A5031725735- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Computational Physics and Python Applications
- Particle Detector Development and Performance
- Quantum Chromodynamics and Particle Interactions
- Neutrino Physics Research
- High-Energy Particle Collisions Research
- Black Holes and Theoretical Physics
- Cosmology and Gravitation Theories
- Astrophysics and Cosmic Phenomena
- Distributed and Parallel Computing Systems
- Intermetallics and Advanced Alloy Properties
- Noncommutative and Quantum Gravity Theories
- Muon and positron interactions and applications
- Advanced Materials Characterization Techniques
- Topological Materials and Phenomena
- ZnO doping and properties
- Gas Sensing Nanomaterials and Sensors
- Graphene research and applications
- Ga2O3 and related materials
- Superconducting Materials and Applications
- Space Science and Extraterrestrial Life
- Crystallography and Radiation Phenomena
- Metallurgical and Alloy Processes
- Quantum Mechanics and Non-Hermitian Physics
TRIUMF
2021-2024
University of Arizona
2023-2024
Indiana University Bloomington
2018-2022
Argonne National Laboratory
2021-2022
New College of Florida
2016
We propose a correspondence between the description of emergent Lorentz symmetry in condensed-matter systems and established general effective field theory for violation fundamental theories spacetime matter. This has potential implications both directions. illustrate proposal by investigating its consequences spectral transport properties Dirac Weyl semimetals. Particular realizations this framework give rise to nodal spectra with lines rings. demonstrate bulk-boundary bulk topological...
We calculate contributions to the anomalous magnetic moment of muon from heavy neutral and charged Higgs bosons new leptons in two doublet models extended by vectorlike leptons. present detailed predictions with type-II couplings standard model fermions, motivated a $Z_2$ symmetry supersymmetry. In addition, we compare results find that $Z_{2}$ can generate much larger compared model, even orders magnitude due $\tan^{2}\beta$ enhancement, while satisfying current constraints. As consequence,...
In the path towards a muon collider with center of mass energy 10 TeV or more, stage at 3 emerges as an appealing option. Reviewing physics potential such is main purpose this document. order to outline progression performances across stages, few sensitivity projections for higher are also presented. There many opportunities probing new collider. Some them in common extensively documented case CLIC stage, and include measuring Higgs trilinear coupling testing possible composite nature boson...
We study di-Higgs and tri-Higgs boson productions at a muon collider as functions of the modification Yukawa coupling resulting from new physics parametrized by dimension-six mass operator. show that signal can be used to observe deviation in 10% level for <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:msqrt><a:mrow><a:mi>s</a:mi></a:mrow></a:msqrt><a:mo>=</a:mo><a:mn>10</a:mn><a:mtext> </a:mtext><a:mtext> </a:mtext><a:mi>TeV</a:mi></a:mrow></a:math> 3.5%...
We show that in a two Higgs doublet model type-II extended by vectorlike leptons the contributions from heavy neutral and charged bosons to anomalous magnetic moment of muon simultaneously feature chiral enhancement masses new $\tan^2 \beta$ couplings bosons. Assuming moderate values Yukawa couplings, not exceeding one, can remain perturbative very high energy scales, measured value $g-2$ be explained within one standard deviation even with 6.5 TeV or 20 Allowing near perturbativity limit,...
The KOTO experiment has recently performed a search for neutral Kaons decaying into pions and pair of neutrinos. Three events were observed in the signal region, with an expected background about 0.05. Since no clear systematic errors have been found, excess decay KL→ π0ν $$ \overline{v} is quite intriguing. One possibility to explain this anomaly would be presence scalar 𝜙 mass order pion inducing decays π0𝜙 which mimic signal. A coupling muons Standard Model Higgs could also muon anomalous...
We show that new physics explanations of the muon $g\ensuremath{-}2$ anomaly by contributions leptons mediated standard model Higgs boson necessarily lead to large rates for ${\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}\ensuremath{\rightarrow}hh$ and ${\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}\ensuremath{\rightarrow}hhh$ irrespectively details or scale physics. For with same quantum numbers as leptons, cross sections are expected be about 240 ab independently...
We show that any new interaction resulting in a chirally enhanced contribution to the muon magnetic moment necessarily modifies decay rate of Higgs boson pairs or generates electric dipole moment. These three observables are highly correlated, and near future measurements h→μ^{+}μ^{-} will carve an ellipse plane moments for such model. Together with many models able explain g-2 anomaly can be efficiently tested.
A bstract New dark sectors consisting of exotic fields that couple only very feebly to the Standard Model (SM) have strong theoretical motivation and may be relevant explaining abundance matter (DM). An important question for such is how they connect SM. For a sector with new gauge interaction, natural connection arises from heavy vector-like fermions charged under both visible groups. The charges imply one or more them stable in absence additional sources symmetry breaking. generic...
We calculate chirally enhanced corrections to the muon's electric and magnetic dipole moments in two-Higgs-doublet models extended by vector-like leptons, we explore a sharp correlation between $h\ensuremath{\rightarrow}{\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}$ these models. Among many detailed predictions, for model with new leptons same quantum numbers as standard find that $0.38\ensuremath{\lesssim}\mathrm{tan}\ensuremath{\beta}\ensuremath{\lesssim}21$ necessarily...
We study corrections to observables related the muon in context of models new physics which generate mass-enhanced dipole moments. Working Standard Model effective theory, we demonstrate a correlation between decay Higgs boson muons, and magnetic electric moments generated by dominant matching corrections. This defines novel way classify predictions for wide variety based on pattern deviations these three observables. In particular, when applied specific find that this has potential rule out...
A bstract We study 4 b + 2 τ and 1 signatures of heavy neutral charged Higgs bosons originating from cascade decays pair-produced new quarks. Decays vectorlike quarks through Higgses can easily dominate in the two doublet model type-II, studied are common to many possible decay chains. design search strategies for these final states discuss mass ranges that be explored at Large Hadron Collider as functions branching ratios a independent way. further combine results with similar focusing on...
We demonstrate the potential of fully leptonic cascade decays a heavy neutral Higgs boson through vectorlike leptons as simultaneous probe for extended sectors and extra matter particles at LHC. The processes we explore are unique in that their event topologies lead to di-boson-like final states with lepton pair which does not reconstruct mass gauge boson. By recasting existing $2\ell + E_T^{\rm miss}$ $3/4\ell$ searches channels using run2 data from LHC obtain $\textit{model independent}$...
In the MSSM extended by a complete vectorlike family, precise top, bottom and tau Yukawa coupling unification can be achieved assuming SUSY threshold corrections which are typical for comparable superpartner masses. Furthermore, is possible with large unified coupling, implying that all three fermion masses simultaneously close to their IR fixed points. Assuming couplings of order one or larger, preferred common scale new physics (superpartners matter) in 3 TeV 30 range, larger favoring...
A bstract We study the search for electroweakinos at 13 TeV LHC in case of heavy scalar superpartners. consider both direct production mode and one associated with decay Higgs bosons, concentrate on light Higgsinos Binos. In this case, searches becomes more challenging than Wino scenario. mode, we use current experimental to set reach these particles larger luminosities, emphasize relevance considering neutral gauge boson modes second third lightest neutralino. show complementarity ones...
We use the IR fixed point predictions for gauge couplings and top Yukawa coupling in minimal supersymmetric model (MSSM) extended with vectorlike families to infer scale of matter superpartners. quote results several extensions MSSM present detail one complete family. find that a unified ${\ensuremath{\alpha}}_{G}>0.3$ or superpartners are expected within 1.7 TeV (2.5 TeV) based on all three being simultaneously 1.5% (5%) from observed values. This range extends about 4...
We report on an intriguing observation that the values of all couplings in standard model, except those related to first two generations, can be understood from IR fixed point structure renormalization group equations minimal supersymmetric model extended by one complete vectorlike family with scale new physics a multi-TeV range.
A bstract Searches for weakly interacting particles is one of the main goals high luminosity LHC run. In this work we study well motivated cases electroweakinos with mostly Wino and Bino components. We show relevance squark induced t-channel production in defining cross section hence reach. Moreover, a realistic evaluation decay branching ratios strong dependence on sign μ and, negative values , relative size ratio to gaugino masses compared tan β . Overall, unless it kinematically...
In extensions of two Higgs doublet models with vectorlike quarks, the decays quarks may easily be dominated by cascade through charged or neutral bosons leading to signatures 6 top bottom quarks. Since quark also contain a common signature for many possible decay chains is in final state. We present search strategy focusing on this state and find mass ranges that can explored at Large Hadron Collider. Among other results, sensitivity bosons, extending about 2 TeV, stands out when compared...
We report on an interesting realization of the QCD axion, with mass in range $\mathcal{O}(10)$ MeV. It has previously been shown that although this scenario is stringently constrained from multiple sources, model remains viable for a parameters leads to explanation Atomki experiment anomaly. In article we study more detail additional constraints proceeding recent low energy experiments and compatibility allowed parameter space one leading consistency most measurements electron anomalous...
There has been an increasing interest in exploring quantities associated with quantum information at colliders. We perform a detailed analysis describing how to measure the discord top anti-top state Large Hadron Collider (LHC). While for pure states, discord, entanglement, and Bell nonlocality all probe same correlations, mixed states they different aspects of correlations. The particular, is interesting because it aims encapsulate correlations between systems that cannot have classical...
Direct searches for dark matter with large-scale noble liquid detectors have become sensitive enough to detect the coherent scattering of local neutrinos. This will a very challenging background discovery in planned future detectors. For mass above 10 GeV, dominant neutrino backgrounds on Earth are atmospheric neutrinos created by cosmic ray collisions atmosphere. In contrast, Moon has almost no atmosphere and nearly all rays incident first collide lunar surface, producing different...
We investigate a concrete scenario of light scalar with mass around 1 MeV which can be connected to the origin neutrino masses and simultaneously survive current bounds on relativistic degrees freedom in early universe. A feeble coupling Standard Model neutrinos relax stringent decays photons inferred from measured value ${N}_{\mathrm{eff}}$. Interestingly, we find that such whose diphoton is generated by tree-level muon similar strength as Higgs boson explain longstanding discrepancy...