Measurement of the $$B_c^{\pm}$$ meson lifetime using $$B_c^{\pm} \to J/\psi~\pi^{\pm}$$ decays

Thesis/Dissertation · Tue Jan 01 00:00:00 EST 2013

DOI:https://doi.org/10.2172/1127971· OSTI ID:1127971

Song, Hao ^[1]

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1. Univ. of Pittsburgh, PA (United States)

This thesis describes a measurement of the lifetime of the B^± _c meson in an exclusive decay channel B^± _c → J/ ψ π^±, where the J/ψ decays as J/ψ → μ⁺μ^- . The measurement uses a data sample with an integrated luminosity of 6.7 fb^-1 collected at CDF. This is the first measurement of the B^± _c meson lifetime in a hadronic channel and the measured lifetime, τ = 0.449 ^+0.054 _-0.048(stat:) ± 0.019(syst:) ps, is in good agreement with previous results obtained from semileptonic decay channel and confirms previous measurements and theoretical predictions.

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP)
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1127971
• Report Number(s): FERMILAB-THESIS-2013-05
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS