scholarly journals Neutron Electric Dipole Moments from Beyond the Standard Model Physics

2014 ◽  
Author(s):  
Tanmoy Bhattacharya ◽  
Vincenzo Cirigliano ◽  
Rajan Gupta
Keyword(s):  
Standard Model ◽  
Electric Dipole ◽  
Dipole Moments ◽  
Beyond The Standard Model ◽  
Electric Dipole Moments ◽  
The Standard Model

A REVIEW OF CP VIOLATION IN ATOMS

1993 ◽  
Vol 08 (02) ◽  
pp. 209-236 ◽  
Author(s):  
S.M. BARR
Keyword(s):  
Cp Violation ◽  
Standard Model ◽  
Electric Dipole ◽  
Dipole Moments ◽  
Beyond The Standard Model ◽  
Electric Dipole Moments ◽  
The Standard Model ◽  
The Subject

The subject of atomic and molecular electric dipole moments is reviewed from the perspective of currently interesting theories of CP violation beyond the standard model.

scholarly journals CP VIOLATION IN SUPERSYMMETRIC THEORIES

2003 ◽  
Vol 18 (10) ◽  
pp. 1697-1732 ◽  
Author(s):  
SHAABAN KHALIL
Keyword(s):  
Dipole Moment ◽  
Cp Violation ◽  
Standard Model ◽  
Electric Dipole ◽  
Dipole Moments ◽  
Neutron Electric Dipole Moment ◽  
Cp Asymmetry ◽  
Electric Dipole Moments ◽  
The Standard Model ◽  
Supersymmetric Theories

We review the present status of the CP violating problem in supersymmetric extensions of the standard model. We analyze the constraints imposed by the experimental limits of the electron, neutron, and mercury electric dipole moments on the supersymmetric CP phases and show that only the scenarios with flavour-off-diagonal CP violation remain attractive. These scenarios require Hermitian Yukawa matrices which naturally arise in models with left–right symmetry or a SU(3) flavour symmetry. In this case, εK and ε′/ε can be saturated by a small non-universality of the soft scalar masses through the gluino and chargino contributions respectively. The model also predicts a strong correlation between A CP (b → sγ) and the neutron electric dipole moment. In this framework, the standard model gives a the leading contribution to the CP asymmetry in B → ψKS decay, while the dominant chargino contribution to this asymmetry is < 0.2. Thus, no constraint is set on the non-universality of this model by the recent BaBar and Belle measurements.

scholarly journals Non-perturbative renormalization scheme for the C P -odd three-gluon operator

2020 ◽  
Vol 2020 (9) ◽  
Author(s):  
Vincenzo Cirigliano ◽  
Emanuele Mereghetti ◽  
Peter Stoffer
Keyword(s):  
Standard Model ◽  
Lattice Qcd ◽  
Electric Dipole ◽  
Dipole Moments ◽  
Effective Field ◽  
Renormalization Scheme ◽  
Beyond The Standard Model ◽  
Matrix Elements ◽  
The Standard Model ◽  
Perturbative Renormalization

Abstract We define a regularization-independent momentum-subtraction scheme for the C P -odd three-gluon operator at dimension six. This operator appears in effective field theories for heavy physics beyond the Standard Model, describing the indirect effect of new sources of C P-violation at low energies. In a hadronic context, it induces permanent electric dipole moments. The hadronic matrix elements of the three-gluon operator are non-perturbative objects that should ideally be evaluated with lattice QCD. We define a non-perturbative renormalization scheme that can be implemented on the lattice and we compute the scheme transformation to $$ \overline{\mathrm{MS}} $$ MS ¯ at one loop. Our calculation can be used as an interface to future lattice-QCD calculations of the matrix elements of the three-gluon operator, in order to obtain theoretically robust constraints on physics beyond the Standard Model from measurements of the neutron electric dipole moment.

scholarly journals A Novel RF E × B Spin Manipulator at COSY

2016 ◽  
Vol 40 ◽  
pp. 1660094 ◽  
Author(s):  
Sebstian Mey ◽  
Ralf Gebel
Keyword(s):  
Standard Model ◽  
Electric Dipole ◽  
Dipole Moments ◽  
Standard Model Prediction ◽  
Deuteron Beam ◽  
Coherent Beam ◽  
Beyond The Standard Model ◽  
Vertical Polarization ◽  
The Standard Model ◽  
Polarized Beam

The Jülich Electric Dipole Moment Investigations (JEDI) Collaboration is developing tools for the measurement of permanent Electric Dipole Moments (EDMs) of charged, light hadrons in storage rings. While the Standard Model prediction for the EDM gives unobservably small magnitudes, a non-vanishing EDM from [Formula: see text] violating sources beyond the standard model can lead to a tiny build-up of vertical polarization in a beforehand horizontally polarized beam. This requires a spin tune modulation by an RF dipole without any excitation of coherent beam oscillations. In the course of 2014, a prototype RF [Formula: see text] dipole has been successfully commissioned and tested. We verified that the device can be used to continuously flip the vertical polarization of a 970[Formula: see text]MeV/c deuteron beam without exciting any coherent beam oscillations.

scholarly journals Coulomb excitation of pear-shaped nuclei

2019 ◽  
Vol 223 ◽  
pp. 01007
Author(s):  
Peter Butler ◽  
Liam Gaffney ◽  
Pietro Spagnoletti ◽  
Joonas Konki ◽  
Marcus Scheck ◽  
...  
Keyword(s):  
Electric Dipole ◽  
Particle Physics ◽  
Coulomb Excitation ◽  
Dipole Moments ◽  
Large Body ◽  
Quantum States ◽  
Beyond The Standard Model ◽  
Electric Dipole Moments ◽  
Atomic Nuclei ◽  
The Standard Model

There is a large body of evidence that atomic nuclei can undergo octupole distortion and assume the shape of a pear. This phenomenon is important for measurements of electric-dipole moments of atoms, which would indicate CP violation and hence probe physics beyond the Standard Model of particle physics. Isotopes of both radon and radium have been identified as candidates for such measurements. Here, we have observed the low-lying quantum states in 224Rn and 226Rn by accelerating beams of these radioactive nuclei. We show that radon isotopes undergo octupole vibrations but do not possess static pear-shapes in their ground states. We conclude that radon atoms provide less favourable conditions for the enhancement of a measurable atomic electric-dipole moment.

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 Filling the gaps between model predictions and their prerequisites in electric dipole moments

2016 ◽  
Vol 31 (14n15) ◽  
pp. 1650082 ◽  
Author(s):  
Takeshi Fukuyama ◽  
Koichiro Asahi
Keyword(s):  
Electric Dipole ◽  
Model Building ◽  
Dipole Moments ◽  
The Other ◽  
Beyond The Standard Model ◽  
Correct Interpretation ◽  
Electric Dipole Moments ◽  
The Standard Model ◽  
Model Predictions ◽  
Theoretical Predictions

We clarify the conditions or assumptions under which theoretical predictions of various models beyond the standard model give mainly in electric dipole moments. The correct interpretation of those conditions seems to be indispensable to the refinements of model building as well as to the mutual reliance in experimental and theoretical communities. The connections of these analyses to the recent experimental results at the LHC and the other places are also discussed.

Sign in / Sign up

Export Citation Format

Share Document