Conveners
PD1/PD2: Theoretical Developments / Global Interpretations
- Sven Heinemeyer (CSIC (Madrid, ES))
- Stefania Gori (UC Santa Cruz)
- Junping Tian (The University of Tokyo)
- Nathaniel Craig (UC Santa Barbara)
- Jürgen Reuter (DESY Hamburg, Germany)
- Dirk Zerwas (Université Paris-Saclay (FR))
- Shigeki Matsumoto (Kavli IPMU)
- Roberto Franceschini (Rome 3 U.)
- Christophe Grojean (DESY (Hamburg) and Humboldt University (Berlin))
In Standard Model (SM) Higgs Boson pair production initiated by photons ($\gamma \gamma \to h h$) is loop-generated process and thereby is very sensitive to any new couplings and particles that may come in loops. Composite Higgs Models (CHMs) provide an alternate mechanism to address the hierarchy problem of SM where Higgs could be a bound state of a strongly interacting sector instead of...
The naturalness problem motivates new physics beyond the Standard Model (SM). The Higgs sector in neutral naturalness models provides a portal to the hidden QCD sector, and thus Higgs coupling measurements play a central role in exploring the model parameter space. We investigate a class of neutral naturalness models, in which the Higgs boson is a pseudo-Goldstone boson with the radial mode at...
We study the process $e^+ e^- \to \ell^+ \ell^- h\left(b\bar{b}\right)$ considering centre-of-mass
energies $\sqrt{s} = \{250, 1000, 3000\} \, \text{GeV}$ using resolved- and boosted-analysis
techniques to reconstruct the Higgs boson. We show that this process probes the tensor
structure of the $hZZ^*/hZ\bar{f}f$ couplings via Higgs-strahlung and $Z$-boson fusion in the
dimension-six...
We study the measurement of Higgs boson self-couplings in $2\rightarrow 3$ vector boson scattering processes in proton colliders and lepton colliders in the framework of Standard Model Effective Field Theory, taking the examples of $W^{\pm}_L W^{\pm}_L\rightarrow W^{\pm}_L W^{\pm}_L h$ and $W^+_L W^-_L\rightarrow h h h$. First, by taking Goldstone equivalence theorem and analysing the...
Beyond standard model (BSM) particles should be included in effective field theory in order to compute the scattering amplitudes involving these extra particles. We formulate an extension of Higgs effective field theory which contains arbitrary number of scalar and fermion fields with arbitrary electric and chromoelectric charges. The BSM Higgs sector is described by using the non-linear sigma...
Electroweakly Interacting Massive Particles (EWIMP) is one of the best dark matter candidates as represented by Wino or Higgsino in SUSY. There are several methods to search for such particles at collider, and one of them is using indirect probe, which is as follows. EWIMP modifies the self energy of electroweak gauge bosons via loop contribution, and this result in a slight change in the...
