[Clas12_verystrange] PAC40 comments response, please read

Igor Strakovsky igor at va.gwu.edu
Wed Jun 12 09:57:54 EDT 2013


Mike,

That is the theoretical plot and I sent Vitali's clarification to Lei
and Eugene

Here you are...

The Dalitz plot is constructed in terms of (K+ \Omega) vs (K0 \Omega )
   variables. However the amplitude (see Fig.10) is not symmetric relative
   to the permutation of the K0 and K+ final states due to isospin and
   charge conservation. Therefore the resonance contribution is only seen
   in one band. For a fully symmetric amplitude  one could expect two-band
   structure as shown in Fig.13. Such a symmetric amplitude should include
   isospin 3/2 \Sigma resonances in the intermediate state.   Hence  the
   Dalitz plot might be very useful to disentangle various production
   mechanism and to understand the reaction dynamics.

   Note the reaction mechanism can be more complicated then depicted in
   Fig.10. More realistic  calculation should also take the  CLAS
   acceptance in to  account.

On Wed, 12 Jun 2013 09:52:24 -0400 (EDT), Michael Dugger <dugger at jlab.org> 
wrote:

> 
> Igor,
> 
> On page 25 of the proposal there is Fig. 12 that shows "phase space only" 
>distributions and Fig. 13 that shows the "fully symmetric" reaction. The 
>right panel of Fig. 12 has a vertical band at about 5.5 that is also seen in 
>Fig. 13. The vertical band for Fig. 12 does not extend as much as for Fig. 
>13.
> 
> We tried to understand the distributions during the meeting yesterday but we 
>did not find the definition of "p_b" in the proposal.
> 
> Also, I do not know what "fully symmetric" means.
> 
> In short, we do not understand the figures because we don't know what p_b 
>is, and that means we don't know how to reply to the comment.
> 
> We just need a bit of clarification.
> 
> Take care,
> Michael
> 
> On Wed, 12 Jun 2013, Igor Strakovsky wrote:
> 
>> Me too and I do not know what Lei is asking me for
>>
>> On Wed, 12 Jun 2013 09:29:00 -0400 (EDT), Michael Dugger <dugger at jlab.org> 
>>wrote:
>>
>>> 
>>> Hi,
>>> 
>>> The response to 9 and 10 seem OK to me.
>>> 
>>> Take care,
>>> Michael
>>> 
>>> On Tue, 11 Jun 2013, Lei Guo wrote:
>>> 
>>>> Hi, All,
>>>> 
>>>> I compiled a response to PAC40 comments. Please check and let me know
>>>> if you think it should be modified.
>>>> Under svn, please check out PAC40Comment.pdf or PAC40Comment.docx
>>>> 
>>>> Specifically, we are missing an answer to question 6, which Igor
>>>> promised that he will do it tonight.
>>>> Also, I felt the answer to question 9 and10 might not be adequate.
>>>> Maybe Mike can take a look at it?
>>>> 
>>>> Cheers!
>>>> 
>>>> Lei
>>>> **************************************
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>>>>         \   |             Physics Dept., CP
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>>>> 
>>>> 
>>>> 
>>>> 
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>>
>> Igor Strakovsky, SAID CNS The George Washington University
>> Tel: 703-726-8344(NV),202-994-4742(FB),Skype: igors1945_2
>> Fax: 202-994-3001(FB),Emails: igor at va.gwu.edu, igor at jlab.org
>>

Igor Strakovsky, SAID CNS The George Washington University
Tel: 703-726-8344(NV),202-994-4742(FB),Skype: igors1945_2
Fax: 202-994-3001(FB),Emails: igor at va.gwu.edu, igor at jlab.org



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