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Title: Putting standard model EFT fits to work

Abstract

The Standard Model Effective Field Theory (SMEFT) provides a consistent framework for comparing precision measurements at the LHC to the Standard Model. The observation of statistically significant non-zero SMEFT coefficients would correspond to physics beyond the Standard Model (BSM) of some sort. A more difficult question to answer is what, if any, detailed information about the nature of the underlying high scale model can be obtained from these measurements. In this work, we consider the patterns of SMEFT operators present in five example models and discuss the assumptions inherent in using global fits to make BSM conclusions. We find that including renormalization group effects has a significant impact on the interpretation of the results. As a by-product of our study, we present an up-dated global fit to SMEFT coefficients in the Warsaw basis including some next-to-leading order QCD corrections in the SMEFT theory.

Authors:
ORCiD logo; ;
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP); National Science Foundation (NSF)
OSTI Identifier:
1661700
Alternate Identifier(s):
OSTI ID: 1679956
Report Number(s):
BNL-219970-2020-JAAM
Journal ID: ISSN 2470-0010; PRVDAQ; 055012
Grant/Contract Number:  
SC0012704; PHY-1915093; SC0014664
Resource Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Name: Physical Review D Journal Volume: 102 Journal Issue: 5; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Extensions of Higgs sector

Citation Formats

Dawson, Sally, Homiller, Samuel, and Lane, Samuel D. Putting standard model EFT fits to work. United States: N. p., 2020. Web. https://doi.org/10.1103/PhysRevD.102.055012.
Dawson, Sally, Homiller, Samuel, & Lane, Samuel D. Putting standard model EFT fits to work. United States. https://doi.org/10.1103/PhysRevD.102.055012
Dawson, Sally, Homiller, Samuel, and Lane, Samuel D. Tue . "Putting standard model EFT fits to work". United States. https://doi.org/10.1103/PhysRevD.102.055012.
@article{osti_1661700,
title = {Putting standard model EFT fits to work},
author = {Dawson, Sally and Homiller, Samuel and Lane, Samuel D.},
abstractNote = {The Standard Model Effective Field Theory (SMEFT) provides a consistent framework for comparing precision measurements at the LHC to the Standard Model. The observation of statistically significant non-zero SMEFT coefficients would correspond to physics beyond the Standard Model (BSM) of some sort. A more difficult question to answer is what, if any, detailed information about the nature of the underlying high scale model can be obtained from these measurements. In this work, we consider the patterns of SMEFT operators present in five example models and discuss the assumptions inherent in using global fits to make BSM conclusions. We find that including renormalization group effects has a significant impact on the interpretation of the results. As a by-product of our study, we present an up-dated global fit to SMEFT coefficients in the Warsaw basis including some next-to-leading order QCD corrections in the SMEFT theory.},
doi = {10.1103/PhysRevD.102.055012},
journal = {Physical Review D},
number = 5,
volume = 102,
place = {United States},
year = {2020},
month = {9}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1103/PhysRevD.102.055012

Figures / Tables:

TABLE I TABLE I: Dimension-6 operators in the Warsaw basis that are considered in this study. The fermion labels $u$, $d$, $e$ refer generically to all 3 generations and similarly for the quark, $q$, and lepton, $l$, doublets.

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