A direct measurement of the total decay width of the W boson ΓW is presented using 350pb-1 of data from pp̄ collisions at s=1.96TeV collected with the CDF II detector at the Fermilab Tevatron. The width is determined by normalizing predicted signal and background distributions to 230185 W candidates decaying to eν and μν in the transverse-mass region 50<MT<90GeV and then fitting the predicted shape to 6055 events in the high-MT region, 90<MT<200GeV. The result is ΓW=2032±45stat±57systMeV, consistent with the standard model expectation. © 2008 The American Physical Society

CDF Collaboration, T. Aaltonen, J. Adelman, T. Akimoto, M. G. Albrow, B. Álvarez González, et al. (2008). A Direct Measurement of the W Boson Width in p anti-p collisions at s**(1/2) = 1.96 TeV. PHYSICAL REVIEW LETTERS, 100(7), 1-7 [10.1103/PhysRevLett.100.071801].

A Direct Measurement of the W Boson Width in p anti-p collisions at s**(1/2) = 1.96 TeV

BRIGLIADORI, LUCA;CASTRO, ANDREA;DENINNO, MARIA MADDALENA;MOGGI, NICCOLO';MUSSINI, MANUEL;RIMONDI, FRANCO;ZUCCHELLI, STEFANO
2008

Abstract

A direct measurement of the total decay width of the W boson ΓW is presented using 350pb-1 of data from pp̄ collisions at s=1.96TeV collected with the CDF II detector at the Fermilab Tevatron. The width is determined by normalizing predicted signal and background distributions to 230185 W candidates decaying to eν and μν in the transverse-mass region 50
2008
CDF Collaboration, T. Aaltonen, J. Adelman, T. Akimoto, M. G. Albrow, B. Álvarez González, et al. (2008). A Direct Measurement of the W Boson Width in p anti-p collisions at s**(1/2) = 1.96 TeV. PHYSICAL REVIEW LETTERS, 100(7), 1-7 [10.1103/PhysRevLett.100.071801].
CDF Collaboration; T. Aaltonen; J. Adelman; T. Akimoto; M. G. Albrow; B. Álvarez González; S. Amerio; D. Amidei; A. Anastassov; A. Annovi; J. Antos; M...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/59330
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