Outputs (58)

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.

Shift-Symmetries at Higher Order (2016)
Journal Article
Abel, S., & Stewart, R. (2016). Shift-Symmetries at Higher Order. Journal of High Energy Physics, 2016(2), Article 182. https://doi.org/10.1007/jhep02%282016%29182

The fate of shift-symmetries in effective string models is considered beyond tree-level. Such symmetries have been proposed in the past as a way to maintain a hierarchically small Higgs mass and also play a role in schemes of cosmological relaxation.... Read More about Shift-Symmetries at Higher Order.

Q-branes (2015)
Journal Article
Abel, S., & Kehagias, A. (2015). Q-branes. Journal of High Energy Physics, 2015(11), Article 096. https://doi.org/10.1007/jhep11%282015%29096

Non-topological solitons (Q-balls) are discussed in some stringy settings. Our main result is that the dielectric D-brane system of Myers admits non-abelian Q-ball solutions on their world-volume, in which N Dp-branes relax to the standard dielectric... Read More about Q-branes.

Towards a nonsupersymmetric string phenomenology (2015)
Journal Article
Abel, S., Dienes, K., & Mavroudi, E. (2015). Towards a nonsupersymmetric string phenomenology. Physical Review D, 91(12), Article 126014. https://doi.org/10.1103/physrevd.91.126014

Over the past three decades, considerable effort has been devoted to studying the rich and diverse phenomenologies of heterotic strings exhibiting spacetime supersymmetry. Unfortunately, during this same period, there has been relatively little work... Read More about Towards a nonsupersymmetric string phenomenology.

Genetic Algorithms and the Search for Viable String Vacua (2014)
Journal Article
Abel, S., & Rizos, J. (2014). Genetic Algorithms and the Search for Viable String Vacua. Journal of High Energy Physics, 2014(8), Article 10. https://doi.org/10.1007/jhep08%282014%29010

Genetic Algorithms are introduced as a search method for finding string vacua with viable phenomenological properties. It is shown, by testing them against a class of Free Fermionic models, that they are orders of magnitude more efficient than a rand... Read More about Genetic Algorithms and the Search for Viable String Vacua.

Natural supersymmetry and dynamical flavour with meta-stable vacua (2014)
Journal Article
Abel, S., & McGarrie, M. (2014). Natural supersymmetry and dynamical flavour with meta-stable vacua. Journal of High Energy Physics, 2014(7), Article 145. https://doi.org/10.1007/jhep07%282014%29145

We show how gauged flavour breaking and N = 1 supersymmetry breaking can be dynamically aligned to produce natural models. Supersymmetry is broken in a metastable vacuum, while a weakly gauged flavour symmetry is identified with an SU (3) F subgroup... Read More about Natural supersymmetry and dynamical flavour with meta-stable vacua.

Novel Higgs potentials from gauge mediation of exact scale breaking (2014)
Journal Article
Abel, S., & Mariotti, A. (2014). Novel Higgs potentials from gauge mediation of exact scale breaking. Physical Review D, 89(12), Article 125018. https://doi.org/10.1103/physrevd.89.125018

We present a gauge mediation principle for beyond standard model theories where exact UV scale invariance is broken in a hidden sector. The relevant configurations are those in which the standard model and a hidden sector emanate from a scale invaria... Read More about Novel Higgs potentials from gauge mediation of exact scale breaking.

Mapping Dirac gaugino masses (2013)
Journal Article
Abel, S., & Busbridge, D. (2013). Mapping Dirac gaugino masses. Journal of High Energy Physics, 2013(11), Article 098. https://doi.org/10.1007/jhep11%282013%29098

We investigate the mapping of Dirac gaugino masses through regions of strong coupling, focussing on SQCD with an adjoint. These models have a well-known Kutasov duality, under which a weakly coupled electric UV description can flow to a different wea... Read More about Mapping Dirac gaugino masses.

Seiberg Duality versus Hidden Local Symmetry (2012)
Journal Article
Abel, S., & Barnard, J. (2012). Seiberg Duality versus Hidden Local Symmetry. Journal of High Energy Physics, 2012(5), Article 44. https://doi.org/10.1007/jhep05%282012%29044

It is widely believed that the emergent magnetic gauge symmetry of SQCD is analogous to a hidden local symmetry (HLS). We explore this idea in detail, deriving the entire (spontaneously broken) magnetic theory by applying the HLS formalism to spontan... Read More about Seiberg Duality versus Hidden Local Symmetry.

Mapping Anomalous Currents in Supersymmetric Dualities (2011)
Journal Article
Abel, S., Buican, M., & Komargodski, Z. (2011). Mapping Anomalous Currents in Supersymmetric Dualities. Physical Review D, Particles and fields, 84(4), Article 045005. https://doi.org/10.1103/physrevd.84.045005

In many strongly coupled systems, the infrared dynamics is described by different degrees of freedom from the ultraviolet. It is then natural to ask how operators written in terms of the microscopic variables are mapped to operators composed of the m... Read More about Mapping Anomalous Currents in Supersymmetric Dualities.