Properties of selected tagged Leptons

When doing a loop on all reconstructed charged tracks :

DO ITK=KFCHT,KLCHT

you can access the QSELEP results as follows :

ALPHA Track ITK is a Lepton tagged by QSELEP if :

XLEPTG(ITK) = .TRUE.

If yes , then :

KLEPPA(ITK)

QSELEP lepton type :

• 2 = e+
• 12 = e+ in crack region
• 22 = e+ in overlap region
• 3 = e-
• 13 = e- in crack region
• 23 = e- in overlap region
• 5 = mu+ QMUIDO IDF=14
• 15 = mu+ QMUIDO IDF=13
• 25 = mu+ QMUIDO IDF=11
• 35 = mu+ QMUIDO IDF=15
• 45 = mu+ all other QMUIDO flags
• 6 = mu- QMUIDO IDF=14
• 16 = mu- QMUIDO IDF=13
• 26 = mu- QMUIDO IDF=11
• 36 = mu- QMUIDO IDF=15
• 46 = mu- all other QMUIDO flags
KLEPJT(ITK)
ALPHA "track" Number of nearest jet in LJET section of ALPHA The properties of this jet can be accessed directly by standard ALPHA functions

e.g. PXJET = QX(KLEPJT(ITK))

QLEPPI(ITK)
Transverse momentum respect to the jet , lepton included
QLEPPE(ITK)
Transverse momentum respect to the jet lepton excluded
KLEPVP(ITK)
Flag giving the validity of the Pt calculation :
• 0 = OK
• 10 = No E-flow track found
• 20 = No valid jet
• 30 = Not enough objects in jet