Difference between revisions of "Mattione DCdEdx Study"
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//during reconstruction: | //during reconstruction: | ||
//compute dE/dx separately for fdc & cdc (reject 1 of the materials if significantly fewer hits than the other) (reject largest hits of each (separately)) | //compute dE/dx separately for fdc & cdc (reject 1 of the materials if significantly fewer hits than the other) (reject largest hits of each (separately)) | ||
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//to find means & chisq's (for fdc & cdc separately): | //to find means & chisq's (for fdc & cdc separately): | ||
//tree: beta, x, and dE/dx | //tree: beta, x, and dE/dx | ||
| + | </pre> | ||
Revision as of 15:28, 12 October 2011
//during reconstruction: //compute dE/dx separately for fdc & cdc (reject 1 of the materials if significantly fewer hits than the other) (reject largest hits of each (separately)) //compute the means & sigmas for each separately //combine the dE/dx's using bragg additivity (calculate the weights!) //calculate the uncertainty on the combined dE/dx (transformation of errors) //calculate the average combined dE/dx (use bragg additivity, with the individual means) //calculate the chisq //weight = L1*rho1/A1 OVER sum(Ln*rhon/An): # scattering sites (with Na's canceled) //to find means & chisq's (for fdc & cdc separately): //tree: beta, x, and dE/dx
