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Dear All:</div>
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Just want to let everyone know that I found the answers, in fact two of them:</div>
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1) d^2 sigma/dx/dQ2 = (pi*nu) / (x*E*E’) d2sigma/dE’/dOmega </div>
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<font size="2"><span style="font-size: 12pt;">2) </span><span style="font-size:11pt">d^2 Sigma / (dE' dOmega) = (E E' / Pi) d^2 Sigma / (dnu dQ2)<br>
</span><span style="font-size: 12pt;">d^2 Sigma / (dnu dQ2) = (2 M x^2 / Q2) d^2 Sigma / (dx dQ2)</span></font></div>
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<font size="2"><span style="font-size: 12pt;">Thanks to you all!</span></font></div>
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<font size="2"><span style="font-size:11pt">(PS: the two agree.)</span></font></div>
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<font size="2"><span style="font-size: 12pt;">Xiaochao</span></font><br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> A1n_d2n <a1n_d2n-bounces@jlab.org> on behalf of Xiaochao Zheng <xiaochao@jlab.org><br>
<b>Sent:</b> Tuesday, March 16, 2021 8:57 PM<br>
<b>To:</b> A1n d2n <a1n_d2n@jlab.org><br>
<b>Subject:</b> [A1n_d2n] Jacobian question</font>
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Hi all:</div>
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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?</div>
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(I know the math, but would like to be lazy and skip 30min of derivation.)</div>
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Thanks in advance!<br>
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Xiaochao<br>
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