Precision determination of weak charge ofCs<mml:mprescripts/><mml:none/>133from atomic parity violation

2010/06/22 by S. G. Porsev, K. Beloy, Andrei Derevianko +1 · 6 citations
Mathematics · Physics and Astronomy · #Algorithm #Atomic and Molecular Physics #Atomic physics #Charge (physics) #Electroweak interaction #Energy (signal processing) #Gauge (firearms) #Materials science #Mathematics #Neutrino Physics Research #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum mechanics #Standard Model (mathematical formulation) #hep-ph #physics.atom-ph

paper · pdf · doi:10.1103/physrevd.82.036008

published as Phys.Rev.D82:036008,2010

arxiv created 2010/06/22 · openalex publication_date 2010/08/30 · arxiv updated 2014/11/21 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We discuss results of the most accurate to-date test of the low-energy electroweak sector of the standard model of elementary particles. Combining previous measurements with our high-precision calculations we extracted the weak charge of the ¹³³Cs nucleus, Q_W=\ensuremath-73.16(29)_exp(20)_th [S. G. Porsev, K. Beloy, and A. Derevianko, Phys. Rev. Lett. 102, 181601 (2009)]. The result is in perfect agreement with Q_W^SM predicted by the standard model, Q_W^SM=\ensuremath-73.16(3), and confirms energy dependence (or running) of the electroweak interaction and places constraints on a variety of new physics scenarios beyond the standard model. In particular, we increase the lower limit on the masses of extra Z-bosons predicted by models of grand unification and string theories. This paper provides additional details to the earlier paper. We discuss large-scale calculations in the framework of the coupled-cluster method, including full treatment of single, double, and valence triple excitations. To determine the accuracy of the calculations we computed energies, electric-dipole amplitudes, and hyperfine-structure constants. An extensive comparison with high-accuracy experimental data was carried out.

Citations

• Review of Particle Physics
• High-Accuracy Calculation of6s→7sParity-Nonconserving Amplitude in Cs
• Convergence of all-order many-body methods: Coupled-cluster study for Li
• Reevaluation of the role of nuclear uncertainties in experiments on atomic parity violation with isotopic chains
• Parity violation in atoms
• Measurement of the6s−7ptransition probabilities in atomic cesium and a revised value for the weak chargeQW
• Application of the dual-kinetic-balance sets in the relativistic many-body problem of atomic structure
• Theoretical overview of atomic parity violation

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• Parity-violating interactions of cosmic fields with atoms, molecules, and nuclei: Concepts and calculations for laboratory searches and extracting limits
• Muon Anomaly and Dark Parity Violation
• Scalable codes for precision calculations of properties of complex atomic systems
• Constraining extra neutral gauge bosons with atomic parity violation measurements