[Clas12_verystrange] PAC request

Johann Goetz jgoetz at ucla.edu
Thu Jun 21 20:06:01 EDT 2012


Maybe we could also plot the momentum distributions of the kaons and pions
in the final state -- I believe most of the tracks are lower momentum where
kaon/pion ID is unambiguous but I am not 100% sure about this.

On Wed, Jun 20, 2012 at 7:06 PM, Lei Guo <lguo at jlab.org> wrote:

> The presentation went quite well, as I gathered from various people's
> reactions. We did get one request, hopefully the last, from the PAC.
> Michael, Derek and I have formed a plan (as described below), using the
> already generated pythia gamma p-->p+anything events. I checked with the
> PAC reader Diego and he is fine with our plan. Please let us know if you
> have any other suggestions.
>
> Lei
>
> Begin forwarded message:
>
> *From: *Diego Bettoni <bettoni at fe.infn.it>
> *Date: *June 20, 2012 9:30:28 PM EDT
> *To: *Lei Guo <lguo at jlab.org>
> *Subject: **Re: response attached (PR12-12-008)*
>
> Hi Lei, yes this is fine. If you could get us something by tomorrow I
> think it would be great.
> regards, diego
>
> On 21/06/2012 00:59, Lei Guo wrote:
>
> Hi, Diego,
>
>
> I've talked with my colleague and we will evaluate this for the 4K
>
> (K+K+K- plus pi-pi+ forming a K0)channel in Omega- measurement. We will
>
> concentrate on pythia background events where multiple pions are present
>
> and can contribute to our background, if their momenta are high enough
>
> that clas PID would start to fail. Do you think this would be
>
> sufficient? We should have some of the results tomorrow, or the latest
>
> on Friday morning unless there is some unforseen problems.
>
>
> Please let us know if our plan would satisfy the PAC.
>
>
> THanks a lot!
>
>
> Lei
>
> On Jun 20, 2012, at 6:19 PM, Diego Bettoni wrote:
>
>
> Dear Lei,
>
> I have a request from the PAC: we would like to see a background
>
> evaluation with a more realistic pion and kaon identification (i.e.
>
> taking into account the PID inefficiencies). Do you think that you
>
> could produce this for at least one channel in the next day or so ?
>
> Thank you very much
>
> diego
>
>
>
>
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>


-- 
Johann T. Goetz, PhD. <http://sites.google.com/site/theodoregoetz/>
jgoetz at ucla.edu
Nefkens Group, UCLA Dept. of Physics & Astronomy
Hall-B, Jefferson Lab, Newport News, VA
Office: 757-269-5465 (CEBAF Center F-335)
Mobile: 757-768-9999
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