[A1n_d2n] Jacobian question

[Xiaochao Zheng]

Hi all:

Sorry to bother everyone, but does anyone have a well-derived (or a textbook equation) for the Jacobian to convert d^2sigma/dE'/dOmega into d^2sigma/dx/dQ2?

(I know the math, but would like to be lazy and skip 30min of derivation.)

Thanks in advance!

Xiaochao
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