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version 1.1, 2004/04/23 18:13:18
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version 1.2, 2004/05/04 20:57:17
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| sig=sig219/1.d+06 !dsig/dtdphicm in microbarns/MeV**2/rad | sig=sig219/1.d+06 !dsig/dtdphicm in microbarns/MeV**2/rad |
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C DJG Convert to dsig/dOmega_cm using dt/d(costhetacm) = 2 qcm pcm |
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sig = sig*2.*qstar*ppicm |
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| ******************************************************************************* | ******************************************************************************* |
| * GMH: Virtual photon to electron beam flux conversion factor | * GMH: Virtual photon to electron beam flux conversion factor |
| gtpr = alpha/2./(pi**2)*vertex.e.E/vertex.Ein*(s-(targ.Mtar_struck/1000.)**2)/2./ | gtpr = alpha/2./(pi**2)*vertex.e.E/vertex.Ein*(s-(targ.Mtar_struck/1000.)**2)/2./ |
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| > ( efer+vertex.nu-(vertex.q+pferz*pfer)*vertex.p.E/vertex.p.P*tcos ) | > ( efer+vertex.nu-(vertex.q+pferz*pfer)*vertex.p.E/vertex.p.P*tcos ) |
| > - 2*vertex.p.P*pfer | > - 2*vertex.p.P*pfer |
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| davesig = gtpr*sig*jacobian |
c davesig = gtpr*sig*jacobian |
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davesig = gtpr*sig |
| sigma_eerho = davesig/1.d3 !ub/GeV-sr --> ub/MeV-sr | sigma_eerho = davesig/1.d3 !ub/GeV-sr --> ub/MeV-sr |
| peerho = sigma_eerho | peerho = sigma_eerho |
| ntup.sigcm = sig !sig_cm | ntup.sigcm = sig !sig_cm |
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