Difference between revisions of "Mattione DMCThrownProblem"

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(DMCThrown)
 
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* NOTE:
+
=== Generated Reaction ===
PID 4 = Neutrino
+
* &gamma; p &rarr; &eta;'<sub>1</sub>(2300), p
PID 5 = MuonPlus
+
** &eta;'<sub>1</sub>(2300) &rarr; K*(892)<sup>0</sup>, K<sup>0</sup>_bar
PID 8 = PiPlus
+
*** K*(892)<sup>0</sup> &rarr; K<sup>+</sup>, &pi;<sup>-</sup>
PID 9 = PiMinus
+
**** K<sup>0</sup>_bar &rarr; &pi;<sup>+</sup>, &pi;<sup>-</sup>
PID 11 = KPlus
+
PID 14 = Proton
+
PID 16 = KShort
+
  
* DMCThrown: (from hd_dump)
+
* NOTE: K<sup>0</sup>_bar is decayed by hdgeant rather than the generator!
 +
 
 +
=== DMCThrown ===
 +
 
 +
* PID Table:
 +
** PID 4 = Neutrino
 +
** PID 5 = MuonPlus
 +
** PID 8 = PiPlus
 +
** PID 9 = PiMinus
 +
** PID 11 = KPlus
 +
** PID 14 = Proton
 +
** PID 16 = KShort
 +
 
 +
DMCThrown contents (from hd_dump):
 
  PID:  q: x(cm): y(cm): z(cm): E(GeV): t(ns): p(GeV/c): theta(deg): phi(deg): type: pdgtype: myid: parentid: mech:
 
  PID:  q: x(cm): y(cm): z(cm): E(GeV): t(ns): p(GeV/c): theta(deg): phi(deg): type: pdgtype: myid: parentid: mech:
 
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   4  +0  -65.4    0.7  210.0  0.030  0.000    0.030      66.582    -7.517    4  121416    0        3    0
 
   4  +0  -65.4    0.7  210.0  0.030  0.000    0.030      66.582    -7.517    4  121416    0        3    0
  
 +
=== Discussion ===
 
* If a particle is decayed by hdgeant, then the value of "parentid" points to the "myid" that the particle came from.  For example, here the &pi;<sup>+</sup> and &pi;<sup>-</sup> are shown with parentid = 3, meaning they came from the K0.   
 
* If a particle is decayed by hdgeant, then the value of "parentid" points to the "myid" that the particle came from.  For example, here the &pi;<sup>+</sup> and &pi;<sup>-</sup> are shown with parentid = 3, meaning they came from the K0.   
  

Latest revision as of 19:13, 28 September 2012

Generated Reaction

  • γ p → η'1(2300), p
    • η'1(2300) → K*(892)0, K0_bar
      • K*(892)0 → K+, π-
        • K0_bar → π+, π-
  • NOTE: K0_bar is decayed by hdgeant rather than the generator!

DMCThrown

  • PID Table:
    • PID 4 = Neutrino
    • PID 5 = MuonPlus
    • PID 8 = PiPlus
    • PID 9 = PiMinus
    • PID 11 = KPlus
    • PID 14 = Proton
    • PID 16 = KShort

DMCThrown contents (from hd_dump):

PID:  q: x(cm): y(cm): z(cm): E(GeV): t(ns): p(GeV/c): theta(deg): phi(deg): type: pdgtype: myid: parentid: mech:

 11  +1    0.0    0.0   79.8   5.304  0.000     5.281      11.325   -53.603    11      321     1         0     0 
  9  -1    0.0    0.0   79.8   0.379  0.000     0.352      17.746    40.634     9     -211     2         0     0 
 16  +0    0.0    0.0   79.8   3.122  0.000     3.082      11.732   141.844    16      310     3         0     0 
 14  +1    0.0    0.0   79.8   1.133  0.000     0.636      42.469   118.373    14     2212     4         0     0 
  8  +1   -1.0    0.8   85.9   0.455  0.000     0.434      23.577   117.502     8      211     0         3     0 
  9  -1   -1.0    0.8   85.9   2.667  0.000     2.663      10.256   150.514     9     -211     0         3     0 
  5  +1  -65.4    0.7  210.0   0.110  0.000     0.030     113.418   172.483     5      -13     0         3     0 
  4  +0  -65.4    0.7  210.0   0.030  0.000     0.030      66.582    -7.517     4   121416     0         3     0

Discussion

  • If a particle is decayed by hdgeant, then the value of "parentid" points to the "myid" that the particle came from. For example, here the π+ and π- are shown with parentid = 3, meaning they came from the K0.
  • HOWEVER: note that the muplus and the neutrino ALSO show parentid = 3. This makes it look like the K0 decayed to π+, π-, μ+, ν instead of showing the π+ decaying to μ+, ν Note also that you can't just set the "parentid" of the neutrino to the "myid" of the π+ because it is zero, and thus would then look like it was produced by the generator.
  • Therefore, "myid" should be set to a unique number for all particles, and "parentid" should be set appropriately for all stages of particle decays in hdgeant.