Abstract
We discuss possible implications of exotic stringy instantons for baryon-violating signatures in future colliders. In particular, we discuss high-energy quark collisions and transitions. In principle, the process can be probed by high-luminosity electron-positron colliders. However, we find that an extremely high luminosity is needed in order to provide a (somewhat) stringent bound compared to the current data on NN → ππ,KK. On the other hand, (exotic) instanton-induced six-quark interactions can be tested in near future high-energy colliders beyond LHC, at energies around 20–100 TeV. The Super proton-proton Collider (SppC) would be capable of such measurement given the proposed energy level of 50–90 TeV. Comparison with other channels is made. In particular, we show the compatibility of our model with neutron-antineutron and NN → ππ,KK bounds.
Highlights
In recent companion papers, implications of exotic stringy instantons in B − L violating rare processes and baryogenesis were explored [1,2,3,4,5,6,7,8,9,10,11,12]As known, in open string theories, instantons are (Euclidean) D-branes wrapping n-cycles on the Calabi-Yau (CY) manifold
We have explored the possibility to detect exotic instantons in future colliders, in comparison with present low energy limit channels like n ↔ n, N N → ππ, KK
We summarize our main conclusions as follow: i) contrary to other non-perturbative solutions like electroweak gauge instantons, exotic instantons can induce effective operator with a high coupling
Summary
Implications of exotic stringy instantons in B − L violating rare processes and baryogenesis were explored [1,2,3,4,5,6,7,8,9,10,11,12]. The possibility to test exotic instantons in collider may allow to the test low scale string theory in the fully non-perturbative regime. This may be insightfully important to understand the issues from geometric moduli stabilization in string compactification. We argue how compared measured in neutronantineutron physics and in high energy colliders beyond LHC can provide tests for our model in the near future. In this sense, the high energy frontier is the preferred experimental direction of our model, with respect to the high luminosity one. IV its phenomenology and parameter space in comparison with several other different possible channels before our conclusions
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