[clas12_rgk] Isupov results: 2 gamma Invariant mass

[Viktor Mokeev]

Thank you Volker,


 Evgeny will prepare more detailed talk for the rg-k Meeting.


Best Regards,

                                  Victor

________________________________
From: clas12_rgk <clas12_rgk-bounces at jlab.org> on behalf of burkert <burkert at jlab.org>
Sent: Sunday, July 7, 2019 2:02:12 PM
To: clas12_rgk at jlab.org
Subject: Re: [clas12_rgk] Isupov results: 2 gamma Invariant mass

Hi all,
You may be able to increase the eta yield by allowing the 2-gammas in different sectors, otherwise the acceptance for eta's will be limited as they have much larger minimum opening angles than pi0's.

Volker

  On 7/7/19 1:57 PM, Viktor Mokeev wrote:

Dear Colleagues,


Evgeny Isupov repeated selection of gvp p--->pi^0p'---> gamma gamma p' events from the same data set and with the same selection criteria as FX did. His results for 2gamm inv masses are consistent with FX.


 Best Regards,

                                      Victor


________________________________
From: Evgeny Isupov <e.l.isupov at gmail.com><mailto:e.l.isupov at gmail.com>
Sent: Sunday, July 7, 2019 1:17 PM
To: Viktor Mokeev
Subject: 2 gamma Invariant mass

Hi Victor Ivanovich,

I used FX’s cuts and plotted 2 gamma invariant mass.
On the right you can see the same plot only in log scale,
we can clearly see the eta meson signal.


Evgeny Isupov





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