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pi+pi- analysis with event mixing [message #12586]

Tue, 30 August 2011 10:39

Elisa Fioravanti
Messages: 84
Registered: January 2008

continuous participant

From: *fe.infn.it

Hello everybody,

I have analyzed pi+pi- with event mixing today. The results are not so good and understandable. I attach here the pi+pi- invariant mass distribution after all the selection criteria on 100.000 generated events.
We expect to see a peak at 3.1 GeV.

index.php?t=getfile&id=6602&private=0

Attachment: invmasschicutbest.png
(Size: 11.02KB, Downloaded 1315 times)

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Re: pi+pi- analysis with event mixing [message #12602 is a reply to message #12586]

Fri, 02 September 2011 11:33

Elisa Fioravanti
Messages: 84
Registered: January 2008

continuous participant

From: *fe.infn.it

Hello everybody,

I have run the event mixing data available on the GRID for the STT for the pbarp->pi+pi- analysis.
I have collected the plots into a pdf file that you can find in attachment.

For the pbarp->2(pi+pi-) I have still some not good results. I attach the invariant mass of the four pions.
index.php?t=getfile&id=6617&private=0

Cheers,
Elisa

Attachment: invamass_chicut_best.png
(Size: 11.17KB, Downloaded 1074 times)
Attachment: Mixing.pdf
(Size: 440.72KB, Downloaded 468 times)

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