Measurement of Bottom versus Charm as a Function of Transverse Momentum with Electron-Hadron Correlations in p+p Collisions at sqrt(s)=200 GeV

The momentum distribution of electrons from semi-leptonic decays of charm and bottom for mid-rapidity |y| e^{+/-} K^{-/+} X (K unidentified) reconstruction. It is found that the yield of electrons from bottom becomes significant above 4 GeV/c in p_T. A fixed-order-plus-next-to-leading-log (FONLL) pe...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Physical review letters 2009, Vol.103
Hauptverfasser:	Adare, A., Afanasiev, S., Aidala, C., Ajitanand, N.N., Akiba, Y., Al-Bataineh, H., Alexander, J., Aoki, K., Aphecetche, Laurent, Armendariz, R., Aronson, S.H., Asai, J., Atomssa, E. T., Averbeck, R., Awes, T.C., Azmoun, B., Babintsev, V., Bai, M., Baksay, G., Baksay, L., Baldisseri, A., Barish, K.N., Barnes, P.D., Bassalleck, B., Basye, A.T., Bathe, S., Batsouli, S., Baublis, V., Baumann, Cédric, Bazilevsky, A., Belikov, S., Bennett, R., Berdnikov, A., Berdnikov, Y., Bickley, A.A., Boissevain, J.G., Borel, H., Boyle, K., Brooks, M.L., Buesching, H., Bumazhnov, V., Bunce, G., Butsyk, S., Muñoz Camacho, C., Campbell, S., Chang, B.S., Chang, W.C., Charvet, J.-L., Chernichenko, S., Chiba, J., Chi, C.Y., Chiu, M., Choi, I.J., Choudhury, R.K., Chujo, T., Chung, P., Churyn, A., Cianciolo, V., Citron, Z., Cleven, C.R., Cole, B.A., Comets, M.P., Constantin, P., Csanad, M., Csorgo, T., Dahms, T., Dairaku, S., Das, K., David, G., Deaton, M.B., Dehmelt, K., Delagrange, H., Denisov, A., d'Enterria, D., Deshpande, A., Desmond, E.J., Dietzsch, O., Dion, A., Donadelli, M., Drapier, O., Drees, A., Drees, K.A., Dubey, A.K., Durum, A., Dutta, D., Dzhordzhadze, V., Efremenko, Y.V., Egdemir, J., Ellinghaus, F., Emam, W.S., Engelmore, T., Enokizono, A., Enyo, H., Esumi, S., Eyser, K.O., Fadem, B., Fields, D.E., Finger, M., M. Finger, Jr, Fleuret, F.
Format:	Artikel
Sprache:	eng
Schlagworte:	High Energy Physics - Experiment Physics
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The momentum distribution of electrons from semi-leptonic decays of charm and bottom for mid-rapidity \|y\| e^{+/-} K^{-/+} X (K unidentified) reconstruction. It is found that the yield of electrons from bottom becomes significant above 4 GeV/c in p_T. A fixed-order-plus-next-to-leading-log (FONLL) perturbative quantum chromodynamics (pQCD) calculation agrees with the data within the theoretical and experimental uncertainties. The extracted total bottom production cross section at this energy is \sigma_{b\b^bar}= 3.2 ^{+1.2}_{-1.1}(stat) ^{+1.4}_{-1.3}(syst) micro b.
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.103.082002