Piscopo, Maria Laura: Higher order corrections to the lifetime of heavy hadrons. 2021
Inhalt
- Abstract
- Zusammenfassung
- Contents
- Introduction
- Notations
- The Theoretical Framework
- The effective weak Hamiltonian
- The heavy quark effective theory
- Expansion of the quark-propagator in the Fock-Schwinger gauge
- The heavy quark expansion
- Practical Calculations within the HQE
- Contribution of the Darwin Operator
- Computation of (2q)(B) up to order 1/mb3
- Operator-mixing at order 1/mb3
- Analytical expressions for the coefficients of the Darwin operator
- Phenomenology of Lifetime and Mixing
- Conclusion
- Acknowledgements
- Expansion of operators containing the heavy quark momentum
- Results for one-loop integrals in dimensional regularisation
- Decomposition of tensor integrals
- Expressions for the coefficients C0(q1 2 q3) and CG, mn(q1 2 q3)
- Expressions for the divergent functions Dmn(q1 2 q3)
- Coefficients of the Darwin operator for the charm system
- Parametrisation of matrix elements of four-quark operators
- Bibliography