Kinematics in the e⁺e⁻ collision frame of the reaction e⁺e⁻→Zγ followed by Z→f f-bar decay. (IMAGE)

Science China Press

Kinematics in the e⁺e⁻ collision frame of the reaction e⁺e⁻→Zγ followed by Z→f f-bar decay.

Caption

In this plot, θ denotes the polar scattering angle between the directions of the outgoing Z and the initial state e⁻, and ϕ∗ is defined as the angle between the scattering plane and the decay plane of the final state Z boson in the center-of-mass frame of e⁻e⁺.

 

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