Measurement of Time Dependent $$B^0_d \bar{B}^0_d$$ Mixing Parameter using Opposite Side Lepton and $D^*$ Meson in $$p\bar{p}$$ Collisions at $$\sqrt{s}$$ = 1.8-TeV

Thesis/Dissertation · Wed Jan 01 04:00:00 EST 1997

DOI:https://doi.org/10.2172/1421707· OSTI ID:1421707

Vandenbrink, Stephan Christopher ^[1]

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1. Pittsburgh U.

This thesis presents the results from the investigation of time dependent $$B^0_d B^0_d$$ mixing in $$B \to lepton$$ X, $$B^0_d \to D^{*-} X$$, $$\bar{D}^{*-}\to \bar{D}^0 \pi^-$$, $$\bar{D}^0 \to K^+ \pi^-$$ channel in $$p\bar{p}$$ collisions at $$\sqrt{s}$$ = 1.8 TeV using 110 $$pb^{-1}$$ data collected with the CDF detector at the Fermilab Tevatron Collider. The $D^0$ vertex is reconstructed. The B0 d decay length is estimated using the distance from the primary vertex to the measured position of the D0 vertex. The B0 momentum is estimated using the $D^0$ momentum and a kinematic correction factor from Monte Carlo. With the dilution floating, $$\Delta M_d = 0.55 \pm ^{0.15}_{0.16} (stat) \pm 0.06 (syst)$$$$ ps^{-1}$$ is measured.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1421707
• Report Number(s): FERMILAB-THESIS-1998-30; UMI-98-21292; 455018
• Country of Publication: United States
• Language: English

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS