A5031693054- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Particle Detector Development and Performance
- High-Energy Particle Collisions Research
- Black Holes and Theoretical Physics
- Neutrino Physics Research
- Computational Physics and Python Applications
- Quantum Chromodynamics and Particle Interactions
- International Science and Diplomacy
- Scientific Computing and Data Management
- High voltage insulation and dielectric phenomena
- Non-Destructive Testing Techniques
- Distributed and Parallel Computing Systems
- Bacteriophages and microbial interactions
- Nanocluster Synthesis and Applications
Eötvös Loránd University
2020-2024
Kyushu Institute of Technology
2022
University of Padua
2019-2021
Istituto Nazionale di Fisica Nucleare, Sezione di Padova
2019-2020
Technion – Israel Institute of Technology
2015-2018
The University of Tokyo
2010-2015
Kavli Institute for the Physics and Mathematics of the Universe
2013-2015
There is more than 3σ deviation between the experimental and theoretical results of muon g − 2. When interpreted in SUSY extensions SM, this anomaly suggests that some particles have a mass order 100 GeV. We study searches for those at LHC with particular attention to In particular, recent on non-colored are investigated parameter region where 2 explained. The analysis independent details models. Future prospects collider also discussed.
We study the muon anomalous magnetic moment (muon g-2) and Higgs boson mass in a simple extension of minimal supersymmetric (SUSY) Standard Model with extra vector-like matters, frameworks gauge mediated SUSY breaking (GMSB) models gravity mediation (mSUGRA) models. It is shown that deviation g-2 relatively heavy can be simultaneously explained large tan-beta region. (i) In GMSB models, more than 135 GeV (130 GeV) region where consistent experimental value at 2 sigma (1 sigma) level, while...
Recently the ATLAS and CMS collaborations presented preliminary results of standard model Higgs searches reported excesses events for a boson at 124--126 GeV. Such mass can be naturally realized, simultaneously explaining muon $g\ensuremath{-}2$ anomaly, in gauge-mediated SUSY-breaking models with extra vectorlike matters. Upper bounds are obtained on gluino mass, ${m}_{\stackrel{\texttildelow{}}{g}}\ensuremath{\lesssim}1.2(1.8)\text{ }\text{ }\mathrm{TeV}$, quark...
In this letter, we show that the wino-Higgsino dark matter (DM) is detectable in near future DM direct detection experiments for almost all consistent parameter space spontaneously broken supergravity (SUGRA) if muon g−2 anomaly explained by loop diagrams. We also point out present and LHC can exclude or confirm SUGRA explanation of observed anomaly.
The relic abundance of heavy stable particles charged under a confining gauge group can be depleted by second stage annihilations near the deconfinement temperature. This proceeds via formation quarkonia-like states, in which pair subsequently annihilates. size quarkonium cross section was subject some debate. We estimate this simple toy model. dominant process viewed as rearrangement and light quarks, leading to geometric hadronic size. In contrast, processes only constituents are involved...
A bstract The Fermilab Muon g − 2 collaboration recently announced the first result of measurement muon anomalous magnetic moment ( 2), which confirmed previous at Brookhaven National Laboratory and thus discrepancy with its Standard Model prediction. We revisit low-scale supersymmetric models that are naturally capable to solve anomaly, focusing on two distinct scenarios: chargino-contribution dominated pure-bino-contribution scenarios. It is shown slepton pair-production searches have...
A bstract Light dark matter particles may be produced in electron and positron beam dumps of the International Linear Collider (ILC). We propose an experimental setup to search for such events, Beam-Dump eXperiment at ILC (ILC-BDX). The consists a muon shield placed behind dump, followed by multi-layer tracker electromagnetic calorimeter. calorimeter can detect recoils due elastic scattering while is sensitive decays excited dark-sector states into particle. study production, decay sub-GeV...
We study supersymmetric (SUSY) models in which the muon g −2 discrepancy and dark matter relic abundance are simultaneously explained. The − 2 discrepancy, or a 3σ deviation between experimental theoretical results of anomalous magnetic moment, can be resolved by SUSY models, implies at least three multiplets have masses $$ \mathcal{O}(100) GeV. In particular, with bino, higgsino slepton having GeV not only capable to explain...
The type-I seesaw represents one of the most popular extensions Standard Model. Previous studies this model have mostly focused on its ability to explain neutrino oscillations as well generation baryon asymmetry via leptogenesis. Recently, it has been pointed out that can also account for origin electroweak scale due heavy-neutrino threshold corrections Higgs potential. In paper, we show first time all these features are compatible with each other. Integrating a set heavy Majorana neutrinos...
We study phenomenological aspects of the MSSM with extra U(1) gauge symmetry. find that lightest Higgs boson mass can be increased up to 125 GeV, without introducing a large SUSY scale or A-terms, in frameworks CMSSM and mediated breaking (GMSB) models. This scenario simultaneously explain discrepancy muon anomalous magnetic moment (muon g-2) at 1 sigma level, both frameworks, U(1)-extended CMSSM/GMSB In case, dark matter abundance also explained.
Supersymmetric models with sub-TeV charginos and sleptons have been a candidate for the origin of long-standing discrepancy in muon anomalous magnetic moment (g − 2). By gathering all available LHC Run 2 results, we investigate latest constraints on that explain anomaly by their chargino contribution to g 2. It is shown parameter regions where are lighter than strongly disfavored. In contrast, find $$ {m}_{{\tilde{\mu}}_{\mathrm{L}}}\underset{\sim }{>}{m}_{{\tilde{\chi}}_1^{\pm }} still...
A bstract We study capability of the ILC beam dump experiment to search for new physics, comparing performance electron and positron dumps. The dark photon, axion-like particles, light scalar bosons are considered as physics scenarios, where all important production mechanisms included: electron-positron pair-annihilation, Primakoff process, bremsstrahlung productions. find that has higher sensitivity than past experiments, with having slightly better particles which produced by pair-annihilation.
In supersymmetric standard models R-parity violating couplings are severely constrained, since otherwise they would erase the existing baryon asymmetry before electroweak transition. It is often claimed that this cosmological constraint can be circumvented if number and one of lepton flavor numbers sufficiently conserved in these couplings, because B/3−Li for each separately by sphaleron process. We discuss effect violation on B−L conservation, show even tiny slepton mixing angles θ12≳(10−4)...
We explore the parameter space of a U(1) extension standard model -- also called super-weak from point view explaining observed dark matter energy density in Universe. The new particle spectrum contains complex scalar singlet and three right-handed neutrinos, among which lightest one is candidate. both freeze-in freeze-out mechanisms production. In cases, we find regions plane coupling vs. mass gauge boson that are not excluded by current experimental constraints. These distinct for will be...
A bstract In this paper we explore the possibility of explaining muon g − 2 anomaly in various types supersymmetric extensions Standard Model. particular, investigate and compare phenomenological constraints MSSM with stable neutralino other scenarios where is unstable. For latter case study Gauge Mediated SUSY Breaking (GMSB) scenario very light gravitino UDD -type R-Parity Violating (RPV) scenario. neutralino, parameter region favoured by ( 2) μ strongly constrained relic abundance dark...
We propose a CP-safe gravity mediation model, where the phases of Higgs B parameter, scalar trilinear couplings and gaugino mass parameters are all aligned. Since dangerous CP violating suppressed, we now safe to consider low-energy SUSY scenarios. As an application, model explaining observed muon $g-2$ anomaly. The property originates in two simple assumptions: breaking K\"ahler potential shift symmetry field $Z$. result symmetry, imaginary part $Z$ behaves as QCD axion, leading intriguing...
MSSM4G models, in which the minimal supersymmetric standard model is extended to include vectorlike copies of particles, are promising possibilities for weak-scale supersymmetry. In particular, two called QUE and QDEE, realize major virtues supersymmetry (naturalness consistent with 125 GeV Higgs boson, gauge coupling unification, thermal relic neutralino dark matter) without need fine-tuned relations between particle masses. We determine implications these models matter collider searches....
We study the possibility to determine supersymmetric (SUSY) contribution muon anomalous magnetic dipole moment by using ILC measurements of properties superparticles. Assuming that is as large current discrepancy between result Brookhaven E821 experiment and standard-model prediction, we discuss how accurately SUSY can be reconstructed. will show that, in a sample point, reconstruction performed with accuracy ~ 13 % center-of-mass energy 500 GeV integrated luminosity 500-1000 fb-1.
We study the prospects for long-lived charged particle (LLCP) searches at current and future LHC runs a 100 TeV pp collider, using Drell-Yan slepton pair production as an example. Because momentum measurements become more challenging very energetic particles, we carefully treat expected resolution. At same time, novel feature of collisions is significant energy loss muons in calorimeter. use this to help discriminate between LLCPs. find that 14 with integrated luminosity 3 ab−1 can probe...