7th LNF Mini-workshop series: JLab at 12 GeV: New opportunities in hadronic physics

Tuesday 18 Dec 2012, 14:00 → 18:00 Europe/Rome

Aula Bruno Touschek (INFN - Laboratori Nazionali di Frascati)

Jefferson Lab is a fundamental research laboratory located in Newport News (Virginia-USA).  Its primary mission is to explore the fundamental nature of confined states of quarks and gluons, including the nucleons that comprise the mass of the visible universe.

It consists of a high-intensity electron accelerator based on continuous wave superconducting radio frequency technology and a sophisticated array of particle detectors. The design features and excellent performance of the accelerator made it possible to plan an upgrade in energy from 6 to 12 GeV without substantially altering the construction scheme of the accelerator. The program includes the construction of major new experimental facilities for the existing three halls, A, B, C and the construction of the new experimental hall D. The project will be completed by the year 2013 and the commissioning of the experimental halls will be extended until the end of 2015.
An overview of the 12 GeV experimental program will be presented. It includes: the study of the nucleon "tomography" through the study of generalized parton distribution functions (GPDS) and transverse momentum dependent parton distribution functions (TMDs), the study of exotics and hybrid mesons to explore the nature of the quarks confinement, precision test of the Standard Model through parity-violating electron scattering experiments.

Slides Locandina

JLab at 12 GeV: New opportunities in hadronic physics

Convener: Dr Patrizia Rossi (Jefferson Lab, USA)

1 Jefferson Lab: Introduction

Speaker: Dr Patrizia Rossi (Jefferson Lab, USA)

2 Exploring the multi-dimensional structure of the proton

The JLab 12 GeV upgrade will achieve unprecedented precision in the study of the partonic structure of the nucleon. This will enable us to derive multi-dimensional images of parton distributions in coordinate and momentum space, including their dependence on spin. I will present an overview of this field of research, focusing on some selected examples and illustrating some possible outcomes.

Speaker: Dr Alessandro Bacchetta (Pavia Univ. & INFN)

3 Advances in Meson Spectroscopy

Recent progress in the application of lattice QCD to meson spectroscopy has lead to a picture of the hadron spectrum in which gluonic excitations play a role. I will present the results of this theoretical work along with the prospects for discovery of a spectrum of 'hybrid mesons' at GlueX and CLAS12.

Speaker: Dr Jozef Dudek (Old Dominion Univ & Jefferson Lab, USA)

Slides Dudek_Meson.pdf

4 Quarks and Gluons in and through the Nucleus

I will discuss how the 12 GeV upgrade at Jefferson Lab can impact our understanding of QCD in the nucleus, focusing in particular on nucleon in-medium modifications, the EMC effect, and quark propagation through cold QCD matter. The possibilities offered by the 12 GeV upgrade at Jefferson Lab will be considered in the context of the recent experimental and theoretical progress, and of the perspectives offered by a future Electron-Ion Collider.

Speaker: Dr Alberto Accardi (Hampton Univ. and Jefferson Lab, USA)

Slides Accardi-Frascati.pdf

5 Precision Measurements at Jefferson Lab: Testing the Standard Model and Exploring Beyond

Jefferson Lab is preparing for several precision experiments that will test the Standard Model and probe for new physics. Many of these experiments will take advantage of the capabilities of the upgraded 12 GeV accelerator. They will probe diverse processes ranging from axial particles to parity-violating electron-electron scattering. I will give an overview of the precision frontier program at Jefferson Lab.

Speaker: Dr Wouter Deconinck (College of William & Mary, USA)

Slides wdeconinck-precision-measurements.pdf

Coffee Break

Coffee Break