TY - JOUR
T1 - On the implications of positive W mass shift
AU - Balkin, Reuven
AU - Madge, Eric
AU - Menzo, Tony
AU - Perez, Gilad
AU - Soreq, Yotam
AU - Zupan, Jure
PY - 2022/5/20
Y1 - 2022/5/20
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85130368844&partnerID=8YFLogxK
U2 - 10.1007/JHEP05(2022)133
DO - 10.1007/JHEP05(2022)133
M3 - Article
SN - 1029-8479
VL - 2022
JO - The journal of high energy physics
JF - The journal of high energy physics
IS - 5
M1 - 133
ER -