Conveners
Collider phenomenology
- Cheng-Wei Chiang (National Taiwan University / National Center for Theoretical Sciences)
Collider phenomenology
- Mayumi Aoki (Kanazawa University)
Collider phenomenology
- Mayumi Aoki (Kanazawa University)
The measurement of the quartic coupling between a Higgs boson pair and a vector boson pair is expected to be achieved from vector-boson fusion (VBF) production of a Higgs boson pair at the LHC. However, this process involves another unmeasured parameter, the trilinear Higgs self-coupling. Since the LHC cannot avoid the gluon fusion pollution, which becomes severe for anomalous Higgs trilinear...
In the SM, it is assumed that there is only one kind of scalar field, the isodoublet with Y=1/2. On the other hand, many models beyond the SM include extensions of the scalar potential, and some of them predict the charged scalar states. One of interesting candidates is the doubly charged scalar bosons from the isodoublet with Y=3/2. However, phenomenology of them had not been fully...
We investigate the prospect of searching for new physics via the novel signature of same-sign diboson + \slashed{E}_{T} at current and future LHC. We study three new physics models: (i) natural SUSY models, (ii) type-III seesaw model and (iii) type-II seesaw/Georgi-Machacek model. In the first two class of models, this signature arises due to the presence of a singly-charged particle which...
We analyze CP-violating effects in both electric dipole moment (EDM) measurements and future analyses at the Large Hadron Collider (LHC) assuming a two-Higgs-doublet model (2HDM) with “soft” CP violation. Our analysis of EDMs and current LHC constraints shows that, in the case of Type II and Type III 2HDMs, an O(0.1) CP-violating phase in the Yukawa interaction between H1 (the 125 GeV Higgs...
We study capability of the ILC beam dump experiment to search for new physics, comparing the performance of the electron and positron beam dumps. The dark photon, axion-like particles, and light scalar bosons are considered as new physics scenarios, where all the important production mechanisms are included: electron-positron pair-annihilation, Primakoff process, and bremsstrahlung...
We study the prospects of searching for leptophilic gauge bosons (LGBs) associated with a new U(1) gauge symmetries at ILC beam dump experiment. When the LGBs are light and weakly interacting, we show a significant number of signals can occur at ILC beam dump experiment and we can cover the parameter region which has not been explored yet. .
We investigate various search strategies for light vector boson X in O(10) MeV mass range using J/Ψ associated channels at BESIII and Belle II: (i) J/Ψ → ηcX with 1010J/Ψs at BESIII, (ii) J/Ψ(ηc + X) + ℓℓ¯ production at Belle II, and (iii) J/Ψ + X with the displaced vertex in X → e+e− decay are analyzed and the future sensitivities at Belle II with 50 ab−1 luminosity are comprehensively...
We investigate long-lived particles (LLPs) produced in pair from neutral currents and decaying into a displaced electron plus two jets at the LHC, utilizing the proposed minimum ionizing particle timing detector at CMS. We study two benchmark models: the R-parity-violating supersymmetry with the lightest neutralinos and two different $U(1)$ extensions of the standard model with heavy neutral...
