Qweak: A Precision Measurement of the Proton's Weak Charge
Creators
- David Armstrong
- Todd Averett
- James Birchall
- James Bowman
- Roger Carlini
- Swapan Chattopadhyay
- Charles Davis
- J. Doornbos
- James Dunne
- Rolf Ent
- Jens Erler
- Willie Falk
- John Finn
- Tony Forest
- David Gaskell
- Klaus Grimm
- C. Hagner
- F. Hersman
- Maurik Holtrop
- Kathleen Johnston
- R.T. Jones
- Kyungseon Joo
- Cynthia Keppel
- Elie Korkmaz
- Stanley Kowalski
- Lawrence Lee
- Allison Lung
- David Mack
- Stanislaw Majewski
- Gregory Mitchell
- Hamlet Mkrtchyan
- Norman Morgan
- Allena Opper
- Shelley Page
- Seppo Penttila
- Mark Pitt
- Benard Poelker
- Tracy Porcelli
- William Ramsay
- Michael Ramsey-musolf
- Julie Roche
- Neven Simicevic
- Gregory Smith
- Riad Suleiman
- Simon Taylor
- Willem Van Oers
- Steven Wells
- W.S. Wilburn
- Stephen Wood
- Carl Zorn
- Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Description
The Qweak experiment at Jefferson Lab aims to make a 4% measurement of the parity-violating asymmetry in elastic scattering at very low Q2 of a longitudinally polarized electron beam on a proton target. The experiment will measure the weak charge of the proton, and thus the weak mixing angle at low energy scale, providing a precision test of the Standard Model. Since the value of the weak mixing angle is approximately 1/4, the weak charge of the proton Qwp = 1-4 sin2 θw is suppressed in the Standard Model, making it especially sensitive to the value of the mixing angle and also to possible new physics. The experiment is approved to run at JLab, and the construction plan calls for the hardware to be ready to install in Hall C in 2007. The theoretical context of the experiment and the status of its design are discussed
Availability note (English)
Available from PURL: https://www.osti.gov/servlets/purl/836895-mpExfY/native/Additional details
Identifiers
Publishing Information
- Imprint Pagination
- 133.6 Kilobytes
- Report number
- JLAB-PHY--03-231
Conference
- Title
- 8. Conference on the Intersections of Particle and Nuclear Physics (CIPANP 2003)
- Dates
- 19-24 May 2003
- Place
- New York, NY (United States)
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 36026587
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Resource subtype / Literary indicator
- Conference, Non-conventional Literature
- Descriptors DEI
- ACCURACY; ASYMMETRY; CONSTRUCTION; DESIGN; ELASTIC SCATTERING; ELECTRON BEAMS; NUCLEAR PHYSICS; PHYSICS; PROTONS; STANDARD MODEL
- Descriptors DEC
- BARYONS; BEAMS; ELEMENTARY PARTICLES; FERMIONS; FIELD THEORIES; GRAND UNIFIED THEORY; HADRONS; LEPTON BEAMS; MATHEMATICAL MODELS; NUCLEONS; PARTICLE BEAMS; PARTICLE MODELS; PHYSICS; QUANTUM FIELD THEORY; SCATTERING; UNIFIED GAUGE MODELS
Optional Information
- Contract/Grant/Project number
- AC05-84ER40150
- Funding organization
- US Department of Energy (United States); USDOE Office of Energy Research ER (United States)
- Secondary number(s)
- DOE/ER--40150-3159; HEP-EX--0308049