G. Ingelman
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View article: Varying gauge couplings and collider phenomenology
Varying gauge couplings and collider phenomenology Open
In this paper we investigate a natural extension of the Standard Model that involves varying coupling constants. This is a general expectation in any fundamental theory such as string theory, and there are good reasons for why new physics …
View article: Nucleon parton distributions from hadronic quantum fluctuations
Nucleon parton distributions from hadronic quantum fluctuations Open
A physical model is presented for the non-perturbative parton distributions\nin the nucleon. This is based on quantum fluctuations of the nucleon into\nbaryon-meson pairs convoluted with Gaussian momentum distributions of partons\nin hadro…
View article: Towards solving the proton spin puzzle
Towards solving the proton spin puzzle Open
The fact that the spins of the quarks in the proton, as measured in deep inelastic lepton scattering, only add up to about 30$\%$ of the spin of the proton is still not understood after 30 years. We show that our newly developed model for …
View article: Heavy photophilic scalar at the LHC from a varying electromagnetic coupling
Heavy photophilic scalar at the LHC from a varying electromagnetic coupling Open
We investigate the phenomenology of a heavy scalar $\\phi$ of the type\ninvolved in Bekenstein's framework for varying electromagnetic coupling\ntheories, with the difference that the scalar in our model has a large mass.\nThe model has on…
View article: Hard color singlet BFKL exchange and gaps between jets at the LHC
Hard color singlet BFKL exchange and gaps between jets at the LHC Open
We explore the perturbative QCD dynamics of hard parton-parton scattering through the exchange of a color singlet two-gluon ladder as described by the BFKL equation, resulting in a rapidity gap between two high transverse momentum jets. Im…
View article: Constraining minimal anomaly free U(1) extensions of the Standard Model
Constraining minimal anomaly free U(1) extensions of the Standard Model Open
We consider a class of minimal anomaly free U(1) extensions of the Standard Model with three generations of right-handed neutrinos and a complex scalar. Using electroweak precision constraints, new 13 TeV LHC data, and considering theoreti…
View article: Dynamic color screening in diffractive deep inelastic scattering
Dynamic color screening in diffractive deep inelastic scattering Open
We present a novel Monte-Carlo implementation of dynamic colour screening via\nmultiple exchanges of semi-soft gluons as a basic QCD mechanism to understand\ndiffractive electron-proton scattering at the HERA collider. Based on the\nkinema…
View article: The 750 GeV excess from photon-photon and quark-quark processes
The 750 GeV excess from photon-photon and quark-quark processes Open
The observed excess in the diphoton mass spectrum around 750 GeV at the 13 TeV LHC possibly indicates the presence of a photonphilic resonance. We show that the excess can be explained by a scalar of the type involved in Bekenstein's frame…
View article: Ruling out minimal anomaly free $\mathrm{U}(1)$ extensions of the Standard Model
Ruling out minimal anomaly free $\mathrm{U}(1)$ extensions of the Standard Model Open
We consider minimal anomaly free $\mathrm{U}(1)$ extensions of the Standard Model with three generations of right-handed neutrinos and a complex scalar. Assuming all fields are charged under the new $\mathrm{U}(1)$ group, we find that in a…
View article: The force awakens - the 750 GeV diphoton excess at the LHC from a varying electromagnetic coupling
The force awakens - the 750 GeV diphoton excess at the LHC from a varying electromagnetic coupling Open
We show that the recent 750 GeV diphoton excess observed at the LHC may be explained by the production of a scalar of the type involved in Bekenstein's framework for varying-$\alpha$ theories, with the difference that the scalar in our mod…