[Pvdis] Version2 update for e+e-/ C3q proposal

[Xiaochao Zheng]

Dear e+ program and SoLID supporters:

Many thanks to those who signed up for the C3q proposal (since v1), those who provided proofreading, and those who did further calculations on tracking and DAQ deadtime.  We are now within one-week of submission (though maybe one decade of having the positron beam on SoLID).

I have posted an updated version (now #2) at
https://drive.google.com/file/d/1Uy7NrlHGzfYyoYYyYTJwg_syYhF55cXl/view?usp=sharing

A summary of changes is given below:

1) rewrote e+ source sections 3.1 and 3.2. (shortened but nothing was moved to the appendix);

2) added tracking and DAQ deadtime, section 3.8 (thanks to Hanjie and Weizhi for the calculations and/or measurements);

3) add target endcap calculation, section 3.9.3 -- it was nice to deal with some more "ordinary" systematic effects;

4) added section 4.1 to outline the analysis procedure;

5) provided table on F3gammaZ uncertainties assuming 1% uncertainty on the calculation of QED contribution. Estimation using 5% and 10% QED uncertainty was also done (but not provided as tables so as not to crowd the section);

6) in Appendix A, under Eq.(55), clarified we are deriving for pure states (h=+1 or -1), then apply the result to real beams with polarizations. Without this, many people may be confused "where did the lambda^2 term go?".


Further more, the following is already on my to-do list. I am waiting for inputs to accommodate the change prior to submission (May 24th):
-- remake Fig.11.

Once again, please be critical and send me comments and suggestions.

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Please also feel free to forward this to anyone who may be interested in the physics, or simply point them to this author signup form<https://docs.google.com/forms/d/e/1FAIpQLSepw_fyz1u4E_t5k5HRKuY2gS-NOzA6tOzaDypR-8jc3HRAMA/viewform>.

Best regards,

Xiaochao
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