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Chefdevi stripping calopid branch

Maximilien Chefdeville requested to merge chefdevi_stripping_calopid_branch into stripping21-patches

This line selects high-energy pi0 reconstructed as photons by building a D0 from K pi gamma. It will serve the evaluation of performance of the gamma/pi0 IsPhoton variable. It can also serve further optimisation of this tool.

Selections are entirely based on D02Kpipi0 (tight pions and kaons) which do not reconstruct the D*, hence the high rate and tight prescale. Pt cut on photon is relatively high (2 GeV/c) to match the threshold for pi0 reconstruction as merged.

Rate tests on 10k events for 2011:

StrippingReport                                                INFO Event 10000, Good event 10000
 |                                              *Decision name*|*Rate,%*|*Accepted*| *Mult*|*ms/evt*|
 |_StrippingGlobal_                                            |  0.0300|         3|       |   0.788|
 |_StrippingSequenceStreamCalibration_                         |  0.0300|         3|       |   0.766|
 |!StrippingD02KPiGamma                                        |  0.0200|         2|  1.000|   0.104|
 |!StrippingD02KPiGamma_TIMING                                 |  0.0100|         1|  1.000|   0.099|

Rate tests on 10k events for 2012:

StrippingReport                                                INFO Event 10000, Good event 10000
 |                                              *Decision name*|*Rate,%*|*Accepted*| *Mult*|*ms/evt*|
 |_StrippingGlobal_                                            |  0.0400|         4|       |   1.046|
 |_StrippingSequenceStreamCalibration_                         |  0.0400|         4|       |   1.022|
 |!StrippingD02KPiGamma                                        |  0.0200|         2|  1.500|   0.162|
 |!StrippingD02KPiGamma_TIMING                                 |  0.0200|         2|  1.000|   0.149|
Edited by Carlos Vazquez Sierra

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