Difference between revisions of "March 22nd, 2019"

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Attended:
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Attended: Moskov, Justin, Mikhail, Sean, Jim, and Igor
  
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The total cross section for KLp-->K+Xi0 and impact for Sigma(2030)7/2+ [] and Sigma(1950)5/2-[]
+
Tentative agenda:
 +
 
 +
- Revision of the PAC46 proposal to resubmit it for PAC47
 +
 
 +
- GlueX Collaboration’s endorsement. There is an endorsement letter signed by key people of experimental groups of the GlueX Collaboration [https://wiki.jlab.org/klproject/images/5/52/KLF_Support_Letter3.pdf]
 +
* [http://www.gluex.org/GlueX/Bylaws.html Definition of GlueX Collaboration endorsement from bylaws]
 +
* Timeline for PAC47 approval within GlueX
 +
** April 1: Proposal proponents request an internal review for endorsement
 +
** April 8: Draft proposal submitted to internal review committee with charge from CB
 +
** May 15:    Internal review committee responds to charge, then CB and EG decide if proposal will be put up for a vote (at Collaboration Meeting)
 +
** May 27:    Initiate vote for proposal endorsement (2 weeks for vote)
 +
** June 10:  PAC47 proposal deadline
 +
* For the April 8th deadline we plan to address the comments from the previous (PAC46) report:
 +
** Effects of systematic uncertainties on our results
 +
** Lack of awareness of competition in the international community, and impact this has on scheduling
 +
** The proponents should describe the physics impact (for example, how will new baryon states test lattice QCD?), including effects of systematic errors on partial wave analyses.
 +
** Demonstrate that systematic errors are under control, given the very small systematic errors expected, including energy resolution and acceptance at low -t.
 +
 
 +
- New calculations for KLP-->K+Xi0
 +
 
 +
- News for the flux monitor
 +
 
 +
- News for the Be-production target
 +
 
 +
- News for CPS
 +
 
 +
- News for the recent GlueX run with the Be-target
 +
 
 +
- Schedule for KLF meetings
 +
 
 +
 
 +
The total cross section for KLp-->K+Xi0 and impact for Sigma(2030)7/2+ [https://wiki.jlab.org/klproject/images/c/ce/72%2B.png] and Sigma(1950)5/2-[https://wiki.jlab.org/klproject/images/0/00/52-.png]. Differential cross section at W = 1940 MeV to compare 100 and 20 day run period [https://wiki.jlab.org/klproject/images/7/79/DSG.png].  Similar for pol measurements [https://wiki.jlab.org/klproject/images/f/f3/Pol.png].
 +
 
 +
 
 +
Sigma(1920)5/2-  new
 +
         
 +
100d    M = 1.923+-0.010+-0.010 GeV      G = 0.321+-0.010+-0.010 GeV 
 +
 
 +
20d    M = 1.977+-0.021+-0.025 GeV      G = 0.327+-0.025+-0.025 GeV 
 +
 
 +
PDG2018 M = 1.775+-0.005    GeV      G = 0.120+-0.015    GeV
 +
 
 +
LQCD    M = 1.212 GeV
 +
            M = 1.487 GeV
 +
            M = 1.590 GeV
 +
            M = 1.663 GeV
 +
 
 +
 
 +
Sigma(2030)7/2+  ****
 +
 
 +
100d    M = 1.930+-0.020+-0.030 GeV  G = 0.400+-0.040 GeV 
 +
 
 +
  20d  M = 1.981+-0.030+-0.030 GeV  G = 0.350+-0.080 GeV 
 +
 
 +
PDG2018 M =  2.030+-0.008      GeV  G = 0.180+-0.025 GeV
 +
 
 +
LQCD    M =  1.606 GeV
 +
            M = 1.620 GeV
 +
            M = 1.670 GeV
 +
            M = 1.678 GeV 
 +
 
 +
LQCD: R. G. Edwards et al. [Hadron Spectrum Collaboration],  Phys. Rev. D 87, no. 5, 054506 (2013)

Latest revision as of 07:34, 25 March 2019

Attended: Moskov, Justin, Mikhail, Sean, Jim, and Igor

Tentative agenda:

- Revision of the PAC46 proposal to resubmit it for PAC47

- GlueX Collaboration’s endorsement. There is an endorsement letter signed by key people of experimental groups of the GlueX Collaboration [1]

  • Definition of GlueX Collaboration endorsement from bylaws
  • Timeline for PAC47 approval within GlueX
    • April 1: Proposal proponents request an internal review for endorsement
    • April 8: Draft proposal submitted to internal review committee with charge from CB
    • May 15: Internal review committee responds to charge, then CB and EG decide if proposal will be put up for a vote (at Collaboration Meeting)
    • May 27: Initiate vote for proposal endorsement (2 weeks for vote)
    • June 10: PAC47 proposal deadline
  • For the April 8th deadline we plan to address the comments from the previous (PAC46) report:
    • Effects of systematic uncertainties on our results
    • Lack of awareness of competition in the international community, and impact this has on scheduling
    • The proponents should describe the physics impact (for example, how will new baryon states test lattice QCD?), including effects of systematic errors on partial wave analyses.
    • Demonstrate that systematic errors are under control, given the very small systematic errors expected, including energy resolution and acceptance at low -t.

- New calculations for KLP-->K+Xi0

- News for the flux monitor

- News for the Be-production target

- News for CPS

- News for the recent GlueX run with the Be-target

- Schedule for KLF meetings


The total cross section for KLp-->K+Xi0 and impact for Sigma(2030)7/2+ [2] and Sigma(1950)5/2-[3]. Differential cross section at W = 1940 MeV to compare 100 and 20 day run period [4]. Similar for pol measurements [5].


Sigma(1920)5/2- new

100d M = 1.923+-0.010+-0.010 GeV G = 0.321+-0.010+-0.010 GeV 

20d    M = 1.977+-0.021+-0.025 GeV      G = 0.327+-0.025+-0.025 GeV

PDG2018 M = 1.775+-0.005 GeV G = 0.120+-0.015 GeV

LQCD M = 1.212 GeV 

           M = 1.487 GeV 
           M = 1.590 GeV
           M = 1.663 GeV


Sigma(2030)7/2+ ****

100d M = 1.930+-0.020+-0.030 GeV G = 0.400+-0.040 GeV 

 20d   M = 1.981+-0.030+-0.030 GeV   G = 0.350+-0.080 GeV

PDG2018 M = 2.030+-0.008 GeV G = 0.180+-0.025 GeV

LQCD M = 1.606 GeV 

           M = 1.620 GeV 
           M = 1.670 GeV
           M = 1.678 GeV

LQCD: R. G. Edwards et al. [Hadron Spectrum Collaboration], Phys. Rev. D 87, no. 5, 054506 (2013)

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