Conveners
Parallel III: C6 Heavy Quarks: Dipole moments and Transitions, Poincare Invariance, Potential Model, Holographic Spectrum
- Joan Soto (Universitat de Barcelona)
Antonio Pineda
(Universitat Autonoma de Barcelona)
9/12/14, 2:19 PM
Section C: Heavy Quarks
We compute the magnetic dipole transitions between low lying Heavy Quarkonium states in a model independent way. We use the weak-coupling version of the effective field theory named potential NRQCD with the static potential exactly incorporated in the leading order Hamiltonian. The convergence for the b-\bar b ground state is quite good, and also quite reasonable for the c-\bar c ground state...
Mr
Hector Martinez
(TU Munich)
9/12/14, 2:43 PM
Section C: Heavy Quarks
We use the complete expression for the $\mathcal{O}(1/m^2)$ corrections to the quark-antiquark potential derived from QCD in terms of Wilson loop expectation values, and a mapping, valid at large distances, between those Wilson loop expectation values and correlators evaluated in the effective string theory (EST), to compute all $\mathcal{O}(1/m^2)$ potentials at large distances. In...
Mr
Sungmin Hwang
(Technical University of Munich)
9/12/14, 3:02 PM
Section C: Heavy Quarks
Potential non-relativistic QCD (pNRQCD) is an effective field theory that describes heavy quarkonia at the ultrasoft scale, i.e. at the scale of the binding energy. As a non-relativistic theory, full Poincaré invariance is no longer explicit in pNRQCD. However, since pNRQCD is ultimately derived from QCD, Poincaré invariance is still hidden in the theory, with the effect that the Wilson...
Prof.
Pedro Gonzalez
(Universitat de Valencia)
9/12/14, 3:21 PM
Section C: Heavy Quarks
From lattice results a new non relativistic quark model to calculate the spectrum of heavy quark mesons has been developed. Te model interaction is generated from the identification of E(r), the energy of two static color sources, Q and antiQ, in terms of the Q-antiQ distance, calculated in the lattice, with the sum of the masses of the Quark (m_{Q}) and the antiQuark (m_{antiQ}) plus the...
Ilya Pusenkov
(SPbSU)
9/12/14, 3:40 PM
Section C: Heavy Quarks
The spectrum of radially excited unflavored vector mesons is relatively well measured, especially in the heavy-quark sector. This provides a unique opportunity to observe the behavior of the hadron spectrum at fixed quantum numbers as a function of the quark mass. The experimental data suggests the approximately Regge form for the radial spectrum, $M_n^2 = An+B$, where A and B are growing...
