d+ meson leptonic decay

dear all

i try to obtain and check if there is a leptonic decay for d+ meson by;

d+ --> e- + e_neutrino
d+ --> muon- + muon_neutrino
d+ --> tau- + tau_neutrino

but i can not see produced tau+.

am i making a physical mistake in my input card?

ciao
e.

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()".'."() Ercan Pilicer
( (T) ) Uludag University, Turkey
(=C3=B6) (=C3=B6) High Energy Physics Department
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TITLE
TAC Detector
GLOBAL 1000.0 0.0 0.0 0.0 1.
PHOTONUC 1111. ALUMINUM @LASTMAT
DEFAULTS PRECI=
SIO
BEAM -2.25 0.0 10000.0 D+
BEAMPOS 0.0 0.0 0.0 0.0 0.0
PHYSICS 1. PROTON @LASTPAR DECAY=
S
GEOBEGIN COMBN=
AME
    0 0 TAC Charm factory geometry
RPP exbox -5000.00 5000.00 -5000.00 5000.00 -5000.00 5000.00
RPP inbox -50. 50. -50. 50. -50. 50.
RCC bp1 0.00 0.00 -50. 0.00 0.00 20. 1.
RCC bp2 0.00 0.00 -50. 0.00 0.00 20. 2.00
RCC bp3 0.00 0.00 30.00 0.00 0.00 20. 1.
RCC bp4 0.00 0.00 30.00 0.00 0.00 20. 2.00
END
bpl 5 +bp2 -bp1
bpr 5 +bp4 -bp3
invoid 5 +inbox -( +bp2 -bp1 ) -( +bp4 -bp3 )
exvoid 5 +exbox -inbox
END
GEOEND
ASSIGNMA BLCKHOLE exvoid
ASSIGNMA VACUUM invoid
ASSIGNMA BERYLLIU bpl
ASSIGNMA BERYLLIU bpr
SCORE BEAMPART
USRBIN 11. BEAMPART -25. 1. 0.0 1.BPart
USRBIN 0.0 0.0 -1. 100. 100. 100.&
USRBIN 11. TAU+ -25. 1. 0.0 1.tau+
USRBIN 0.0 0.0 -1. 100. 100. 100.&
USRBIN 11. ELECTRON -25. 1. 0.0 1.elect=
rn
USRBIN 0.0 0.0 -1. 100. 100. 100.&
USRBIN 11. MUON+ -25. 1. 0.0 1.muon
USRBIN 0.0 0.0 -1. 100. 100. 100.&
RANDOMIZ 1.0
START 1D5 9999999.0
STOP

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Received on Tue Dec 02 2008 - 15:55:03 CET