Electric dipole moments of neutron-odd nuclei

Fujita, Tomohiro; Oshima, Sachiko

doi:10.1088/0954-3899/39/9/095106

Cited by 5 publications

(3 citation statements)

References 31 publications

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“…The nuclear spin matrix element is also useful in evaluating the nucleon EDM effect to the nuclear EDM. An extension of the above formula using the magnetic moment are also available [437].…”

Section: Nuclear Spin Matrix Elementsmentioning

confidence: 99%

Probing exotic phenomena at the interface of nuclear and particle physics with the electric dipole moments of diamagnetic atoms: A unique window to hadronic and semi-leptonic CP violation

et al. 2017

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The current status of electric dipole moments of diamagnetic atoms which involves the synergy between atomic experiments and three different theoretical areas -particle, nuclear and atomic is reviewed. Various models of particle physics that predict CP violation, which is necessary for the existence of such electric dipole moments, are presented. These include the standard model of particle physics and various extensions of it. Effective hadron level combined charge conjugation (C) and parity (P) symmetry violating interactions are derived taking into consideration different ways in which a nucleon interacts with other nucleons as well as with electrons. Nuclear structure calculations of the CP-odd nuclear Schiff moment are discussed using the shell model and other theoretical approaches. Results of the calculations of atomic electric dipole moments due to the interaction of the nuclear Schiff moment with the electrons and the P and time-reversal (T) symmetry violating tensor-pseudotensor electron-nucleus are elucidated using different relativistic many-body theories. The principles of the measurement of the electric dipole moments of diamagnetic atoms are outlined. Upper limits for the nuclear Schiff moment and tensor-pseudotensor coupling constant are obtained combining the results of atomic experiments and relativistic many-body theories. The coefficients for the different sources of CP violation have been estimated at the elementary particle level for all the diamagnetic atoms of current experimental interest and their implications for physics beyond the standard model is discussed. Possible improvements of the current results of the measurements as well as quantum chromodynamics, nuclear and atomic calculations are suggested. .+y Nuclear tests of fundamental interactions and symmetries -31.15.ve Electron correlation calculations for atoms and ions: ground state PACS Higgs doublet modelsThe Higgs boson was recently discovered [4,5], but the detailed Higgs potential is still unknown. There are currently many well-motivated extensions of the Higgs sector BSM. The most well-known one is the two-Higgs doublet model (2HDM), and extensive studies have been performed [79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97].As the Higgs boson has a small coupling with light fermions, the one-loop level fermion EDM and the CP-odd four-fermion interactions are suppressed in 2HDM [98,99]. The leading contribution to the elementary level CP violation contributing to the EDM is the two-loop level Barr-Zee type diagram [79] [ Fig. 4 (b)], enhanced by the large Yukawa coupling of the top quark of the inner loop. The Barr-Zee type diagram contribution to the EDM of SM fermion can be written as [79]

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Section: Nuclear Spin Matrix Elementsmentioning

confidence: 99%

Probing exotic phenomena at the interface of nuclear and particle physics with the electric dipole moments of diamagnetic atoms: A unique window to hadronic and semi-leptonic CP violation

et al. 2017

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“…As a simple way to confirm the reliability of the results, we can estimate the enhancement factors of the nucleon EDM in the simple shell model. 11,[41][42][43]81 In the nuclear shell model, the nucleus is considered as a system made of a core and valence nucleons. By assuming a spherical nucleus with a valence nucleon N , the EDM of odd-numbered nuclei is given by…”

Section: Intrinsic Nucleon Edm Contributionmentioning

confidence: 99%

Review of the electric dipole moment of light nuclei

Yamanaka

2017

Int. J. Mod. Phys. E

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In this review, we summarize the theoretical development on the electric dipole moment of light nuclei. We first describe the nucleon level CP violation and its parametrization. We then present the results of calculations of the EDM of light nuclei in the ab initio approach and in the cluster model. The analysis of the effect of several models beyond standard model is presented, together with the prospects for its discovery. The advantage of the electric dipole moment of light nuclei is focused in the point of view of the many-body physics. The evaluations of the nuclear electric dipole moment generated by the $\theta$-term and by the CP phase of the Cabibbo-Kobayashi-Maskawa matrix are also reviewed.Comment: 35 pages, 9 figures. review, published versio

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“…Because of this proportionality, the study of B(GT) values can reliably be extended up to high excitations if "standard B(GT) values" for the normalization are provided from β -decay studies. The development in full beam matching techniques [5,6,7,8] at the Research Center for Nuclear Physics (RCNP), Osaka realized an energy resolution of ≈ 30 keV in ( 3 He,t) reactions at an intermediate energy of 140 MeV/nucleon and 0 • . However, individual transitions were poorly studied due to the limited energy resolution (≈ 300 keV).…”

Section: Introductionmentioning

confidence: 99%

Gamow-Teller Transitions Studied in ([sup 3]He, t) Reaction and Analogous β decay

Fujita¹,

Rubio²,

Molina³

et al. 2010

AIP Conference Proceedings

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Due to the simplicity of the σ τ operator that causes Gamow-Teller (GT) transitions, they are the most popular nuclear weak process in the Universe. The GT transitions in p f -shell nuclei, for example, starting from stable T z = +1 and proton-rich T z = −1 nuclei, where T z = (N − Z)/2, play important roles in the supernova-explosion or rp-process nucleosynthesis. In the β -decay study of p f -shell nuclei, half-lives can be measured rather accurately. On the other hand, in a high-resolution ( 3 He,t) charge-exchange reaction at 0 • , individual GT transitions up to high excitations can be studied. In order to derive reliable GT transition strengths B(GT), we present a unique analysis that combines the strength distribution form the ( 3 He,t) measurement with the information from the study of mirror β decay, where good isospin symmetry of T z = ±1 → 0 transitions is assumed.

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Electric dipole moments of neutron-odd nuclei

Cited by 5 publications

References 31 publications

Probing exotic phenomena at the interface of nuclear and particle physics with the electric dipole moments of diamagnetic atoms: A unique window to hadronic and semi-leptonic CP violation

Probing exotic phenomena at the interface of nuclear and particle physics with the electric dipole moments of diamagnetic atoms: A unique window to hadronic and semi-leptonic CP violation

Review of the electric dipole moment of light nuclei

Gamow-Teller Transitions Studied in ([sup 3]He, t) Reaction and Analogous β decay

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