Publications [#308240] of Ashutosh V. Kotwal

Papers Published
  1. Abbott, B; Abolins, M; Acharya, BS; Adam, I; Adams, DL; Adams, M; Ahn, S; Aihara, H; Alves, GA; Amos, N; Anderson, EW; Astur, R; Baarmand, MM; Baden, A; Balamurali, V; Balderston, J; Baldin, B; Banerjee, S; Bantly, J; Barberis, E; Bartlett, JF; Bazizi, K; Belyaev, A; Beri, SB; Bertram, I; Bezzubov, VA; Bhat, PC; Bhatnagar, V; Bhattacharjee, M; Biswas, N; Blazey, G; Blessing, S; Bloom, P; Boehnlein, A; Bojko, NI; Borcherding, F; Boswell, C; Brandt, A; Brock, R; Bross, A; Buchholz, D et al., Direct measurement of the top quark mass by the DO Collaboration, Physical Review D, vol. 58 no. 5 (1998), pp. DUMMY5 .

    We determine the top quark mass mt using tt pairs produced in the DØ detector by √s=1.8TeV pp collisions in a 125 pb-1 exposure at the Fermilab Tevatron. We make a two constraint fit to m1 in tt→bW+bW- final states with one W boson decaying to qq and the other to ev or μv. Likelihood fits to the data yield mt(l+jets)= 173.3±5.6 (stat) ±5.5 (syst) GeV/c2. When this result is combined with an analysis of events in which both W bosons decay into leptons, we obtain mt= 172.1 ±5.2 (stat) ±4.9 (syst) GeV/c2. An alternate analysis, using three constraint fits to fixed top quark masses, gives mt(l+ jets) = 176.0 ±7.9 (stat)± 4.8 (syst) GeV/c2, consistent with the above result. Studies of kinematic distributions of the top quark candidates are also presented. © 1998 The American Physical Society.