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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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