Lattice QCD calculation of nuclear parity violation

Wasem, Joseph

doi:10.1103/physrevc.85.022501

Cited by 76 publications

(126 citation statements)

References 30 publications

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“…Figure 1. This 2-D exclusion plot of DDH vector vs. scalar couplings shows several previous experimental results, an LQCD calculation [3], and the target NPDGamma precision.…”

Section: Motivationmentioning

confidence: 90%

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

Alarcón

Blyth

2014

EPJ Web of Conferences

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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.

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“…Figure 1. This 2-D exclusion plot of DDH vector vs. scalar couplings shows several previous experimental results, an LQCD calculation [3], and the target NPDGamma precision.…”

Section: Motivationmentioning

confidence: 90%

“…The 2-D exclusion plot in Figure 1 shows some previous experimental results, the DDH prediction, an LQCD calculation [3], and the target NPDGamma precision (not a result). DDH predict a reasonable range (black box) and "best value" (black dot).…”

Section: Motivationmentioning

confidence: 99%

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

Alarcón

Blyth

2014

EPJ Web of Conferences

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“…Hadronic parity violation is a unique probe of the non-perturbative strong coupling limit of QCD. The NPDGamma Collaboration just presented preliminary results on the long range weak meson coupling h 1 π [52], which will finally test theoretical predictions [53,54,55]. The n+ 3 He experiment at SNS continues this study, and a new n+ 4 He apparatus is under construction for NIST [56].…”

Section: Fundamental Neutron Physicsmentioning

confidence: 99%

Cold and Ultra-cold Neutrons as Probes of New Physics

Konrad¹,

Abele²

2017

Proceedings of the 26th International Nuclear Physics Conference — PoS(INPC2016)

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Despite the great success of the Standard Model, many key questions in particle physics, astrophysics, and cosmology are unanswered. In particular, more than 95 % of the universe consists of unknown dark matter and dark energy. Today, a major goal of particle physics is to look for evidence of new physics beyond the Standard Model. Collider searches for new physics are well suited to the direct production of new high-mass particles, whereas low-energy precision experiments search for traces that new particles leave in known processes. Direct and indirect evidence of new physics are highly complementary. High-precision experiments with extremely slow, cold and ultra-cold neutrons address some of the unanswered questions, for instance, on the nature of the fundamental forces and underlying symmetries, the origin, evolution, and fate of the universe, or on the nature of the gravitational force at very small distances. For example, the limit on the electric dipole moment of the neutron constrains the CP violating phases, the lifetime of the neutron determines the relative helium abundance in the universe, and neutrons bouncing over a mirror probe dark matter and dark energy. New facilities and technological developments now give window for significant improvement in precision by one to two orders of magnitude. In this paper, we will give an overview of current and planned facilities and experiments, as well as an overview of some of the applications of neutrons to astrophysics, cosmology, and physics beyond the Standard Model.

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“…For a preliminary determination of a corresponding LEC in a theory containing explicit pion degrees of freedom see Ref. [10]. It is currently more feasible to determine the values of the LECs by comparison with experimental results.…”

Section: Hadronic Parity Violation In Pionless Eftmentioning

confidence: 99%

Hadronic Parity Violation in Few-Nucleon Systems

Schindler

2013

Few-Body Syst

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Abstract. The weak interaction between quarks induces a parity-violating component in the interactions between nucleons, which is expected to be suppressed by a factor of about 10 −7 to 10 −6 compared to the dominant parity-conserving part of the interaction. A theoretical framework to analyze and interpret parity-violating observables in few-nucleon systems is described and selected results are presented.

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Lattice QCD calculation of nuclear parity violation

Cited by 76 publications

References 30 publications

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

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

Cold and Ultra-cold Neutrons as Probes of New Physics

Hadronic Parity Violation in Few-Nucleon Systems

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