

2019

J. High Energ. Phys.

136

164

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We compute the one-loop matching between the Standard Model Effective Field Theory and the low-energy effective field theory below the electroweak scale, where the heavy gauge bosons, the Higgs particle, and the top quark are integrated out. The complete set of matching equations is derived including effects up to dimension six in the power counting of both theories. We present the results for general flavor structures and include both the CP -even and CP -odd sectors. The matching equations express the masses, gauge couplings, as well as the coefficients of dipole, three-gluon, and four-fermion operators in the low-energy theory in terms of the parameters of the Standard Model Effective Field Theory. Using momentum insertion, we also obtain the matching for the CP -violating theta angles. Our results provide an ingredient for a model-independent analysis of constraints on physics beyond the Standard Model. They can be used for fixed-order calculations at one-loop accuracy and represent a first step towards a systematic next-to-leading-log analysis. E SMEFT operator basis 56 F LEFT operator basis 58 G Conventions for the supplemental material 59 References 61

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“…, we checked that the matching is in agreement with the known SM result [98,111] as well as with the contributions due to four-fermion operators derived in [37].…”

Section: Resultssupporting

confidence: 82%

Section: Resultsmentioning

confidence: 63%

Low-energy effective field theory below the electroweak scale: matching at one loop

Dekens

Stoffer

2019

J. High Energ. Phys.

136

164

View full text Add to dashboard Cite

show abstract

“…The Inami-Lim function S 0 (x t ) [2] and η 2B [3] are known functions in perturbation theory, so by combining knowledge of the non-perturbative bag parameter B P q with the experimental value of ∆m q (q = d, s) we can determine V * tq V tb . The bare bag parameter B bare P q and the four-quark operator O VV+AA are defined as…”

Section: Observablesmentioning

confidence: 99%

Heavy Domain Wall Fermions: The RBC and UKQCD charm physics program

et al. 2018

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“…where η B ≈ 0.84 is a QCD correction, S 0 (x) is the Inami-Lim function [52,53], B B is a QCD bag parameter extracted from the same hadronic matrix elements as were used in evaluating the RS contribution M B 12 , and f B is the B meson decay constant. We now follow [54] and parameterize the ratio of (M B 12 ) RS to (M B 12 ) SM as The blue represents the 68% CL experimental allowed region, the green represents the 95% CL region, and the orange represents the 99.7% CL region [54] where (M B 12 ) RS is the contribution to M B 12 stemming entirely from tree-level RS contributions, and h d and σ d are real parameters.…”

Section: B 0 −B 0 Mixingmentioning

confidence: 99%

Local SU(2) × U(1) quark flavor symmetry in the RS bulk

Wojcik

Rizzo

2020

J. High Energ. Phys.

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We propose a model of quark flavor based on an additional SU (2) × U (1) local symmetry in a warped extra dimensional bulk. In contrast to other works, we break the additional gauge symmetry in the bulk via two complex scalars which acquire bulk vevs, rather than relying on brane-localized symmetry breaking. A gauge-covariant Kaluza-Klein decomposition of a theory with a bulk spontaneously broken gauge symmetry is performed, and exact expressions for the bulk profiles of all physical particles in such systems are given. The SM quark masses and mixings are then recreated using gauge-covariant bulk quark mass terms and Yukawa-like couplings to the new bulk scalars. A numerical sampling of points in the model parameter space that recreate the quark masses and mixings is performed at a KK scale of M KK = 5 TeV. We then compute the ∆F = 2 4-quark operators arising from our new flavor gauge bosons and scalars, and those arising from Kaluza-Klein modes of SM gauge bosons. By decoupling one of our bulk scalar fields to all quark fields except the right-handed up-like sector, we find that it is possible to greatly suppress tree-level contributions to the highly constrained Kaon mixing parameters. Instead, the dominant constraints on the model emerge from neutral B d and D meson mixing. These constraints are explored with our numerical sampling of the model parameter space, and the specific contribution of the new flavor gauge bosons and scalars is discussed. We find that for a significant range of realistic flavor gauge couplings, the new gauge bosons compete with the normally dominant gluon flavorchanging currents, but flavor-changing operators emerging from the bulk scalar fields are highly suppressed. Finally, we briefly comment on flavor constraints that are independent of the flavor gauge sector arising from the Zb L b L coupling and rare top decays. †

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Inflaton versus Curvaton in Higher-Dimensional Gauge Theories

Cited by 38 publications

References 17 publications

Low-energy effective field theory below the electroweak scale: matching at one loop

Low-energy effective field theory below the electroweak scale: matching at one loop

Heavy Domain Wall Fermions: The RBC and UKQCD charm physics program

Local SU(2) × U(1) quark flavor symmetry in the RS bulk

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