Measurement of the Bottom Quark contribution to non-photonic electron production in $p+p$ collisions at $\sqrt{s} $=200 GeV

Measurement of the Bottom Quark contribution to non-photonic electron production in $p+p$ collisions at $\sqrt{s} $=200 GeV

The contribution of B meson decays to non-photonic electrons, which are mainly produced by the semi-leptonic decays of heavy flavor mesons, in p+p collisions at $\sqrt{s} =$ 200 GeV has been measured using azimuthal correlations between non-photonic electrons and hadrons. The extracted B decay contr...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Physical review letters 2010, Vol.105
Hauptverfasser: Aggarwal, M.M., Ahammed, Z., Alakhverdyants, A.V., Alekseev, I., Alford, J., D. Anderson, B., Arkhipkin, D., S. Averichev, G., Balewski, J., S. Barnby, L., Baumgart, S., R. Beavis, D., Bellwied, R., J. Betancourt, M., Betts, R.R., Bhasin, A., K. Bhati, A., Bichsel, H., Bielcik, J., Bielcikova, J., Biritz, B., C. Bland, L., E. Bonner, B., Bouchet, J., Braidot, E., V. Brandin, A., Bridgeman, A., Bruna, E., Bueltmann, S., Bunzarov, I., P. Burton, T., Z. Cai, X., Caines, H., Calder'On de La Barca S'Anchez, M., Catu, O., Cebra, D., Cendejas, R., C. Cervantes, M., Chajecki, Z., Chaloupka, P., Chattopadhyay, S., F. Chen, H., H. Chen, J., Y. Chen, J., Cheng, J., Cherney, M., Chikanian, A., E. Choi, K., Christie, W., Chung, P., F. Clarke, R., J. M. Codrington, M., Corliss, R., G. Cramer, J., J. Crawford, H., Das, D., Dash, S., Davila Leyva, A., C. de Silva, L., Debbe, R.R., G. Dedovich, T., A. Derevschikov, A., Derradi de Souza, R., Didenko, L., Djawotho, P., M. Dogra, S., Dong, X., L. Drachenberg, J., E. Draper, J., C. Dunlop, J., R. Dutta Mazumdar, M., G. Efimov, L., Elhalhuli, E., Elnimr, M., Engelage, J., Eppley, G., Erazmus, B., Estienne, Magali, Eun, L., Evdokimov, O., Fachini, P., Fatemi, R., Fedorisin, J., G. Fersch, R., Filip, P., Finch, E., Fine, V., Fisyak, Y., Gagliardi, C.A., R. Gangadharan, D., S. Ganti, M., J. Garcia-Solis, E., Geromitsos, A., Geurts, F., Ghazikhanian, V., Ghosh, P., N. Gorbunov, Y., Gordon, A., Grebenyuk, O., Grosnick, D.
Format: Artikel
Sprache:eng
Schlagworte:
Nuclear Experiment
Physics
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:The contribution of B meson decays to non-photonic electrons, which are mainly produced by the semi-leptonic decays of heavy flavor mesons, in p+p collisions at $\sqrt{s} =$ 200 GeV has been measured using azimuthal correlations between non-photonic electrons and hadrons. The extracted B decay contribution is approximately 50% at a transverse momentum of $p_{T} \geq 5$ GeV/c. These measurements constrain the nuclear modification factor for electrons from B and D meson decays. The result indicates that B meson production in heavy ion collisions is also suppressed at high pT even under the extreme case for the ratio of B to D contributions to non-photonic electrons.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.105.202301