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Solving the strong CP problem with supersymmetry

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arxiv hep-ph/0105254 v2 pith:P4GAMG3H submitted 2001-05-24 hep-ph hep-th

G. Hiller (SLAC) , M. Schmaltz (Fermilab) This is my paper
classification hep-phhep-th
keywords strongbreakingnon-renormalizationphaseproblemsusybrokencommunicated
verification ladder T0 review T1 audit T2 compute T3 formal
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We propose a new solution to the strong CP problem based on supersymmetric non-renormalization theorems. CP is broken spontaneously and it's breaking is communicated to the MSSM by radiative corrections. The strong CP phase is protected by a susy non-renormalization theorem and remains exactly zero while loops can generate a large CKM phase from wave function renormalization. We present a concrete model as an example but stress that our framework is general. We also discuss constraints on susy breaking and point out experimental signatures.

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Cited by 5 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. When CP requires $\bar\theta=0$, not $\bar\theta=\pi$

    hep-ph 2025-07 conditional novelty 7.0 of 10

    CP alone allows the QCD theta angle to be 0 or pi; choosing a gauge group with enlarged theta periodicity forces CP to select 0, eliminating the excluded pi value.

  2. Transient Bias for CP Domain Wall Decay and Dark Matter

    hep-ph 2026-06 unverdicted novelty 6.0 of 10

    A new scalar induces transient bias to decay CP domain walls from spontaneous CP violation while its oscillations constitute dark matter.

  3. Upper Bound on Parity Breaking Scale for Doublet WIMP Dark Matter

    hep-ph 2025-07 conditional novelty 6.0 of 10

    In a Parity-symmetric extension of the Standard Model with doublet-pair WIMP dark matter, thermal relic abundance requires the Parity breaking scale to be below 25-60 TeV.

  4. Solving the strong CP problem in string-inspired theories with modular invariance

    hep-ph 2025-05 conditional novelty 6.0 of 10

    Modular invariance can suppress the QCD theta angle to zero in string-inspired supersymmetric models with positive modular weights and non-trivial gauge kinetic functions, while the CKM phase stays large.

  5. Exploring the Landscape of Spontaneous CP Violation in Supersymmetric Theories

    hep-ph 2025-10 unverdicted novelty 5.0 of 10

    Spontaneous CP violation is realized in SUSY via an extended spurion formalism in the exact limit and a model with intermediate-scale breaking along pseudo-flat directions stabilized by soft terms and non-perturbative...

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