Q weak: First direct measurement of the proton's weak charge
Description
The Qweak experiment, which took data at Jefferson Lab in the period 2010 - 2012, will precisely determine the weak charge of the proton by measuring the parity-violating asymmetry in elastic e-p scattering at 1.1 GeV using a longitudinally polarized electron beam and a liquid hydrogen target at a low momentum transfer of Q2 = 0.025 (GeV/c)2. The weak charge of the proton is predicted by the Standard Model and any significant deviation would indicate physics beyond the Standard Model. The technical challenges and experimental apparatus for measuring the weak charge of the proton will be discussed, as well as the method of extracting the weak charge of the proton. Finally, the results from a small subset of the data, that has been published, will also be presented. Furthermore an update will be given of the current status of the data analysis.
Availability note (English)
Available from http://www.osti.gov/pages/servlets/purl/1350092; http://www.osti.gov/pages/biblio/1350092; DOE Accepted Manuscript full text, or the publishers Best Available Version will be available free of charge after the embargo periodAdditional details
Identifiers
Publishing Information
- Journal Title
- EPJ. Web of Conferences
- Journal Volume
- 137
- Journal Page Range
- vp.
- ISSN
- 2100-014X
Conference
- Title
- 12. Quark Confinement and the Hadron Spectrum
- Dates
- 28 Aug - 4 Sep 2016
- Place
- Thessaloniki (Greece)
INIS
- Country of Publication
- France
- Country of Input or Organization
- United States
- INIS RN
- 48058812
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- CEBAF ACCELERATOR; DATA ANALYSIS; ELASTIC SCATTERING; ELECTRON BEAMS; GEV RANGE 01-10; MOMENTUM TRANSFER; PROTONS; STANDARD MODEL
- Descriptors DEC
- ACCELERATORS; BARYONS; BEAMS; DATA PROCESSING; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; FIELD THEORIES; GEV RANGE; GRAND UNIFIED THEORY; HADRONS; LEPTON BEAMS; LINEAR ACCELERATORS; MATHEMATICAL MODELS; NUCLEONS; PARTICLE BEAMS; PARTICLE MODELS; PROCESSING; QUANTUM FIELD THEORY; SCATTERING; UNIFIED GAUGE MODELS
Optional Information
- Contract/Grant/Project number
- AC05-06OR23177
- Collaborations
- Jefferson Lab Qweak Collaboration
- Funding organization
- USDOE Office of Science - SC, Nuclear Physics - NP (SC-26) (United States)
- Secondary number(s)
- JLAB-PHY--16-2377; DOE/OR/23177--4110; OSTIID--1350092