HFT pointing resolution

Updated on Fri, 2011-09-02 08:51. Originally created by bouchet on 2011-04-03 09:34.

Comparison of the pointing resolution for THICK and THIN configuration.

I used MuDst files from :

thick : /home/yfzhang/hft/upgr15/cd1/thick/StEvent/
thin : /home/yfzhang/hft/upgr15/cd1/thin/StEvent/
both have the following particles embedded : 20 D0, 30 Ds /evt with power-law pt, 30 Lc /evt with flat pt (fz) + hijing event

first pass : here

second pass : here : in these slides I used a double gaus fit instead of fitSlices, to get the pointing resolution.

It takes into account in a better way the tails seen in the DCA distibution

some informations about the upgr15 geometry : radius, thickness, hit errors for PIXEL,IST and beam pipe : here
toy model : use the definition of the pointing resolution + full MCS definition : here

Comparison of the pointing resolution for THICK/THIN geometry with the hand calculations by J. Thomas

(note : the hand calculation DO not have the log term in the MCS)

Comparison of the pointing resolution for THICK/THIN geometry with the hand calculations by J. Thomas (with corrected curves)

Some answers for CD23 homework (done for THIN configuration)

Groups: