In-medium hadron modification and meson spectroscopy

Conference · Thu Apr 01 04:00:00 EDT 2010 · Proceedings of Science

OSTI ID:1001205

Chaden Djalali, Dennis Weygand ^[1]

---

1. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

The theory of the strong interaction, Quantum Chromodynamics (QCD), has been remarkably successful in describing high-energy and short-distance-scale experiments involving quarks and gluons. However, applying QCD to low energy and large-distance-scale experiments has been a major challenge. At low energies, standard nuclear physics with nucleon and meson degrees of freedom work effectively in describing observations. The transition between the two descriptions of hadrons is one of the main goals of hadronic physics. Lattice QCD calculations have made tremendous progress and will one day give us a full description of strong interactions under all regimes. Meanwhile, effective theories incorporating some of the main features of QCD have been successfully developed and help us gain insight into the non-perturbative regime of QCD. All these models predict modifications of the properties of hadrons embedded in nuclear matter. Mesons with exotic quantum numbers are predicted at excitation energies below 2 GeV. Several experiments have been conducted with the Cebaf Large Acceptance Spectrometer (CLAS) at the Thomas Jefferson National Laboratory (JLab) to test these predictions.

• Research Organization: Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1001205
• Report Number(s): JLAB-PHY--10-1207; DOE/OR/23177--1385
• Conference Information: Journal Name: Proceedings of Science Journal Volume: DIS 2010
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
DEEP INELASTIC SCATTERING
DEGREES OF FREEDOM
EXCITATION
GLUONS
HADRONS
MESON SPECTROSCOPY
MESONS
MODIFICATIONS
NUCLEAR MATTER
NUCLEAR PHYSICS
NUCLEONS
PHYSICS
QUANTUM CHROMODYNAMICS
QUANTUM NUMBERS
QUARKS
SPECTROMETERS
STRONG INTERACTIONS