Amplitude Zeros and Rapidity Correlations in $Wγ$ and $WZ$ Production in Hadronic Collisions

Details Amplitude Zeros and Rapidity Correlations in $Wγ$ and $WZ$ Production in Hadronic Collisions Amplitude Zeros and Rapidity Correlations in $Wγ$ and $WZ$ Production in Hadronic Collisions

1994-08-15

arxiv.org/abs/hep-ph/9408295v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, talk given at the DPF94 conference, Albuquerque, NM, August 2 - 6, 1994, uuencoded postscript file, FSU-HEP-940815

Scientific paper

A comparative study of amplitude zeros in $W\gamma$ and $WZ$ production in hadronic collisions is presented. The Standard Model amplitude for $q_1 \bar q_2 \rightarrow W^\pm Z $ at the Born-level is shown to exhibit an approximate zero located at $\cos\theta = (g^{q_1}_{-} + g^{q_2}_{-}) / (g^{q_1}_{-} - g^{q_2}_{-})$ at high energies, where the $g^{q_i}_{-}$ ($i=1,2$) are the left-handed couplings of the $Z$-boson to quarks and $\theta$ is the center of mass scattering angle of the $W$-boson. This approximate zero is similar to the well-known radiation zero in $W\gamma$ production. Prospects to observe the amplitude zeros using rapidity correlations between the final state particles are explored.

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