Conveners
Session 4
- Jonathan Butterworth (University College London (UK))
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Prof. Benjamin Allanach (University of Cambridge)04/04/2019, 10:00
We shall review simplified Z' models as explanations for discrepancies between measurements of certain neutral current B meson decays and Standard Model predictions. We provide estimates of LHC and future collider sensitivity. Then a more complete model is introduced: The Third Family Hypercharge Model, which also explains some coarse features of the fermion mass spectrum.
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Miha Nemevsek04/04/2019, 10:25
In Left-Right symmetric theories, the origin of neutrino mass is due to spontaneous breaking of an extended gauge symmetry, which restores parity at high scales. The searches for the heavy Majorana neutrinos from single production via $W_R$ and pair production through the Higgs portal feature striking lepton number violating signatures. However, the final states vary drastically from same-sign...
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Dr Peter Galler (University of Glasgow)04/04/2019, 10:50
Effective Field Theory (EFT) is a powerful tool to parametrize high-scale New Physics in a largely model independent way. We employ this method to study the top quark sector of the dimension-six EFT extension of the Standard Model. In particular, we perform a global fit of top-quark related Wilson coefficients using experimental data. While fit results for TEVATRON and LHC Run I data have been...
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04/04/2019, 11:15
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Prof. Veronica Sanz04/04/2019, 11:50
The ATLAS and CMS collaborations have recently released significant new data on Higgs and diboson production in LHC Run 2. Measurements of Higgs properties have improved in many channels, while kinematic information for h→γγ and h→ZZ can now be more accurately incorporated in fits using the STXS method, and W+W− diboson production at high pT gives new sensitivity to deviations from the...
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Chris Hays (University of Oxford (GB))04/04/2019, 12:15
The SM EFT is a field-theoretical framework for describing high-scale physics. The unique sensitivity of Higgs measurements to new physics can be demonstrated by constraining EFT parameters with these measurements. I will describe procedures for translating Higgs measurements into EFT constraints.
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Andrea Mauri (Zurich University)04/04/2019, 12:40
Rare semileptonic $b \to s \ell^+ \ell^-$ transitions provide some of the most promising framework to search for New Physics effects. Recent analyses of these decays have indicated an anomalous pattern in measurements of angular distributions of the decay $B^0 \to K^{*0} \mu^+ \mu^-$ and in lepton-flavour- universality observables. A direct determination of the Wilson coefficients from data is...
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04/04/2019, 13:05