Measuring nuclear-spin-dependent parity violation with molecules: Experimental methods and analysis of systematic errors

@article{Altunta2018MeasuringNP,
  title={Measuring nuclear-spin-dependent parity violation with molecules: Experimental methods and analysis of systematic errors},
  author={Emine Altuntaş and Jeffrey Ammon and Sydney B. Cahn and David DeMille},
  journal={Physical Review A},
  year={2018},
  volume={97},
  pages={042101}
}
Nuclear spin-dependent parity violation (NSD-PV) effects in atoms and molecules arise from $Z^0$ boson exchange between electrons and the nucleus, and from the magnetic interaction between electrons and the parity-violating nuclear anapole moment. It has been proposed to study NSD-PV effects using an enhancement of the observable effect in diatomic molecules [D. DeMille $\textit{et al.}$, Phys. Rev. Lett. $\textbf{100}$, 023003 (2008)]. Here, we demonstrate measurements of this type with… 

Demonstration of a Sensitive Method to Measure Nuclear-Spin-Dependent Parity Violation.

This work demonstrates measurements of NSD-PV that use an enhancement of the effect in diatomic molecules, and shows that systematic errors can be suppressed to at least the level of the present statistical sensitivity.

Nuclear spin-dependent parity-violating effects in light polyatomic molecules

Measurements of nuclear spin-dependent parity-violating (NSD-PV) effects provide an excellent opportunity to test nuclear models and to search for physics beyond the Standard Model. Molecules possess

Nuclear-spin dependent parity violation in optically trapped polyatomic molecules

Improved nuclear spin-dependent parity violation measurements will enable experimental determination of poorly known electroweak coupling parameters. Here, we investigate the suitability of optically

Enhanced nuclear-spin-dependent parity-violation effects using the HgH199 molecule

Electron interactions with the nuclear-spin-dependent (NSD) parity-nonconserving (PNC) anapole moment are strongly enhanced within heteronuclear diatomic molecules. A low-energy optical rotation

Isotopic variation of parity violation in atomic ytterbium

The weak force is the only fundamental interaction known to violate the symmetry with respect to spatial inversion (parity). This parity violation can be used to isolate the effects of the weak

Lifetime measurements of the A 2Π1/2 and A 2Π3/2 states in BaF

Time resolved detection of laser induced fluorescence from pulsed excitation of electronic states in barium monofluoride (BaF) molecules has been performed in order to determine the lifetimes of the

Cavity-based chiral polarimetry: parity nonconserving optical rotation in Cs, Dy, and HgH

The measurement of single-pass chiral optical rotation and circular dichroism are the most widely used methods for chirality sensing, and are of fundamental importance to many fields in physics,

Nuclear anapole moment interaction in BaF from relativistic coupled-cluster theory

We present high-accuracy relativistic coupled-cluster calculations of the P-odd interaction coefficient W-A describing the nuclear anapole moment effect on the molecular electronic structure. The

A laser cooling scheme for precision measurements using fermionic barium monofluoride (137Ba19F) molecules

We theoretically investigate the laser cooling of fermionic barium monofluoride (137BaF) molecules, which are promising candidates for precision studies of weak parity violation and nuclear anapole

Deceleration and Trapping of SrF Molecules.

This work significantly extends the species of neutral molecules of which slow beams can be created for collision studies, precision measurement, and trapping experiments and demonstrates a factor 3 increase in the molecular mass that has been Stark decelerated and trapped.

References

SHOWING 1-10 OF 70 REFERENCES

Electron correlation and nuclear charge dependence of parity-violating properties in open-shell diatomic molecules

The scaling of nuclear-spin-dependent parity-violating effects with increasing nuclear charge $Z$ is discussed in two series of isoelectronic open-shell diatomic molecules. The parameter

Relativistic configuration-interaction study of the nuclear-spin-dependent parity-nonconserving electron-nucleus interaction constantWAin BaF

A fully relativistic restricted active space configuration-interaction method is employed to compute the $P$-odd electron-nucleus interaction constant ${W}_{\text{A}}$ for the ground

Probing Low-Mass Vector Bosons with Parity Nonconservation and Nuclear Anapole Moment Measurements in Atoms and Molecules.

From measured and predicted values for the PNC amplitudes in Cs, Yb, and Tl, as well as the nuclear anapole moment of ^{133}Cs, this work constrain the P-violating vector-pseudovector nucleon-electron anducleon-proton interactions mediated by a generic vector boson of arbitrary mass.

Using molecules to measure nuclear spin-dependent parity violation.

This work outlines a method to measure nuclear spin-dependent parity violation, using a Stark-interference technique to determine the mixing between opposite-parity rotational/hyperfine levels of ground-state molecules, applicable to nuclei over a wide range of atomic number.

Parity violation effects in diatomics

Discussion of the parity violation and the break of the time-reversal invariance in diatomic molecules has continued for a number of years. Experiments on the TlF molecule gave one of the most

Measurement of parity violation in electron–quark scattering

A measurement of the parity-violating asymmetry in electron–quark scattering yields a determination of 2C2u − C2d with a precision increased by a factor of five relative to the earlier result, providing evidence with greater than 95 per cent confidence that the C2q couplings are non-zero, as predicted by the electroweak theory.

Towards improved measurements of parity violation in atomic ytterbium

We report on progress towards performing precision measurements of parity violation in Yb, in which the theoretical prediction for a strong weak-interaction-induced effect in the 6s2 1S0→ 5d6s3D1

Theoretical study of some experimentally relevant states of dysprosium

Configuration interaction method is used to calculate transition amplitudes and other properties of the low states of dysprosium which are used in cooling and in the study of the time variation of

Anapole moment and nucleon weak interactions

From the recent measurement of parity nonconservation (PNC) in the Cs atom we have extracted the constant of the nuclear spin dependent electron-nucleon PNC interaction, {kappa}=0.442(63); the

Search for parity nonconservation in atomic dysprosium

Results of a search for parity nonconservation (PNC) in a pair of nearly degenerate opposite-parity states in atomic dysprosium are reported. The sensitivity to PNC mixing is enhanced in this system
...