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24 papers · 1 filter
Upper bounds on and from two-point correlation function in QCD
Alexander Khodjamirian
The correlation function of two pseudoscalar charmed quark currents with a positive hadronic spectral density is employed to obtain upper bounds on the decay constants of and $…
Precision Physics with B^0_s -> J/psi phi at the LHC: The Quest for New Physics
Sven Faller, Robert Fleischer, Thomas Mannel
CP-violating effects in the time-dependent angular distribution of the B^0_s -> J/psi[-> ell^+ ell^-] phi[-> K^+K^-] decay products play a key role for the search of new physics. T…
The Golden Modes B^0 -> J/psi K_{S,L} in the Era of Precision Flavour Physics
Sven Faller, Robert Fleischer, Martin Jung +1
The B^0 -> J/ψK_{S,L} channels are outstanding probes of CP violation. We have a detailed look at the associated Standard-Model uncertainties, which are related to doubly Cabibbo-s…
Form Factors from QCD Light-Cone Sum Rules
S. Faller, A. Khodjamirian, Ch. Klein +1
We derive new QCD sum rules for and form factors. The underlying correlation functions are expanded near the light-cone in terms of -meson distribution ampli…
Neutrino-Mass Hierarchies and Non-linear Representation of Lepton-Flavour Symmetry
Th. Feldmann, Th. Mannel
Lepton-flavour symmetry in the Standard Model is broken by small masses for charged leptons and neutrinos. Introducing neutrino masses via dimension-5 operators associated to lepto…
Role of "Intrinsic Charm" in Semi-Leptonic B-Meson Decays
C. Breidenbach, T. Feldmann, T. Mannel +1
We discuss the role of so-called "intrinsic-charm" operators in semi-leptonic B-meson decays, which appear first at order 1/m_b^3 in the heavy quark expansion. We show by explicit…