Measurement of the weak nucleon-nucleon interaction by polarized cold neutron capture on protons

Ricardo Alarcon; D. Blyth

doi:10.1051/epjconf/20146605001

Measurement of the weak nucleon-nucleon interaction by polarized cold neutron capture on protons

Ricardo Alarcon, D. Blyth

Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

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.

Original language	English (US)
Title of host publication	EPJ Web of Conferences
Volume	66
DOIs	https://doi.org/10.1051/epjconf/20146605001
State	Published - 2014
Event	2013 International Nuclear Physics Conference, INPC 2013 - Firenze, Italy Duration: Jun 2 2013 → Jun 7 2013

Other

Other	2013 International Nuclear Physics Conference, INPC 2013
Country/Territory	Italy
City	Firenze
Period	6/2/13 → 6/7/13

ASJC Scopus subject areas

General Physics and Astronomy

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10.1051/epjconf/20146605001

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title = "Measurement of the weak nucleon-nucleon interaction by polarized cold neutron capture on protons",

abstract = "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.",

author = "Ricardo Alarcon and D. Blyth",

year = "2014",

doi = "10.1051/epjconf/20146605001",

language = "English (US)",

volume = "66",

booktitle = "EPJ Web of Conferences",

note = "2013 International Nuclear Physics Conference, INPC 2013 ; Conference date: 02-06-2013 Through 07-06-2013",

}

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T1 - Measurement of the weak nucleon-nucleon interaction by polarized cold neutron capture on protons

AU - Alarcon, Ricardo

AU - Blyth, D.

PY - 2014

Y1 - 2014

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=84898722496&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84898722496&partnerID=8YFLogxK

U2 - 10.1051/epjconf/20146605001

DO - 10.1051/epjconf/20146605001

M3 - Conference contribution

AN - SCOPUS:84898722496

VL - 66

BT - EPJ Web of Conferences

T2 - 2013 International Nuclear Physics Conference, INPC 2013

Y2 - 2 June 2013 through 7 June 2013

ER -

Measurement of the weak nucleon-nucleon interaction by polarized cold neutron capture on protons

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