Complete one-loop matching for a singlet scalar in the Standard Model EFT

Jiang, Minyuan (0000 0001 2314 964X, Department of Physics, Nanjing University, Nanjing, 210098, China) (0000 0004 1936 9676, Department of Physics, University of California, Santa Barbara, CA, 93106, U.S.A.) ; Craig, Nathaniel (0000 0004 1936 9676, Department of Physics, University of California, Santa Barbara, CA, 93106, U.S.A.) (0000 0004 1936 9676, Kavli Institute for Theoretical Physics, Santa Barbara, CA, 93106, U.S.A.) ; Li, Ying-Ying (0000 0004 1936 9676, Kavli Institute for Theoretical Physics, Santa Barbara, CA, 93106, U.S.A.) (0000 0004 1937 1450, Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong S.A.R., China) ; Sutherland, Dave (0000 0004 1936 9676, Department of Physics, University of California, Santa Barbara, CA, 93106, U.S.A.)

10 February 2019

Abstract: We present the results of the first complete one-loop matching calculation between the real singlet scalar extension of the Standard Model and the Standard Model effective field theory (SMEFT) at dimension six. Beyond their immediate relevance to the precision calculation of observables in singlet extensions of the Standard Model, our results illustrate a variety of general features of one-loop matching. We explore the interplay between non-supersymmetric non-renormalization theorems, the logarithmic dependence of Wilson coefficients, and the relevance of mixed diagrams in theories with large scale separation. In addition, we highlight some of the subtleties involved in computing observables at next-to-leading order in SMEFT by mapping our results to the T parameter at one loop.


Published in: JHEP 1902 (2019) 031
Published by: Springer/SISSA
DOI: 10.1007/JHEP02(2019)031
arXiv: 1811.08878
License: CC-BY-4.0



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