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Test of muon momentum resolution with Jan14 release
https://forum.gsi.de/index.phpindex.php?t=rview&goto=15866&th=4112#msg_15866
I have checked the momentum resolution of muon for two angles with the new release (p = 1GeV/c, theta = 15deg and theta = 60 deg).
the result at Barrel region is normal, deltap/p = 1.56%, comparable to the result from TDR.
But, for the Forward region, I found deltap/p = 2.1%, very different from the TDR result which is about 1.5%.
Then, I also checked them with the apr13 release, both of them seem correct.
Has anyone some idea, why the momentum resolution in forward between apr13 and jan14 changes a lot?
Binsong ]]>binsong2014-02-12T16:54:22-00:00Re: Test of muon momentum resolution with Jan14 release
https://forum.gsi.de/index.phpindex.php?t=rview&goto=15873&th=4112#msg_15873
I've downloaded the jan14 release and I simulated two sets of 1000 events with a momentum of 1 GeV/c; one set was generated at theta = 15 deg and the other one at theta = 60 deg.
For both data sets, I obtain nearly the same resolution: 1.60% at 15 deg and 1.62% at 60 deg, as shown in the plot attached.
So I don't see any difference with respect to the TDR results.
Are you using the macros in the macro/run directory?
Cheers,
Susanna]]>Susanna Costanza2014-02-17T10:17:43-00:00Re: Test of muon momentum resolution with Jan14 release
https://forum.gsi.de/index.phpindex.php?t=rview&goto=15874&th=4112#msg_15874
Thanks for your answer. The revision I used is 23659, external package is dec13, and the macro in macro/run.
But the result for 15deg is different with yours.
My delta p / p is 2.2%.
Cheers
]]>binsong2014-02-17T12:32:14-00:00Re: Test of muon momentum resolution with Jan14 release
https://forum.gsi.de/index.phpindex.php?t=rview&goto=15875&th=4112#msg_15875
I'll install the dec13 release and I'll let you know if/how my results change.
Susanna]]>Susanna Costanza2014-02-17T12:43:21-00:00Re: Test of muon momentum resolution with Jan14 release
https://forum.gsi.de/index.phpindex.php?t=rview&goto=15878&th=4112#msg_15878
why are you using dec13? It was never announced since it has bugs inside, in this case geane is not working properly.
Please try again with apr13 externals.]]>StefanoSpataro2014-02-17T15:29:38-00:00