Reference distributions for validation

A list of attached distributions with a short explanation on how they are obtained should be provided. You are welcome to make a dedicated page for each topic with a link from here.

Physics Working groups

Rare Decays

CP measurements

Beta_s and oscillations

Gamma with Trees

Gamma with Loops

For the MC verification plots, the decay mode Bd->K-pi+ was chosen as it had a large number of events in the Stripping12 Data compared with other modes of interest. The equivalent MC10 decay mode was then obtained from bookkeeping for comparison. Both the data sample and MC10 sample were run through the StrippingB2Charged2Body line, with the following further offline cuts applied to filter down to the Bd->K-pi+ channel (again done on both to be consistent):

Daughter Cuts:

min (IP chi2) < 100

for kaon:

min(PIDK-pi) > +8 min(PIDK-p) > -5 min(PIDK-e) > 0 min(PIDK-mu) > 0

for pion:

min(PIDK-pi) < -8 min(PIDp-pi) < 0 min(PIDe-pi) < 0 min(PIDmu-pi) < 0

Combination Cuts:

max(PT) > 2.7GeV min(Track chi2) < 3.0 max(IP Chi2) > 200

Mother Cuts:

PT > 1.2 GeV IP Chi2 < 12

The scripts used to select and plot the events are included in the .tar file attached to the bottom of this page. The produced distributions are in the included .root file, with a list of the distributions as follows:

Mother (Bd): Mass, Lifetime, P, PT, MinIP, MinIP Chi2

Daughter Minus (Kaon): P, PT, PIDK, MinIP, MinIP Chi2

Daughter Plus (Pion): P, PT, PIDK, MinIP, MinIP Chi2


Production and Spectroscopy









Silicon Trackers



Muon system

Reconstructions and trigger

-- GloriaCorti - 24-May-2011

Topic attachments
I Attachment History Action Size Date Who Comment
Compressed Zip archivetar GWL_VerificationDistributions.tar r1 manage 180.0 K 2011-07-26 - 16:54 UnknownUser File containing selection and plot scripts, with separate .root file containing plotted distributions. GWL
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Topic revision: r3 - 2011-07-26 - unknown
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