https://wiki.jlab.org/gpg/index.php?title=Special:NewPages&feed=atom&hideredirs=1&limit=50&offset=&namespace=0&username=&tagfilter=Gpg - New pages [en]2022-01-17T07:35:27ZFrom GpgMediaWiki 1.26.0https://wiki.jlab.org/gpg/index.php/Main_Page/elog:elog3Main Page/elog:elog32011-05-16T21:37:49Z<p>Gilfoyle: </p>
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<div>Starting collecting results for RC correction to ALTp. Since the correction appears to be significant and different and varies with phi for the polarized and unpolarized parts of the cross section, then I have to put in the correction on each separately. (1) The first step is to generate the 2D surfaces (functions of cos(theta) and phi) for polarized and unpolarized at many different Q2 values. The first plot below shows the surfaces for polarized RC correction for Q2=0.2 GeV2 (red) and Q2=0.5 GeV2 (blue). Mathematica notebooks for separate Q2 calculations are below fig 1.<br />
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[[File:e3f1.gif|400px|thumb|center| Fig 1. Comparison of 2.6r ALTp with radiative corrections on (blue) and off (red). ]]<br />
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[[File:e3f1.nb]]</div>Gilfoylehttps://wiki.jlab.org/gpg/index.php/Main_Page/elog:elog2Main Page/elog:elog22011-03-03T22:06:14Z<p>Gilfoyle: </p>
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<div>One of the expectations of the ALTp data is that is should go to zero at theta<sub>pq</sub>=0 or p<sub>m</sub>=0. The plots below shows this distribution for the 2.6n and 2.6r data sets.<br />
[[Image:lowpmdist26n.gif|400px|thumb|center| Fig. 1. Plot of ALTp for low pm for the 2.6n data.]]<br />
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[[Image:lowpmdist26r.gif|400px|thumb|center| Fig. 2. Plot of ALTp for low pm for the 2.6r data.]]<br />
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[[:Category:RootFile]]<br />
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[[:Category:MathFile]]</div>Gilfoylehttps://wiki.jlab.org/gpg/index.php/Main_Page/elog:elog1Main Page/elog:elog12011-02-26T04:14:21Z<p>Gilfoyle: </p>
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<div>Starting collecting results for RC correction to ALTp. Since the correction appears to be significant and different and varies with φ for the polarized and unpolarized parts of the cross section, then I have to put in the correction on each separately. (1) The first step is to generate the 2D surfaces (functions of cosθ and φ) for polarized and unpolarized at many different Q2 values. The first plot below shows the surfaces for polarized RC correction for Q2=0.2 GeV2 (red) and Q2=0.5 GeV2 (blue). Mathematica notebooks for separate Q2 calculations are below fig 1.<br />
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[[File:f1.gif|600px|thumb|center| Fig 1. Comparison of polarized RC at Q2=0.2 GeV2 (red) and Q2=0.5 GeV2 (blue).]]</div>Gilfoylehttps://wiki.jlab.org/gpg/index.php/Main_Page/elog/1:RCMain Page/elog/1:RC2011-02-26T03:37:28Z<p>Gilfoyle: </p>
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<div>Starting collecting results for RC correction to ALTp. Since the correction appears to be significant and different and varies with φ for the polarized and unpolarized parts of the cross section, then I have to put in the correction on each separately. (1) The first step is to generate the 2D surfaces (functions of cosθ and φ) for polarized and unpolarized at many different Q2 values. The first plot below shows the surfaces for polarized RC correction for Q2=0.2 GeV2 (red) and Q2=0.5 GeV2 (blue). Mathematica notebooks for separate Q2 calculations are below fig 1.<br />
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[[File:f1.gif|center|Fig 1. Comparison of polarized RC at Q2=0.2 GeV2 (red) and Q2=0.5 GeV2 (blue).]]</div>Gilfoyle