학술논문
Measurements of B →j /ψ at forward rapidity in p+p collisions at s =510 GeV
Document Type
Author
Aidala, C.; Ajitanand, N. N.; Akiba, Y.; Akimoto, R.; Alexander, J J; Alfred, M.; Aoki, K.; Apadula, N; Asano, H.; Atomssa, E. T.; Attila, A.; Awes, T. C.; Ayuso, Carmen; Azmoun, B.; Babintsev, V.; Bai, M; Bai, X.; Bannier, B; Barish, K N; Bathe, S; Baublis, V.; Baumann, C.; Baumgart, S.; Bazilevsky, A; Beaumier, M.; Belmont, R; Berdnikov, A; Berdnikov, Y.; Black, D; Blau, D. S.; Boer, M.; Bok, J S; Boyle, K; Brooks, M L; Bryslawskyj, J.; Buesching, H; Bumazhnov, V.; Butler, Christopher C.; Butsyk, S.; Campbell, S.; Canoaroman, C.; Chen, C. H.; Chi, C Y; Chiu, M; Choi, I J; Choi, J B; Christiansen, P.; Oskarsson, A.; Silvermyr, D.; Stenlund, E.
Source
Physical Review D - Particles, Fields, Gravitation and Cosmology. 95(9)
Subject
Language
English
ISSN
2470-0010
Abstract
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