SCADRON70: Workshop on Scalar Mesons and Related Topics Honoring Michael D. Scadron's 70th Birthday, IST, Lisbon, Portugal, 11-16 February 2008

by Rupp, George; Kleefeld, Frieder; Van Beveren, Eef; Hiller, Brigitte; Bicudo, Pedro

• ISBN13: 9780735405547
• ISBN10: 0735405549
• Format: Hardcover
• Copyright: 2008-08-22
• Publisher: Amer Inst of Physics

Summary

The light scalar mesons have been posing serious problems to both theorists and experimentalists. Even nowadays there is no consensus whatsoever on the quark structure of these hadronic resonances, some of which are very broad. Nevertheless, the light scalars are of tremendous importance for a better understanding of QCD and strong interactions, with far-reaching implications for nuclear physics as well. The SCADRON70 Workshop managed to bring together many of the leading experts in the field, with invited talks of spokespersons of practically all major experimental collaborations in particle and hadronic physics, besides invited talks given by some renowned theorists. Simultaneously, the Workshop allowed to honor one of the pioneers of scalar mesons, viz. Prof. Michael D. Scadron, at the occasion of his 70th birthday.

Table of Contents

Review of Scalar Mesons	p. 3
Scalar Field and QCD Constraints in Nuclear Physics	p. 13
Chiral Shielding Revisited	p. 23
Scalar Mesons in Charm Decays	p. 30
The Light Scalar Mesons at a[subscript 0]/f[subscript 0](980) at COSY-Julich	p. 40
Model Independent Determination of the [sigma] Pole	p. 46
0[superscript ++] Resonances Observed at BES	p. 56
Heavy Flavor Decays and Light Hadrons in the FOCUS Experiment: Recent Results	p. 64
Charm Meson Spectroscopy at BELLE	p. 74
Light Scalar Mesons at KLOE	p. 84
New (and Old) Perspectives on Higgs Physics	p. 94
Dynamical Properties of the [sigma] Meson	p. 107
f[subscript 0](980) and a[subscript 0](980) and as Hadronic Molecules	p. 112
Hadronic Molecules and the f[subscript 0](980)/a[subscript 0](980)	p. 118
Radiative Decays with a[subscript 0](980) and f[subscript 0](980) from ChPT at Order p[superscript 4]	p. 123
Scalar Mesons and Polarizability of the Nucleon	p. 129
Alpha-Alpha Scattering, Chiral Symmetry and [superscript 8]Be Lifetime	p. 135
Screening in the Bremsstrahlung Reactions and Determination of the Magnetic Moment of the [Delta] Resonance	p. 141
S-Wave and [gamma][gamma] [approaches] [pi][pi] and f[subscript 0](980) [approaches] [pi][pi]	p. 147
Two-Photon Decay of a Light Scalar Quark-Antiquark State	p. 153
How Universal is the Coupling in the Sigma Model?	p. 160
Coulomb Gauge Approach to Scalar Hadrons	p. 165
Franck-Condon Principle for Heavy-Quark Hadron Decays	p. 171
Scalar Mesons within QCD Sum Rules in the Planar Limit	p. 177
Scalar Mesons, Multiquark States and Supersymmetry	p. 184
Charmed Scalar Resonances	p. 190
Recent Issues in Heavy-Light Meson Spectroscopy	p. 196
Spectrum and Decays of S-Wave Tetraquarks from Chromomagnetism with Flavour Symmetry Breaking	p. 202
Searching for the Scalar Glueball	p. 207
Viable Semi-Relativistic Quark Model of Heavy-Light Systems	p. 213
The Spectrum of Scalar-Meson Nonets in the Resonance-Spectrum Expansion	p. 219
On the Determination of [sigma] from Experimental Data on the [pi][pi] Isoscalar S-Wave at Low Energies	p. 226
Non-Standard Symmetries and Quantum Anomalies	p. 232
New Formula for a Resonant Scattering Near an Inelastic Threshold	p. 238
Quantum Reflection of S-Wave Unstable States	p. 244
Long Tail of [pi][pi] Quantum Decay from Scattering Data	p. 250
Precise Analysis of [pi][pi] Scattering Data from Roy Equations and forward Dispersion Relations	p. 257
Precise Determination of the Sigma Pole Location from a Dispersive Analysis	p. 263
Chiral Extrapolation of the [sigma] and [rho] Mesons from Dispersion Relations and Chiral Perturbation Theory	p. 268
Spectrum of Higgsonium in the SM and Beyond	p. 274
Effects of Pions in Cosmic Rays	p. 280
Generalized Parton Distributions of the Pion	p. 286
NJL with Eight Quark Interactions: Chiral Phases at Finite T	p. 292
Parity Doublers and Topology Twists in Hadrons	p. 298
Challenges of Lattice Calculation of Scalar Mesons	p. 305
Simulations of Light Scalar Mesons on the Lattice and Related Difficulties	p. 311
S-Wave Meson Scattering up to 2 GeV and Its Spectroscopy	p. 317
The Role of Scalar Mesons in Extended Perturbation Scheme for Effective Field Theory	p. 323
Hierarchy of Scales in B [approaches] PS Decays	p. 328
Scalar Meson Mass from Renormalized One Boson Exchange Potentials	p. 334
D[superscript +] [approaches] K[superscript -] [pi][superscript +][pi][superscript +]: The Low-Energy Sector	p. 340
Dynamics Study of Z[superscript +](4430) and X(3872) in Molecular Picture	p. 346
Microscopic Calculation of the Decay of Jaffe-Wilczek Tetraquarks, and the Z(4433)	p. 352
Chiral Symmetry Breaking Beyond BCS and Theorem on the Width of Scalars	p. 357
The e[superscript +]e[superscript -] [approaches] J/[psi]DD, J/[psi]DD Reactions with Dynamically Generated Resonances	p. 363
Update of [eta]-[eta]' Mixing from J/[psi] [approaches] VP Decays	p. 368
Panel Discussion on Scalar Mesons	p. 377
Panel Discussion on Scalar Mesons: Points across the Round Table	p. 379
Panel Discussion on Scalar Mesons	p. 381
Panel Discussion on Scalar Mesons	p. 383
Panel Discussion on Scalar Mesons: Tightly Bound qq Pion and Barely Bound qq [sigma]	p. 385
Panel Discussion on Scalar Mesons: Plenary Session	p. 387
Exploring the Mixing of Scalar Mesons below 2 GeV	p. 395
Production Amplitude for a Single Scalar Resonance	p. 403
Resonance Sum Rules from Large N[subscript C] and Partial Wave Dispersive Analysis	p. 408
On the Dynamical Generation of Quark-Level-Linear-Sigma-Model- like Theories beyond One Loop	p. 412
Unitarized Amplitude for Two Coupled Scalar Resonances	p. 416
Sigma Term of the Sigma: A Preliminary Study	p. 420
Positive Parity Heavy Mesons in Heavy Meson Chiral Perturbation Theory	p. 427
Cabibbo Favored and Suppressed Exclusive Non-Leptonic CharmBaryon Decays	p. 428
The Role of E791	p. 429
Charm Meson Spectroscopy at BABAR	p. 430
On Prospects and Dangers Arising from Borders of Analytical Mastery in Exploring Scalar Mesons - within QCD	p. 431
Theoretical Study of e[superscript +]e[superscript -] [approaches] [phi] PP and the New Resonance Y(2175)	p. 432
Workshop Program	p. 433
List of Participants	p. 441
Author Index	p. 455
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