¹ ABBIENDI 2006A measure $\langle \mathit N_{{\mathrm {charged}}}\rangle $ = $38.74$ $\pm0.12$ $\pm0.26$ when both ${{\mathit W}}$ bosons decay hadronically and $\langle \mathit N_{{\mathrm {charged}}}\rangle $ = $19.39$ $\pm0.11$ $\pm0.09$ when one ${{\mathit W}}$ boson decays semileptonically. The value quoted here is obtained under the assumption that there is no color reconnection between ${{\mathit W}}$ bosons; the value is a weighted average taking into account correlations in the systematic uncertainties.

² ABREU,P 2000F measure $\langle{}\mathit N_{{\mathrm {charged}}}\rangle{}$ = $39.12$ $\pm0.33$ $\pm0.36$ and $38.11$ $\pm0.57$ $\pm0.44$ in the fully hadronic final states at 189 and 183 GeV respectively, and $\langle{}\mathit N_{{\mathrm {charged}}}\rangle{}$ = $19.49$ $\pm0.31$ $\pm0.27$ and $19.78$ $\pm0.49$ $\pm0.43$ in the semileptonic final states. The value quoted is a weighted average without assuming any correlations.

³ ABBIENDI 1999N use the final states ${{\mathit W}^{+}}$ ${{\mathit W}^{-}}$ $\rightarrow$ ${{\mathit q}}{{\overline{\mathit q}}}{{\mathit \ell}}{{\overline{\mathit \nu}}_{{{{{\mathit \ell}}}}}}$ to derive this value.

⁴ ABREU 1998C combine results from both the fully hadronic as well semileptonic ${{\mathit W}}{{\mathit W}}$ final states after demonstrating that the ${{\mathit W}}$ decay charged multiplicity is independent of the topology within errors.

References:

ABBIENDI

2006A

EPJ C45 291

Colour Reconnection in ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit W}^{+}}{{\mathit W}^{-}}$ at $\sqrt {s }$ =$180 - 209$ GeV

ABREU,P

2000F

EPJ C18 203

Charged and Identified Particles in the Hadronic Decay of ${{\mathit W}}$ Bosons and in ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${\mathit {\mathit q}}$ ${\mathit {\overline{\mathit q}}}$ from 130 to 200 GeV

Also

EPJ C25 493 (errat.)

Erratum: ABREU,P 2000F Charged and Identified Particles in the Hadronic Decay of ${{\mathit W}}$ Bosons and in ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${\mathit {\mathit q}}$ ${\mathit {\overline{\mathit q}}}$ from 130 to 200 Gev

ABBIENDI

1999N

PL B453 153

Color Reconnection Studies in ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit W}^{+}}{{\mathit W}^{-}}$ at $\sqrt {s }$ = 183 GeV

ABREU

1998C

PL B416 233

Charged Particle Multiplicity in ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${\mathit {\mathit q}}$ ${\mathit {\overline{\mathit q}}}$ Events at 161 and 172 GeV and from the Decay of the ${{\mathit W}}$ Boson