A proper time dependent measurement of delta M^D using jet charge and soft lepton flavor tagging

Thesis/Dissertation · Thu Jan 01 04:00:00 EST 1998

DOI:https://doi.org/10.2172/3127· OSTI ID:3127

Long, Owen R. ^[1]

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1. Univ. of Pennsylvania, Philadelphia, PA (United States); Fermilab

This thesis presents a proper time dependent measurement of the B$$0\atop{d}$$ mixing frequency Δm_d using jet charge and soft lepton flavor tagging in p-$$\bar{p}$$ collisions at √s=1.8 TeV. The measurement uses the inclusive e and μ trigger data of the CDF detector from an integrated luminosity of 91 pb^-1. The proper time at decay is measured from a partial reconstruction of the B associated with the trigger lepton. The measurement of Δm_d yields Δm_d=0.50±0.05±0.05 $$\bar{h}$$ ps^-12 of - Jet Charge: εD² = (0.78 ± 0.12 ± 0.09) % - Soft Lepton: εD² = (1.07 ± 0.09 ± 0.10) % where the first error is statistical and the second systematic.

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Energy Research (ER)
• DOE Contract Number: AC02-76CH03000
• OSTI ID: 3127
• Report Number(s): FERMILAB-THESIS--1998-18; ON: DE00003127
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
DECAY
EFFICIENCY
FERMILAB COLLIDER DETECTOR
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LUMINOSITY