Searches for new sources of CP violation using molecules as quantum sensors

Hutzler, N. R.; Borschevsky, A.; Budker, D.; DeMille, D.; Flambaum, V. V.; Gabrielse, G.; Ruiz, R. F. Garcia; Jayich, A. M.; Orozco, L. A.; Ramsey-Musolf, M.; Reece, M.; Safronova, M. S.; Singh, J. T.; Tarbutt, M. R.; Zelevinsky, T.

doi:10.48550/arxiv.2010.08709

Cited by 9 publications

(9 citation statements)

References 73 publications

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“…Differently from most of the existing approaches to cosmological naturalness, our mechanism is compatible with Bounds [17] and future prospects [18][19][20] from hadronic EDM searches are shown. New ideas involving molecular compounds could further improve the red dashed line [21][22][23][24][25]. We also plot constraints on fuzzy DM from Lyman-α forest [26][27][28][29][30][31], measurements of the subhalo mass function [32] and the Eridanus II dwarf galaxy [33].…”

Section: Cosmologymentioning

confidence: 99%

Sliding Naturalness

D'Agnolo,

Teresi

2021

Preprint

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We present a novel framework to solve simultaneously the electroweak hierarchy problem and the strong-CP problem. A small but finite Higgs vacuum expectation value and a small θ-angle are selected after the QCD phase transition, without relying on the Peccei-Quinn mechanism or other traditional solutions. We predict a distinctive pattern of correlated signals at hadronic EDM, fuzzy dark matter and axion experiments.

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Section: Cosmologymentioning

confidence: 99%

Sliding Naturalness

D'Agnolo,

Teresi

2021

Preprint

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“…However, it can give the correct relic density if lighter than φ + : The red shaded region (dashed line) shows bounds [86] (future prospects [87][88][89]) from hadronic EDM searches. New ideas involving molecular compounds could further improve future sensitivities [90][91][92][93][94]. We also plot in black constraints on fuzzy DM from Lyman-α forest [95][96][97][98][99][100], measurements of the subhalo mass function [101] and the Eridanus II dwarf galaxy [102] (similar to the constraints from other dwarf galaxies [103,104]).…”

Section: Smoking-gun Phenomenological Patternmentioning

confidence: 90%

Sliding naturalness: cosmological selection of the weak scale

D’Agnolo

Teresi

2022

J. High Energ. Phys.

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We present a cosmological solution to the electroweak hierarchy problem. After discussing general features of cosmological approaches to naturalness, we extend the Standard Model with two light scalars very weakly coupled to the Higgs and present the mechanism, which we recently introduced in a companion paper to explain jointly the electroweak hierarchy and the strong-CP problem. In this work we show that this solution can be decoupled from the strong-CP problem and discuss its possible implementations and phenomenology. The mechanism works with any standard inflationary sector, it does not require weak-scale inflation or a large number of e-folds, and does not introduce ambiguities related to eternal inflation. The cutoff of the theory can be as large as the Planck scale, both for the Cosmological Constant and for the Higgs sector. Reproducing the observed dark matter relic density fixes the couplings of the two new scalars to the Standard Model, offering a target to future axion or fifth force searches. Depending on the specific interaction of the scalars with the Standard Model, the mechanism either yields rich phenomenology at colliders or provides a novel joint solution to the strong-CP problem. We highlight what predictions are common to most realizations of cosmological selection of the weak scale and will allow to test this general framework in the near future.

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“…However, if the θ-angle is also scanned in the landscape (for instance because of the presence of a scalar coupled to G G and lighter than φ ± ), then our mechanism itself solves The red shaded region (dashed line) shows bounds [79] (future prospects [80][81][82]) from hadronic EDM searches. New ideas involving molecular compounds could further improve future sensitivities [83][84][85][86][87]. We also plot in black constraints on fuzzy DM from Lyman-α forest [88][89][90][91][92][93], measurements of the subhalo mass function [94] and the Eridanus II dwarf galaxy [95] (similar to the constraints from other dwarf galaxies [96,97]).…”

Section: A Solving Also the Strong-cp Problemmentioning

confidence: 90%

Sliding Naturalness: Cosmological Selection of the Weak Scale

D'Agnolo,

Teresi

2021

Preprint

View full text Add to dashboard Cite

We present a cosmological solution to the electroweak hierarchy problem. After discussing general features of cosmological approaches to naturalness, we extend the Standard Model with two light scalars very weakly coupled to the Higgs and present the mechanism, which we recently introduced in a companion paper to explain jointly the electroweak hierarchy and the strong-CP problem. In this work we show that this solution can be decoupled from the strong-CP problem and discuss its possible implementations and phenomenology. The mechanism works with any standard inflationary sector, it does not require weak-scale inflation or a large number of efolds, and does not introduce ambiguities related to eternal inflation. The cutoff of the theory can be as large as the Planck scale, both for the Cosmological Constant and for the Higgs sector. Reproducing the observed dark matter relic density fixes the couplings of the two new scalars to the Standard Model, offering a target to future axion or fifth force searches. Depending on the specific interaction of the scalars with the Standard Model, the mechanism either yields rich phenomenology at colliders or provides a novel joint solution to the strong-CP problem. We highlight what predictions are common to most realizations of cosmological selection of the weak scale and will allow to test this general framework in the near future.

show abstract

Searches for new sources of CP violation using molecules as quantum sensors

Cited by 9 publications

References 73 publications

Sliding Naturalness

Sliding Naturalness

Sliding naturalness: cosmological selection of the weak scale

Sliding Naturalness: Cosmological Selection of the Weak Scale

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