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<title>PamCut: TrkNucleiZCut Class Reference</title> |
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<div class="contents"> |
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<h1>TrkNucleiZCut Class Reference</h1><!-- doxytag: class="TrkNucleiZCut" --><!-- doxytag: inherits="PamCut" -->The TrkNuclei charge cut. |
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<a href="#_details">More...</a> |
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<p> |
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<code>#include <<a class="el" href="TrkNucleiZCut_8h_source.html">TrkNucleiZCut.h</a>></code> |
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<p> |
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<div class="dynheader"> |
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Inheritance diagram for TrkNucleiZCut:</div> |
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<div class="dynsection"> |
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<p><center><img src="classTrkNucleiZCut.png" usemap="#TrkNucleiZCut_map" border="0" alt=""></center> |
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<map name="TrkNucleiZCut_map"> |
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<area href="classPamCut.html" alt="PamCut" shape="rect" coords="0,0,94,24"> |
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</map> |
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</div> |
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<p> |
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<a href="classTrkNucleiZCut-members.html">List of all members.</a><table border="0" cellpadding="0" cellspacing="0"> |
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<tr><td></td></tr> |
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<tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr> |
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<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classTrkNucleiZCut.html#7cd05774c5dbdfee3350cdd6f0c24dda">TrkNucleiZCut</a> (const char *cutName, unsigned int Z, float lowerLimit, float upperLimit, unsigned int minLayers=1, unsigned int howToCheck=TRKNUCLEIZ_CHECKMEAN, unsigned int method=TRKNUCLEIZ_RIG)</td></tr> |
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Constructor. <a href="#7cd05774c5dbdfee3350cdd6f0c24dda"></a><br></td></tr> |
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<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="598ac3f78edc0b6add6a3959a5cd3db5"></a><!-- doxytag: member="TrkNucleiZCut::~TrkNucleiZCut" ref="598ac3f78edc0b6add6a3959a5cd3db5" args="()" --> |
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</td><td class="memItemRight" valign="bottom"><a class="el" href="classTrkNucleiZCut.html#598ac3f78edc0b6add6a3959a5cd3db5">~TrkNucleiZCut</a> ()</td></tr> |
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Destructor. <br></td></tr> |
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<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classTrkNucleiZCut.html#de47cb3c368d7ab12a8a5236de8915a4">Check</a> (PamLevel2 *event)</td></tr> |
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<tr><td class="mdescLeft"> </td><td class="mdescRight">The TrkNucleiZ check. <a href="#de47cb3c368d7ab12a8a5236de8915a4"></a><br></td></tr> |
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</table> |
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<hr><a name="_details"></a><h2>Detailed Description</h2> |
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The TrkNuclei charge cut. |
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<p> |
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This cut uses the TrkNuclei library to cut events depending on particle's charge value. <hr><h2>Constructor & Destructor Documentation</h2> |
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<a class="anchor" name="7cd05774c5dbdfee3350cdd6f0c24dda"></a><!-- doxytag: member="TrkNucleiZCut::TrkNucleiZCut" ref="7cd05774c5dbdfee3350cdd6f0c24dda" args="(const char *cutName, unsigned int Z, float lowerLimit, float upperLimit, unsigned int minLayers=1, unsigned int howToCheck=TRKNUCLEIZ_CHECKMEAN, unsigned int method=TRKNUCLEIZ_RIG)" --> |
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<div class="memitem"> |
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<div class="memproto"> |
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<table class="memname"> |
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<tr> |
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<td class="memname">TrkNucleiZCut::TrkNucleiZCut </td> |
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<td>(</td> |
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<td class="paramtype">const char * </td> |
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<td class="paramname"> <em>cutName</em>, </td> |
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</tr> |
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<tr> |
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<td class="paramkey"></td> |
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<td></td> |
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<td class="paramtype">unsigned int </td> |
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<td class="paramname"> <em>Z</em>, </td> |
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<td class="paramkey"></td> |
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<td></td> |
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<td class="paramtype">float </td> |
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<td class="paramname"> <em>lowerLimit</em>, </td> |
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<td class="paramkey"></td> |
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<td></td> |
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<td class="paramtype">float </td> |
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<td class="paramname"> <em>upperLimit</em>, </td> |
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<td class="paramkey"></td> |
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<td></td> |
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<td class="paramtype">unsigned int </td> |
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<td class="paramname"> <em>minLayers</em> = <code>1</code>, </td> |
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<td class="paramkey"></td> |
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<td></td> |
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<td class="paramtype">unsigned int </td> |
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<td class="paramname"> <em>howToCheck</em> = <code>TRKNUCLEIZ_CHECKMEAN</code>, </td> |
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</tr> |
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<td class="paramkey"></td> |
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<td></td> |
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<td class="paramtype">unsigned int </td> |
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<td class="paramname"> <em>method</em> = <code>TRKNUCLEIZ_RIG</code></td><td> </td> |
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</tr> |
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<tr> |
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<td></td> |
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<td>)</td> |
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<td></td><td></td><td><code> [inline]</code></td> |
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</tr> |
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</table> |
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</div> |
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<div class="memdoc"> |
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<p> |
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Constructor. |
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<p> |
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The charge to look for is passed to the <a class="el" href="classTrkNucleiZCut.html" title="The TrkNuclei charge cut.">TrkNucleiZCut</a> object as Z. For each charge, there is an associated distribution of events, with mean Zmean and standard deviation sigmaZ. These values will be used to check the events.<p> |
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<dl compact><dt><b>Parameters:</b></dt><dd> |
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<table border="0" cellspacing="2" cellpadding="0"> |
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<tr><td valign="top"></td><td valign="top"><em>cutName</em> </td><td>The cut's name. </td></tr> |
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<tr><td valign="top"></td><td valign="top"><em>Z</em> </td><td>The charge value. </td></tr> |
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<tr><td valign="top"></td><td valign="top"><em>lowerLimit</em> </td><td>The lower bound (in units of sigma_Z) of the desired charge range, defined as Zmean - lowerBound*sigmaZ. </td></tr> |
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<tr><td valign="top"></td><td valign="top"><em>upperLimit</em> </td><td>The upper bound (in units of sigma_Z) of the desired charge range, defined as Zmean + upperBound*sigmaZ. </td></tr> |
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<tr><td valign="top"></td><td valign="top"><em>minLayers</em> </td><td>The minimum required number of layers which give a valid charge information. </td></tr> |
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<tr><td valign="top"></td><td valign="top"><em>howToCheck</em> </td><td>Flag to set the check by mean release or by release in single planes (see <a class="el" href="TrkNucleiZCut_8h.html#4c885aa7c0e17adf9a7903317a2b4234">TrkNucleiZ_Check</a>). </td></tr> |
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<tr><td valign="top"></td><td valign="top"><em>method</em> </td><td>The method to use to measure the particle's charge (see <a class="el" href="TrkNucleiZCut_8h.html#26b0e4535fb2372057e0cc53b865b5a8">TrkNucleiZ_method</a>). </td></tr> |
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</table> |
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</dl> |
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<dl class="return" compact><dt><b>Returns:</b></dt><dd></dd></dl> |
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</div> |
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</div><p> |
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<hr><h2>Member Function Documentation</h2> |
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<a class="anchor" name="de47cb3c368d7ab12a8a5236de8915a4"></a><!-- doxytag: member="TrkNucleiZCut::Check" ref="de47cb3c368d7ab12a8a5236de8915a4" args="(PamLevel2 *event)" --> |
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<table class="memname"> |
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<td class="memname">int TrkNucleiZCut::Check </td> |
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<td>(</td> |
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<td class="paramtype">PamLevel2 * </td> |
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<td class="paramname"> <em>event</em> </td> |
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<td> ) </td> |
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<td><code> [virtual]</code></td> |
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</tr> |
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</table> |
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</div> |
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<div class="memdoc"> |
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<p> |
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The TrkNucleiZ check. |
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<p> |
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The routine selects events whose value of Zmean obtained from the TrkNuclei Class is in the range [Zmean - sigma*lowerBound, Zmean + sigma*upperBound]. Zmean and sigma are defined respectively as the mean and the standard deviation of the charge distributions obtained using TrkNuclei. In current implementation, calibrations for Z=1 and Z=2 for mean dE/dx Vs. rigidity are:<p> |
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Z=1 | mean sigma ------------------------ | 0.992 0.06<p> |
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Z=2 | mean sigma ------------------------ | 1.99 0.1<p> |
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For all other cases (Z>2 or single plane releases or dE/dx Vs. beta), means are taken to be equal to the charge value (Zmean = Z) and sigmas are:<p> |
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Z | sigma ----------- 1 | 0.09 2 | 0.10 3 | 0.17 4 | 0.34 5 | 0.44 6 | 0.59<p> |
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The TofNuclei calibrations used are the standard ones (from Wolfgang, see TrkNuclei.cpp). First of all, the number of layers giving a valid charge information is checked to be greater than minLayers; if it's not so, the routine will return <a class="el" href="TrkNucleiZCut_8h.html#3e78e6ef9e0abc656efc51a034b06b41e5e83b509d3047083352c35e145af4aa" title="Discarded because charge can be measured in too few layers.">TRKNUCLEIZ_TOOFEWLAYERS</a>. Next, it will check if the charge obtained considering the mean dE/dx in the tracker's layers is in the validity range if the constructor's flag howToCheckMean was set to TRKNUCLEIZ_CHECKMEAN; otherwise, it will check each single valid charge value (mean for X and Y views) obtained from each layer. In the latter case, it will return <a class="el" href="CommonDefs_8h.html#c857f4b76ae431837cbf61fd74863b6c" title="The implementations of PamCut::Check() must return this value if the event satisfy...">CUTOK</a> only if all valid layers (ie., those tagged as good for both X and Y in traccker level 2 routines) give a charge inside the bounds, regardless of the value of minLayers.<p> |
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<dl compact><dt><b>Parameters:</b></dt><dd> |
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<table border="0" cellspacing="2" cellpadding="0"> |
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<tr><td valign="top"></td><td valign="top"><em>event</em> </td><td>The event to analyze. </td></tr> |
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</table> |
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</dl> |
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<dl class="return" compact><dt><b>Returns:</b></dt><dd><a class="el" href="CommonDefs_8h.html#c857f4b76ae431837cbf61fd74863b6c" title="The implementations of PamCut::Check() must return this value if the event satisfy...">CUTOK</a> if the charge from mean dE/dx(if howToCheck == <a class="el" href="TrkNucleiZCut_8h.html#4c885aa7c0e17adf9a7903317a2b4234aa7d5140e9c1973b2461970838f072fd" title="Check the mean value.">TRKNUCLEIZ_CHECKMEAN</a>) or all the single layer charges (if howToCheck == <a class="el" href="TrkNucleiZCut_8h.html#4c885aa7c0e17adf9a7903317a2b4234a9bc9846d177843d2ec717c4333c90a2" title="Check each single charge from each layer.">TRKNUCLEIZ_CHECKSINGLEVALUES</a>) obtained from TrkNuclei are in the range [Z - sigma*lowerBound, Z + sigma*upperBound]. <p> |
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<a class="el" href="TrkNucleiZCut_8h.html#3e78e6ef9e0abc656efc51a034b06b416dc17ce6156ddda7c99352e6e162ddbe" title="Discarded because charge is out of bounds.">TRKNUCLEIZ_OUTOFBOUNDS</a> if the charge from mean dE/dx(if howToCheck == <a class="el" href="TrkNucleiZCut_8h.html#4c885aa7c0e17adf9a7903317a2b4234aa7d5140e9c1973b2461970838f072fd" title="Check the mean value.">TRKNUCLEIZ_CHECKMEAN</a>) or at least one valid single layer charge (if howToCheck == <a class="el" href="TrkNucleiZCut_8h.html#4c885aa7c0e17adf9a7903317a2b4234a9bc9846d177843d2ec717c4333c90a2" title="Check each single charge from each layer.">TRKNUCLEIZ_CHECKSINGLEVALUES</a>) is out of bounds. <p> |
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<a class="el" href="TrkNucleiZCut_8h.html#3e78e6ef9e0abc656efc51a034b06b41e5e83b509d3047083352c35e145af4aa" title="Discarded because charge can be measured in too few layers.">TRKNUCLEIZ_TOOFEWLAYERS</a> if charge information is available for a number of layers lesser than minLayers. <p> |
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<a class="el" href="TrkNucleiZCut_8h.html#3e78e6ef9e0abc656efc51a034b06b416dc17ce6156ddda7c99352e6e162ddbe" title="Discarded because charge is out of bounds.">TRKNUCLEIZ_OUTOFBOUNDS</a> if Z < 1 or Z > 6. </dd></dl> |
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|
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<p>Implements <a class="el" href="classPamCut.html#a874600461950d1f2b75ce3938f91cbe">PamCut</a>.</p> |
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</div> |
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</div><p> |
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<hr>The documentation for this class was generated from the following files:<ul> |
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<li>TrkCuts/TrkNucleiZCut/<a class="el" href="TrkNucleiZCut_8h_source.html">TrkNucleiZCut.h</a><li>TrkCuts/TrkNucleiZCut/<a class="el" href="TrkNucleiZCut_8cpp.html">TrkNucleiZCut.cpp</a></ul> |
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</div> |
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<hr size="1"><address style="text-align: right;"><small>Generated on Fri Jun 5 15:09:08 2009 for PamCut by |
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<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.9 </small></address> |
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