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<h1>TrkCuts/TrkChi2QualCut/TrkChi2QualCut.cpp</h1><a href="TrkChi2QualCut_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span> |
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<a name="l00002"></a>00002 <span class="comment"> * TrkChi2QualCut.cpp</span> |
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<a name="l00003"></a>00003 <span class="comment"> *</span> |
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<a name="l00004"></a>00004 <span class="comment"> * Created on: 13-mar-2009</span> |
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<a name="l00005"></a>00005 <span class="comment"> * Author: Sergio Ricciarini, Nicola Mori</span> |
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<a name="l00006"></a>00006 <span class="comment"> */</span> |
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<a name="l00007"></a>00007 |
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<a name="l00010"></a>00010 <span class="preprocessor">#include "<a class="code" href="TrkChi2QualCut_8h.html">TrkChi2QualCut.h</a>"</span> |
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<a name="l00011"></a>00011 |
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<a name="l00012"></a><a class="code" href="classTrkChi2QualCut.html#b3f014b4575ab61bee63ccf991e91e18">00012</a> <span class="keywordtype">int</span> <a class="code" href="classTrkChi2QualCut.html#b3f014b4575ab61bee63ccf991e91e18" title="The tracker chi2 quality check.">TrkChi2QualCut::Check</a>(PamLevel2 *event) { |
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<a name="l00013"></a>00013 |
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<a name="l00014"></a>00014 TrkTrack *trkTrack = <span class="keyword">event</span>->GetTrack(0)->GetTrkTrack(); |
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<a name="l00015"></a>00015 |
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<a name="l00016"></a>00016 <span class="keywordtype">float</span> p0 = 1.111588e+00; |
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<a name="l00017"></a>00017 <span class="keywordtype">float</span> p1 = 1.707656e+00; |
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<a name="l00018"></a>00018 <span class="keywordtype">float</span> p2 = 1.489693e-01; |
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<a name="l00019"></a>00019 <span class="keywordtype">float</span> def_0 = 0.07; |
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<a name="l00020"></a>00020 <span class="keywordtype">float</span> chi2m025_0 = p0 + fabs(def_0) * p1 + def_0 * def_0 * p2; |
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<a name="l00021"></a>00021 |
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<a name="l00022"></a>00022 <span class="keywordtype">float</span> chi2m025 = p0 + fabs(trkTrack->GetDeflection()) * p1 + pow(trkTrack->GetDeflection(), 2) * p2; |
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<a name="l00023"></a>00023 |
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<a name="l00024"></a>00024 <span class="keywordtype">float</span> chi2m = pow(chi2m025 - chi2m025_0 + pow(6.4, 0.25), 4.); <span class="comment">// cut at ~90% of chi^2 distribution</span> |
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<a name="l00025"></a>00025 |
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<a name="l00026"></a>00026 <span class="keywordflow">if</span> (!(trkTrack->chi2 < chi2m)) |
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<a name="l00027"></a>00027 <span class="keywordflow">return</span> 0; |
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<a name="l00028"></a>00028 <span class="keywordflow">return</span> <a class="code" href="CommonDefs_8h.html#c857f4b76ae431837cbf61fd74863b6c" title="The implementations of PamCut::Check() must return this value if the event satisfy...">CUTOK</a>; |
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<a name="l00029"></a>00029 |
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<a name="l00030"></a>00030 } |
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</pre></div></div> |
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