Artículos de revistas
Measurement of the Lambda(0)(b) lifetime using semileptonic decays
Fecha
2007-11-02Registro en:
Physical Review Letters. College Pk: Amer Physical Soc, v. 99, n. 18, 7 p., 2007.
0031-9007
10.1103/PhysRevLett.99.182001
WOS:000250644000014
WOS000250644000014.pdf
Autor
Joint Inst Nucl Res
Univ Buenos Aires
Centro Brasileiro de Pesquisas Físicas (CBPF)
Universidade do Estado do Rio de Janeiro (UERJ)
Universidade Estadual Paulista (Unesp)
Univ Alberta
Simon Fraser Univ
York Univ
McGill Univ
Univ Sci & Technol China
Universidad de los Andes
Charles Univ Prague
Czech Tech Univ
Acad Sci Czech Republic
Univ San Francisco Quito
Univ Clermont Ferrand
Univ Aix Marseille 2
Univ Paris 11
Lab Accelerateur Lineaire
Univ Paris 06
Univ Paris 07
CEA Saclay
Unit Haute Alsace
Univ Strasbourg 1
Univ Lyon
Univ Lyon 1
RWTH Aachen University
Univ Bonn
Univ Freiburg
Johannes Gutenberg Univ Mainz
Univ Munich
Univ Wuppertal
Panjab Univ
University of Delhi
Tata Inst Fundamental Res
Univ Coll Dublin
Korea University
Sungkyunkwan Univ
CINVESTAV
Univ Amsterdam
FOM
Radboud Univ Nijmegen NIKHEF
Institute for Theoretical and Experimental Physics (ITEP)
Moscow MV Lomonosov State Univ
Inst High Energy Phys
Petersburg Nucl Phys Inst
Stockholm Univ
Royal Inst Technol
Lund Univ
Uppsala Univ
Univ Zurich
University of Lancaster
Univ London Imperial Coll Sci Technol & Med
University of Manchester
University of Arizona
Univ Calif Berkeley
Calif State Univ Fresno
University of California, Riverside (UCR)
Florida State University
Fermilab Natl Accelerator Lab
Univ Illinois
No Illinois Univ
Northwestern University (NU)
Indiana University
Univ Notre Dame
Purdue University Calumet
Iowa State Univ
University of Kansas (KU)
Kansas State University
Louisiana Tech University
University of Maryland
Boston University
Northeastern University
University of Michigan
Michigan State University
University of Mississippi
Univ Nebraska
Princeton University
SUNY Buffalo
Columbia University
University of Rochester
SUNY Stony Brook
Brookhaven Natl Lab
Langston Univ
University of Oklahoma
Oklahoma State Univ
Brown University
Univ Texas
So Methodist Univ
Rice University
University of Virginia (UVA)
University of Washington
Institución
Resumen
We report a measurement of the Lambda(0)(b) lifetime using a sample corresponding to 1.3 fb(-1) of data collected by the D0 experiment in 2002-2006 during run II of the Fermilab Tevatron collider. The Lambda(0)(b) baryon is reconstructed via the decay Lambda(0)(b)->mu(nu) over bar Lambda X-+(c). Using 4437 +/- 329 signal candidates, we measure the Lambda(0)(b) lifetime to be tau(Lambda(0)(b))=1.290(-0.110)(+0.119)(stat)(-0.091)(+0.087)(syst) ps, which is among the most precise measurements in semileptonic Lambda(0)(b) decays. This result is in good agreement with the world average value.