Hydrogen runs transversity

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Revision as of 01:43, 3 November 2008 by Xqian (Talk | contribs) (New page: *Select Electron from BigBite (1st pass) Image:Electron pid1.gif Cut on the preshower BB.ts.ps.e>400 Image:Electron pid3.gif We could cut on the vertex z to exclude the electro...)

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  • Select Electron from BigBite (1st pass)

Electron pid1.gif

Cut on the preshower BB.ts.ps.e>400

Electron pid3.gif

We could cut on the vertex z to exclude the electron from the target windows. abs(BB.tr.vz)<0.18

Electron pid2.gif

The formula is p_elastic = (1.231*0.938)/(0.938+1.231*(1-BB.tr.pz/BB.tr.p))

halog entry

We could also cut on the expected momentum to select the elastic electrons.