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DISCRETE 2014: Fourth Symposium on Prospects in the Physics of Discrete Symmetries

2–6 Dec 2014
King's College London, Strand Campus
Europe/London timezone

Session

Parallel 9: Higgs Physics @ LHC, discrete symmetries @LHC, new facilities

4 Dec 2014, 16:35
Great Hall and several lecture theatres (King's College London, Strand Campus)

Great Hall and several lecture theatres

King's College London, Strand Campus

Strand London WC2R 2LS UK

Presentation materials

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  1. 48. Lepton number violation in non-standard Higgs sectors
    Dr Mikael Chala (DESY)
    04/12/2014, 16:35
    We consider the phenomenology of extended Higgs sectors that allow the neutrino masses to be Majorana. This means that the extra scalars do violate lepton number. For that purpose, we classify them using an effective field theory approach. Then, using appropriate current ATLAS and CMS analyses we set the first bounds on lepton number violation in the scalar sector. We also describe how to...
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  2. 155. Implications of Higgs mediated Flavour Changing Neutral Currents with Minimal Flavour Violation.
    Margarida Nesbitt Rebelo (Instituto Superior Tecnico (IST))
    04/12/2014, 17:05
    We poropose an extension of the hypothesis of Minimal Flavour Violation to two Higgs doublet Models without the assumption of Natural Flavour Conservation in the Higgs sector. The potentially dangerous flavour changing neutral currents are suppressed by small entries of the CKM matrix as a result of a discrete symmetry imposed to the Lagrangian. This discrete symmetry is also...
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  3. 87. Higgs-Dilaton Cosmology: Universality vs. Criticality
    Dr Javier Rubio (EPFL)
    04/12/2014, 17:35
    The Higgs-Dilaton model is able to produce an early inflationary expansion followed by a dark energy dominated era responsible for the late time acceleration of the Universe. At tree-level, the model predicts a small tensor-to-scalar ratio, a tiny negative running of the spectral tilt and a non-trivial consistency relation between the spectral tilt of scalar perturbations and the dark energy...
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  4. 112. Electroweak vacuum stability, Higgs and top masses, and new physics
    Vincenzo Branchina (University of Catania)
    04/12/2014, 18:10
    Higgs Physics at LHC and Beyond
    Contribution (25 + 5 min)
    According to the usual analysis, if the Standard Model (SM) is valid up to the Planck scale $M_P$, the stability condition of the electroweak (EW) vacuum (stable, metastable or unstable) mainly depends on the Higgs and top masses, $M_H$ and $M_t$. The analysis is performed by considering SM interactions only, as it is argued that new physics at $M_P$, although present, has no...
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  5. 94. Degeneracy on a multiHiggs CP non invariant sector.
    Dr Melina Gomez Bock (Universidad de las Americas Puebla)
    04/12/2014, 18:35
    The Higgs sector with more than one Higgs doublet may have de\-ge\-ne\-ra\-cy in its physical states. Considering also $CP$ symmetry is not conserved in the Higgs sector, then the neutral Higgs states would not have a defined $CP$ charge,{\it i.e.} there is a mixing within scalar and pseudoscalar components of the Higgs doublets. This situation will occur for the cMSSM, {\it i.e.} with...
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  6. 156. S3 and Q6 as flavour symmetries in multi-Higgs models
    Myriam Mondragon (urn:Google)
    04/12/2014, 19:05
    We present an overview of the flavour groups S3 and Q6 in models with an extended Higgs sector. We extend the S3 results to SU(5) Grand Unified theories with Q6 as flavour group. We find the generic form of the mass matrices both in the quark and lepton sectors, which are consistent with experimental data. We reproduce, according to current data, the mixing in the CKM matrix. In the leptonic...
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