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Cross section for b b¯ production via dielectrons in d + Au collisions at sNN =200 GeV CROSS SECTION for b b¯ PRODUCTION VIA ⋯ A. ADARE et al.

  • Author(s): Adare, A;
  • Aidala, C;
  • Ajitanand, NN;
  • Akiba, Y;
  • Al-Bataineh, H;
  • Alexander, J;
  • Angerami, A;
  • Aoki, K;
  • Apadula, N;
  • Aramaki, Y;
  • Atomssa, ET;
  • Averbeck, R;
  • Awes, TC;
  • Azmoun, B;
  • Babintsev, V;
  • Bai, M;
  • Baksay, G;
  • Baksay, L;
  • Barish, KN;
  • Bassalleck, B;
  • Basye, AT;
  • Bathe, S;
  • Baublis, V;
  • Baumann, C;
  • Bazilevsky, A;
  • Belikov, S;
  • Belmont, R;
  • Bennett, R;
  • Bhom, JH;
  • Blau, DS;
  • Bok, JS;
  • Boyle, K;
  • Brooks, ML;
  • Buesching, H;
  • Bumazhnov, V;
  • Bunce, G;
  • Butsyk, S;
  • Campbell, S;
  • Caringi, A;
  • Chen, CH;
  • Chi, CY;
  • Chiu, M;
  • Choi, IJ;
  • Choi, JB;
  • Choudhury, RK;
  • Christiansen, P;
  • Chujo, T;
  • Chung, P;
  • Chvala, O;
  • Cianciolo, V;
  • Citron, Z;
  • Cole, BA;
  • Conesa Del Valle, Z;
  • Connors, M;
  • Csanád, M;
  • Csörgo, T;
  • Dahms, T;
  • Dairaku, S;
  • Danchev, I;
  • Das, K;
  • Datta, A;
  • David, G;
  • Dayananda, MK;
  • Denisov, A;
  • Deshpande, A;
  • Desmond, EJ;
  • Dharmawardane, KV;
  • Dietzsch, O;
  • Dion, A;
  • Donadelli, M;
  • Drapier, O;
  • Drees, A;
  • Drees, KA;
  • Durham, JM;
  • Durum, A;
  • Dutta, D;
  • D'Orazio, L;
  • Edwards, S;
  • Efremenko, YV;
  • Ellinghaus, F;
  • Engelmore, T;
  • Enokizono, A;
  • En'Yo, H;
  • Esumi, S;
  • Fadem, B;
  • Fields, DE;
  • Finger, M;
  • Finger, M;
  • Fleuret, F;
  • Fokin, SL;
  • Fraenkel, Z;
  • Frantz, JE;
  • Franz, A;
  • Frawley, AD;
  • Fujiwara, K;
  • Fukao, Y;
  • Fusayasu, T;
  • Garishvili, I;
  • Glenn, A;
  • Gong, H
  • et al.
Abstract

We report a measurement of e+e- pairs from semileptonic heavy-flavor decays in d+Au collisions at sNN=200 GeV. By exploring the mass and transverse-momentum dependence of the yield, the bottom decay contribution can be isolated from charm, and quantified by comparison to pythia and mc@nlo simulations. The resulting bb¯-production cross section is σbb¯dAu=1.37±0.28(stat)±0.46(syst) mb, which is equivalent to a nucleon-nucleon cross section of σbbNN=3.4±0.8(stat)±1.1(syst)μb.

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