Published February 20, 2009 | Version v1
Journal article Metadata-only

Next-to-Leading-Order QCD Corrections to the Top-Quark Decay via Model-Independent Flavor-Changing Neutral-Current Couplings

Creators

  • 1. Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwan (China)
  • 2. Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824-1116 (United States)
  • 3. Department of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871 (China)

Description

D0 and CDF collaborations at the Fermilab Tevatron have searched for nonstandard-model single top-quark production and have set upper limits on the anomalous top-quark flavor-changing neutral-current (FCNC) couplings κtcg/Λ and κtug/Λ using the measurement of the total cross section calculated at the next-to-leading order (NLO) in QCD. In this Letter, we report on the effect of anomalous FCNC couplings to various decay branching ratios of the top quark, calculated at the NLO. This result is not only mandatory for a consistent treatment of both the top-quark production and decay via FCNC couplings by D0 and CDF at the Tevatron, but is also important for the study of ATLAS and CMS sensitivity to these anomalous couplings at the CERN LHC

Additional details

Identifiers

DOI
10.1103/PhysRevLett.102.072001;
arXiv
arXiv:0810.3889v4;

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
102
Journal Issue
7
Journal Page Range
p. 072001-072001.4
ISSN
0031-9007
CODEN
PRLTAO

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
40054421
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
BRANCHING RATIO; CERN LHC; FERMILAB COLLIDER DETECTOR; FERMILAB TEVATRON; FLAVOR MODEL; NEUTRAL CURRENTS; PARTICLE DECAY; QUANTUM CHROMODYNAMICS; T QUARKS; TOTAL CROSS SECTIONS
Descriptors DEC
ACCELERATORS; ALGEBRAIC CURRENTS; COMPOSITE MODELS; CROSS SECTIONS; CURRENTS; CYCLIC ACCELERATORS; DECAY; DIMENSIONLESS NUMBERS; ELEMENTARY PARTICLES; FERMIONS; FIELD THEORIES; MATHEMATICAL MODELS; MEASURING INSTRUMENTS; PARTICLE MODELS; POSTULATED PARTICLES; QUANTUM FIELD THEORY; QUARK MODEL; QUARKS; RADIATION DETECTORS; STORAGE RINGS; SYNCHROTRONS; TOP PARTICLES

Optional Information

Notes
(c) 2009 The American Physical Society