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

We measure the top quark mass (m(t)) in p ̄p collisions at a center of mass energy √s = 1.96 TeV using dilepton t ̄t→W(+)bW(-) ̄b→ℓ(+)ν(ℓ)bℓ(-) ̄ν(ℓ) ̄b 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) colle...

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Veröffentlicht in:	Physical review letters 2011-08, Vol.107 (8), p.082004-082004, Article 082004
Hauptverfasser:	Abazov, V M, Abbott, B, Acharya, B S, Adams, M, Adams, T, Alexeev, G D, Alkhazov, G, Alton, A, Alverson, G, Alves, G A, Ancu, L S, Aoki, M, Arov, M, Askew, A, Åsman, B, Atramentov, O, Avila, C, BackusMayes, J, Badaud, F, Bagby, L, Baldin, B, Bandurin, D V, Banerjee, S, Barberis, E, Baringer, P, Barreto, J, Bartlett, J F, Bassler, U, Bazterra, V, Beale, S, Bean, A, Begalli, M, Begel, M, Belanger-Champagne, C, Bellantoni, L, Beri, S B, Bernardi, G, Bernhard, R, Bertram, I, Besançon, M, Beuselinck, R, Bezzubov, V A, Bhat, P C, Bhatnagar, V, Blazey, G, Blessing, S, Bloom, K, Boehnlein, A, Boline, D, Boos, E E, Borissov, G, Bose, T, Brandt, A, Brandt, O, Brock, R, Brooijmans, G, Bross, A, Brown, D, Brown, J, Bu, X B, Buehler, M, Buescher, V, Bunichev, V, Burdin, S, Burnett, T H, Buszello, C P, Calpas, B, Camacho-Pérez, E, Carrasco-Lizarraga, M A, Casey, B C K, Castilla-Valdez, H, Chakrabarti, S, Chakraborty, D, Chan, K M, Chandra, A, Chen, G, Chevalier-Théry, S, Cho, D K, Cho, S W, Choi, S, Choudhary, B, Cihangir, S, Claes, D, Clutter, J, Cooke, M, Cooper, W E, Corcoran, M, Couderc, F, Cousinou, M-C, Croc, A, Cutts, D, Das, A, Davies, G, De, K, de Jong, S J, De la Cruz-Burelo, E, Déliot, F, Demarteau, M, Demina, R, Denisov, D
Format:	Artikel
Sprache:	eng
Schlagworte:	A CENTERS Experiment-HEP FERMILAB TEVATRON Fysik High Energy Physics - Experiment LUMINOSITY NATURAL SCIENCES NATURVETENSKAP Physics PHYSICS OF ELEMENTARY PARTICLES AND FIELDS T QUARKS
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Beschreibung
Zusammenfassung:	We measure the top quark mass (m(t)) in p ̄p collisions at a center of mass energy √s = 1.96 TeV using dilepton t ̄t→W(+)bW(-) ̄b→ℓ(+)ν(ℓ)bℓ(-) ̄ν(ℓ) ̄b 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 m(t)=174.0±1.8(stat)±2.4(syst) GeV, which is in agreement with the current world average m(t)=173.3±1.1 GeV. This is currently the most precise measurement of m(t) in the dilepton channel.
ISSN:	0031-9007 1079-7114 1079-7114
DOI:	10.1103/PhysRevLett.107.082004