On the implications of positive W mass shift

Journal Article · 19 May 2022 · Journal of High Energy Physics (Online)

DOI: https://doi.org/10.1007/jhep05(2022)133 · OSTI ID:1976478

Balkin, Reuven ^[1]; Madge, Eric ^[2]; Menzo, Tony ^[3]; Perez, Gilad ^[2]; Soreq, Yotam  ^[4]; Zupan, Jure ^[3]

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1. Technion-Israel Institute of Technology, Haifa (Israel); Technion-Israel Institute of Technology, Haifa (Israel)
2. Weizmann Institute of Science, Rehovot (Israel)
3. University of Cincinnati, OH (United States)
4. Technion-Israel Institute of Technology, Haifa (Israel)

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.

• Research Organization: University of Cincinnati, OH (United States)
• Sponsoring Organization: Azrieli foundation; Israel Science Foundation (ISF); Maurice and Vivienne Wohl Endowment; Minerva Foundation; National Science Foundation (NSF); U.S-Israel Binational Science Foundation (BSF); USDOE Office of Science (SC)
• Grant/Contract Number: SC0011784
• OSTI ID: 1976478
• Journal Information: Journal of High Energy Physics (Online), Journal Name: Journal of High Energy Physics (Online) Journal Issue: 5 Vol. 2022; ISSN 1029-8479
• Publisher: Springer NatureCopyright Statement
• Country of Publication: United States
• Language: English