Artículos de revistas
Measurement of sigma(p(p)over-bar -> Z)center dot Br(Z ->tau tau) at root s=1.96 TeV
Fecha
2005-04-01Registro en:
Physical Review D. College Pk: American Physical Soc, v. 71, n. 7, 7 p., 2005.
0556-2821
10.1103/PhysRevD.71.072004
WOS:000228765400010
WOS000228765400010.pdf
Autor
Joint Nucl Res Inst
University of Oklahoma
Michigan State University
Tata Inst Fundamental Res
Univ Illinois
Florida State University
CEA Saclay
Univ Louis Pasteur Strasbourg 1
Univ Haute Alsace
Korea University
Kansas State University
Petersburg Nucl Phys Inst
University of Michigan
Northeastern University
Centro Brasileiro de Pesquisas Físicas (CBPF)
Univ Nijmegen
Northwestern University (NU)
University of Arizona
Univ Paris 06
Univ Paris 07
Univ Grenoble 1
Rice University
Lund Univ
Royal Inst Technol
Stockholm Univ
Uppsala Univ
Iowa State Univ
RWTH Aachen University
Universidad de los Andes
Univ Clermont Ferrand
University of Maryland
Fermilab Natl Accelerator Lab
FOM
Univ Amsterdam
University of Kansas (KU)
Univ London Imperial Coll Sci Technol & Med
Indiana University
University of Rochester
Univ Nebraska
Punjabi Univ
University of Lancaster
Inst High Energy Phys
Univ Munich
Boston University
No Illinois Univ
Univ Freiburg
Univ Notre Dame
Columbia University
Univ Texas
University of Washington
Universidade do Estado do Rio de Janeiro (UERJ)
Brown University
CINVESTAV
University of California, Riverside (UCR)
University of Delhi
Univ Alberta
Simon Fraser Univ
York Univ
McGill Univ
Univ Mediterranee
University of Manchester
SUNY Stony Brook
Moscow MV Lomonosov State Univ
CNRS
Institute for Theoretical and Experimental Physics (ITEP)
Princeton University
Univ Bonn
Louisiana Tech University
Universidade Estadual Paulista (Unesp)
Univ Coll Dublin
Calif State Univ Fresno
University of Virginia (UVA)
Univ San Francisco Quito
Univ Mainz
Brookhaven Natl Lab
So Methodist Univ
Acad Sci Czech Republ
Univ Lyon 1
Lawrence Berkeley Lab
Univ Calif Berkeley
Univ Wuppertal
Acad Sinica
University of Mississippi
Univ Buenos Aires
Czech Tech Univ
Langston Univ
Charles Univ
Institución
Resumen
We present a measurement of the cross section for Z production times the branching fraction to tau leptons, sigma.Br(Z ->tau(+)tau(-)), in p (p) over bar collisions at root s=1.96 TeV in the channel in which one tau decays into mu nu(mu)nu(tau), and the other into hadrons+nu(tau) or e nu(e)nu(tau). The data sample corresponds to an integrated luminosity of 226 pb(-1) collected with the D0 detector at the Fermilab Tevatron collider. The final sample contains 2008 candidate events with an estimated background of 55%. From this we obtain sigma.Br(Z ->tau(+)tau(-)) = 237 +/- 15(stat)+/- 18(sys)+/- 15(lum)pb, in agreement with the standard model prediction.