[Clas_cascades] Fwd: Lambda1520 meeting note

[Igor Strakovsky]

Dear Zhiwen,

Let me clarify - I am asking for MM^2(Ks) = (p_gamma + p_target - p_Ks)^2

Thanks, Igor

On Fri, 29 Oct 2010 11:11:11 -0400, "Igor Strakovsky" <igor at va.gwu.edu> wrote:

> Dear Zhiwen,
> 
> Do you have a problem to show me what I am asking and asking over months?
> 
> Thanks, Igor
> 
> On Fri, 29 Oct 2010 10:22:36 -0400, Zhiwen Zhao <zwzhao at jlab.org> wrote:
> 
>> Hi, Igor
>> 
>> I have shown the InvM of pi+pi- here
>> http://clasweb.jlab.org/rungroups/eg3/wiki/index.php/PrtK0Km_theta1540#M.28k0.29
>> 
>> Could you please explain to me what exactly do you mean by recoil Ks?
>> Thanks
>> 
>> Zhiwen
>> 
>> On 10/29/2010 08:08 AM, Igor Strakovsky wrote:
>>> Dear Zhiwen,
>>>
>>> I am confused - did I ask difficult questions? Both you and Ralf promised
>>> to show, in particular, a recoil Ks spectrum from your data.
>>>
>>> Thanks, Igor
>>>
>>>
>>> On Thu, 28 Oct 2010 12:42:59 -0400, Zhiwen Zhao <zwzhao at jlab.org> wrote:
>>>
>>>>
>>>>
>>>> -------- Original Message --------
>>>> Subject: Lambda1520 meeting note
>>>> Date: Tue, 26 Oct 2010 12:34:02 -0400
>>>> From: Zhiwen Zhao <zwzhao at jlab.org>
>>>> To: Zhiwen Zhao <zwzhao at jlab.org>
>>>> CC: Raffaella De Vita <Raffaella.Devita at ge.infn.it>, vpk at jlab.org,
>>>> Ralf W Gothe <gothe at physics.sc.edu>, b.mckinnon at physics.gla.ac.uk,
>>>> alexeyk at jlab.org
>>>>
>>>> Hi, folks
>>>>
>>>> Thanks all for a great meeting.
>>>>
>>>> Here is a brief summary and todo list
>>>> 1. Overall, g11 result is in good agreement with eg3 proton result for
>>>> differential and total cross section.
>>>> 2. cut or not cut away Phi have very small effect for both eg3 and g11,
>>>> while g11 only has pK+(K-) topology with access to Phi kinematicaly.
>>>> 3. for eg3, check totla cross section by only sum up differential cross
>>>> section instead of extrapolating and fitting
>>>> 4. for eg3, check fitting models (relativistic breit-wigner etc),
>>>> particular at higher t.
>>>> 5. for eg3, check simulation condition and study acceptance, particular
>>>> at small t
>>>> 6. for g11 and eg3, check low energy total cross section.
>>>> 7. for g11 and eg3, check decay angle distribution at different
>>>> t-channel K angle.
>>>> 8. communicate with ODU about their opinion on Phi. ( I will write to
>>>> Gagik)
>>>> 9. see what's update from g10
>>>> 10. communication with theorist about the calculation. ( Raffaella,
>>>> would you like to send the cross section result to Nam now or later? )
>>>> 11. finishing up analysis note and start the review and publication in
>>>> same pace.
>>>>
>>>> Please let me know what I missed.
>>>>
>>>> PS, in Nam's latest paper (Phys. Rev. C, 81(5):055206, May 2010), the
>>>> decay angle distribution has some mistakes on axis labels, the
>>>> attachment is the corrected version from him.
>>>>
>>>> Let's find a time and talk again during CLAS meeting in two weeks
>>>>
>>>> Thanks
>>>>
>>>> Zhiwen