Code of online KIAS QUC-AIHEP seminars via Zoom

  • Register full name in Latin alphabets
  • Unmute microphone and ask questions or make comments anytime
  • Keep microphone muted otherwise (to reduce noise)
  • Turn on webcam if possible when you speak

High-precision measurement of the W boson mass with the CDF II detector

by Prof. Ashutosh Kotwal (Duke University)

1423 in building 1 (KIAS)

1423 in building 1



Title: High-precision measurement of the W boson mass with the CDF II detector

Speaker: Ashutosh V. Kotwal (Duke University)

Abstract: The mass of the W boson, a mediator of the weak force between elementary particles, is tightly constrained by the symmetries of the standard model of particle physics.  The Higgs boson was the last missing component of the model.  After observation of the Higgs boson, a measurement of the W boson mass provides a stringent test of the model.  We measure the W boson mass, Mᴡ, using data corresponding to 8.8 inversefemtobarns of integrated luminosity collected in proton-antiproton collisions at a 1.96 TeV center-of-mass energy with the CDF II detector at the Fermilab Tevatron collider.  A sample of approximately 4 million W boson candidates is used to obtain Mᴡ=80,433.5±6.4stat±6.9syst=80,433.5±9.4 MeV/c², the precision of which exceeds that of all previous measurements combined.  This measurement is in significant tension with the standard model expectation.

See also: CDF Mᴡ workshop on 24 June

[Seminar] Ashutosh Kotwal
Zoom Meeting ID
KIAS HEP-PH Organizer
Zoom URL