Quark Confinement and the Hadron Spectrum XI

Session

Parallel II: B8 Light Quarks

2

11 Sept 2014, 16:30

St. Petersburg

Conveners

Parallel II: B8 Light Quarks

• Hagop Sazdjian (University Paris-Sud)

165. Dispersive representation of the Kpi and pipi form factors: application to hadronic tau decays

Emilie Passemar (Indiana University/JLab)

11/09/2014, 16:30

Section B: Light Quarks

In this talk, we review the recent theoretical progress towards a precise determination of some hadronic observables such as the Kpi and pipi form factors. We show that significant improvement can be achieved by combining dispersive techniques with chiral perturbation theory calculations, lattice results and experimental measurements. We will then present two applications for precise tests of...

88. Amplitude Analysis in Lights Hadron Spectroscopy

Vincent Mathieu (Indiana university)

11/09/2014, 17:00

Section B: Light Quarks

I give an overview of the Jefferson Lab Physics Analysis Center (JPAC) activities. JPAC is a join center between Indiana University and the Jefferson Laboratory. We provide theoretical tools for data analysis in hadron spectroscopy. In this talk, I will present the following topics: - Dalitz plot analysis of eta-> 3pi and omega-> 3pi - omega -> pi gamma transition form factor -...

1. Hadronic effects within dispersive approach to QCD: tau lepton decay and vacuum polarization function

Dr Alexander Nesterenko (Joint Institute for Nuclear Research)

11/09/2014, 17:30

Section B: Light Quarks

The dispersive approach to QCD, which extends the applicability range of perturbation theory towards the infrared domain, is developed. This approach properly accounts for the intrinsically nonperturbative constraints, which originate in the low-energy kinematic restrictions on pertinent strong interaction processes. The dispersive approach proves to be capable of describing recently...

210. Does Confinement Influence High Energy Scattering?

Prof. Vladimir Petrov (IHEP)

11/09/2014, 17:50

Section B: Light Quarks

Formulation of confinement is discussed in the framework of general principles of q.f.t. Characteristic space-time scales which define the bulk of high-energy hadron scattering are derived.

103. The lightest scalar-isoscalar meson, its history, new parameters and role in QCD

Dr Robert Kaminski (Institute of Nuclear Physics PAN, Krakow, Poland)

11/09/2014, 18:10

Section B: Light Quarks

Recently reparameterized $f_0(500)$ (former $\sigma$) meson became subject of a number of innovative works in QCD physics. Difficult to find and to determine experimentally after many years of failures has been finally precisely described be means of theoretical dispersion relations with imposed crossing symmetry condition [1,2]. Its fundamental importance for low energy QCD opened up the...