scholarly journals Searches for Electric Dipole Moments—Overview of Status and New Experimental Efforts

Universe ◽  
2019 ◽  
Vol 5 (2) ◽  
pp. 56
Author(s):  
Florian Kuchler on behalf of the TUCAN and HeXeEDM Collaborations
Keyword(s):  
Electric Dipole ◽  
Dipole Moments ◽  
Global Analysis ◽  
Model Parameters ◽  
Electric Dipole Moments ◽  
Spallation Target ◽  
Fundamental Particles ◽  
T Violation ◽  
Theoretical Predictions ◽  
The Universe

Searches for permanent electric dipole moments (EDMs) of fundamental particles, atoms and molecules are promising experiments to constrain and potentially reveal beyond Standard Model (SM) physics. A non-zero EDM is a direct manifestation of time-reversal (T) violation, and, equivalently, violation of the combined operation of charge-conjugation (C) and parity inversion (P). Identifying new sources of CP violation can help to solve fundamental puzzles of the SM, e.g., the observed baryon-asymmetry in the Universe. Theoretical predictions for magnitudes of EDMs in the SM are many orders of magnitude below current experimental limits. However, many theories beyond the SM require larger EDMs. Experimental results, especially when combined in a global analysis, impose strong constraints on CP violating model parameters. Including an overview of EDM searches, I will focus on the future neutron EDM experiment at TRIUMF (Vancouver). For this effort, the TUCAN (TRIUMF Ultra Cold Advanced Neutron source) collaboration is aiming to build a strong, world leading source of ultra cold neutrons (UCN) based on a unique combination of a spallation target and a superfluid helium UCN converter. Another focus will be the search for an EDM of the diamagnetic atom 129 Xe using a 3 He comagnetometer and SQUID detection. The HeXeEDM collaboration has taken EDM data in 2017 and 2018 in the magnetically shielded room (BMSR-2) at PTB Berlin.

scholarly journals Recent Results and Progress on Leptonic and Storage Ring EDM Searches

2016 ◽  
Vol 40 ◽  
pp. 1660075
Author(s):  
David Kawall
Keyword(s):  
Standard Model ◽  
Storage Ring ◽  
Electric Dipole ◽  
Dipole Moments ◽  
New Physics ◽  
Electric Dipole Moments ◽  
Fundamental Particles ◽  
The Standard Model ◽  
And Storage ◽  
The Universe

The Standard Model is incomplete and unable to explain the matter-antimatter asymmetry in the universe. Many extensions of the Standard Model predict new particles and interactions with additional [Formula: see text]-violating phases that can explain this imbalance. Electric dipole moments (EDMs) of fundamental particles, which are generated by [Formula: see text]-violating interactions, can be enhanced by many orders of magnitude by contributions from this new physics to a magnitude within reach of current and planned experiments. New approaches to EDM searches using storage rings, and their sensitivity to new physics are presented.

scholarly journals Left-right symmetry and electric dipole moments. A global analysis

2021 ◽  
Vol 815 ◽  
pp. 136136
Author(s):  
Michael J. Ramsey-Musolf ◽  
Juan Carlos Vasquez
Keyword(s):  
Electric Dipole ◽  
Dipole Moments ◽  
Global Analysis ◽  
Electric Dipole Moments

scholarly journals Electric dipole moments: A global analysis

2015 ◽  
Vol 91 (3) ◽  
Author(s):  
Timothy Chupp ◽  
Michael Ramsey-Musolf
Keyword(s):  
Electric Dipole ◽  
Dipole Moments ◽  
Global Analysis ◽  
Electric Dipole Moments

scholarly journals Search for electric dipole moments

2020 ◽  
Vol 234 ◽  
pp. 01007
Author(s):  
Klaus Kirch ◽  
Philipp Schmidt-Wellenburg
Keyword(s):  
Electric Dipole ◽  
Dipole Moments ◽  
International Community ◽  
Current Status ◽  
Electric Dipole Moments ◽  
Fundamental Particles ◽  
Charged Leptons

Searches for permanent electric dipole moments of fundamental particles and systems with spin are the experiments most sensitive to new CP violating physics and a top priority of a growing international community. We briefly review the current status of the field emphasizing on the charged leptons and lightest baryons.

DYNAMICS IN PERTURBED VERY DILUTE AQUEOUS SOLUTIONS: THEORY AND EXPERIMENTAL EVIDENCE

2013 ◽  
Vol 27 (05) ◽  
pp. 1350005 ◽  
Author(s):  
TAMAR A. YINNON ◽  
VITTORIO ELIA
Keyword(s):  
Aqueous Solutions ◽  
Electric Dipole ◽  
Dipole Moments ◽  
Self Organization ◽  
Water Molecules ◽  
Quantum Field ◽  
Electric Dipole Moments ◽  
Periodic Oscillations ◽  
Theoretical Predictions ◽  
Dilute Aqueous Solutions

Perturbed very dilute aqueous solutions are investigated by analyzing their electric conductivity (χ). Foci include titrations and quasi-periodic oscillations of χ spanning several months. The χ data reflect persistent dissipative supramolecular self-organization. This paper's successful consistent explanations of the χ measurements corroborate earlier quantum field theoretical predictions. For example: (1) Permanent polarization results from quantum electro-dynamical interactions mediated auto-ordering of water molecules and molecular aggregates which have electric dipole moments. (2) The aggregates are created by exciting very dilute aqueous solutions, generating long lasting (cold) vortices in crystalline-like-structured super-fluidic domains. These domains are only present when the concentration (C) is lower than a solute dependent transitions concentration (C trans ). Typically, C trans is of the order of 10-4 M or below.

scholarly journals ν electroweak baryogenesis

2020 ◽  
Vol 2020 (10) ◽  
Author(s):  
E. Fernández-Martínez ◽  
J. López-Pavón ◽  
T. Ota ◽  
S. Rosauro-Alcaraz
Keyword(s):  
Cp Violation ◽  
Parameter Space ◽  
Electric Dipole ◽  
Dipole Moments ◽  
Baryon Asymmetry ◽  
Neutrino Masses ◽  
Electric Dipole Moments ◽  
Yukawa Couplings ◽  
Future Collider ◽  
The Universe

Abstract We investigate if the CP violation necessary for successful electroweak baryo- genesis may be sourced by the neutrino Yukawa couplings. In particular, we consider an electroweak scale Seesaw realization with sizable Yukawas where the new neutrino singlets form (pseudo)-Dirac pairs, as in the linear or inverse Seesaw variants. We find that the baryon asymmetry obtained strongly depends on how the neutrino masses vary within the bubble walls. Moreover, we also find that flavour effects critically impact the final asymmetry obtained and that, taking them into account, the observed value may be obtained in some regions of the parameter space. This source of CP violation naturally avoids the strong constraints from electric dipole moments and links the origin of the baryon asymmetry of the Universe with the mechanism underlying neutrino masses. Interestingly, the mixing of the active and heavy neutrinos needs to be sizable and could be probed at the LHC or future collider experiments.

Review of Electric Dipole Moments of Fundamental Particles

2009 ◽  
Author(s):  
Yannis K. Semertzidis ◽  
Donald G. Crabb ◽  
Yelena Prok ◽  
Matt Poelker ◽  
Simonetta Liuti ◽  
...  
Keyword(s):  
Electric Dipole ◽  
Dipole Moments ◽  
Electric Dipole Moments ◽  
Fundamental Particles
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