[G14_run] DNP meeting contributed talk

Tue Jul 1 20:31:54 EDT 2014

Dear Peng,

Whois is your adviser?  FX?  I am in Trento now and will talk to Volker
and Dave in several hours.

Igor

On Tue, 01 Jul 2014 20:23:05 -0400, "Igor Strakovsky" <igor at va.gwu.edu> wrote:

> Dear Peng,
> 
> You HAVE NO NEUTRON DATA !!  There quasi-neutron or deuteron data!!!
> 
> Igor
> 
> On Tue, 1 Jul 2014 17:31:27 -0400, Peng Peng <pp9e at virginia.edu> wrote:
> 
>> Dear Colleagues,
>> 
>> I have made some changes base on the suggestions of Igor and Tsuneo, the new 
>>version is as follows. 
>> -title-
>> Polarization observables for double charged pion photo-production with 
>>polarized HD target
>> -/title-
>> 
>> -abstract-
>> A complete characterization of the spectrum of N* and Delta resonances for 
>>nucleon is essential to understand the internal structure of the nucleon. 
>>However, both the recent Lattice QCD calculation and the conventional 
>>Constitute Quark Model have predicted more resonances than experimentally 
>>observed. In order to identify the missing resonances using partial wave 
>>analysis, polarization observables are needed to be measured in experiment. 
>>The work presented in this talk is to analyze the polarization observables 
>>for double charged pion photo-production with polarized HD target(G14 
>>experiment in Jlab). With circularly polarized beam, and longitudinal 
>>polarized target(one free proton, one bound proton and one bound neutron), 
>>three polarization observables in the double pion photo-production are 
>>measured. The proton data will be compared with an earlier Jlab experiment 
>>G9, and the new neutron data will also be presented.
>> -/abstract-
>> 
>> Cheers,
>> Peng
>> On Jun 27, 2014, at 12:46 PM, Peng Peng <pp9e at virginia.edu> wrote:
>> 
>>> Dear Colleagues,
>>> 
>>> I would like to give a contributed talk in the DNP meeting this Fall. 
>>>Following is the abstract, your comments will be greatly appreciated.
>>> 
>>> -title-
>>>   Polarization observables for double charged pion photo-production with 
>>>polarized HD target
>>> -/title-
>>> 
>>> -abstract-
>>>   A complete characterization of spectrum of N* and Delta resonances for 
>>>nucleon is essential to understand the internal structure of the nucleon. 
>>>However both the recent Lattice QCD and the conventional Constitute Quark 
>>>Model have predicted more resonances than experimentally observed. Most of 
>>>these missing resonances lie above 1.8 GeV with broad line-shapes and they 
>>>overlap with their neighboring states. To distinguish the overlapping states 
>>>requires efforts from both experimentalists and theorists. On the experiment 
>>>side, measuring the polarization observables for all the decay channels will 
>>>help to remove the ambiguities in deterring the multipoles in partial wave 
>>>analysis. On the theory side, using more realistic pion mass in Lattice QCD 
>>>calculation and adding the new measured data in the phenomenological models 
>>>will provide us a more accurate model. The joint efforts from both the theory 
>>>and the experiment will deepen our understanding in the confinement region of 
>>>QCD. The work presented in this talk is to analyze the polarization 
>>>observables for double charged pion photo-production with polarized HD 
>>>target. This experiment with the name G14 was conducted in Hall B in 
>>>Jefferson Lab from November 2011 to May 2012. Both circularly and linearly 
>>>polarized beam with high polarization were used in G14, and the polarized HD 
>>>has both longitudinal polarized protons and neutrons. The center of mass 
>>>energy ranges from 1.4GeV to 2.2GeV for circularly polarized beam, and ranges 
>>>from 1.6GeV to 2.2GeV for linearly polarized beam. Many final states channels 
>>>were produced in this experiment, such as single pion, double pion and Kaon 
>>>Lambda, etc. This talk will present the three polarization observables in the 
>>>double pion photo-production with both longitudinal polarized proton and 
>>>neutron target and circularly polarized beam. An earlier experiment in Hall B 
>>>JLab, G9a,  has given the results for this process with polarized proton 
>>>target. The new results from G14 will be compared with the G9 results for 
>>>proton target, and the new neutron data will also be presented.      
>>> -/abstract-
>>> 
>>> Cheers,
>>> Peng
>>> 
>>> On Jun 27, 2014, at 12:00 PM, g14_run-request at jlab.org wrote:
>>> 
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>>>> 
>>>> Today's Topics:
>>>> 
>>>>   1. g14 group meeting on 27June2014, 9:00am (Charles Hanretty)
>>>> 
>>>> 
>>>> ----------------------------------------------------------------------
>>>> 
>>>> Message: 1
>>>> Date: Thu, 26 Jun 2014 12:06:06 -0400
>>>> From: Charles Hanretty <charleshanretty at gmail.com>
>>>> Subject: [G14_run] g14 group meeting on 27June2014, 9:00am
>>>> To: g14_run at jlab.org
>>>> Message-ID:
>>>> 	<CAL9AGi9S=LdHYioiqZ-_UhwA86=iDRxJWKfqTCOG=XR0v25dSQ at mail.gmail.com>
>>>> Content-Type: text/plain; charset="utf-8"
>>>> 
>>>> Dear Collaborators,
>>>> 
>>>> Our next group meeting is scheduled for tomorrow, Friday, June 27th,
>>>> at 9:00am in room A-110.
>>>> 
>>>>           (instructions for off-site participants below)
>>>> 
>>>> Agenda:
>>>> * pass1 cooking
>>>> * ongoing analyses
>>>> * other items
>>>> 
>>>> (see http://clasweb.jlab.org/rungroups/g14/wiki/index.php/June_27,_2014 )
>>>> 
>>>> Please update the agenda as required.
>>>> 
>>>> ==========================================================
>>>> Instructions for offsite participants:
>>>> * Dial Toll-Free Number: 866-740-1260 (U.S.& Canada)
>>>>    o International participants dial: Toll Number: 303-248-0285
>>>>    o Or International Toll-Free Number:http://www.readytalk.com/intl
>>>> * Enter 7-digit access code, 2877656 followed by #
>>>> ==========================================================
>>>> 
>>>> 
>>>> -- 
>>>> Cheers,
>>>> Charles Hanretty
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>>>> 
>>>> End of G14_run Digest, Vol 33, Issue 9
>>>> **************************************
>>> 
>> 
> 
> 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