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Monopoles and fermions in the Standard Model (2024)
Journal Article
Khoze, V. V. (2024). Monopoles and fermions in the Standard Model. Journal of High Energy Physics, 2024(9), Article 146. https://doi.org/10.1007/jhep09%282024%29146

We consider all magnetic monopoles that could have settled in the Standard Model after descending from a generic microscopic theory. These monopoles have Standard Model quantum numbers, are stable, and we also require that their magnetic fluxes are c... Read More about Monopoles and fermions in the Standard Model.

Scattering amplitudes of fermions on monopoles (2023)
Journal Article
Khoze, V. V. (2023). Scattering amplitudes of fermions on monopoles. Journal of High Energy Physics, 2023(11), Article 214. https://doi.org/10.1007/jhep11%282023%29214

We consider scattering processes involving massless fermions and ’t Hooft-Polyakov magnetic monopoles in a minimal SU(2) model and in the Grand Unified SU(5) theory. We construct expressions for on-shell amplitudes for these processes in the J = 0 pa... Read More about Scattering amplitudes of fermions on monopoles.

Large rapidity gaps in proton–nucleus interaction (2023)
Journal Article
Khoze, V. A., & Ryskin, M. G. (2023). Large rapidity gaps in proton–nucleus interaction. The European Physical Journal C, 83(11), Article 991. https://doi.org/10.1140/epjc/s10052-023-12189-0

We analyse the cross-section of events with Large Rapidity Gaps observed in proton–lead collisions by the CMS Collaboration (arXiv:2301.07630). The role of the transverse size of elementary pN amplitude is discussed. We emphasize that the cross-secti... Read More about Large rapidity gaps in proton–nucleus interaction.

Gravitational waves and dark matter from classical scale invariance (2023)
Journal Article
Khoze, V. V., & Milne, D. L. (2023). Gravitational waves and dark matter from classical scale invariance. Physical Review D, 107(9), Article 095012. https://doi.org/10.1103/physrevd.107.095012

In this paper we consider a minimal classically conformal U(1) model of fermionic dark matter. We calculate the one loop effective potential which generates the mass scale quantum mechanically via dimensional transmutation in the spirit of Gildener a... Read More about Gravitational waves and dark matter from classical scale invariance.

Multiparticle amplitudes in a scalar EFT (2022)
Journal Article
Khoze, V. V., & Schenk, S. (2022). Multiparticle amplitudes in a scalar EFT. Journal of High Energy Physics, 2022(5), Article 134. https://doi.org/10.1007/jhep05%282022%29134

At sufficiently high energies the production of a very large number of particles is kinematically allowed. However, it is well-known that already in the simplest case of a weakly-coupled massive λφ4 theory, n-particle amplitudes become non-perturbati... Read More about Multiparticle amplitudes in a scalar EFT.

Central instanton production (2022)
Journal Article
Khoze, V., Khoze, V., Milne, D., & Ryskin, M. (2022). Central instanton production. Physical Review D, 105(3), https://doi.org/10.1103/physrevd.105.036008

We study the central production of QCD instantons at hadron colliders in events with two large rapidity gaps. These gaps in rapidity are formed by either Pomeron or photon exchanges or a combination of the two. The kT-factorization formalism is used... Read More about Central instanton production.

Electroweak skyrmions in the HEFT (2021)
Journal Article
Criado, J. C., Khoze, V. V., & Spannowsky, M. (2021). Electroweak skyrmions in the HEFT. Journal of High Energy Physics, 2021(12), Article 26. https://doi.org/10.1007/jhep12%282021%29026

We study the existence of skyrmions in the presence of all the electroweak degrees of freedom, including a dynamical Higgs boson, with the electroweak symmetry being non-linearly realized in the scalar sector. For this, we use the formulation of the... Read More about Electroweak skyrmions in the HEFT.

Small instantons and the strong CP problem in composite Higgs models (2021)
Journal Article
Gupta, R., Khoze, V., & Spannowsky, M. (2021). Small instantons and the strong CP problem in composite Higgs models. Physical Review D, 104(7), Article 075011. https://doi.org/10.1103/physrevd.104.075011

We show that QCD instantons can generate large effects at small length scales in the ultraviolet in standard composite Higgs models that utilize partial compositeness. This has important implications for possible solutions of the strong CP problem in... Read More about Small instantons and the strong CP problem in composite Higgs models.

Hunting for QCD instantons at the LHC in events with large rapidity gaps (2021)
Journal Article
Khoze, V., Khoze, V., Milne, D., & Ryskin, M. (2021). Hunting for QCD instantons at the LHC in events with large rapidity gaps. Physical Review D, 104(5), https://doi.org/10.1103/physrevd.104.054013

We outline a strategy of how to search for QCD instantons of invariant mass 20–60 GeVin diffractive events in low-luminosity runs at the LHC. We show that, by imposing appropriate selection criteria on the final states, one can select the kinematic r... Read More about Hunting for QCD instantons at the LHC in events with large rapidity gaps.

The emergence of electroweak Skyrmions through Higgs bosons (2021)
Journal Article
Criado, J. C., Khoze, V. V., & Spannowsky, M. (2021). The emergence of electroweak Skyrmions through Higgs bosons. Journal of High Energy Physics, 2021(3), Article 162. https://doi.org/10.1007/jhep03%282021%29162

Skyrmions are extended field configurations, initially proposed to describe baryons as topological solitons in an effective field theory of mesons. We investigate and confirm the existence of skyrmions within the electroweak sector of the Standard Mo... Read More about The emergence of electroweak Skyrmions through Higgs bosons.

Searching for QCD instantons at hadron colliders (2021)
Journal Article
Khoze, V. V., Milne, D. L., & Spannowsky, M. (2021). Searching for QCD instantons at hadron colliders. Physical Review D, 103(1), Article 014017. https://doi.org/10.1103/physrevd.103.014017

QCD instantons are arguably the best motivated yet unobserved nonperturbative effects predicted by the Standard Model. A discovery and detailed study of instanton-generated processes at colliders would provide a new window into the phenomenological e... Read More about Searching for QCD instantons at hadron colliders.

Large Effects from Small QCD Instantons: Making Soft Bombs at Hadron Colliders (2020)
Journal Article
Khoze, V. V., Krauss, F., & Schott, M. (2020). Large Effects from Small QCD Instantons: Making Soft Bombs at Hadron Colliders. Journal of High Energy Physics, 2020(4), Article 201. https://doi.org/10.1007/jhep04%282020%29201

It is a common belief that the last missing piece of the Standard Model of particles physics was found with the discovery of the Higgs boson at the Large Hadron Collider. However, there remains a major prediction of quantum tunnelling processes media... Read More about Large Effects from Small QCD Instantons: Making Soft Bombs at Hadron Colliders.

The axion mass from 5D small instantons (2020)
Journal Article
Gherghetta, T., Khoze, V. V., Pomarol, A., & Shirman, Y. (2020). The axion mass from 5D small instantons. Journal of High Energy Physics, 2020(3), Article 063. https://doi.org/10.1007/jhep03%282020%29063

We calculate a new contribution to the axion mass that arises from gluons propagating in a 5th dimension at high energies. By uplifting the 4D instanton solution to five dimensions, the positive frequency modes of the Kaluza-Klein states generate a p... Read More about The axion mass from 5D small instantons.