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19912026
Showing 2018 · hep-phShow all

11 papers · 2 filters

hep-ph2018★ 69 cited

Precise predictions for semileptonic decays

Florian U. Bernlochner, Zoltan Ligeti, Dean J. Robinson +1

We calculate the form factors and decay rates for all possible four-Fermi interactions beyond the Standard Model, including nonzero charged…

hep-ph2018★ 59 cited

Non-standard neutrino interactions and low energy experiments

Wolfgang Altmannshofer, Michele Tammaro, Jure Zupan

We formulate an Effective Field Theory (EFT) for Non Standard neutrino Interactions (NSI) in elastic scattering with light quarks, leptons, gluons and photons, including all possib…

hep-ph2018★ 16 cited

Heavy Higgs as a Portal to the Supersymmetric Electroweak Sector

Stefania Gori, Zhen Liu, Bibhushan Shakya

The electroweak sector of the Minimal Supersymmetric Standard Model (MSSM) - neutralinos, charginos and sleptons - remains relatively weakly constrained at the LHC due in part to t…

hep-ph2018★ 6 cited

Comment on "keV Neutrino Dark Matter in a Fast Expanding Universe" by Biswas et al

Nicolas Fernandez, Stefano Profumo

Biswas et al. found that the thermal relic density of a dark matter particle freezing out while the universe's energy density is dominated by a non-standard extra component , wh…

hep-ph2018★ 72 cited

Leveraging the ALICE/L3 cavern for long-lived exotics

Vladimir V. Gligorov, Simon Knapen, Benjamin Nachman +2

Run 5 of the HL-LHC era (and beyond) may provide new opportunities to search for physics beyond the standard model (BSM) at interaction point 2 (IP2). In particular, taking advanta…

hep-ph2018★ 16 cited

Multi-Higgs doublet models: the Higgs-fermion couplings and their sum rules

Miguel P. Bento, Howard E. Haber, J. C. Romao +1

This is the second of a series of papers that explores the physical parameterization, sum rules and unitarity bounds arising from a non-minimal scalar sector of the Standard Model…

hep-ph2018★ 65 cited

New predictions for semileptonic decays and tests of heavy quark symmetry

Florian U. Bernlochner, Zoltan Ligeti, Dean J. Robinson +1

The heavy quark effective theory makes model independent predictions for semileptonic decays in terms of a small set of parameters. No subleading Isgur-Wise function…

hep-ph2018★ 28 cited

Symmetries and Mass Degeneracies in the Scalar Sector

Howard E. Haber, O. M. Ogreid, P. Osland +1

We explore some aspects of models with two and three SU(2) scalar doublets that lead to mass degeneracies among some of the physical scalars. In Higgs sectors with two scalar doubl…

hep-ph2018★ 47 cited

Heavy Higgs boson decays in the alignment limit of the 2HDM

Bohdan Grzadkowski, Howard E. Haber, Odd Magne Ogreid +1

The Standard Model (SM)-like couplings of the observed Higgs boson impose strong constraints on the structure of any extended Higgs sector. We consider the theoretical properties a…

hep-ph2018★ 13 cited

Sub-GeV Dark Matter Shining at Future MeV Gamma-Ray Telescopes

Francesco D'Eramo, Stefano Profumo

We propose a novel framework where light (sub-GeV) dark matter (DM) is detectable with future MeV gamma-ray telescopes without conflicting with Cosmic Microwave Background (CMB) da…

hep-ph2018★ 50 cited

MeV Dark Matter Complementarity and the Dark Photon Portal

Maíra Dutra, Manfred Lindner, Stefano Profumo +3

We discuss the phenomenology of an MeV-scale Dirac fermion coupled to the Standard Model through a dark photon with kinetic mixing with the electromagnetic field. We compute the da…