N3He.N3HeIntro History
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May 25, 2013, at 01:59 PM
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More detailed information about this experiment is available in the original proposal from 2007 ([[Attach: Proposal.pdf | Proposal]]) and an update is provided in the official DOE proposal from 2013 ([[Attach: n3he_doe_proposal.pdf | Proposal]]).
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More detailed information about this experiment is available in the original proposal from 2007 ([[Attach: Proposal.pdf | Proposal]]) and an update is provided in the official DOE proposal from 2013 ([[Attach: n3he_doe_proposal.pdf | DOE Proposal]]).
May 25, 2013, at 01:57 PM
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Changed line 20 from:
More detailed information about this experiment is available in the original proposal from 2007 ([[Attach: Proposal.pdf | Proposal]]).
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More detailed information about this experiment is available in the original proposal from 2007 ([[Attach: Proposal.pdf | Proposal]]) and an update is provided in the official DOE proposal from 2013 ([[Attach: n3he_doe_proposal.pdf | Proposal]]).
May 25, 2013, at 01:54 PM
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The experiment is approved and in preparation at he Spallation Neutron Source, at Oak Ridge National Laboratory, in Tennessee, USA. It is the last one in a series of four experiments needed to provide a self-consistent description of the hadronic weak interaction (HWI) using few-body systems alone.
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The experiment is approved and in preparation at the Spallation Neutron Source, at Oak Ridge National Laboratory, in Tennessee, USA. It is the last one in a series of four experiments needed to provide a self-consistent description of the hadronic weak interaction (HWI) using few-body systems alone.
Beam time has been allocated, tentatively starting in the early Fall of 2014.
Beam time has been allocated, tentatively starting in the early Fall of 2014.
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The aim is to measure the asymmetry to 10% of its predicted size, with an approximate running time of 1 beam year.
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The aim is to measure the asymmetry to 10% of its predicted size, with an approximate running time of 1 beam year.
Our group, at the University of Manitoba, is responsible for the construction of the target-detector chamber, consisting of a 15 liter {$^{3}He$} ion wire chamber.
More detailed information about this experiment is available in the original proposal from 2007 ([[Attach: Proposal.pdf | Proposal]]).
Our group, at the University of Manitoba, is responsible for the construction of the target-detector chamber, consisting of a 15 liter {$^{3}He$} ion wire chamber.
More detailed information about this experiment is available in the original proposal from 2007 ([[Attach: Proposal.pdf | Proposal]]).
May 25, 2013, at 01:47 PM
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The experiment is approved and in preparation at he Spallation Neutron Source, at Oak Ridge National Laboratory, in Tennessee, USA. It is the last one in a series of four experiments needed to provide a self-consistent description of the hadronic weak interaction (HWI) using few-body systems alone.
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The experiment aims at a measurement with a relative error of 15%.
The measurement
The measurement
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The aim is to measure the asymmetry to 10% of its predicted size, with an approximate running time of 1 beam year.
May 25, 2013, at 01:43 PM
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The experiment aims at a measurement with a relative error of 15'%'.
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The experiment aims at a measurement with a relative error of 15%.
May 25, 2013, at 01:43 PM
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Changed line 13 from:
The experiment aims at a measurement with a relative error of 15%%.
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The experiment aims at a measurement with a relative error of 15'%'.
May 25, 2013, at 01:42 PM
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{$$A^{L}_{p} = -0.1892(86)f_{\pi} -0.0326(40)h^{0}_{\rho} -0.0334(29)h^{0}_{\omega}$$}
Given here in
Given here in
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{$$A^{L}_{p} = -0.1892(86)f_{\pi} -0.0326(40)h^{0}_{\rho} -0.0334(29)h^{0}_{\omega} \simeq 1.14\times 10^{-7}$$}
The experiment aims at a measurement with a relative error of 15%%.
The measurement
The experiment aims at a measurement with a relative error of 15%%.
The measurement
May 25, 2013, at 01:22 PM
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Changed lines 9-11 from:
Recent theoretical calculations (%newwin% [[http://link.aps.org/doi/10.1103/PhysRevC.82.044001 | PRC]])
show that the asymmetry is related to the
show that the asymmetry is related to the
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Recent theoretical calculations (%newwin% [[http://link.aps.org/doi/10.1103/PhysRevC.82.044001 | PRC]]) show that the asymmetry is related to a linear combination of weak hadronic couplings involving pion, {$\rho$}, and {$\omega$} meson exchange:
May 25, 2013, at 01:19 PM
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The measurement observable is the parity violating forward-backward asymmetry in the number of protons emitted in the breakup of the intermediate {$^{4}He$} state, for a beam of longitudinally polarized, cold neutrons:
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The measurement observable is the parity violating forward-backward asymmetry in the number of protons emitted in the breakup of the intermediate {$^{4}He$} state, for a beam of longitudinally polarized, cold neutrons.
Recent theoretical calculations (%newwin% [[http://link.aps.org/doi/10.1103/PhysRevC.82.044001 | PRC]])
show that the asymmetry is related to the
Recent theoretical calculations (%newwin% [[http://link.aps.org/doi/10.1103/PhysRevC.82.044001 | PRC]])
show that the asymmetry is related to the
Changed line 15 from:
The measurement is
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Given here in
May 25, 2013, at 01:13 PM
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Changed lines 7-11 from:
The measurement observable is the parity violating forward- backward asymmetry in the number of protons emitted in the breakup of the intermediate {$^{4}He$} state, for longitudinally polarized, cold neutrons.
to:
The measurement observable is the parity violating forward-backward asymmetry in the number of protons emitted in the breakup of the intermediate {$^{4}He$} state, for a beam of longitudinally polarized, cold neutrons:
{$$A^{L}_{p} = -0.1892(86)f_{\pi} -0.0326(40)h^{0}_{\rho} -0.0334(29)h^{0}_{\omega}$$}
The measurement is
{$$A^{L}_{p} = -0.1892(86)f_{\pi} -0.0326(40)h^{0}_{\rho} -0.0334(29)h^{0}_{\omega}$$}
The measurement is
May 25, 2013, at 01:03 PM
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The measurement observable is the parity violating forward- backward asymmetry in the number of protons emitted in the breakup of the intermediate {$$^{4}He$$} state, for longitudinally polarized, cold neutrons.
to:
The measurement observable is the parity violating forward- backward asymmetry in the number of protons emitted in the breakup of the intermediate {$^{4}He$} state, for longitudinally polarized, cold neutrons.
May 25, 2013, at 01:03 PM
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The measurement observable is the parity violating forward- backward asymmetry in the number of protons emitted in the breakup of the intermediate {$$^{4}He$$} state, for longitudinally polarized, cold neutrons.
May 25, 2013, at 12:50 PM
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{$$\vec{n}~ + ~^{3}He~ \rightarrow ~^{3}H~ + p + 765~\rm{keV}$$}
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{$$\vec{n}~ + ~^{3}He~ \rightarrow ~^{3}H~ + ~p~ + 765~\rm{keV}$$}
May 25, 2013, at 12:50 PM
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{$$\vec{n} + ~^{3}He~ \rightarrow ~^{3}H + p + 768~\rm{keV}$$}
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{$$\vec{n}~ + ~^{3}He~ \rightarrow ~^{3}H~ + p + 765~\rm{keV}$$}
May 25, 2013, at 12:49 PM
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{$$\vec{n} + ^{3}He \rightarrow ^{3}H + p + 768~\rm{keV}$$}
{$$\vec{n}$$}
{$$\vec{n}$$}
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{$$\vec{n} + ~^{3}He~ \rightarrow ~^{3}H + p + 768~\rm{keV}$$}
May 25, 2013, at 12:49 PM
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Changed line 5 from:
{$$\vec{n} + ^3He \rightarrow ^3H + p + 768~\rm{keV}$$}
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{$$\vec{n} + ^{3}He \rightarrow ^{3}H + p + 768~\rm{keV}$$}
May 25, 2013, at 12:49 PM
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May 25, 2013, at 12:44 PM
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{$$\vec{n}}
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{$$\vec{n}$$}
May 25, 2013, at 12:44 PM
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Added lines 6-7:
{$$\vec{n}}
May 25, 2013, at 12:41 PM
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The n'^3^'He experiment is a measurement of hadronic parity violation in the reaction:
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The n'^3^'He experiment is a measurement of hadronic parity violation in the reaction:
{$$\vec{n} + ^3He \rightarrow ^3H + p + 768~\rm{keV}$$}
{$$\vec{n} + ^3He \rightarrow ^3H + p + 768~\rm{keV}$$}
May 25, 2013, at 12:39 PM
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The n'^3^'He experiment is a measurement of hadronic parity violation in the reaction:
May 25, 2013, at 12:25 PM
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(:nosections:)
May 25, 2013, at 12:25 PM
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(:nosections:) !%center% %blue%The n'^3^'He Experiment: \\\
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(:nosections:)
!%center% %blue%The n'^3^'He Experiment: \\\
!%center% %blue%The n'^3^'He Experiment: \\\
May 25, 2013, at 12:25 PM
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!%center% %blue%The n'^3^'He Experiment: \\\
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(:nosections:) !%center% %blue%The n'^3^'He Experiment: \\\
May 25, 2013, at 12:25 PM
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(:nosections:)!%center% %blue%The n'^3^'He Experiment: \\\
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!%center% %blue%The n'^3^'He Experiment: \\\
May 25, 2013, at 12:24 PM
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(:nosections:)!%center% %blue%The n'^3^'He' Experiment: \\\
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(:nosections:)!%center% %blue%The n'^3^'He Experiment: \\\
May 25, 2013, at 12:23 PM
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N3He (under construction)
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(:nosections:)!%center% %blue%The n'^3^'He' Experiment: \\\
September 07, 2011, at 05:20 AM
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N3He
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N3He (under construction)
June 21, 2010, at 03:20 PM
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N3He