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Study of spin and decay-plane correlations of W bosons in the e + e\(^-\rightarrow\) W + W- process at LEP

  • experimental physics
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Abstract.

Data collected at LEP at centre-of-mass energies \(\sqrt{s} = 189-209\) GeV are used to study correlations of the spin of W bosons using \(\mathrm{e}^ + \mathrm{e}^-\to \mathrm{W}^ + \mathrm{W}^-\to {\ensuremath{\ell\nu\mathrm{q\bar{q}}}}\) events. Spin correlations are favoured by data, and found to agree with the Standard Model predictions. In addition, correlations between the W-boson decay planes are studied in \(\mathrm{e}^ + \mathrm{e}^-{}\to{}\mathrm{W}^ + \mathrm{W}^- \to{}{\ensuremath{\ell\nu\mathrm{q\bar{q}}}}\) and \(\mathrm{e}^ + \mathrm{e}^-{}\to{}\mathrm{W}^ + \mathrm{W}^-{}\to{}{\ensuremath{\text{q}\bar{\text{q}}\text{q}\bar{\text{q}}}}{}\) events. Decay-plane correlations are measured to be consistent with the Standard Model predictions.

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Received: 26 October 2004, Revised: 15 January 2005, Published online: 3 March 2005

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The L3 Collaboration. Study of spin and decay-plane correlations of W bosons in the e + e\(^-\rightarrow\) W + W- process at LEP. Eur. Phys. J. C 40, 333–341 (2005). https://doi.org/10.1140/epjc/s2005-02137-9

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  • DOI: https://doi.org/10.1140/epjc/s2005-02137-9

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