Exact SMEFT formulation and expansion to O(ν4/λ4)

Research output: Contribution to journal › Journal article › Research › peer-review

Standard

Exact SMEFT formulation and expansion to O(ν4/λ4). / Hays, Chris; Helset, Andreas; Martin, Adam; Trott, Michael.

In: Journal of High Energy Physics, Vol. 2020, No. 11, 87, 17.11.2020.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Hays, C, Helset, A, Martin, A & Trott, M 2020, 'Exact SMEFT formulation and expansion to O(ν4/λ4)', Journal of High Energy Physics, vol. 2020, no. 11, 87. https://doi.org/10.1007/JHEP11(2020)087

APA

Hays, C., Helset, A., Martin, A., & Trott, M. (2020). Exact SMEFT formulation and expansion to O(ν4/λ4). Journal of High Energy Physics, 2020(11), [87]. https://doi.org/10.1007/JHEP11(2020)087

Vancouver

Hays C, Helset A, Martin A, Trott M. Exact SMEFT formulation and expansion to O(ν4/λ4). Journal of High Energy Physics. 2020 Nov 17;2020(11). 87. https://doi.org/10.1007/JHEP11(2020)087

Author

Hays, Chris ; Helset, Andreas ; Martin, Adam ; Trott, Michael. / Exact SMEFT formulation and expansion to O(ν4/λ4). In: Journal of High Energy Physics. 2020 ; Vol. 2020, No. 11.

Bibtex

@article{718ddad59c0640319af9926dbb5ab035,
title = "Exact SMEFT formulation and expansion to O(ν4/λ4)",
abstract = "The Standard Model Effective Field Theory (SMEFT) theoretical framework is increasingly used to interpret particle physics measurements and constrain physics beyond the Standard Model. We investigate the truncation of the effective-operator expansion using the geometric formulation of the SMEFT, which allows exact solutions, up to mass-dimension eight. Using this construction, we compare the exact solution to the expansion at O(v(2)/Lambda (2)), partial O(v(4)/Lambda (4)) using a subset of terms with dimension-6 operators, and full O(v(4)/Lambda (4)), where v is the vacuum expectation value and Lambda is the scale of new physics. This comparison is performed for general values of the coefficients, and for the specific model of a heavy U(1) gauge field kinetically mixed with the Standard Model. We additionally determine the input-parameter scheme dependence at all orders in v/Lambda, and show that this dependence increases at higher orders in v/Lambda.",
keywords = "Beyond Standard Model, Effective Field Theories, INFRARED SINGULARITIES, HIGGS",
author = "Chris Hays and Andreas Helset and Adam Martin and Michael Trott",
year = "2020",
month = nov,
day = "17",
doi = "10.1007/JHEP11(2020)087",
language = "English",
volume = "2020",
journal = "Journal of High Energy Physics (Online)",
issn = "1126-6708",
publisher = "Springer",
number = "11",

}

RIS

TY - JOUR

T1 - Exact SMEFT formulation and expansion to O(ν4/λ4)

AU - Hays, Chris

AU - Helset, Andreas

AU - Martin, Adam

AU - Trott, Michael

PY - 2020/11/17

Y1 - 2020/11/17

N2 - The Standard Model Effective Field Theory (SMEFT) theoretical framework is increasingly used to interpret particle physics measurements and constrain physics beyond the Standard Model. We investigate the truncation of the effective-operator expansion using the geometric formulation of the SMEFT, which allows exact solutions, up to mass-dimension eight. Using this construction, we compare the exact solution to the expansion at O(v(2)/Lambda (2)), partial O(v(4)/Lambda (4)) using a subset of terms with dimension-6 operators, and full O(v(4)/Lambda (4)), where v is the vacuum expectation value and Lambda is the scale of new physics. This comparison is performed for general values of the coefficients, and for the specific model of a heavy U(1) gauge field kinetically mixed with the Standard Model. We additionally determine the input-parameter scheme dependence at all orders in v/Lambda, and show that this dependence increases at higher orders in v/Lambda.

AB - The Standard Model Effective Field Theory (SMEFT) theoretical framework is increasingly used to interpret particle physics measurements and constrain physics beyond the Standard Model. We investigate the truncation of the effective-operator expansion using the geometric formulation of the SMEFT, which allows exact solutions, up to mass-dimension eight. Using this construction, we compare the exact solution to the expansion at O(v(2)/Lambda (2)), partial O(v(4)/Lambda (4)) using a subset of terms with dimension-6 operators, and full O(v(4)/Lambda (4)), where v is the vacuum expectation value and Lambda is the scale of new physics. This comparison is performed for general values of the coefficients, and for the specific model of a heavy U(1) gauge field kinetically mixed with the Standard Model. We additionally determine the input-parameter scheme dependence at all orders in v/Lambda, and show that this dependence increases at higher orders in v/Lambda.

KW - Beyond Standard Model

KW - Effective Field Theories

KW - INFRARED SINGULARITIES

KW - HIGGS

U2 - 10.1007/JHEP11(2020)087

DO - 10.1007/JHEP11(2020)087

M3 - Journal article

VL - 2020

JO - Journal of High Energy Physics (Online)

JF - Journal of High Energy Physics (Online)

SN - 1126-6708

IS - 11

M1 - 87

ER -

ID: 253140745