Prompt electron production in $e^+e^-$ annihilations at 29-GeV

We have measured the inclusive prompt electron cross section over a wide momentum range (P>0.5 GeV/c) with the PEP-4 TPC detector. The semielectronic branching fractions of thec andb quarks are (9.1±0.9 (stat.)±1.3 (syst.))% and (11.0±1.8±1.0)%, respectively. Theb quark fragmentation function peaks at highz with 〈zb〉=0.74±0.05±0.03. The axial couplings to the neutral current areac=2.3±1.4±1.0 for thec quark andab=−2.0±1.9±0.5 for theb quark.

ELECTRON POSITRON: COLLIDING BEAMS
COLLIDING BEAMS: ELECTRON POSITRON
ELECTRON POSITRON: ANNIHILATION
ANNIHILATION: ELECTRON POSITRON
ELECTRON: ELECTROPRODUCTION
ELECTROPRODUCTION: ELECTRON
ELECTRON: DIRECT PRODUCTION
DIRECT PRODUCTION: ELECTRON
JET: ELECTROPRODUCTION
ELECTROPRODUCTION: JET

References(20)

Figures(0)

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Prompt electron production in e+e−e^+e^-e+e− annihilations at 29-GeV

Citations per year

Prompt electron production in $e^+e^-$ annihilations at 29-GeV