caleb
/
TTTT


			
				
					
						
						
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<title>TTTT Analysis: TTTT Production Cross-Section Measurement</title>
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   <div id="projectname">TTTT Analysis
   &#160;<span id="projectnumber">0.1</span>
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<div class="title">TTTT Production Cross-Section Measurement </div>  </div>
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<div class="textblock"><p>This project contains the code, documentation, and results of the TTTT production cross-section measurment in the tri-lepton channel.</p>
<p>To run this analysis, first aquire relevant MC files for signal(TTTT), and main backgrounds(TTW, TTZ, TT). These should be in the "Minitree" format. Then checkout the <a href="https://github.com/cfangmeier/TTTT">code</a> from Github. After acquiring the code, follow the standard cmake build process of</p>
<div class="fragment"><div class="line">cd project_directory</div><div class="line">mkdir build</div><div class="line">cd build</div><div class="line">cmake ..</div><div class="line">make</div></div><!-- fragment --><p>Once the code has been built, there should be a <code>main</code> executable in the build directory. Call it with the syntax</p>
<div class="fragment"><div class="line">./main -f path_to_minitree_file</div></div><!-- fragment --><p>This will create a results <code>ROOT</code> file containing a set of histograms extracted from the Minitree. Create one of these for each input Minitree. The results are then usually processed in Jupyter Notebooks to produce final plots/measurements. For example, a basic listing of generated histograms can be found <a href="./TTTT_Analysis.html">here</a></p>
<p>A brief rundown of the general analysis framework, FilVal, can be found <a href="./md__home_caleb_Sources_TTTT_AboutFilVal.html">here</a>.</p>
<h1>References </h1>
<ul>
<li><b>Four Tops for LHC</b> (<a href="https://arxiv.org/abs/1611.05032v1">arXiv</a>) <br />
 A theory paper outlining a general strategy for measuring tttt cross-section using the SS-dilepton and trilepton channels</li>
<li><b>Efficient Identification of Boosted Semileptonic Top Quarks at the LHC</b> (<a href="https://arxiv.org/abs/1007.2221">arXiv</a>) <br />
 Detailed description of the "mini-iso" requirement.</li>
<li><b>Top-tagging: A Method for Identifying Boosted Hadronic Tops</b> (<a href="https://arxiv.org/abs/0806.0848">arXiv</a>) <br />
 Description of how to identify hadronically decaying Tops. ie. t-&gt;b + W(-&gt;q + {q}) </li>
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