Results 11 to 20 of about 620 (125)
Journal of High Energy Physics, 2021 AbstractThere are two canonical approaches to treating the Standard Model as an Effective Field Theory (EFT): Standard Model EFT (SMEFT), expressed in the electroweak symmetric phase utilizing the Higgs doublet, and Higgs EFT (HEFT), expressed in the broken phase utilizing the physical Higgs boson and an independent set of Goldstone bosons.
Cohen, Timothy +3 more
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The European Physical Journal C, 2023 AbstractThis work is based on a bottom-up approach to the standard-model effective field theory (SMEFT), resulting in an equiprobable space of Wilson coefficients. The randomly generated Wilson coefficients of the SMEFT (in the Warsaw basis) are treated as pseudo-data and, for each observable, the corresponding probability density function is computed.
Camponovo, Federico +1 more
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SMEFT as a slice of HEFT’s parameter space [PDF]
EPJ Web of Conferences, 2022 The Standard Model Effective Field Theory (SMEFT) is the parametrization chosen to interpret many modern measurements. We have recently discussed, building on the work of other groups, that its overall framework can be experimentally tested, beyond simply constraining its parameters.
Salas-Bernárdez, Alexandre +3 more
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SMEFT atlas of ∆F = 2 transitions [PDF]
Journal of High Energy Physics, 2020 Abstract We present a model-independent anatomy of the ∆F = 2 transitions K0−$$ {\overline{K}}^0 $$ K ¯ 0 , Bs,d−$$ {\overline{B}}_{s,d} $$
Aebischer, Jason +3 more
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On the non-minimal character of the SMEFT
Physics Letters B, 2017 When integrating out unknown new physics sectors, what is the minimal character of the Standard Model Effective Field Theory (SMEFT) that can result? In this paper we focus on a particular aspect of this question: "How can one obtain only one dimension six operator in the SMEFT from a consistent tree level matching onto an unknown new physics sector ...
Yun Jiang, Michael Trott
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ALP — SMEFT interference [PDF]
Journal of High Energy Physics, 2021 Abstract The Standard Model Effective Field Theory (SMEFT) offers a powerful theoretical framework for parameterizing the low-energy effects of heavy new particles with masses far above the scale of electroweak symmetry breaking. Additional light degrees of freedom extend the effective theory.
Galda, Anne Mareike +2 more
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Custodial symmetry violation in the SMEFT [PDF]
Physical Review D, 2021 35 pages + appendices, 7 ...
Graham D. Kribs +3 more
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Higgs decays to two leptons and a photon beyond leading order in the SMEFT
SciPost Physics, 2022 We present the three-body decay of the Higgs boson into two leptons and a photon to dimension-eight in the Standard Model Effective Field Theory (SMEFT).
Tyler Corbett, Thor Rasmussen
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Uncovering the root of LEFT in SMEFT [PDF]
Europhysics Letters, 2021 Abstract At energies below the electroweak scale, baryon number B and lepton number L violating processes are of significant importance in identifying the nature of UV extensions of the Standard Model. The imprint of UV theories on low-energy measurements can be calculated to a high accuracy using the theoretical framework of the Low ...
J. Chakrabortty +3 more
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Journal of High Energy Physics, 2022 Abstract We study the flavor structure of the lepton and baryon number-conserving dimension-6 operators in the Standard Model effective field theory (SMEFT). Building on the work of [1], we define several well-motivated flavor symmetries and symmetry-breaking patterns that serve as competing hypotheses about the ultraviolet (UV ...
Admir Greljo +2 more
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