Cross section for bb¯ production via dielectrons in d + Au collisions at sNN−−−−√=200 GeV

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 simula...

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Veröffentlicht in:	Physical review. C 2015-01, Vol.91 (1)
Hauptverfasser:	Adare, A., Aidala, C., Ajitanand, N. N., Akiba, Y., Al-Bataineh, H., Alexander, J., Angerami, A., Aoki, K., Apadula, N., Aramaki, Y., Atomssa, E. T., Averbeck, R., Awes, T. C., Azmoun, B., Babintsev, V., Bai, M., Baksay, G., Baksay, L., Barish, K. N., Bassalleck, B., Basye, A. T., Bathe, S., Baublis, V., Baumann, Cédric, Bazilevsky, A., Belikov, S., Belmont, R., Bennett, R., Bhom, J. H., Blau, D. S., Bok, J. S., Boyle, K., Brooks, M. L., Buesching, H., Bumazhnov, V., Bunce, G., Butsyk, S., Campbell, S., Caringi, A., Chen, C.-H., Chi, C. Y., Chiu, M., Choi, I. J., Choi, J. B., Choudhury, R. K., Christiansen, P., Chujo, T., Chung, P., Chvala, O., Cianciolo, V., Citron, Z., Cole, B. A., Conesa del Valle, Z., Connors, M., Csanád, M., Csörgő, T., Dahms, T., Dairaku, S., Danchev, I., Das, K., Datta, A., David, G., Dayananda, M. K., Denisov, A., Deshpande, A., Desmond, E. J., Dharmawardane, K. V., Dietzsch, O., Dion, A., Donadelli, M., Drapier, O., Drees, A., Drees, K. A., Durham, J. M., Durum, A., Dutta, D., d'Orazio, L., Edwards, S., Efremenko, Y. V., Ellinghaus, F., Engelmore, T., Enokizono, A., En'Yo, H., Esumi, S., Fadem, B., Fields, D. E., Finger, M., Fleuret, F., Fokin, S. L., Fraenkel, Z., Frantz, J. E., Franz, A., Frawley, A. D., Fujiwara, K., Fukao, Y., Fusayasu, T., Garishvili, I., Glenn, A., Gong, H., Gonin, M.
Format:	Artikel
Sprache:	eng
Schlagworte:	Nuclear Experiment Physics
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Zusammenfassung:	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 σdAubb¯=1.37±0.28(stat)±0.46(syst) mb, which is equivalent to a nucleon-nucleon cross section of σNNbb=3.4±0.8(stat)±1.1(syst)μb.
ISSN:	2469-9985 2469-9993
DOI:	10.1103/PhysRevC.91.014907