W mass and Triple Gauge Couplings at Tevatron

Laboratoire de l’Accélérateur Linére, B.P. 34 Orsay 91898 France

^a e-mail: petroff@lal.in2p3.fr

Abstract

The W mass is a crucial parameter in the Standard Model (SM) of particle physics, providing constraints on the mass of the Higgs boson as well as on new physics models via quantum loop corrections. On the other hand, any deviation of the triple gauge boson couplings (TGC) from their values predicted by the SM would be also an indication for new physics. We present recent measurements on W boson mass and searches for anomalous TGC (aTGC) in Wγ, Zγ, WW, WZ and ZZ at Fermilab Tevatron both by CDF and DØ Collaborations. The CDF Collaboration has measured the W boson mass using data corresponding to 2.2 fb⁻¹ of integrated luminosity. The measurement, performed using electron and muon decays of W boson, yields a mass of M_W = 80387 ± 19 MeV. The DØ Collaboration has measured M_W = 80367 ± 26 MeV with data corresponding to 4.3 fb⁻¹ of integrated luminosity in the channel W → ev. The combination with an earlier DØ result, using independant data sample at 1 fb⁻¹ of integrated luminosity, yields MW = 80375 ± 23 MeV. The limits on anomalous TGCs parameters are consistent with the SM expectations.