학술논문
Measurement of charm and bottom production from semileptonic hadron decays in p+p collisions at s=200 GeV
Document Type
article
Author
Aidala, C; Akiba, Y; Alfred, M; Andrieux, V; Apadula, N; Asano, H; Azmoun, B; Babintsev, V; Bandara, NS; Barish, KN; Bathe, S; Bazilevsky, A; Beaumier, M; Belmont, R; Berdnikov, A; Berdnikov, Y; Blau, DS; Bok, JS; Brooks, ML; Bryslawskyj, J; Bumazhnov, V; Campbell, S; Roman, V Canoa; Cervantes, R; Y., C; Chiu, M; Choi, IJ; Choi, JB; Citron, Z; Connors, M; Cronin, N; Csanád, M; Csörgő, T; Danley, TW; Daugherity, MS; David, G; DeBlasio, K; Dehmelt, K; Denisov, A; Deshpande, A; Desmond, EJ; Dion, A; Dixit, D; H., J; Drees, A; Drees, KA; Durham, JM; Durum, A; Enokizono, A; En’yo, H; Esumi, S; Fadem, B; Fan, W; Feege, N; Fields, DE; Finger, M; Fokin, SL; Frantz, JE; Franz, A; Frawley, AD; Fukuda, Y; Gal, C; Gallus, P; Gamez, EA; Garg, P; Ge, H; Giordano, F; Goto, Y; Grau, N; Greene, SV; Perdekamp, M Grosse; Gunji, T; Guragain, H; Hachiya, T; Haggerty, JS; Hahn, KI; Hamagaki, H; Hamilton, HF; Han, SY; Hanks, J; Hasegawa, S; Haseler, TOS; He, X; Hemmick, TK; Hill, JC; Hill, K; Hodges, A; Hollis, RS; Homma, K; Hong, B; Hoshino, T; Hotvedt, N; Huang, J; Huang, S; Imai, K; Inaba, M; Iordanova, A; Isenhower, D; Ishimaru, S
Source
Physical Review D. 99(9)
Subject
Language
Abstract
Measurements of the differential production of electrons from open-heavy-flavor hadrons with charm- and bottom-quark content in p+p collisions at s=200 GeV are presented. The measurements proceed through displaced-vertex analyses of electron tracks from the semileptonic decay of charm and bottom hadrons using the PHENIX silicon-vertex detector. The relative contribution of electrons from bottom decays to inclusive heavy-flavor-electron production is found to be consistent with fixed-order-plus-next-to-leading-log perturbative-QCD calculations within experimental and theoretical uncertainties. These new measurements in p+p collisions provide a precision baseline for comparable forthcoming measurements in A+A collisions.