Artículos de revistas
First study of the radiation-amplitude zero in W gamma production and limits on anomalous WW gamma couplings at root s=1.96 TeV
Fecha
2008-06-20Registro en:
Physical Review Letters, v. 100, n. 24, 2008.
0031-9007
1079-7114
10.1103/PhysRevLett.100.241805
2-s2.0-45749153803
2-s2.0-45749153803.pdf
Autor
Universidad de Buenos Aires
Centro Brasileiro de Pesquisas Físicas (CBPF)
Universidade do Estado do Rio de Janeiro (UERJ)
Universidade Federal do ABC (UFABC)
Universidade Estadual Paulista (Unesp)
University of Alberta
University of Science and Technology of China
Universidad de los Andes
Charles University
Czech Technical University
Academy of Sciences of the Czech Republic
Universidad San Francisco de Quito
CNRS/IN2P3
Institut National Polytechnique de Grenoble
Université de la Méditerranée
IN2P3/CNRS
Universités Paris VI and VII
CEA
RWTH Aachen University
Universität Bonn
Universität Freiburg
Universität Mainz
Ludwig-Maximilians-Universität München
University of Wuppertal
Panjab University
Delhi University
Tata Institute of Fundamental Research
University College Dublin
Korea University
SungKyunKwan University
CINVESTAV
University of Amsterdam/NIKHEF
Radboud University Nijmegen/NIKHEF
Joint Institute for Nuclear Research
Institute for Theoretical and Experimental Physics (ITEP)
Moscow State University
Institute for High Energy Physics
Petersburg Nuclear Physics Institute
Lund University
Lancaster University
Imperial College
University of Manchester
University of Arizona
University of California
California State University
Florida State University
Fermi National Accelerator Laboratory
University of Illinois at Chicago
Northern Illinois University
Northwestern University (NU)
Indiana University
University of Notre Dame
Purdue University Calumet
Iowa State University
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
University of Nebraska
Princeton University
State University of New York
Columbia University
University of Rochester
Brookhaven National Laboratory
Langston University
University of Oklahoma
Oklahoma State University
Brown University
University of Texas
Southern Methodist University
Rice University
University of Virginia (UVA)
University of Washington
Augustana College
University of Liverpool
ICN-UNAM
Georg-August-University
Helsinki Institute of Physics
Universität Zürich
Institución
Resumen
We present results from a study of pp̄→Wγ+X events utilizing data corresponding to 0.7fb-1 of integrated luminosity at s=1.96TeV collected by the D0 detector at the Fermilab Tevatron Collider. We set limits on anomalous WWγ couplings at the 95% C.L. The one-dimensional 95% C.L. limits are 0.49<κγ<1.51 and -0.12<λγ<0.13. We make the first study of the charge-signed rapidity difference between the lepton and the photon and find it to be indicative of the standard model radiation-amplitude zero in the Wγ system. © 2008 The American Physical Society.