On the implications of positive W mass shift

Reuven Balkin, Eric Madge, Tony Menzo, Gilad Perez, Yotam Soreq*, Jure Zupan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

38 Citations (Scopus)

Abstract

We investigate the phenomenological implications of the recent W mass measurement by the CDF collaboration, which exhibits tension with the standard model (SM) electroweak fit. Performing the fit to the electroweak observables within the SM effective field theory, we find that the new physics that contributes either to the determination of the electroweak vacuum expectation value, or to the oblique parameters, can improve the agreement with data. The best description is obtained from a fit where flavor universality is not required in the new physics operators, with 2 to 3 σ indications for several nonzero Wilson coefficients. We point out that top partners with order TeV masses could lead to the observed shift in the W mass.
Original languageEnglish
Article number133
Number of pages19
JournalThe journal of high energy physics
Volume2022
Issue number5
DOIs
Publication statusPublished - 20 May 2022

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