Precise measurement of the top quark mass in the dilepton channel at D0

We measure the top quark mass (mt) in ppbar collisions at a center of mass energy of 1.96 TeV using dilepton ttbar->W+bW-bbar->l+nubl-nubarbbar events, where l denotes an electron, a muon, or a tau that decays leptonically. The data correspond to an integrated luminosity of 5.4 fb-1 collected...

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Veröffentlicht in:	arXiv.org 2011-08
Hauptverfasser:	Askew, A, Åsman, B, Bagby, L, Banerjee, S, Barreto, J, Bazterra, V, Beale, S, Bean, A, Bertram, I, Bhat, P C, Blazey, G, Brooijmans, G, Buehler, M, Buescher, V, Bunichev, V, Burdin, S, Casey, B C K, Chevalier-Théry, S, Cihangir, S, Déliot, F, Denisov, S P, Desai, S, Dudko, L V, Eads, M, Filthaut, F, tner, M, Geng, W, Ginther, G, Golovanov, G, Goussiou, A, Grannis, P D, Haas, A, Han, L, Hauptman, J M, Hays, J, Heinson, A P, Hildreth, M D, Hubacek, Z, Hynek, V, Ito, A S, Jabeen, S, Jaffré, M, Joshi, J, Jung, A W, Kajfasz, E, Katsanos, I, Kehoe, R, Khatidze, D, Kirby, M H, Kohli, J M, Kvita, J, Lee, H S, Lee, W M, L Li, Liu, Y, Lobodenko, A, Luna-Garcia, R, Madar, R, Magaña-Villalba, R, Martínez-Ortega, J, Meijer, M M, Melnitchouk, A, Meyer, A, Meyer, J, Miconi, F, Muanza, G S, Naimuddin, M, Neustroev, P, Novaes, S F, Obrant, G, G J Otero y Garzón, Padilla, M, Partridge, R, Parua, N, Patwa, A, Penning, B, Piegaia, R, Qian, J, Ranjan, K, Renkel, P, Ripp-Baudot, I, Sanders, M P, Sanghi, B, Savage, G, Sawyer, L, Scanlon, T, Schwanenberger, C, Sekaric, J, Severini, H, Shabalina, E, Takahashi, M, Wayne, M, White, A, Wicke, D, Williams, M R J, Wilson, G W, Yamada, R, W -C Yang, Z Ye, Yin, H
Format:	Artikel
Sprache:	eng
Schlagworte:	Luminosity Physics - High Energy Physics - Experiment Quarks
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Beschreibung
Zusammenfassung:	We measure the top quark mass (mt) in ppbar collisions at a center of mass energy of 1.96 TeV using dilepton ttbar->W+bW-bbar->l+nubl-nubarbbar events, where l denotes an electron, a muon, or a tau that decays leptonically. The data correspond to an integrated luminosity of 5.4 fb-1 collected with the D0 detector at the Fermilab Tevatron Collider. We obtain mt = 174.0 +- 1.8(stat) +- 2.4(syst) GeV, which is in agreement with the current world average mt = 173.3 +- 1.1 GeV. This is currently the most precise measurement of mt in the dilepton channel.
ISSN:	2331-8422
DOI:	10.48550/arxiv.1105.0320