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Measurement of charm and bottom production from semileptonic hadron decays in p+p collisions at s =200 GeV

  • Author(s): 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
  • Canoa Roman, V
  • Cervantes, R
  • Chi, CY
  • Chiu, M
  • Choi, IJ
  • Choi, JB
  • Citron, Z
  • Connors, M
  • Cronin, N
  • Csanád, M
  • Csörgo, T
  • Danley, TW
  • Daugherity, MS
  • David, G
  • Deblasio, K
  • Dehmelt, K
  • Denisov, A
  • Deshpande, A
  • Desmond, EJ
  • Dion, A
  • Dixit, D
  • Do, JH
  • 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
  • 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
  • Grosse Perdekamp, M
  • 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
  • et al.
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.

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