To all who've used MonteCarlo generated by Vitaly for the quasielastic
channels, when I generate my MonteCarlo Vector Asymmetries, I use the
following strings. Withholding judgments on definitions of cuts and other
strings, are the following strings correct? I'm almost positive that they
are... I just want verification. Vitaly, it would be great if you could
make a quick comment on these...
sprintf(branch,"bonn_GEN_%s_GMN_100_T",POLst[i]);
TString
lnc1(emptyStr+"sqrt(3./2.)*("+branch+".xs1+"+branch+".xs5-"+branch+".xs2-"+branch+".xs4)/("+branch+".xs1+"+branch+".xs2+"+branch+".xs3+"+branch+".xs4+"+branch+".xs5+"+branch+".xs6)");
// sqrt(3/2) [(xs1+xs5) - (xs2+xs4)]/SUM
TString
lnc2(emptyStr+"(3./2.)*("+branch+".xs1+"+branch+".xs5-"+branch+".xs2-"+branch+".xs4)**2/("+branch+".xs1+"+branch+".xs2+"+branch+".xs3+"+branch+".xs4+"+branch+".xs5+"+branch+".xs6)**2");
// 3/2 * [(xs1+xs5) - (xs2+xs4)]**2 / (SUM)**2
mc->Draw(lnc1+":pm>>"+hist1,cutstrL&&cutQ2[j]);
mc->Draw(lnc2+":pm>>"+hist2,cutstrL&&cutQ2[j]);
On 11/28/07, Michael Kohl <kohlm@mit.edu> wrote:
>
> Hi,
> this should be of interest for anyone evaluating asymmetries from BLAST:
>
> hPz
> ===
> 2004: hPz = 0.5796 +- 0.0034 stat. (=0.59%)
> 2005: hPz = 0.5149 +- 0.0043 stat. (=0.84%)
>
> uncorrelated, correlated and total systematic uncertainty:
> dhPz_sysunc dhPz_syscor dhPz_sys / rel.
> 2004: 0.0028 0.0019 0.0034 / 0.58%
> 2005: 0.0050 0.0019 0.0054 / 1.04%
>
>
> Pzz
> ===
> Chi's update from May 2006 based on v3_4_18 (2004) / v3_4_19 (2005):
> 2004: Pzz = 0.692 +- 0.015 stat. +- 0.037 sys. (0.040 total = 5.78%)
> 2005: Pzz = 0.554 +- 0.013 stat. +- 0.038 sys. (0.040 total = 7.22%)
>
>
> thd
> ===
> 2004: thd = <thd> +- 0.35 stat. +- 0.245 sys. (0.427 total)
> 2005: thd = <thd> +- 0.42 stat. +- 0.157 sys. (0.448 total)
>
> Here, <thd> is the event-weighted average of the respective spin angle map
> of 2004 or 2005 ("Doug's map") and needs to be determined for each
> reaction under conderation.
>
>
>
>
> Best regards
> Michael
>
>
>
> +-------------------------------------+--------------------------+
> | Office: | Home: |
> |-------------------------------------|--------------------------|
> | Dr. Michael Kohl | Michael Kohl |
> | Laboratory for Nuclear Science | 5 Ibbetson Street |
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> | Middleton, MA 01949 | U.S.A. |
> | U.S.A. | |
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> | http://blast.lns.mit.edu | |
> +-------------------------------------+--------------------------+
>
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