Combination of CDF and D0 results on the W boson mass and width

Group, Tevatron Electroweak Working

关键词: DECAY;    DISTRIBUTION FUNCTIONS;    FERMILAB;    FERMILAB COLLIDER DETECTOR;    FERMILAB TEVATRON;    INTERMEDIATE BOSONS Experiment-HEP;   

DOI  :  10.2172/936346
RP-ID  :  FERMILAB-TM-2415
PID  :  OSTI ID: 936346
Others  :  Other: arXiv eprint number arXiv:0808.0147
Others  :  TRN: US0805537

学科分类：物理（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

The results on the direct measurements of the W-boson mass and width, based on the data collected by the Tevatron experiments CDF and D{sup -} at Fermilab are summarized and combined. The CDF Run-0 (1988-1889) and Run-I (1992-1995) results have been re-averaged using the BLUE method and combined with Run-I D{sup -} results and the latest published results from CDF taken from the first period of Run-II (2001-2004). The results are corrected to have consistency between the parton distribution functions and electroweak parameters. The resulting Tevatron averages for the mass and total decay width of the W boson are: M{sub W} = 80432 {+-} 39 MeV and {Lambda}{sub W} = 2056 {+-} 62 MeV. The inclusion of a preliminary Run-II measurement of {Lambda}{sub W} from D{sup -}0 gives {Lambda}{sub W} = 2050 {+-} 58 MeV.