1 | <html>
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2 | <head>
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3 | <meta HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
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4 | <meta NAME="keywords" CONTENT="root, tree, ntuple, format, description">
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5 | <title>root tree description</title>
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6 | </head>
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7 | <body>
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8 | <H1>root tree description</H1>
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9 | <hr>
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10 | <H2>Branches</H2>
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11 | <hr>
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12 | <table style="border: 1px dotted;" align="center" border="0" cellpadding="7" cellspacing="3" widt="95%">
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13 | <tr><td><b>Branch</b></td>
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14 | <td><b>Definition</b></td>
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15 | <td><b>Class</b></td></tr>
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16 | <tr bgcolor="#eeeeee">
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17 | <td>Event</td>
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18 | <td>generated event from LHEF
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19 | </td>
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20 | <td><a href="#ExRootLHEFEvent">ExRootLHEFEvent</a></td>
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21 | </tr>
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22 | <tr bgcolor="#ffffff">
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23 | <td>Particle</td>
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24 | <td>generated partons from LHEF
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25 | </td>
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26 | <td><a href="#ExRootLHEFParticle">ExRootLHEFParticle</a></td>
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27 | </tr>
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28 | <tr bgcolor="#eeeeee">
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29 | <td>Event</td>
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30 | <td>information about generated event</td>
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31 | <td><a href="#ExRootGenEvent">ExRootGenEvent</a></td>
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32 | </tr>
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33 | <tr bgcolor="#ffffff">
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34 | <td>GenParticle</td>
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35 | <td>generated particles from HEPEVT</td>
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36 | <td><a href="#ExRootGenParticle">ExRootGenParticle</a></td>
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37 | </tr>
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38 | <tr bgcolor="#eeeeee">
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39 | <td>Event</td>
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40 | <td>information about reconstructed event
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41 | </td>
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42 | <td><a href="#ExRootEvent">ExRootEvent</a></td>
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43 | </tr>
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44 | <tr bgcolor="#ffffff">
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45 | <td>Photon</td>
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46 | <td>reconstructed photons
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47 | </td>
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48 | <td><a href="#ExRootPhoton">ExRootPhoton</a></td>
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49 | </tr>
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50 | <tr bgcolor="#eeeeee">
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51 | <td>Electron</td>
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52 | <td>reconstructed electrons
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53 | </td>
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54 | <td><a href="#ExRootElectron">ExRootElectron</a></td>
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55 | </tr>
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56 | <tr bgcolor="#ffffff">
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57 | <td>Muon</td>
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58 | <td>reconstructed muons
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59 | </td>
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60 | <td><a href="#ExRootMuon">ExRootMuon</a></td>
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61 | </tr>
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62 | <tr bgcolor="#eeeeee">
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63 | <td>Tau</td>
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64 | <td>reconstructed hadronically-decaying tau leptons
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65 | </td>
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66 | <td><a href="#ExRootTau">ExRootTau</a></td>
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67 | </tr>
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68 | <tr bgcolor="#ffffff">
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69 | <td>Jet</td>
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70 | <td>reconstructed jets
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71 | </td>
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72 | <td><a href="#ExRootJet">ExRootJet</a></td>
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73 | </tr>
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74 | <tr bgcolor="#eeeeee">
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75 | <td>MissingET</td>
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76 | <td>missing transverse energy
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77 | </td>
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78 | <td><a href="#ExRootMissingET">ExRootMissingET</a></td>
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79 | </tr>
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80 | </table>
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81 | <hr>
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82 | <H2>Classes</H2>
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83 | <hr>
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84 | <table style="border: 1px dotted;" align="center" border="0" cellpadding="7" cellspacing="3" widt="95%">
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85 | <tr><td><b>Parameter</b></td>
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86 | <td><b>Definition</b></td>
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87 | <td><b>How it was calculated</b></td></tr>
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88 | <tr bgcolor="#ffffff"><td colspan=3><hr><a name="ExRootLHEFEvent"><H3>ExRootLHEFEvent</H3><hr></td></tr>
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89 | <tr bgcolor="#ffffff">
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90 | <td>Number</td>
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91 | <td>event number
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92 | </td>
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93 | <td></td>
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94 | </tr>
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95 | <tr bgcolor="#eeeeee">
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96 | <td>Nparticles</td>
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97 | <td>number of particles in the event </td>
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98 | <td> hepup.NUP
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99 | </td>
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100 | </tr>
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101 | <tr bgcolor="#ffffff">
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102 | <td>ProcessID</td>
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103 | <td>subprocess code for the event </td>
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104 | <td> hepup.IDPRUP
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105 | </td>
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106 | </tr>
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107 | <tr bgcolor="#eeeeee">
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108 | <td>Weight</td>
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109 | <td>weight for the event </td>
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110 | <td> hepup.XWGTUP
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111 | </td>
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112 | </tr>
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113 | <tr bgcolor="#ffffff">
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114 | <td>ScalePDF</td>
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115 | <td>scale in GeV used in the calculation of the PDFs in the event </td>
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116 | <td> hepup.SCALUP
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117 | </td>
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118 | </tr>
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119 | <tr bgcolor="#eeeeee">
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120 | <td>CouplingQED</td>
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121 | <td>value of the QED coupling used in the event </td>
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122 | <td> hepup.AQEDUP
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123 | </td>
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124 | </tr>
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125 | <tr bgcolor="#ffffff">
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126 | <td>CouplingQCD</td>
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127 | <td>value of the QCD coupling used in the event </td>
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128 | <td> hepup.AQCDUP
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129 | </td>
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130 | </tr>
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131 | <tr bgcolor="#ffffff"><td colspan=3><hr><a name="ExRootLHEFParticle"><H3>ExRootLHEFParticle</H3><hr></td></tr>
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132 | <tr bgcolor="#ffffff">
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133 | <td>PID</td>
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134 | <td>particle HEP ID number </td>
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135 | <td> hepup.IDUP[number]
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136 | </td>
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137 | </tr>
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138 | <tr bgcolor="#eeeeee">
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139 | <td>Status</td>
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140 | <td>particle status code </td>
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141 | <td> hepup.ISTUP[number]
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142 | </td>
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143 | </tr>
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144 | <tr bgcolor="#ffffff">
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145 | <td>Mother1</td>
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146 | <td>index for the particle first mother </td>
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147 | <td> hepup.MOTHUP[number][0]
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148 | </td>
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149 | </tr>
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150 | <tr bgcolor="#eeeeee">
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151 | <td>Mother2</td>
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152 | <td>index for the particle last mother </td>
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153 | <td> hepup.MOTHUP[number][1]
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154 | </td>
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155 | </tr>
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156 | <tr bgcolor="#ffffff">
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157 | <td>ColorLine1</td>
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158 | <td>index for the particle color-line </td>
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159 | <td> hepup.ICOLUP[number][0]
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160 | </td>
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161 | </tr>
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162 | <tr bgcolor="#eeeeee">
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163 | <td>ColorLine2</td>
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164 | <td>index for the particle anti-color-line </td>
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165 | <td> hepup.ICOLUP[number][1]
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166 | </td>
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167 | </tr>
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168 | <tr bgcolor="#ffffff">
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169 | <td>Px</td>
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170 | <td>particle momentum vector (x component) </td>
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171 | <td> hepup.PUP[number][0]
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172 | </td>
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173 | </tr>
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174 | <tr bgcolor="#eeeeee">
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175 | <td>Py</td>
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176 | <td>particle momentum vector (y component) </td>
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177 | <td> hepup.PUP[number][1]
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178 | </td>
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179 | </tr>
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180 | <tr bgcolor="#ffffff">
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181 | <td>Pz</td>
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182 | <td>particle momentum vector (z component) </td>
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183 | <td> hepup.PUP[number][2]
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184 | </td>
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185 | </tr>
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186 | <tr bgcolor="#eeeeee">
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187 | <td>E</td>
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188 | <td>particle energy </td>
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189 | <td> hepup.PUP[number][3]
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190 | </td>
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191 | </tr>
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192 | <tr bgcolor="#ffffff">
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193 | <td>M</td>
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194 | <td>particle mass </td>
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195 | <td> hepup.PUP[number][4]
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196 | </td>
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197 | </tr>
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198 | <tr bgcolor="#eeeeee">
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199 | <td>PT</td>
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200 | <td>particle transverse momentum
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201 | </td>
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202 | <td></td>
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203 | </tr>
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204 | <tr bgcolor="#ffffff">
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205 | <td>Eta</td>
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206 | <td>particle pseudorapidity
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207 | </td>
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208 | <td></td>
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209 | </tr>
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210 | <tr bgcolor="#eeeeee">
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211 | <td>Phi</td>
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212 | <td>particle azimuthal angle
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213 | </td>
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214 | <td></td>
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215 | </tr>
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216 | <tr bgcolor="#ffffff">
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217 | <td>Rapidity</td>
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218 | <td>particle rapidity
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219 | </td>
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220 | <td></td>
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221 | </tr>
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222 | <tr bgcolor="#eeeeee">
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223 | <td>LifeTime</td>
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224 | <td>particle invariant lifetime
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225 | (c*tau, distance from production to decay in mm)
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226 | </td>
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227 | <td> hepup.VTIMUP[number]
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228 | </td>
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229 | </tr>
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230 | <tr bgcolor="#ffffff">
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231 | <td>Spin</td>
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232 | <td>cosine of the angle between the particle spin vector
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233 | and the decaying particle 3-momentum,
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234 | specified in the lab frame. </td>
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235 | <td> hepup.SPINUP[number]
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236 | </td>
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237 | </tr>
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238 | <tr bgcolor="#ffffff"><td colspan=3><hr><a name="ExRootGenEvent"><H3>ExRootGenEvent</H3><hr></td></tr>
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239 | <tr bgcolor="#ffffff">
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240 | <td>Number</td>
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241 | <td>event number </td>
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242 | <td> hepevt.nevhep
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243 | </td>
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244 | </tr>
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245 | <tr bgcolor="#ffffff"><td colspan=3><hr><a name="ExRootGenParticle"><H3>ExRootGenParticle</H3><hr></td></tr>
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246 | <tr bgcolor="#ffffff">
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247 | <td>PID</td>
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248 | <td>particle HEP ID number </td>
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249 | <td> hepevt.idhep[number]
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250 | </td>
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251 | </tr>
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252 | <tr bgcolor="#eeeeee">
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253 | <td>Status</td>
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254 | <td>particle status </td>
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255 | <td> hepevt.isthep[number]
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256 | </td>
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257 | </tr>
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258 | <tr bgcolor="#ffffff">
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259 | <td>M1</td>
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260 | <td>particle 1st mother </td>
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261 | <td> hepevt.jmohep[number][0] - 1
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262 | </td>
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263 | </tr>
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264 | <tr bgcolor="#eeeeee">
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265 | <td>M2</td>
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266 | <td>particle 2nd mother </td>
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267 | <td> hepevt.jmohep[number][1] - 1
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268 | </td>
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269 | </tr>
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270 | <tr bgcolor="#ffffff">
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271 | <td>D1</td>
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272 | <td>particle 1st daughter </td>
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273 | <td> hepevt.jdahep[number][0] - 1
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274 | </td>
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275 | </tr>
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276 | <tr bgcolor="#eeeeee">
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277 | <td>D2</td>
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278 | <td>particle 2nd daughter </td>
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279 | <td> hepevt.jdahep[number][1] - 1
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280 | </td>
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281 | </tr>
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282 | <tr bgcolor="#ffffff">
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283 | <td>E</td>
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284 | <td>particle energy </td>
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285 | <td> hepevt.phep[number][3]
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286 | </td>
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287 | </tr>
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288 | <tr bgcolor="#eeeeee">
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289 | <td>Px</td>
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290 | <td>particle momentum vector (x component) </td>
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291 | <td> hepevt.phep[number][0]
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292 | </td>
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293 | </tr>
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294 | <tr bgcolor="#ffffff">
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295 | <td>Py</td>
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296 | <td>particle momentum vector (y component) </td>
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297 | <td> hepevt.phep[number][1]
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298 | </td>
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299 | </tr>
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300 | <tr bgcolor="#eeeeee">
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301 | <td>Pz</td>
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302 | <td>particle momentum vector (z component) </td>
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303 | <td> hepevt.phep[number][2]
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304 | </td>
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305 | </tr>
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306 | <tr bgcolor="#ffffff">
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307 | <td>PT</td>
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308 | <td>particle transverse momentum
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309 | </td>
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310 | <td></td>
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311 | </tr>
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312 | <tr bgcolor="#eeeeee">
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313 | <td>Eta</td>
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314 | <td>particle pseudorapidity
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315 | </td>
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316 | <td></td>
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317 | </tr>
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318 | <tr bgcolor="#ffffff">
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319 | <td>Phi</td>
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320 | <td>particle azimuthal angle
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321 | </td>
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322 | <td></td>
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323 | </tr>
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324 | <tr bgcolor="#eeeeee">
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325 | <td>Rapidity</td>
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326 | <td>particle rapidity
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327 | </td>
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328 | <td></td>
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329 | </tr>
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330 | <tr bgcolor="#ffffff">
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331 | <td>T</td>
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332 | <td>particle vertex position (t component) </td>
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333 | <td> hepevt.vhep[number][3]
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334 | </td>
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335 | </tr>
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336 | <tr bgcolor="#eeeeee">
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337 | <td>X</td>
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338 | <td>particle vertex position (x component) </td>
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339 | <td> hepevt.vhep[number][0]
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340 | </td>
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341 | </tr>
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342 | <tr bgcolor="#ffffff">
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343 | <td>Y</td>
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344 | <td>particle vertex position (y component) </td>
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345 | <td> hepevt.vhep[number][1]
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346 | </td>
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347 | </tr>
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348 | <tr bgcolor="#eeeeee">
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349 | <td>Z</td>
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350 | <td>particle vertex position (z component) </td>
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351 | <td> hepevt.vhep[number][2]
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352 | </td>
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353 | </tr>
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354 | <tr bgcolor="#ffffff"><td colspan=3><hr><a name="ExRootGenJet"><H3>ExRootGenJet</H3><hr></td></tr>
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355 | <tr bgcolor="#ffffff">
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356 | <td>E</td>
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357 | <td>jet energy
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358 | </td>
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359 | <td></td>
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360 | </tr>
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361 | <tr bgcolor="#eeeeee">
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362 | <td>Px</td>
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363 | <td>jet momentum vector (x component)
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364 | </td>
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365 | <td></td>
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366 | </tr>
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367 | <tr bgcolor="#ffffff">
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368 | <td>Py</td>
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369 | <td>jet momentum vector (y component)
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370 | </td>
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371 | <td></td>
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372 | </tr>
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373 | <tr bgcolor="#eeeeee">
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374 | <td>Pz</td>
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375 | <td>jet momentum vector (z component)
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376 | </td>
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377 | <td></td>
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378 | </tr>
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379 | <tr bgcolor="#ffffff">
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380 | <td>PT</td>
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381 | <td>jet transverse momentum
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382 | </td>
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383 | <td></td>
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384 | </tr>
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385 | <tr bgcolor="#eeeeee">
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386 | <td>Eta</td>
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387 | <td>jet pseudorapidity
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388 | </td>
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389 | <td></td>
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390 | </tr>
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391 | <tr bgcolor="#ffffff">
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392 | <td>Phi</td>
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393 | <td>jet azimuthal angle
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394 | </td>
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395 | <td></td>
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396 | </tr>
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397 | <tr bgcolor="#eeeeee">
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398 | <td>Rapidity</td>
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399 | <td>jet rapidity
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400 | </td>
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401 | <td></td>
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402 | </tr>
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403 | <tr bgcolor="#ffffff">
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404 | <td>Mass</td>
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405 | <td>jet invariant mass
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406 | </td>
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407 | <td></td>
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408 | </tr>
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409 | <tr bgcolor="#ffffff"><td colspan=3><hr><a name="ExRootEvent"><H3>ExRootEvent</H3><hr></td></tr>
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410 | <tr bgcolor="#ffffff">
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411 | <td>Number</td>
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412 | <td>event number
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413 | </td>
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414 | <td></td>
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415 | </tr>
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416 | <tr bgcolor="#eeeeee">
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417 | <td>Trigger</td>
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418 | <td>trigger word
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419 | </td>
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420 | <td></td>
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421 | </tr>
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422 | <tr bgcolor="#ffffff"><td colspan=3><hr><a name="ExRootMissingET"><H3>ExRootMissingET</H3><hr></td></tr>
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423 | <tr bgcolor="#ffffff">
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424 | <td>MET</td>
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425 | <td>mising transverse energy
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426 | </td>
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427 | <td></td>
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428 | </tr>
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429 | <tr bgcolor="#eeeeee">
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430 | <td>Phi</td>
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431 | <td>mising energy azimuthal angle
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432 | </td>
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433 | <td></td>
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434 | </tr>
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435 | <tr bgcolor="#ffffff"><td colspan=3><hr><a name="ExRootPhoton"><H3>ExRootPhoton</H3><hr></td></tr>
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436 | <tr bgcolor="#ffffff">
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437 | <td>PT</td>
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438 | <td>photon transverse momentum
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439 | </td>
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440 | <td></td>
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441 | </tr>
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442 | <tr bgcolor="#eeeeee">
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443 | <td>Eta</td>
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444 | <td>photon pseudorapidity
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445 | </td>
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446 | <td></td>
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447 | </tr>
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448 | <tr bgcolor="#ffffff">
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449 | <td>Phi</td>
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450 | <td>photon azimuthal angle
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451 | </td>
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452 | <td></td>
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453 | </tr>
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454 | <tr bgcolor="#eeeeee">
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455 | <td>EhadOverEem</td>
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456 | <td>ratio of the hadronic versus electromagnetic energy
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457 | deposited in the calorimeter
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458 | </td>
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459 | <td></td>
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460 | </tr>
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461 | <tr bgcolor="#ffffff"><td colspan=3><hr><a name="ExRootElectron"><H3>ExRootElectron</H3><hr></td></tr>
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462 | <tr bgcolor="#ffffff">
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463 | <td>PT</td>
|
---|
464 | <td>electron transverse momentum
|
---|
465 | </td>
|
---|
466 | <td></td>
|
---|
467 | </tr>
|
---|
468 | <tr bgcolor="#eeeeee">
|
---|
469 | <td>Eta</td>
|
---|
470 | <td>electron pseudorapidity
|
---|
471 | </td>
|
---|
472 | <td></td>
|
---|
473 | </tr>
|
---|
474 | <tr bgcolor="#ffffff">
|
---|
475 | <td>Phi</td>
|
---|
476 | <td>electron azimuthal angle
|
---|
477 | </td>
|
---|
478 | <td></td>
|
---|
479 | </tr>
|
---|
480 | <tr bgcolor="#eeeeee">
|
---|
481 | <td>Charge</td>
|
---|
482 | <td>electron charge
|
---|
483 | </td>
|
---|
484 | <td></td>
|
---|
485 | </tr>
|
---|
486 | <tr bgcolor="#ffffff">
|
---|
487 | <td>Ntrk</td>
|
---|
488 | <td>number of tracks associated with the electron
|
---|
489 | </td>
|
---|
490 | <td></td>
|
---|
491 | </tr>
|
---|
492 | <tr bgcolor="#eeeeee">
|
---|
493 | <td>EhadOverEem</td>
|
---|
494 | <td>ratio of the hadronic versus electromagnetic energy
|
---|
495 | deposited in the calorimeter
|
---|
496 | </td>
|
---|
497 | <td></td>
|
---|
498 | </tr>
|
---|
499 | <tr bgcolor="#ffffff"><td colspan=3><hr><a name="ExRootMuon"><H3>ExRootMuon</H3><hr></td></tr>
|
---|
500 | <tr bgcolor="#ffffff">
|
---|
501 | <td>PT</td>
|
---|
502 | <td>muon transverse momentum
|
---|
503 | </td>
|
---|
504 | <td></td>
|
---|
505 | </tr>
|
---|
506 | <tr bgcolor="#eeeeee">
|
---|
507 | <td>Eta</td>
|
---|
508 | <td>muon pseudorapidity
|
---|
509 | </td>
|
---|
510 | <td></td>
|
---|
511 | </tr>
|
---|
512 | <tr bgcolor="#ffffff">
|
---|
513 | <td>Phi</td>
|
---|
514 | <td>muon azimuthal angle
|
---|
515 | </td>
|
---|
516 | <td></td>
|
---|
517 | </tr>
|
---|
518 | <tr bgcolor="#eeeeee">
|
---|
519 | <td>Charge</td>
|
---|
520 | <td>muon charge
|
---|
521 | </td>
|
---|
522 | <td></td>
|
---|
523 | </tr>
|
---|
524 | <tr bgcolor="#ffffff">
|
---|
525 | <td>Ntrk</td>
|
---|
526 | <td>number of tracks associated with the muon
|
---|
527 | </td>
|
---|
528 | <td></td>
|
---|
529 | </tr>
|
---|
530 | <tr bgcolor="#eeeeee">
|
---|
531 | <td>PTiso</td>
|
---|
532 | <td>sum of tracks transverse momentum within a cone of radius R=0.4
|
---|
533 | centered on the muon (excluding the muon itself)
|
---|
534 | </td>
|
---|
535 | <td></td>
|
---|
536 | </tr>
|
---|
537 | <tr bgcolor="#ffffff">
|
---|
538 | <td>ETiso</td>
|
---|
539 | <td>ratio of ET in a 3x3 calorimeter cells array around the muon
|
---|
540 | (including the muon's cell) to the muon PT
|
---|
541 | </td>
|
---|
542 | <td></td>
|
---|
543 | </tr>
|
---|
544 | <tr bgcolor="#eeeeee">
|
---|
545 | <td>JetIndex</td>
|
---|
546 | <td>index of the closest jet
|
---|
547 | </td>
|
---|
548 | <td></td>
|
---|
549 | </tr>
|
---|
550 | <tr bgcolor="#ffffff"><td colspan=3><hr><a name="ExRootTau"><H3>ExRootTau</H3><hr></td></tr>
|
---|
551 | <tr bgcolor="#ffffff">
|
---|
552 | <td>PT</td>
|
---|
553 | <td>tau transverse momentum
|
---|
554 | </td>
|
---|
555 | <td></td>
|
---|
556 | </tr>
|
---|
557 | <tr bgcolor="#eeeeee">
|
---|
558 | <td>Eta</td>
|
---|
559 | <td>tau pseudorapidity
|
---|
560 | </td>
|
---|
561 | <td></td>
|
---|
562 | </tr>
|
---|
563 | <tr bgcolor="#ffffff">
|
---|
564 | <td>Phi</td>
|
---|
565 | <td>tau azimuthal angle
|
---|
566 | </td>
|
---|
567 | <td></td>
|
---|
568 | </tr>
|
---|
569 | <tr bgcolor="#eeeeee">
|
---|
570 | <td>Charge</td>
|
---|
571 | <td>tau charge
|
---|
572 | </td>
|
---|
573 | <td></td>
|
---|
574 | </tr>
|
---|
575 | <tr bgcolor="#ffffff">
|
---|
576 | <td>Ntrk</td>
|
---|
577 | <td>number of charged tracks associated with the tau
|
---|
578 | </td>
|
---|
579 | <td></td>
|
---|
580 | </tr>
|
---|
581 | <tr bgcolor="#eeeeee">
|
---|
582 | <td>EhadOverEem</td>
|
---|
583 | <td>ratio of the hadronic versus electromagnetic energy
|
---|
584 | deposited in the calorimeter
|
---|
585 | </td>
|
---|
586 | <td></td>
|
---|
587 | </tr>
|
---|
588 | <tr bgcolor="#ffffff"><td colspan=3><hr><a name="ExRootJet"><H3>ExRootJet</H3><hr></td></tr>
|
---|
589 | <tr bgcolor="#ffffff">
|
---|
590 | <td>PT</td>
|
---|
591 | <td>jet transverse momentum
|
---|
592 | </td>
|
---|
593 | <td></td>
|
---|
594 | </tr>
|
---|
595 | <tr bgcolor="#eeeeee">
|
---|
596 | <td>Eta</td>
|
---|
597 | <td>jet pseudorapidity
|
---|
598 | </td>
|
---|
599 | <td></td>
|
---|
600 | </tr>
|
---|
601 | <tr bgcolor="#ffffff">
|
---|
602 | <td>Phi</td>
|
---|
603 | <td>jet azimuthal angle
|
---|
604 | </td>
|
---|
605 | <td></td>
|
---|
606 | </tr>
|
---|
607 | <tr bgcolor="#eeeeee">
|
---|
608 | <td>Mass</td>
|
---|
609 | <td>jet invariant mass
|
---|
610 | </td>
|
---|
611 | <td></td>
|
---|
612 | </tr>
|
---|
613 | <tr bgcolor="#ffffff">
|
---|
614 | <td>Ntrk</td>
|
---|
615 | <td>number of tracks associated with the jet
|
---|
616 | </td>
|
---|
617 | <td></td>
|
---|
618 | </tr>
|
---|
619 | <tr bgcolor="#eeeeee">
|
---|
620 | <td>BTag</td>
|
---|
621 | <td>1 or 2 for a jet that has been tagged as containing a heavy quark
|
---|
622 | </td>
|
---|
623 | <td></td>
|
---|
624 | </tr>
|
---|
625 | <tr bgcolor="#ffffff">
|
---|
626 | <td>EhadOverEem</td>
|
---|
627 | <td>ratio of the hadronic versus electromagnetic energy
|
---|
628 | deposited in the calorimeter
|
---|
629 | </td>
|
---|
630 | <td></td>
|
---|
631 | </tr>
|
---|
632 | <tr bgcolor="#eeeeee">
|
---|
633 | <td>Index</td>
|
---|
634 | <td>jet index in the LHC Olympics file
|
---|
635 | </td>
|
---|
636 | <td></td>
|
---|
637 | </tr>
|
---|
638 | </table>
|
---|
639 | </body></html>
|
---|