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Analysis of B+ Meson Decay to J/ψ and K+ with Momentum and Vertex Projections

This analysis focuses on the decay of the B+ meson into J/ψ and K+, with a mass measurement of (5326.7±10.9) MeV/c² and momentum values of p = 62.7 GeV/c and pT = 10.48 GeV/c. Utilizing XY and YZ projections, we explore the trajectory of tracks originating from the primary vertex to the decay vertex of J/ψ and K+. The study emphasizes the precision of tracks constrained to come from the primary vertex and provides insights into the particle decay dynamics with a significant cos(a) value of 0.9999 and a distance of 2.03 mm.

samuel-buck
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Analysis of B+ Meson Decay to J/ψ and K+ with Momentum and Vertex Projections

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  1. B+→J/K+ Mass = (5326.7±10.9) MeV/c2Momentum: p = 62.7 GeV/c, pT = 10.48 GeV/cCos(a) = 0.9999, dist = 2.03mm

  2. B+→J/K+ XY Projection

  3. B+→J/K+ [mm] XY Projection Primary vertex B+ m+ Tracks fromprimaryvertex B decayvertex J/ m- K+ [mm]

  4. B+→J/K+ XY Projection [mm] Tracks fromprimaryvertex Primary vertex B+ m+ B decayvertex J/ K+ m- [mm] Tracks from PV areforcedtocomefrom PV

  5. B+→J/K+ [x 0.2mm] YZ Projection [mm]

  6. B+→J/K+ [x 0.2mm] YZ Projection Tracks fromprimaryvertex Primary vertex B+ m+ B decayvertex J/ m- K+ [mm]

  7. B+→J/K+ YZ Projection [x 0.2mm] Tracks fromprimaryvertex Primary vertex B+ m+ J/ K+ m- B decayvertex [mm] Tracks from PV areforcedtocomefrom PV

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