Download - B + →J/ K +
Transcript
B+→J/ K+
Mass = (5326.7±10.9) MeV/c2
Momentum: p = 62.7 GeV/c, pT = 10.48 GeV/cCos(a) = 0.9999, dist = 2.03mm
B+→J/ K+
XY Projection
B+→J/ K+
Primary vertex
B decay vertex
m+
m-
K+
J/
B+
XY Projection
[mm]
[mm]
Tracks from primary vertex
B+→J/ K+
Primary vertex
B decay vertex
m+
m-K+
J/
B+
XY Projection
[mm]
[mm]Tracks from primary vertex
Tracks from PV are forced to come from PV
B+→J/ K+
[x 0.2mm]
[mm]
YZ Projection
B+→J/ K+
Primary vertex
B decay vertex
m+
m-
K+
J/
B+
[x 0.2mm]
[mm]
YZ Projection
Tracks from primary vertex
B+→J/ K+
Primary vertex
B decay vertex
m+
m-K+
J/
B+
[x 0.2mm]
[mm]
YZ Projection
Tracks from primary vertex
Tracks from PV are forced to come from PV
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