Limit on the constant of T-nonconserving nucleon-nucleon interaction

Flambaum, V. V.; Khriplovich, I.B.; Sushkov, O. P.

doi:10.1016/0370-2693(85)90908-6

Cited by 107 publications

(162 citation statements)

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“…There are several calculations of the 199 Hg EDM in terms of the Schiff moment in the literature, which can be cast in the general form 8) with the coefficient taking the values C S Hg = −4 [34,35], −2.8 [36] and +5.07 [37]. We note that we have changed the sign of the most recent calculation based on relativistic coupledcluster theory [37], so as to match the conventions in the previous calculations [34][35][36] JHEP02 (2011)045 based on coupled perturbed Hartree-Fock calculations, and that it has a different sign. For our numerical calcluatons we take the estimates of the coefficient C S Hg that have negative signs.…”

Section: Jhep02(2011)045mentioning

confidence: 99%

Maximal electric dipole moments of nuclei with enhanced Schiff moments

Ellis

Lee

Pilaftsis

2011

J. High Energ. Phys.

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Abstract:The electric dipole moments (EDMs) of heavy nuclei, such as 199 Hg, 225 Ra and 211 Rn, can be enhanced by the Schiff moments induced by the presence of nearby parity-doublet states. Working within the framework of the maximally CP-violating and minimally flavour-violating (MCPMFV) version of the MSSM, we discuss the maximal values that such EDMs might attain, given the existing experimental constraints on the Thallium, neutron and Mercury EDMs. The maximal EDM values of the heavy nuclei are obtained with the help of a differential-geometrical approach proposed recently that enables the maxima of new CP-violating observables to be calculated exactly in the linear approximation. In the case of 225 Ra, we find that its EDM may be as large as 6 to 50 × 10 −27 e · cm.

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Section: Jhep02(2011)045mentioning

confidence: 99%

Maximal electric dipole moments of nuclei with enhanced Schiff moments

Ellis

Lee

Pilaftsis

2011

J. High Energ. Phys.

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“…Atomic calculations [5,6] [12]. Since Xe atoms are diamagnetic, the measurement is mainly aimed at the 129 Xe nuclear Schiff moment.…”

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confidence: 99%

“…Statistical considerations show that the magnetometry experiment can offer up to 10 orders of magnitude improvement over the present sensitivity to the nuclear Schiff moment ( 199 Hg experiment [3].) With this improvement, the sensitivity is 4 orders of magnitude better than the value of the nuclear Schiff moment expected from the standard model, [4,5,7,24]. Such significant enhancement is due to the strong internal electric field of the ferroelectric, as well as due to the possibility to cool the nuclear-spin subsystem in the compound down to nanokelvin temperatures.…”

mentioning

confidence: 99%

“…The most sensitive experiment with diamagnetic atoms is performed with 199 Hg vapor [3]; it gives the upper limit on the EDM of 199 Hg atom d( 199 Hg) ≤ 2.1 × 10 −28 e cm. This EDM is mainly induced by the nuclear Schiff moment, S, which is usually defined by the P-and T-odd electrostatic potential it generates [4]:Atomic calculations [5,6] [12]. Since Xe atoms are diamagnetic, the measurement is mainly aimed at the 129 Xe nuclear Schiff moment.…”

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confidence: 99%

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Suggested search forPb207nuclear Schiff moment inPbTiO3
Mukhamedjanov
¹
,
Sushkov
²

2005
Phys. Rev. A
31
4
55
2
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We suggest two types of experiments, NMR and macroscopic magnetometry, with solid PbTiO3 to search for the nuclear Schiff moment of 207 Pb. Both kinds of experiments promise substantial improvement over the presently achieved sensitivities. Statistical considerations show that the improvement of the current sensitivity can be up to 10 orders of magnitude for the magnetometry experiment and up to 6 orders of magnitude for the NMR experiment. Such significant enhancement is due to the strong internal electric field of the ferroelectric, as well as due to the possibility to cool the nuclear-spin subsystem in the compound down to nanokelvin temperatures. PACS numbers: 11.30.Er, 32.10.Dk, 67.80.Jd The existence of permanent electric dipole moment (EDM) of a quantum particle requires that fundamental parity (P) and time-reversal (T) symmetries are violated. By the CPT-theorem, this would also mean the violation of the combined CP (charge conjugation-parity) symmetry. Studies of T and CP violation in Nature provide valuable information for the theories of baryogenesis, and for our understanding of fundamental interactions in general. Thus, considerable effort has been put into searches for EDMs of particles, atoms and molecules.The current experimental upper limit on the neutron EDM is d n ≤ 6.3 × 10 −26 e cm [1]. Experiments with paramagnetic atoms and molecules, the most sensitive of which was performed with Tl atoms [2], provide upper limit on the electron EDM, d e ≤ 1.6 × 10 −27 e cm. The most sensitive experiment with diamagnetic atoms is performed with 199 Hg vapor [3]; it gives the upper limit on the EDM of 199 Hg atom d( 199 Hg) ≤ 2.1 × 10 −28 e cm. This EDM is mainly induced by the nuclear Schiff moment, S, which is usually defined by the P-and T-odd electrostatic potential it generates [4]:Atomic calculations [5,6] [12]. Since Xe atoms are diamagnetic, the measurement is mainly aimed at the 129 Xe nuclear Schiff moment. By statistical considerations only, the sensitivity of the experiment is d( 129 Xe) ∼ 3 × 10 −37 e cm for 10 days of averaging [12]. Taking into account the smaller nuclear charge of Xe, this effectively means improvement by 8 orders of magnitude when compared to the present result (2) for 199 Hg. The limitations because of the systematic effects are also discussed in Ref. [12]. The solid state experiment with gadolinium garnet, recently suggested by Lamoreaux [13] to measure the electron EDM, promises 5 order of magnitude improvement over the current Tl result (statistical estimate corresponding to 10 days of averaging.)In the present paper we suggest to use ferroelectric PbTiO 3 to measure Schiff moment of 207 Pb nucleus. Possibility to measure the macroscopic magnetization induced by electric field, as was suggested by Lamoreaux for gadolinium garnets [13], looks most promising because of the large internal electric field in ferroelectric. In addition, the nuclear-spin subsystem of the compound can be magnetically cooled down to nanokelvin temperatures. For a 10-day averaging, statisti...

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“…The dominant contribution arises at third order in perturbation theory [5]. There is another contribution at second order [33,34], arising from the interaction of the electron EDM with the magnetic field of the nucleus.…”

Section: Electron Edmmentioning

confidence: 99%

Techniques used to search for a permanent electric dipole moment of the199Hg atom and the implications forCPviolation

et al. 2013

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Copyright and reuse:Sussex Research Online is a digital repository of the research output of the University.Copyright and all moral rights to the version of the paper presented here belong to the individual author(s) and/or other copyright owners. To the extent reasonable and practicable, the material made available in SRO has been checked for eligibility before being made available.Copies of full text items generally can be reproduced, displayed or performed and given to third parties in any format or medium for personal research or study, educational, or not-for-profit purposes without prior permission or charge, provided that the authors, title and full bibliographic details are credited, a hyperlink and/or URL is given for the original metadata page and the content is not changed in any way. We discuss in detail the search for a permanent electric dipole moment (EDM) of the 199 Hg atom reported by Griffith et al. [Phys. Rev. Lett. 102, 101601 (2009)]. The upper bound, d( 199 Hg) < 3.1 × 10 −29 e cm (95% C.L.), is a factor of 7 improvement over the best previous EDM limit for 199 Hg, provides the most sensitive probe to date for EDMs in diamagnetic atoms, and sets new limits on time-reversal symmetry violation in extensions to the standard model. This paper provides extensive discussion of the techniques used to search for the 199 Hg EDM and the implications of the new 199 Hg EDM limit for CP violation in elementary particle interactions.

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Limit on the constant of T-nonconserving nucleon-nucleon interaction

Cited by 107 publications

References 11 publications

Maximal electric dipole moments of nuclei with enhanced Schiff moments

Maximal electric dipole moments of nuclei with enhanced Schiff moments

Suggested search forPb207nuclear Schiff moment inPbTiO3
Mukhamedjanov
¹
,
Sushkov
²

2005
Phys. Rev. A
31
4
55
2
View full text Add to dashboard Cite

Techniques used to search for a permanent electric dipole moment of the199Hg atom and the implications forCPviolation

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Limit on the constant of T-nonconserving nucleon-nucleon interaction

Cited by 107 publications

References 11 publications

Maximal electric dipole moments of nuclei with enhanced Schiff moments

Maximal electric dipole moments of nuclei with enhanced Schiff moments

Suggested search forPb207nuclear Schiff moment inPbTiO3Mukhamedjanov1, Sushkov2 2005Phys. Rev. A314552View full textAdd to dashboardCite

Techniques used to search for a permanent electric dipole moment of the199Hg atom and the implications forCPviolation

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Suggested search forPb207nuclear Schiff moment inPbTiO3
Mukhamedjanov
¹
,
Sushkov
²

2005
Phys. Rev. A
31
4
55
2
View full text Add to dashboard Cite