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

Yamanaka, N.; Sahoo, B. K.; Yoshinaga, N.; Sato, T.; Asahi, K.; Das, B. P.

doi:10.48550/arxiv.1703.01570

Cited by 19 publications

(31 citation statements)

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“…where the renormalization was calculated in the leading logarithm approximation [19,75,[117][118][119][120][121]. Naively, we might see that the above equation is constraining the scale of new physics at the level of O(100) TeV, but we have to note that the Weinberg operator only appears from the two-loop level in many known candidates of new physics [49,85], so that the constraint on the energy scale can be attenuated.…”

Section: Resultsmentioning

confidence: 99%

“…Recently, the experimental result of the EDM of neutron was updated (|d n | < 1.8 × 10 −26 e cm) [14], and the constraint on the hadronic CP violation became tighter. The measurements of the EDM of diamagnetic atoms [15][16][17] also constrain the neutron EDM at a similar level [18][19][20][21]. Regarding the EDM of the proton, experimental measurements using storage rings are currently in development, with impressive prospective sensitivity of O(10 −29 )e cm [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

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Weinberg operator contribution to the nucleon electric dipole moment in the quark model

Yamanaka,

Hiyama

2020

Preprint

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We evaluate the contribution of the CP violating gluon chromo-electric dipole moment (the so-called Weinberg operator, denoted as w) to the electric dipole moment (EDM) of nucleons in the nonrelativistic quark model. The CP-odd interquark potential is modeled by the perturbative one-loop level gluon exchange generated by the Weinberg operator with massive quarks and gluons. The nucleon EDM is obtained by solving the nonrelativistic Schroedinger equation of the three-quark system using the Gaussian expansion method. It is found that the resulting nucleon EDM, which may reasonably be considered as the short-distance effect, is smaller than the long distance one obtained after "γ 5 -rotating" the anomalous magnetic moment using the CP-odd mass calculated with QCD sum rules. We estimate the total contribution to be d n = w × 20 e MeV and d p = −w × 18 e MeV with 60% of theoretical uncertainty.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Weinberg operator contribution to the nucleon electric dipole moment in the quark model

Yamanaka,

Hiyama

2020

Preprint

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“…This system gets relevant contributions from the nucleon EDMs, the CP-violating nuclear force, the electron EDM, and from CP-odd electron-nucleon interactions. We write [95,[97][98][99][100] d Hg = (0.012 ± 0.012)d e − (0.028 ± 0.006…”

Section: Edms Of Nuclei Atoms and Moleculesmentioning

confidence: 99%

Uncovering an Axion Mechanism with the EDM Portfolio

de Vries,

Draper,

Fuyuto

et al. 2021

Preprint

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Effective field theory arguments suggest that if BSM sectors contain new sources of CP-violation that couple to QCD, these sources will renormalize the θ term and frustrate ultraviolet solutions to the strong CP problem. Simultaneously, they will generate distinctive patterns of low-energy electric dipole moments in hadronic, nuclear, atomic, and molecular systems. Observing such patterns thus provides evidence that strong CP is solved by an infrared relaxation mechanism. We illustrate the renormalization of θ and the collections of EDMs generated in a several models of BSM physics, confirming effective field theory expectations, and demonstrate that measurements of ratios of electric dipole moments at planned experiments can provide valuable input on the resolution of the strong CP problem.

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“…, and γ(µ) is the anomalous dimension matrix. At leading order in α s it reads [37][38][39][40][41][42][43]…”

Section: Effective Theory Frameworkmentioning

confidence: 99%

Electric dipole moments from colour-octet scalars

Gisbert,

Miralles,

Ruiz-Vidal

2021

Preprint

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We present the contributions to electric dipole moments (EDMs) induced by the Yukawa couplings of an additional electroweak doublet of colour-octet scalars. The full set of one-loop diagrams and the enhanced higher-order effects from Barr-Zee diagrams are computed for the quark (chromo-)EDM, along with the two-loop contributions to the Weinberg operator. Using the stringent experimental upper limits on the neutron EDM, constraints on the parameter space of this model are derived.

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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

Cited by 19 publications

References 0 publications

Weinberg operator contribution to the nucleon electric dipole moment in the quark model

Weinberg operator contribution to the nucleon electric dipole moment in the quark model

Uncovering an Axion Mechanism with the EDM Portfolio

Electric dipole moments from colour-octet scalars

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