PT Journal
AU Filipuzzi, A
TI Universality Violation In Leptonic W Decays: An Effective Field Theory Approach
SO Acta Physica Polonica B
PY 2011
BP 2453
EP 2459
VL 42
IS 11
DI 10.5506/APhysPolB.42.2453
AB We analyse the deviation from universality in leptonic W decays suggested by current PDG data within a general effective field theory approach. Considering the constraints to the New Physics effects coming from Electroweak precision observables we are able to set limits on the amount of universality violation that can be accounted for in a broad class of New Physics models. Our approach starts from a usual Single Operator analysis and extends up to considering the interplay of all the effective operators defined by our EFT.
ER