Head of the research group: | |

Last name: | Lucha | |

First name(s): | Wolfgang | |

Title (leading): | Univ.-Doz. Dr. | |

Position: | Projektleiter | |

Institution: | |

Institution: | Austrian Academy of Sciences | |

Organizational unit: | Institut für Hochenergiephysik (HEPHY) | |

Street address: | Nikolsdorfer Gasse 18 | |

Postal code: | 1050 | |

City: | Wien | |

Mail: | Wolfgang.Lucha(at)oeaw.ac.at | |

Homepage: | http://www.hephy.at/ | |

Assignments to Research Areas: | |

Research area(s): |
- High Energy Physics
- Nuclear and Particle Physics
- Theoretical Physics
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Assignments to Fields of Work According to the Austrian System of Science Areas: | |

Field(s) of work: |
- High energy physics (103012)
- Particle physics (103034)
- Theoretical physics (103036)
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Data Acquisition: | |

Date of the data acquisition: | 31.05.2012 | |

Data acquisition period: | from: 2007 up to including: 2011 | |

Research Group at the Time of the Data Acquisition: | |

Scientific group members: 2 Persons | Wolfgang Lucha
Dmitri Melikhov
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Full-time equivalents: | 1.9 | |

Percentage project-funded: | 50 | |

Scientific Output in the Above Data Acquisition Period: | |

H-index of the group head: | 23 | |

Number of publications: | 31 | |

Five most important publications: |
- W. Lucha, D. Melikhov, and S. Simula, "Decay Constants of Heavy Pseudoscalar Mesons from QCD Sum Rules", J. Phys. G: Nucl. Part. Phys. 38 (2011) 105002.
- W. Lucha, D. Melikhov, and S. Simula, "Effective Continuum Threshold in Dispersive Sum Rules",
Phys. Rev. D 79 (2009) 096011.
- R. L. Hall and W. Lucha, "Semirelativistic Stability of N-Boson Systems Bound by 1/rij Pair Potentials",
J. Phys. A: Math. Theor. 41 (2008) 355202.
- Z.-F. Li, W. Lucha, and F. F. Schöberl, "Stability in the Instantaneous Bethe-Salpeter Formalism: Harmonic-Oscillator Reduced Salpeter Equation", Phys. Rev. D 76 (2007) 125028.
- W. Lucha, D. Melikhov, and S. Simula, "Heavy-to-Light Form Factors: Sum Rules on the Light Cone and Beyond", Phys. Rev. D 75 (2007) 096002.
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Five most important talks: |
- D. Melikhov, "Decay constants of heavy mesons from QCD sum rules",
ICHEP 2010, Paris, France (Jul 22-28, 2010).
- D. Melikhov, "Systematic errors of transition form factors extracted by means of light-cone sum rules", XII International Conference on Hadron Spectroscopy - Hadron 07, LNF, Frascati, Italy ( Oct 8-13, 2007).
- D. Melikhov, "Systematic errors of bound-state parameters obtained with SVZ sum rules",
QCD@WORK 2007: International Workshop on Quantum Chromodynamics: Theory and Experiment,
Martina Franca, Italy (Jun 16-20, 2007).
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Projects and Funding Granted in the Above Data Acquisition Period: | |

Competitive projects: |
- FWF:
Nonperturbative QCD in Heavy-Quark Systems
01. 05. 2005 - 16. 04. 2008
- FWF:
Beauty and Charm Hadrons and Their Decays
01. 01. 2008 - 31. 12. 2010
- FWF:
Hadron Properties from QCD Sum Rules
01. 01. 2011 - 31. 12. 2012
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Research Topics: | |

Current research topics: |
- Relativistic Bound-State Equations:
Goal: quantum-field-theoretic description of (primarily hadronic) bound states by various simplifications of the Bethe-Salpeter formalism - such as the instantaneous approximation yielding generalized versions of the Salpeter equation. Here, a longstanding issue is the correct implementation of confinement.
- QCD Sum Rules:
The idea behind the QCD sum-rule approach is to provide analytic translations of QCD results obtained from the fundamental degrees of freedom (quarks and gluons) to the experimentally accessible hadronic bound states. We are constructing a new and improved sum-rule formalism that should yield both more accurate predictions and reliable error estimates.
- Exact Bounds for Semirelativistic Systems:
Goal: derivation of mathematically rigorous and to the utmost conceivable extent (semi-) analytic statements about various physical systems described by (semi-) relativistic equations of motion. For instance, having exact bounds to energy levels at one´s disposal allows for an unambiguous assessment of the validity of models.
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Future topics (next 5 years): |
- QCD bound states
- Hadron phenomenology
- Quark-gluon plasma
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Teaching and Research Mobility in the Above Data Acquisition Period: | |

International networking: |
- Relativistic Bound-State Equations (collaboration with 5 institutions)
- QCD Sum Rules (collaboration with 5 institutions)
- Exact Bounds (collaboration with 1 institution)
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