Possible reduction of the total uncertainty on the W boson mass measured at LEP2 [article]

Jorgen D'Hondt
2002 arXiv   pre-print
An alternative W mass estimator in e+e- -> WW -> qqqq events at LEP2 is designed to optimize the balance between the statistical uncertainty and the systematic uncertainty due to a possible Colour Reconnection effect. The preliminary result for the total uncertainty on the W mass in this channel is roughly 30 % lower then those obtained with the standard estimators, based on the SKI implementation of Colour Reconnection. Also an indirect measurement of the SKI Colour Reconnection model
more » ... kappa is inferred from the difference between both W mass estimators.
arXiv:hep-ex/0205036v1 fatcat:d3n66kle3rf5xigy3jtqa5cugi