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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/24457
Title: 
Combination of t(t)over-bar cross section measurements and constraints on the mass of the top quark and its decays into charged Higgs bosons
Author(s): 
Institution: 
  • Joint Inst Nucl Res
  • Univ Buenos Aires
  • Centro Brasileiro de Pesquisas Físicas (CBPF)
  • Univ Estado Rio de Janeiro
  • Universidade Federal do ABC (UFABC)
  • Universidade Estadual Paulista (UNESP)
  • Univ Alberta
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  • Inst High Energy Phys
  • Petersburg Nucl Phys Inst
  • Stockholm Univ
  • Uppsala Univ
  • University of Lancaster
  • Univ London Imperial Coll Sci Technol & Med
  • University of Manchester
  • University of Arizona
  • University of California, Riverside (UCR)
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  • Florida State University
  • Fermilab Natl Accelerator Lab
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ISSN: 
1550-7998
Abstract: 
We combine measurements of the top quark pair production cross section in p (p) over bar collisions in the l + jets, ll, and tau l final states ( where l is an electron or muon) at a center of mass energy of root s = 1.96 TeV in 1 fb(-1) of data collected with the D0 detector. For a top quark mass of 170 GeV/c(2), we obtain sigma(t (t) over bar) = 8.18(-0.87)(+0.98) pb in agreement with the theoretical prediction. Based on predictions from higher order quantum chromodynamics, we extract a mass for the top quark from the combined t (t) over bar cross section, consistent with the world average of the top quark mass. In addition, the ratios of t (t) over bar cross sections in different final states are used to set upper limits on the branching fractions B(t -> H(+)b -> tau(+) vb) and B(t -> H(+)b -> c (s) over barb) as a function of the charged Higgs boson mass.
Issue Date: 
1-Oct-2009
Citation: 
Physical Review D. College Pk: Amer Physical Soc, v. 80, n. 7, p. 8, 2009.
Time Duration: 
8
Publisher: 
Amer Physical Soc
Source: 
http://dx.doi.org/10.1103/PhysRevD.80.071102
URI: 
http://hdl.handle.net/11449/24457
Access Rights: 
Acesso restrito
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/24457
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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