Search for t(t)over-bar resonances in the lepton plus jets final state in p(p)over-bar collisions at root s=1.96 TeV

  • Abazov, V. M.
  • Abbott, B.
  • Abolins, M.
  • Acharya, B. S.
  • Adams, M.
  • 외 523명
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초록

We present a search for a narrow-width heavy resonance decaying into top quark pairs (X -> t (t) over bar) in p (p) over bar collisions at root s = 1.96 TeV using approximately 0.9 fb(-1) of data collected with the DO detector at the Fermilab Tevatron Collider. This analysis considers t (t) over bar candidate events in the lepton plus jets channel with at least one identified b jet and uses the t (t) over bar invariant mass distribution to search for evidence of resonant production. We find no evidence for a narrow resonance X decaying to t (t) over bar. Therefore, we set upper limits on sigma x center dot B(X -> t (t) over bar) for different hypothesized resonance masses using a Bayesian approach. For a Topcolor-assisted technicolor model, the existence of a leptophobic Z' boson with mass M-Z' < 700 GeV and width Gamma(Z') = 0.012M(Z') can be excluded at the 95% C.L. (C) 2008 Elsevier B.V. All rights reserved.

키워드

TOP-QUARK PRODUCTIONPRODUCTION CROSS-SECTIONEVENTS
제목
Search for t(t)over-bar resonances in the lepton plus jets final state in p(p)over-bar collisions at root s=1.96 TeV
저자
Abazov, V. M.Abbott, B.Abolins, M.Acharya, B. S.Adams, M.Adams, T.Aguilo, E.Ahn, S. H.Ahsan, M.Alexeev, G. D.Alkhazov, G.Alton, A.Alverson, G.Alves, G. A.Anastasoaie, M.Ancu, L. S.Andeen, T.Anderson, S.Andrieu, B.Anzelc, M. S.Aoki, M.Arnoud, Y.Arov, M.Arthaud, M.Askew, A.Asman, B.Jesus, A. C. S. AssisAtramentov, O.Avila, C.Badaud, F.Baden, A.Bagby, L.Baldin, B.Bandurin, D. V.Banerjee, P.Banerjee, S.Barberis, E.Barfuss, A. -F.Bargassa, P.Baringer, P.Barreto, J.Bartlett, J. F.Bassler, U.Bauer, D.Beale, S.Bean, A.Begalli, M.Begel, M.Belanger-Champagne, C.Bellantoni, L.Bellavance, A.Benitez, J. A.Beri, S. B.Bernardi, G.Bernhard, R.Bertram, I.Besancon, M.Beuselinck, R.Bezzubov, V. A.Bhat, P. C.Bhatnagar, V.Biscarat, C.Blazey, G.Blekman, F.Blessing, S.Bloch, D.Bloom, K.Boehnlein, A.Boline, D.Bolton, T. A.Boos, E. E.Borissov, G.Bose, T.Brandt, A.Brock, R.Brooijmans, G.Bross, A.Brown, D.Buchanan, N. J.Buchholz, D.Buehler, M.Buescher, V.Bunichev, V.Burdin, S.Burke, S.Burnett, T. H.Buszello, C. 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DOI
10.1016/j.physletb.2008.08.027
발행일
2008-10-02
유형
Article
저널명
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
668
2
페이지
98 ~ 104