Measurements of B→J/ψ at forward rapidity in p+p collisions at √s=510 GeV

We report the first measurement of the fraction of J/ψ mesons coming from B-meson decay (FB→J/ψ) in p+p collisions at s=510 GeV. The measurement is performed using the forward silicon vertex detector and central vertex detector at PHENIX, which provide precise tracking and distance-of-closest-approach determinations, enabling the statistical separation of J/ψ due to B-meson decays from prompt J/ψ. The measured value of FB→J/ψ is 8.1%±2.3%(stat)±1.9%(syst) for J/ψ with transverse momenta 0

Keywords:

• Physics
• Quantum electrodynamics
• Particle physics
• Hadron
• Quantum chromodynamics
• Meson
• Nuclear physics
• Center of mass
• Rapidity
• B meson
• silicon vertex detector
• Transverse plane

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