Kox / Lhuillier / Maas From Parity Violation to Hadronic Structure and more

Refereed and selected contributions, Grenoble, France, June 8-11, 2004
1. Auflage 2007
ISBN: 978-3-540-26345-6
Verlag: Springer Berlin Heidelberg
Format: PDF
Kopierschutz: 1 - PDF Watermark

E-Book, Englisch, 208 Seiten

Almost 50 years after the proposal of Lee and Young in 1956 to test the hypothesis of parity violation in weak interactions and the subsequent experimental verification of parity violation by C. S. Wu, parity violation has today become a useful property of weak interactions. This is due to the fact that the focus nowadays has changed: parity violation in weak interactions is no more a topic of investigation but is used as a tool in many different fields ranging from nuclear physics to the search for the hidden extra dimensions requested by string theory. For our first workshop which took place June 5-8, 2002, at the Institut fiir Ke- physik of the Johannes Gutenberg-Universitat Mainz, we concentrated on the in­ vestigation of the strangeness contribution in the nucleon. This book contains the refereed and selected papers of the second workshop 'From Parity Violation to Hadron Structure and more (Part II)', which took place June 8-11, in the Labo- toire de Physique Subatomique et de Cosmologie, in Grenoble. These papers appear in EPJAdirect, the electronic-only part of EPJA, and they are accessible without restrictions. They will also appear in printed form and can be ordered through Springer. The excellent presentations show the dramatic and steady progress in the accuracy of measured parity violating asymmetries over the last few years.

Autoren/Hrsg.

Kox, Serge

Lhuillier, David

Maas, Frank

Wiele, Jacques van de

Inhaltsverzeichnis

1;Foreword;5
2;Contents;7
3;List of Participants;10
4;Sponsors;15
5;I Introductory talks;16
5.1;Today's view on strangeness;17
5.2;Strange and gluonic contributions to the nucleon spin;25
6;II Form factors and two- photon effects;29
6.1;Electromagnetic form factors of the nucleon;30
6.2;Two photon effects in electron scattering;35
6.3;Single spin asymmetries in elastic electron- nucleon scattering;40
6.4;Transverse single spin asymmetry in elastic electron- proton scattering;44
6.5;Transverse spin asymmetry at the A4 experiment;46
6.6;Normal beam spin asymmetries during the G° forward angle measurement;50
7;Ill Weak form factors of the nucleon;52
7.1;III- 1 PV experiment;52
7.1.1;The axial form factor of the nucleon;53
7.1.2;Parity violating electron scattering at the MAM I facility in Mainz;57
7.1.3;Updated results from the SAMPLE experiment;61
7.1.4;The next generation HAPPEX experiments;65
7.1.5;The GO experiment: Parity violation in e- N elastic scattering;69
7.1.6;Study of the parity violation in the ^( 1232) region;74
7.1.7;Don't forget to measure As;75
7.2;III- 2 Theory;79
7.2.1;Getting to grips with hadrons;80
7.2.2;Systematic uncertainties in the precise determination of the strangeness magnetic moment of the nucleon;86
7.2.3;Current status of parton charge symmetry;92
7.2.4;Pion- nucleon interaction and the strangeness content of the nucleon;96
7.2.5;Strange form factors of the nucleon in the chiral quark- soliton model;100
7.2.6;Strange form factors and Chiral Perturbation Theory;104
7.2.7;Time- like compton scattering and the Bethe- Heitler process;108
7.2.8;Corrections to the nuclear axial vector coupling in a nuclear medium;110
7.2.9;Strangeness- conserving effective weak chiral Lagrangian;111
8;IV Experimental techniques in PV electron scattering;112
8.1;IV-1 Beam asymmetry;112
8.1.1;Overview of laser systematics;113
8.1.2;Beam optics for electron scattering parity- violation experiments;119
8.1.3;GO beam quality and multiple linear regression corrections;123
8.2;IV-2 Polarimetry;125
8.2.1;M0ller polarimetry with atomic hydrogen targets;126
8.2.2;Progress report on the A4 Compton backscattering polarimeter;130
8.2.3;The transmission Compton polarimeter of the A4 experiment;132
8.2.4;Stabilization system of the laser system of the A4 Compton backscattering polarimeter;134
8.2.5;Electron beam line design of A4 Compton backscattering polarimeter;135
8.3;IV-3 Detection;136
8.3.1;Background substraction in parity violation experiments;137
8.3.2;Redesign of the A4 calorimeter for the measurement at backward angles;141
8.3.3;Performance of the G° superconducting magnet system;142
8.3.4;Cherenkov counter for the G° backward angle measurements;143
8.3.5;A bin- per- bin dead- time control technique for time- of- flight measurements in the G° experiment: The differential buddy;144
9;V Hadronic structure... and more;145
9.1;V- 1 Test of the SM at low energy;145
9.1.1;A precise measurement of sin2Ow at low Q2 in M0ller scattering;146
9.1.2;Qweak: A precision measurement of the proton's weak charge;150
9.1.3;The Qweak tracking system;154
9.1.4;Neutral currents and strangeness of the nucleon from the NuTeV experiment;156
9.2;V-2 PV in nuclear systems;160
9.2.1;Parity violation in astrophysics;161
9.2.2;Parity violation in nuclear systems;165
9.2.3;Parity violation in nuclear systems;169
9.2.4;Parity violating asymmetry in y + d - n + p at low energy;173
9.3;\/-3 Neutrino beam;175
9.3.1;Precision physics at a neutrino factory;176
9.3.2;The MINERvA experiment at FNAL;180
10;VI Concluding talks;181
10.1;Frontiers of polarized electron scattering experiments;182
10.2;Parity- violation with electrons: Theoretical perspectives;187
10.3;Workshop summary;195