Conveners
Higgs Expt., Theory and Phenomenology
- Jamie Tattersall (University of Heidelberg)
- Attilio Andreazza (Universitร degli Studi e INFN Milano (IT))
Higgs Expt., Theory and Phenomenology
- Roberto Castello (CERN)
Higgs Expt., Theory and Phenomenology
- Sven Heinemeyer (CSIC (Santander, ES))
- Maria Moreno Llacer (Georg-August-Universitaet Goettingen (DE))
Higgs Expt., Theory and Phenomenology
- Bohdan Grzadkowski (University of Warsaw)
- Stephen Martin (Northern Illinois University)
Higgs Expt., Theory and Phenomenology
- Petra Merkel (Fermi National Accelerator Lab. (US))
- LianTao Wang (University of Chicago)
Higgs Expt., Theory and Phenomenology
- Florian Urs Bernlochner (Universitaet Bonn (DE))
Higgs Expt., Theory and Phenomenology
- Rick Cavanaugh (University of Illinois at Chicago (US))
- Joseph David Lykken (Fermi National Accelerator Lab. (US))
Higgs Expt., Theory and Phenomenology
- Thomas Rizzo
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Heather Logan (Carleton University)24/08/2015, 14:30Higgs Theory and ExperimentI will review the current status of Higgs cross section and branching ratio calculations in the MSSM and other BSM theories with extended Higgs sectors.Go to contribution page
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Roberto Castello (CERN)24/08/2015, 15:00Higgs Theory and ExperimentThe most recent results about the Beyond Standard Model Higgs searches with the CMS experiment at the LHC will be presented. The talk would include material from SM Higgs, Exotica and SUSY analyses for the Higgs sector. Eventual new results for the Higgs searches with the Run 2 data will be detailed, if any.Go to contribution page
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Matteo Bauce (Universita e INFN, Roma I (IT))24/08/2015, 15:20Higgs Theory and ExperimentWe search for the pseudoscalar Higgs boson A of 2HDMs in the decay modes A-> tautau and A->Zh. In the latter case, h is the lightest neutral scalar Higgs boson and is assumed to be the newly discovered 125 GeV particle. The results are interpreted in the context of 2HDMs and the Minimal Supersymmetric Standard Model (MSSM).Go to contribution page
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Howard Haber (University of California,Santa Cruz (US))24/08/2015, 16:30Higgs Theory and ExperimentIt is possible that the electroweak scale is low in part due to selection effects, i.e., fine-tuning of the microscopic parameters. The experimental discovery of new light fundamental scalars other than the Standard Model Higgs boson would cast doubt on this theory, since generically such states imply parametrically worse fine-tuning with no compelling connection to selection effects. ...Go to contribution page
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Petar Kevin Rados (University of Melbourne (AU))24/08/2015, 16:50Higgs Theory and ExperimentThe combined measurements of the properties of the Higgs boson using the ATLAS detector and up to 25 fb-1 of 7 TeV and 8 TeV pp collision data collected in 2011 and 2012, are discussed. The results are obtained combining all channels measured at run 1. They include strengths of production and decay modes, couplings to fermions and bosons, spin and CP properties.Go to contribution page
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Sara Alderweireldt (University of Antwerp (BE))24/08/2015, 17:10Higgs Theory and ExperimentThe final LHC Run1 results in the search for a Higgs bosons decaying to bottom quarks performed by CMS is presented. Besides the standard model interpretation, well-motivated models with extended Higgs sectors are also being considered.Go to contribution page
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Peisi Huang (University of Chicago/Argonne National Lab)24/08/2015, 17:30Higgs Theory and ExperimentWe study the correlation between the Higgs trilinear coupling and the nature of Electroweak Phase Transition. We use two examples to illustrate this correlations -- a simplified model where we include higher order terms in the effective potential, and the NMSSM. We find a large deviation in the trilinear coupling from its Standard Model value in a theory that exhibits a strong first order...Go to contribution page
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Spencer Chang (University of Oregon)24/08/2015, 17:50Higgs Theory and ExperimentIn this talk, I will discuss scenarios of induced electroweak symmetry breaking (EWSB), where the Higgs vacuum expectation value is induced by another EWSB source. These additional sources can be due to another Higgs vev or technicolor sector and can mitigate constraints on beyond the Standard Model theories (e.g. raising the Higgs mass in supersymmetric models). I will discuss the collider...Go to contribution page
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Harri Waltari24/08/2015, 18:10Higgs Theory and ExperimentWe study left-right symmetric supersymmetry and the constraints on its Higgs sector from LHC data. The model has a light doubly charged Higgs, whose mass comes from radiative corrections. The LHC bounds on the doubly charged Higgs mass reduce the parameter space significantly. We look at Higgs branching ratios and low energy constraints. We find that the Higgs decay width to bottom quarks can...Go to contribution page
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Cen Zhang (Brookhaven National Laboratory)25/08/2015, 14:30Higgs Theory and ExperimentThe discovery of the Higgs boson allows us to test the standard model at a new level. Ongoing and near future experiments on precision Higgs and EW observables requires a theory for SM deviations. While the kappa framework has been successful as a first attempt, a more consistent theory is required as one moves beyond leading order. In this talk I will summarize recent progress in the Higgs...Go to contribution page
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Lydia Brenner (Nikhef)25/08/2015, 15:00Higgs Theory and ExperimentThe discovery of the Higgs boson opens many perspectives to explore physics beyond the Standard Model. This talk describes constraints of new physics in a number of models using the combined measurements of the coupling strength of the 125 GeV Higgs particle using the entire ATLAS run-I data. The various models presented include an additional real electroweak singlet, two Higgs doublet models,...Go to contribution page
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Jรฉrรฉmy Bernon (LPSC Grenoble)25/08/2015, 15:20Higgs Theory and ExperimentAfter the discovery of a 125 GeV Higgs boson with properties close to those predicted in the Standard Model (SM), it is crucial to assess the existence of an extended Higgs sector. The framework of the two Higgs doublet models (2HDM) is particularly simple and well suited for such considerations. The alignment limit, realized either through decoupling of the additional Higgs states or the...Go to contribution page
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Donald Austin Belknap (University of Wisconsin (US))25/08/2015, 15:40Higgs Theory and ExperimentThe talk will present a summary of the measurement of the Higgs properties using the H->ZZ->4l, H->WW->2l2nu and H->gammagamma decay channels, and the full dataset recorded by the CMS experiment during the LHC Run 1, corresponding to an integrated luminosity of 5.1 fb-1 at a center-of-mass energy of 7 TeV and up to 19.7 fb-1 at 8 TeV. The talk will present the measurements of the Higgs boson...Go to contribution page
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Florian Bernlochner (Bonn)25/08/2015, 16:30Higgs Theory and ExperimentRecent results on studies of the Higgs boson in the diphoton decay channel are reported including limits on its width through interference effects, a study of its properties in the context of an effective field theory, and its production in association with missing transverse energy.Go to contribution page
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Daisuke Takahashi (Okinawa Institute of Science and Technology Graduate University)25/08/2015, 16:50Higgs Theory and ExperimentWe consider the minimal U(1)โฒ extension of the Standard Model (SM) with conformal invariance at the classical level, where in addition to the SM particle contents, three generations of right-handed neutrinos and a U(1)โฒ Higgs field are introduced. In the presence of the three right-handed neutrinos, which are responsible for the seesaw mechanism, this model is free from all the gauge and...Go to contribution page
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Daniel Egana-Ugrinovic (Rutgers University)25/08/2015, 17:10Higgs Theory and ExperimentEffective field theory provides an excellent way to organize deviations from the Standard Model Higgs properties, in the case of an extended Higgs sector. In this talk, we present the low energy theories of the Higgs sector for some of the most popular beyond the standard model UV completions. For brevity, we only consider the Higgs sector extended with a real singlet (xSM) and with a...Go to contribution page
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Julian Michael Bouffard (State University of New York (US))25/08/2015, 17:30Higgs Theory and ExperimentSince the discovery of a Higgs boson by the ATLAS and CMS experiments at the LHC, the emphasis has shifted towards measurements of its properties and the search for less sensitive channels in order to determine whether the new particle is the Standard Model (SM) Higgs boson. Of particular importance is the direct observation of the coupling of the Higgs boson to top quarks. In this talk a...Go to contribution page
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Dr Ezequiel Rodriguez Jauregui (Universidad de Sonora)25/08/2015, 17:50Higgs Theory and ExperimentIn this work, the analysis of the Higgs sector in the context of the minimal $S(3)$-invariant extension of the Standard Model ($S(3)$SM) is performed. Three Higgs fields, which are SU(2) doublets, and CP invariant, are considered to compute the exact and analytical physical Higgs boson masses. Furthermore, within this model an explicit form of the trilinear self-couplings $\lambda_{ijk}$ are...Go to contribution page
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Maria Moreno Llacer (Georg-August-Universitaet Goettingen (DE))25/08/2015, 18:10Higgs Theory and ExperimentSince the discovery of a Higgs boson by the ATLAS and CMS experiments at the LHC, the emphasis has shifted towards measurements of its couplings in order to determine whether the new particle is the Standard Model Higgs boson. Combined analyses of the Higgs boson production and decay rates as well as of its coupling strengths to vector bosons and fermions have been performed using 7 TeV and 8...Go to contribution page
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Adrian Perieanu (Hamburg University (DE))27/08/2015, 14:00Higgs Theory and ExperimentThis talk will focus on the ATLAS and CMS Prospects for Higgs Physics at the HL-ยญLHC, covering expected future performance and sensitivity in Higgs physics during the HL-ยญLHC era.Go to contribution page
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Adarsh Pyarelal (University of Arizona)27/08/2015, 14:30Higgs Theory and ExperimentWhile current ATLAS and CMS measurements exclude a light charged Higgs ($m_{H^\pm}<160$ GeV) for most of the parameter region in the context of the MSSM scenarios, these bounds are significantly weakened in the Type II 2HDM once the exotic decay channel into a lighter neutral Higgs, $H^\pm \to AW/HW$, is open. In this study, we examine the possibility of a light charged Higgs produced in...Go to contribution page
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Cecile Sarah Caillol (Universite Libre de Bruxelles (BE))27/08/2015, 14:50Higgs Theory and ExperimentThe most recent results from CMS on the search for a neutral Higgs bosons decaying into a tau or a muon pair will be presented. The production of a neutral Higgs boson via the gluon fusion or through associate production with b quarks are considered.Go to contribution page
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Sabine Kraml (LPSC Grenoble)27/08/2015, 15:10Higgs Theory and ExperimentSearches in final states with two leptons plus missing transverse energy, targeting supersymmetric particles or invisible decays of the Higgs boson, were performed during Run 1 of the LHC. Recasting the results of these analyses in the context of the Inert Doublet Model (IDM) using MadAnalysis 5, we show that they provide constraints on inert scalars that significantly extend previous limits...Go to contribution page
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Prof. Matthias Neubert (Johannes Gutenberg University Mainz)27/08/2015, 15:30Higgs Theory and ExperimentWe present a detailed analysis of the rare exclusive Higgs-boson decays into a single vector meson and a photon and investigate the possibility of using these processes to probe the light-quark Yukawa couplings. We work with an effective Lagrangian with modified Higgs couplings to account for possible new-physics effects in a model-independent way. The $h\to V\gamma$ decay rate is governed by...Go to contribution page
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Petra Merkel (Fermi National Accelerator Lab. (US))27/08/2015, 16:30Higgs Theory and ExperimentSearches for additional Higgs-like bosons are reported for Higgs boson masses between 145 GeV and 1 TeV. The search is based on proton-proton collision data corresponding to an integrated luminosity of up to 5.1 inverse fb at the centre-of-mass energy of 7 TeV and up to 19.3 inverse fb at 8 TeV, recorded by the CMS experiment at the LHC. Several final states of the WW, ZZ, gammagamma, and...Go to contribution page
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Jan Hajer (HKUST)27/08/2015, 16:50Higgs Theory and ExperimentSearching for Higgs bosons beyond the Standard Model (BSM) is one of the most important missions for hadron colliders. As a landmark of BSM physics, the MSSM Higgs sector at the LHC is expected to be tested up to the scale of the decoupling limit of O(1) TeV, except for a wedge region centered around tan ฮฒ ~ 3โ10, which has been known to be difficult to probe. In this talk, we present a...Go to contribution page
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Geoffrey Gilles (Univ. Blaise Pascal Clermont-Fe. II (FR))27/08/2015, 17:10Higgs Theory and ExperimentCharged Higgs bosons, H+, are predicted by many models with an extended Higgs sector. This presentation reports ATLAS studies and results of searches for charged Higgs bosons in various final states. Exclusion limits are given and interpreted in the context of the Minimal Supersymmetric extension of the Standard Model.Go to contribution page
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Gouranga Kole (Tata Inst. of Fundamental Research (IN))27/08/2015, 17:50Higgs Theory and ExperimentRecent results on searches for charged Higgs bosons at the LHC by the CMS collaboration are presented. Charged Higgs bosons have bean searched for in top quark decays for lower mass and directly produced for higher masses. Charged Higgs boson decays into tau nu, cs and tb have been exploited. Results are based on approximately 20 fb-1 of data collected at sqrt(s) 8 TeV at the LHC.Go to contribution page
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Andrea Tesi28/08/2015, 14:20Higgs Theory and ExperimentThe presence of extra scalar singlets is a feature of several motivated extensions of the Standard Model, and the mixing of such a singlet with the Higgs boson is allowed to be quite large by current experiments. I will consider both direct and indirect searches, and quantify the current constraints as well as the prospects for future hadron and lepton machines. The results are first presented...Go to contribution page
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Kristina Anne Looper (Ohio State University (US))28/08/2015, 14:50Higgs Theory and ExperimentWe present the results of searches for non-Standard Model decays of the 125 GeV Higgs boson, including decays to dark sector bosons, lepton flavour violating and flavour changing decays, and decays to a light pseudoscalar neutral Higgs boson (a) predicted by the next-Minimal-Supersymmetric-Standard-Model.Go to contribution page
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Ahmed Ismail (Argonne National Laboratory/University of Illinois at Chicago)28/08/2015, 15:20Higgs Theory and ExperimentDouble Higgs production is a unique collider process, enabling the determination of the Higgs self-coupling. However, it is exceedingly rare in the Standard Model, due to the cancellation between the standard triangle and box contributions to the amplitude. I will demonstrate an analytic understanding of this cancellation, and its implications for the impact of new physics on Higgs pair...Go to contribution page
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Sunghoon Jung (Korea Institute for Advanced Study (KIAS))28/08/2015, 15:40Higgs Theory and ExperimentWe discuss new striking resonance shapes of MSSM heavy Higgs bosons from the resonance-continuum interference with a relative phase: pure resonance dips, nothingness and enhanced pure peaks. We derive conditions for them and devise the modified narrow width approximation(NWA) to work with non-zero imaginary parts. Importantly, ttbar resonance searches at the LHC are crucially impacted. But we...Go to contribution page
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Graham Cree (Carleton)28/08/2015, 16:50Higgs Theory and ExperimentThe results of searches for high mass Higgs bosons decaying to diboson (ZZ,WW,yy) final states by the ATLAS experiment are reported. In absence of the presence of a signal in the data, exclusion limits are presented.Go to contribution page
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JoAnne Hewett (SLAC)28/08/2015, 17:10Higgs Theory and ExperimentJust as renormalizable Simplified Models can be used alongside of effective field theories for the study of dark matter interactions, Simplified Models can be used to describe new physics associated with the Higgs boson. The objective is for the Simplified Model to capture some of the new Higgs physics associated with a wide range of UV-complete theories. Such models allow for...Go to contribution page
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Francesca Ricci-Tam (University of California Davis (US))28/08/2015, 17:30Higgs Theory and ExperimentA new boson of mass 125 GeV has been discovered at the LHC. Within the present experimental uncertainties the properties of the new boson are in good agreement with the expectation for a standard model (SM) Higgs boson. The discovered SM-like Higgs boson may however be just one of several Higgs bosons, predicted by theories beyond the SM. Searches for additional neutral Higgs bosons beyond the...Go to contribution page