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NMHV 5 Gluon Scattering (Elvang and Huang, Ex 3.11)
In Elvang and Huang's Scattering Amplitudes in Gauge Theory and Gravity, Exercise (3.10) (Exercise (3.11) in the printed version) asks the reader to construct the NMHV scattering amplitude of five ...
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Altarelli-Parisi Splitting Function $P_{qq}(z)$ vanishing integral if and only if quark flavour sum rules and equivalence
Question 1: I believe both questions are in the context of Deep Inelastic Scattering. I've been given the expression for $F_{2}^{ep}(x)=(\frac{2}{3})^2[u(x)+\bar{u}(x)]
+(\frac{1}{3})^2[d(x) + \bar{d}(...
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