Measurement of the weak nucleon-nucleon interaction by polarized cold neutron capture on protons
The NPDGamma Experiment at the Spallation Neutron Source at Oak Ridge National Laboratory is measuring the parity-odd correlation between the neutron spin and the direction of the emitted photon in the capture of polarized cold neutrons on protons. A parity violating asymmetry from this process is d...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2014-03-01
|
| Series: | EPJ Web of Conferences |
| Online Access: | http://dx.doi.org/10.1051/epjconf/20146605001 |
| _version_ | 1819280082289557504 |
|---|---|
| author | Alarcon R. Blyth D. |
| author_facet | Alarcon R. Blyth D. |
| author_sort | Alarcon R. |
| collection | DOAJ |
| description | The NPDGamma Experiment at the Spallation Neutron Source at Oak Ridge National Laboratory is measuring the parity-odd correlation between the neutron spin and the direction of the emitted photon in the capture of polarized cold neutrons on protons. A parity violating asymmetry from this process is directly related to the strength of the hadronic weak interaction between nucleons. The experiment was run first with heavier nuclear targets to check systematic effects, false asymmetries, and backgrounds. Since early 2012 the experiment has been collecting data with a 16-liter liquid parahydrogen target. Data taking will continue through 2013 until statistics for a 10−8 asymmetry measurement are expected. The experiment performance will be discussed as well as the status of the asymmetry measurements. |
| first_indexed | 2024-12-24T00:38:08Z |
| format | Article |
| id | doaj.art-42feffc644284949b77658cecebcf61c |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-24T00:38:08Z |
| publishDate | 2014-03-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-42feffc644284949b77658cecebcf61c2022-12-21T17:24:02ZengEDP SciencesEPJ Web of Conferences2100-014X2014-03-01660500110.1051/epjconf/20146605001epjconf_inpc2013_05001Measurement of the weak nucleon-nucleon interaction by polarized cold neutron capture on protonsAlarcon R.0Blyth D.1Department of Physics, Arizona State UniversityDepartment of Physics, Arizona State UniversityThe NPDGamma Experiment at the Spallation Neutron Source at Oak Ridge National Laboratory is measuring the parity-odd correlation between the neutron spin and the direction of the emitted photon in the capture of polarized cold neutrons on protons. A parity violating asymmetry from this process is directly related to the strength of the hadronic weak interaction between nucleons. The experiment was run first with heavier nuclear targets to check systematic effects, false asymmetries, and backgrounds. Since early 2012 the experiment has been collecting data with a 16-liter liquid parahydrogen target. Data taking will continue through 2013 until statistics for a 10−8 asymmetry measurement are expected. The experiment performance will be discussed as well as the status of the asymmetry measurements.http://dx.doi.org/10.1051/epjconf/20146605001 |
| spellingShingle | Alarcon R. Blyth D. Measurement of the weak nucleon-nucleon interaction by polarized cold neutron capture on protons EPJ Web of Conferences |
| title | Measurement of the weak nucleon-nucleon interaction by polarized cold neutron capture on protons |
| title_full | Measurement of the weak nucleon-nucleon interaction by polarized cold neutron capture on protons |
| title_fullStr | Measurement of the weak nucleon-nucleon interaction by polarized cold neutron capture on protons |
| title_full_unstemmed | Measurement of the weak nucleon-nucleon interaction by polarized cold neutron capture on protons |
| title_short | Measurement of the weak nucleon-nucleon interaction by polarized cold neutron capture on protons |
| title_sort | measurement of the weak nucleon nucleon interaction by polarized cold neutron capture on protons |
| url | http://dx.doi.org/10.1051/epjconf/20146605001 |
| work_keys_str_mv | AT alarconr measurementoftheweaknucleonnucleoninteractionbypolarizedcoldneutroncaptureonprotons AT blythd measurementoftheweaknucleonnucleoninteractionbypolarizedcoldneutroncaptureonprotons |