The SMEFT formalism: the basis for finding deviations from the Standard Model

The search for manifestations of physics beyond the Standard Model (SM) is one of the main directions of research at the LHC and future colliders under discussion. The effects caused by the new physics can consist in the direct detection of new particles if their masses are less than the characteristic energies available at colliders and their interactions with the SM particles are strong enough. But if the masses of new particles are too large, or the interactions with SM particles are too weak, then new particles cannot be detected directly. In this case, the new physics can lead to a modification of the interactions of SM particles, to subthreshold effects. We present„ the current status of an approach or formalism called the Standard Model Effective Field Theory (SMEFT), which allows„ us to describe and model deviations from the SM predictions in a theoretically consistent manner. The advantages of and serious problems with this approach are discussed.

Keywords: Standard Model, effective field theory, top quark, Higgs boson, higher-dimensional operators, unitarity, renormalizability
PACS: 12.15.−y, 12.60.−i, 14.80.Bn (all)
DOI: 10.3367/UFNe.2021.02.038916
URL: https://ufn.ru/en/articles/2022/7/b/
Web of Science

001100230300002
Scopus

2-s2.0-85148267039
ADS NASA

2022PhyU...65..653B
Citation: Boos E E "The SMEFT formalism: the basis for finding deviations from the Standard Model" Phys. Usp. 65 653–676 (2022)

BibTexBibNote ® (generic)BibNote ® (RIS)MedlineRefWorks

Received: 21st, December 2020, revised: 18th, January 2021, accepted: 12th, February 2021

Оригинал: Боос Э Э «Формализм SMEFT — основа поиска отклонений от Стандартной модели» УФН 192 697–721 (2022); DOI: 10.3367/UFNr.2021.02.038916

References (96) Cited by (2) Similar articles (20) ↓

E.E. Boos, O. Brandt et al “The top quark (20 years after the discovery)” 58 1133–1158 (2015)
Ch. Grojean “New approaches to electroweak symmetry breaking” 50 1–35 (2007)
S.N. Vergeles, N.N. Nikolaev et al “General relativity effects in precision spin experimental tests of fundamental symmetries” 66 109–147 (2023)
R.B. Nevzorov “Phenomenological aspects of supersymmetric extensions of the Standard Model” 66 543–575 (2023)
N.V. Krasnikov, V.A. Matveev “The search for new physics at the Large Hadron Collider” 47 643–670 (2004)
V.S. Berezinsky, V.I. Dokuchaev, Yu.N. Eroshenko “Small scale clumps of dark matter” 57 1–36 (2014)
V.A. Bednyakov, E.V. Khramov “Search for supersymmetry with R-parity violation at the ATLAS facility” 65 997–1019 (2022)
A.A. Ansel’m, N.G. Ural’tsev, V.A. Khoze “Higgs particles” 28 113–135 (1985)
V.A. Ryabov, V.A. Tsarev, A.M. Tskhovrebov “The search for dark matter particles” 51 1091–1121 (2008)
T. Konstandin “Quantum transport and electroweak baryogenesis” 56 747–771 (2013)
V.A. Rubakov “Large and infinite extra dimensions” 44 871–893 (2001)
E.P. Shabalin “What can be expected from the further study of CP and T symmetry violation and CPT invariance tests” 44 895–918 (2001)
B.A. Arbuzov “Models for violation of CP invariance” 11 493–499 (1969)
V.B. Adamskii “Local invariance and the theory of compensating fields” 4 607–616 (1962)
B.L. Ioffe “Chiral effective theory of strong interactions” 44 1211–1227 (2001)
A.G. Drutskoy “Experiments at the ILC linear collider: expected physical results” 62 450–464 (2019)
A.P. Serebrov “Fundamental interactions involving neutrons and neutrinos: reactor-based studies led by the Petersburg Nuclear Physics Institute (National Research Center "Kurchatov Institute") [PNPI (NRC KI)]” 58 1074–1094 (2015)
Yu.G. Kudenko “Study of neutrino oscillations in long-baseline accelerator experiments” 54 549–572 (2011)
A.E. Bondar, P.N. Pakhlov, A.O. Poluektov “Observation of CP violation in B-meson decays” 50 669–690 (2007)
L.G. Landsberg “Flavor changing neutral currents and rare decays of K-mesons” 46 995–1051 (2003)

The list is formed automatically.