Skip to main content

Research Repository

Advanced Search

Outputs (144)

Consistency of Higgsplosion in localizable QFT (2019)
Journal Article
Khoze, V. V., & Spannowsky, M. (2019). Consistency of Higgsplosion in localizable QFT. Physics Letters B, 790, 466-474. https://doi.org/10.1016/j.physletb.2019.01.052

We show that large n-particle production rates derived in the semiclassical Higgsplosion limit of scalar field theoretical models with spontaneous symmetry breaking, are consistent with general principles of localizable quantum field theory. The stri... Read More about Consistency of Higgsplosion in localizable QFT.

Higgsplosion: Solving the hierarchy problem via rapid decays of heavy states into multiple Higgs bosons (2017)
Journal Article
Khoze, V. V., & Spannowsky, M. (2018). Higgsplosion: Solving the hierarchy problem via rapid decays of heavy states into multiple Higgs bosons. Nuclear Physics B, 926, 95-111. https://doi.org/10.1016/j.nuclphysb.2017.11.002

We introduce and discuss two inter-related mechanisms operative in the electroweak sector of the Standard Model at high energies. Higgsplosion, the first mechanism, occurs at some critical energy in the 25 to 103 TeV range, and leads to an exponentia... Read More about Higgsplosion: Solving the hierarchy problem via rapid decays of heavy states into multiple Higgs bosons.

Multiparticle production in the large λn limit: realising Higgsplosion in a scalar QFT (2017)
Journal Article
Khoze, V. V. (2017). Multiparticle production in the large λn limit: realising Higgsplosion in a scalar QFT. Journal of High Energy Physics, 2017(06), Article 148. https://doi.org/10.1007/jhep06%282017%29148

In a scalar theory which we use as a simplified model for the Higgs sector, we adopt the semiclassical formalism of Son for computations of n-particle production cross-sections in the high-multiplicity n → ∞ weak-coupling λ → 0 regime with the value... Read More about Multiparticle production in the large λn limit: realising Higgsplosion in a scalar QFT.

Simplified models of dark matter with a long-lived co-annihilation partner (2017)
Journal Article
Khoze, V. V., Plascencia, A. D., & Sakurai, K. (2017). Simplified models of dark matter with a long-lived co-annihilation partner. Journal of High Energy Physics, 2017(6), 1-28. https://doi.org/10.1007/jhep06%282017%29041

We introduce a new set of simplified models to address the effects of 3-point interactions between the dark matter particle, its dark co-annihilation partner, and the Standard Model degree of freedom, which we take to be the tau lepton. The contribut... Read More about Simplified models of dark matter with a long-lived co-annihilation partner.

Towards the next generation of simplified Dark Matter models (2017)
Journal Article
Albert, A., Bauer, M., Brooke, J., Buchmueller, O., Cerdeño, D. G., Citron, M., …Wardle, N. (2017). Towards the next generation of simplified Dark Matter models. Physics of the Dark Universe, 16, 49-70. https://doi.org/10.1016/j.dark.2017.02.002

This White Paper is an input to the ongoing discussion about the extension and refinement of simplified Dark Matter (DM) models. It is not intended as a comprehensive review of the discussed subjects, but instead summarises ideas and concepts arising... Read More about Towards the next generation of simplified Dark Matter models.

Hearing the signal of dark sectors with gravitational wave detectors (2016)
Journal Article
Jaeckel, J., Khoze, V. V., & Spannowsky, M. (2016). Hearing the signal of dark sectors with gravitational wave detectors. Physical Review D, 94(10), Article 103519. https://doi.org/10.1103/physrevd.94.103519

Motivated by advanced LIGO (aLIGO)’s recent discovery of gravitational waves, we discuss signatures of new physics that could be seen at ground- and space-based interferometers. We show that a first-order phase transition in a dark sector would lead... Read More about Hearing the signal of dark sectors with gravitational wave detectors.

Dark matter and leptogenesis linked by classical scale invariance (2016)
Journal Article
Khoze, V. V., & Plascencia, A. D. (2016). Dark matter and leptogenesis linked by classical scale invariance. Journal of High Energy Physics, 2016(11), Article 025. https://doi.org/10.1007/jhep11%282016%29025

In this work we study a classically scale invariant extension of the Standard Model that can explain simultaneously dark matter and the baryon asymmetry in the universe. In our set-up we introduce a dark sector, namely a non-Abelian SU(2) hidden sect... Read More about Dark matter and leptogenesis linked by classical scale invariance.

Multi-Higgs-boson production in gluon fusion at 100 TeV (2016)
Journal Article
Degrande, C., Khoze, V. V., & Mattelaer, O. (2016). Multi-Higgs-boson production in gluon fusion at 100 TeV. Physical Review D, 94(8), Article 085031. https://doi.org/10.1103/physrevd.94.085031

We carry out a detailed study of multi-Higgs production processes in the gluon fusion channel in the high-energy regime relevant to future circular hadron colliders and in the high-Higgs-multiplicity limit (≥20). Our results are based on the computat... Read More about Multi-Higgs-boson production in gluon fusion at 100 TeV.

Photo-production of a 750 GeV di-photon resonance mediated by Kaluza-Klein leptons in the loop (2016)
Journal Article
Abel, S., & Khoze, V. V. (2016). Photo-production of a 750 GeV di-photon resonance mediated by Kaluza-Klein leptons in the loop. Journal of High Energy Physics, 2016(5), Article 063. https://doi.org/10.1007/jhep05%282016%29063

We consider the phenomenology of a 750 GeV resonance X which can be produced at the LHC by only photon fusion and subsequently decay into di-photons. We propose that the spin-zero state X is coupled to a heavy lepton that lives in the bulk of a highe... Read More about Photo-production of a 750 GeV di-photon resonance mediated by Kaluza-Klein leptons in the loop.