1. 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
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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, Fleuret, F, Fokin, SL, Fraenkel, Z, Frantz, JE, Franz, A, Frawley, AD, Fujiwara, K, Fukao, Y, Fusayasu, T, Garishvili, I, Glenn, A, and Gong, H
- Subjects
nucl-ex ,Nuclear & Particles Physics ,Atomic ,Molecular ,Nuclear ,Particle and Plasma Physics ,Atomic ,Molecular ,Nuclear ,Particle and Plasma Physics - 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.
- Published
- 2015