Difference: RecoXX (19 vs. 20)

Revision 202013-06-27 - PaulSeyfert

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META TOPICPARENT name="LHCbTracking"
The information on this page is complementary to the information on official productions that can be found here
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 new wrt 2010
Added:
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ANNPID available on DST in tuning FIXME
 

Reco12a

FIXME
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  • all features developed during 2012 (see below)
  • (among others - i only list those which triggered questions to me) * new clone killing (new definition of track multiplicity)
Changed:
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<
* new track fit in OT (smaller chi^2)
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* new track fit in OT (smaller chi^2; new chi^2 values; cut at chi^2<3 introduced)
  * ghost probability available
Changed:
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  • better alignment & calibration
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  • better alignment & calibration (better momentum/mass resolution)
 
Added:
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ANNPID available on DST in tuning FIXME(something older than MC12TuneV2) ->supersed by MC12TuneV2 (automatically provided when opening with DV v33r3p3 onwards)
 

2012

at the time of writing, for a maximum data set, you want
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  used in Stripping19a
Changed:
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<
  • new clone killing strategy: more elaborate strategy of deciding which track of a particle to keep. improved performance for downstream & Velo tracks. longtrack efficiency rather stable. cuts aligned with standard particle cuts in rich reco and davinci => no tracks with chi2>3 kept on DST. Hence (on the same events) there are less tracks than in earlier reco versions. on dedicated request, yet another wording: this means that the track multiplicities are lower than in earlier reco versions.
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>
  • new clone killing strategy: more elaborate strategy of deciding which track of a particle to keep. improved performance for downstream & Velo tracks. longtrack efficiency rather stable. cuts aligned with standard particle cuts in rich reco and davinci => no tracks with chi2>3 kept on DST. Hence (on the same events) there are less tracks than in earlier reco versions. on dedicated request, yet another wording: this means that the track multiplicities are lower than in earlier reco versions.
 
  • no new negative side effects known so far.

for the experts: Reco13a uses REC v13r3 in Brunel v42r3p2

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  • Same code as Reco13e
  • new calibrations wrt Reco13e
Added:
>
>
ANNPID available on DST in tuning FIXME(something older than MC12TuneV2) ->supersed by MC12TuneV2 (automatically provided when opening with DV v33r3p3 onwards)
 

Stripping versions

Albeit contrary rumours, it's easy to look up in the bookkeeping that the reco-stripping relation is neither 1:1, nor many:1, nor 1:many, but really many:many. See below:

 
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