Measurement of the B{sub c}{sup +} Meson Lifetime Using the Decay Mode B{sub c}{sup +}{yields}J/{psi}e{sup +}{nu}{sub e}

Journal Article · Fri Jul 07 00:00:00 EDT 2006 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.97.012002· OSTI ID:20777372

Abulencia, A; Budd, S; Chu, P H; Ciobanu, C I; Errede, D; Errede, S; Gerberich, H; Grundler, U; Junk, T R; Kraus, J; Liss, T M; Marino, C; Pitts, K; Rogers, E; Taffard, A; Veramendi, G; Zhang, X ^[1]; Acosta, D; Cruz, A; Field, R ^[2]

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1. University of Illinois, Urbana, Illinois 61801 (United States)
2. University of Florida, Gainesville, Florida 32611 (United States)

We present a measurement of the B{sub c}{sup +} meson lifetime in the decay mode B{sub c}{sup +}{yields}J/{psi}e{sup +}{nu}{sub e} using the Collider Detector at Fermilab II detector at the Fermilab Tevatron Collider. From a sample of about 360 pb{sup -1} of pp collisions at {radical}(s)=1.96 TeV, we reconstruct J/{psi}e{sup +} pairs with invariant mass in the kinematically allowed range 4<M{sub J/{psi}}{sub e}<6 GeV/c{sup 2}. A fit to the decay-length distribution of 238 signal events yields a measured B{sub c}{sup +} meson lifetime of 0.463(+0.073/-0.065)(stat){+-}0.036(syst) ps.

• OSTI ID: 20777372
• Journal Information: Physical Review Letters, Vol. 97, Issue 1; Other Information: DOI: 10.1103/PhysRevLett.97.012002; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B PLUS MESONS
ELECTRON NEUTRINOS
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FERMILAB TEVATRON
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LIFETIME
MASS
PARTICLE DECAY
POSITRONS
PROTON-PROTON INTERACTIONS
SIGNALS
TEV RANGE 01-10