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CP violation at CDF.


DE2001777594

Publication Date 2001
Personal Author Boudreau, J.
Page Count 15
Abstract A major goal of experimental particle physics over the next decade is to measure the sides and angles of the Unitarity triangle redundantly, and as precisely as possible. Overconstraining the triangle will test the Cabbibo-Kobayashi-Maskawa model of quark mixing. The CDF collaboration, due to begin a second run in March 2001 with major upgrades to both the accelerator and the detector, will study the angle (beta) using B(sup 0) decays, the angle (gamma) using B(sup 0) and B(sub s)(sup 0) decays, and a side of the triangle through the observation of B(sub s)(sup 0)--(bar B)(sub s)(sup 0) mixing. Projected sensitivities are driven mostly by previous measurements using data from the first run. One highlight of the Run I B physics program is a measurement of the CP violating parameter sin 2(beta) = 0.79(sub (minus)0.44)(sup +0.41), based on a tagged sample of 400 B(sup 0) decays in the mode B(sub 0)/(bar B)(sup 0) (r-arrow) J/(psi)K(sub s)(sup 0). The technology of flavor tagging, used here as well as in numerous B(sup 0)-(bar B)(sup 0) mixing analyses in run I, is crucial and will be augmented in Run II with better particle identification capabilities. Exclusive all-hadronic final states will enter the data sample in Run II through a new displaced track trigger.
Keywords
  • Accelerators
  • Fermilab collider detector
  • Cp invariance
  • Unitarity
  • Particle identification
  • Quarks
  • Unitary symmetry
  • Cabibbo angle
  • Kobayashi-maskawa matrix
Source Agency
  • Technical Information Center Oak Ridge Tennessee
Corporate Authors Fermi National Accelerator Lab., Batavia, IL.; Department of Energy, Washington, DC.
Document Type Conference Proceedings
NTIS Issue Number 200125
Contract Number
  • AC02-76CH03000
CP violation at CDF.
CP violation at CDF.
DE2001777594

  • Accelerators
  • Fermilab collider detector
  • Cp invariance
  • Unitarity
  • Particle identification
  • Quarks
  • Unitary symmetry
  • Cabibbo angle
  • Kobayashi-maskawa matrix
  • Technical Information Center Oak Ridge Tennessee
  • AC02-76CH03000
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