A5083061602- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Black Holes and Theoretical Physics
- Cosmology and Gravitation Theories
- Neutrino Physics Research
- Quantum Chromodynamics and Particle Interactions
- Astrophysics and Cosmic Phenomena
- Computational Physics and Python Applications
- Particle Detector Development and Performance
- High-Energy Particle Collisions Research
- Distributed and Parallel Computing Systems
- International Science and Diplomacy
- Noncommutative and Quantum Gravity Theories
- Multi-Agent Systems and Negotiation
- Relativity and Gravitational Theory
- Privacy-Preserving Technologies in Data
- Astro and Planetary Science
- Age of Information Optimization
- Advanced NMR Techniques and Applications
- Model-Driven Software Engineering Techniques
- Gamma-ray bursts and supernovae
- Rural development and sustainability
- demographic modeling and climate adaptation
- Particle Accelerators and Free-Electron Lasers
- Scientific Research and Discoveries
University of Wisconsin–Madison
2015-2025
University of Chicago
2015
University of Florida
2005-2007
European Organization for Nuclear Research
2002-2005
University of Michigan
1999-2001
University of Pennsylvania
1997-1999
The conclusions of the Physics Working Group international scoping study a future Neutrino Factory and super-beam facility (the ISS) are presented. ISS was carried by community between NuFact05, 7th International Workshop on Factories Superbeams, Laboratori Nazionali di Frascati, Rome, June 21-26, 2005) NuFact06 (Ivine, California, 24{30 August 2006). physics case for an extensive experimental programme to understand properties neutrino is presented role high-precision measurements...
We consider electroweak symmetry breaking in supersymmetric models with an extra nonanomalous ${\mathrm{U}(1)}^{\ensuremath{'}}$ gauge and standard-model singlet scalar $S$. For appropriate charges the forbids elementary $\ensuremath{\mu}$ term, but effective is generated by VEV of $S$, leading to a natural solution problem. There are variety scenarios acceptably small $Z$-${Z}^{\ensuremath{'}}$ mixing other phenomenological consequences, all which involve some not excessive fine-tuning. One...
This report summarizes the work of Energy Frontier Higgs Boson working group 2013 Community Summer Study (Snowmass). We identify key elements a precision physics program and document potential future experimental facilities as elucidated during Snowmass study. study couplings to gauge boson fermion pairs, double production for self-coupling, its quantum numbers $CP$-mixing in couplings, mass total width, prospects direct searches additional bosons extensions Standard Model. Our includes...
We investigate the possibility of using icosahedral symmetry as a family group in lepton sector. The rotational group, which is isomorphic to ${A}_{5}$, alternating five elements, provides natural context explore (among other possibilities) intriguing hypothesis that solar neutrino mixing angle governed by golden ratio, $\ensuremath{\phi}=(1+\sqrt{5})/2$. present basic toolbox for model building symmetry, including explicit representation matrices and tensor product rules. As simple...
We simulate the measurement of triscalar Higgs coupling at LHC(8,14) via pair production h(125 GeV). find that most promising hh final state is bb gamma gamma. account for deviations from its SM value and study effects this on cross-section distributions with cut-based multivariate methods. Our fit to matrix element LHC(14) 3 ab^-1 yields a 40% uncertainty in range 25-80% uncertainties non-SM values.
We study the implications of interpreting recent muon g-2 deviation from Standard Model prediction as evidence for virtual superpartners, with very general calculations that include effects phases and are consistent all relevant constraints. The most important result is there upper limits on masses: at least one superpartner mass below about 350 GeV (for theoretically preferred value tan(beta)=35) may be produced Fermilab Tevatron in upcoming run, must chargino, neutralino, slepton masses...
We examine the soft supersymmetry breaking parameters that result from various ways of embedding standard model (SM) on D-branes within type I string picture, allowing to have large $\mathrm{CP}$-violating phases. One naturally provides relations among satisfy electron and neutron electric dipole moment constraints even with phases, while other embeddings phases are not allowed. The results generally suggest how low energy data might teach us about Planck scale physics.
From the "top-down" approach we investigate physics implications of class D- and F- flat directions formed from non-Abelian singlets which are proven to all orders in nonrenormalizable superpotential, for a prototype quasi-realistic free fermionic string model with standard gauge group three families (CHL5). These have at least an additional U(1)' unbroken scale. For each direction, complete set effective mass terms trilinear superpotential observable sector computed VEV's fields direction....
We develop techniques to classify D- and F-flat directions for N=1 supersymmetric string vacua of the perturbative heterotic theory, which possess an anomalous U(1) gauge group at tree level. Genus-one corrections generate a Fayet-Iliopoulos term D-term U(1)_A, is canceled by non-zero vacuum expectation values (VEVs) certain massless multiplets in such way that broken, while maintaining F-flatness effective field theory. A systematic analysis flat given VEVs non-Abelian singlets, are...
We present a correlated analysis for the $ΔB =1, 2$ processes which occur via $b\to s$ transitions within models with family non-universal $U(1)^\prime$. take model-independent approach, and only require universal charges first second generations small fermion mixing angles. The results of our show that this class models, anomalies in $B_s - \bar B_s$ time-dependent CP asymmetries penguin-dominated $B_d \to (π, ϕ, η', ρ, ω, f_0)K_S$ decays can be accommodated.
The discovery at the LHC of a scalar particle with properties that are so far consistent SM Higgs boson is one most important advances in history physics. challenge future collider experiments to determine whether its couplings will show deviations from Higgs, as this would indicate new physics TeV scale, and also probe flavor structure Yukawa couplings. As benchmark alternative we consider generic two doublet model (2HDM) analyze precision which LHC14, an ILC250, 500, 1000 GeV 125 Muon...
We present a methodology for performing scans of beyond the standard model (BSM) parameter spaces with reinforcement learning. identify novel procedure using graph neural networks that is capable exploring models without user specifying fixed particle content, allowing broad classes BSM to be explored—in theory, technique applicable nearly any space prespecified gauge group. provide generic by which suitable grammar can developed features user-specified symmetry groups and finite number...
We address intermediate scales within a class of string models. The occur due to the SM singlets S_i acquiring non-zero VEVs radiative breaking; mass-square (m_i)^2 is driven negative at mu_{RAD} order(1) Yukawa couplings exotic particles (calculable in models). actual VEV depends on relative magnitude non-renormalizable terms type (S_i)^{K+3}/M^K superpotential. mainly consider case which are charged under an additional non-anomalous U(1) gauge symmetry and along F- D-flat directions....
We perform a model-independent analysis of the possible residual Klein and generalized CP symmetries associated with arbitrary lepton mixing angles in case that there are three light Majorana neutrino species. This approach emphasizes unique role phases provides useful framework which to discuss origin Dirac phase scenarios spontaneously broken flavor symmetries. The method is shown reproduce known examples literature based on tribimaximal bitrimaximal patterns, used investigate these issues...
We present a general phenomenological framework for dialing between gravity mediation, gauge and anomaly mediation. The approach is motivated from recent developments in moduli stabilization, which suggest that mediated terms can be effectively loop suppressed thus comparable to terms. gauginos exhibit mirage unification behavior at "deflected" scale, gluinos are often the lightest colored sparticles. provides rich setting explore generalized supersymmetry breaking CERN Large Hadron Collider.
We study the consistency of two Higgs doublet models in light new bosonic particle discovery at LHC. work within a general setup that we call 2HDM-X, which quarks couple to both scalar doublets with aligned couplings such flavor-changing neutral currents are absent tree level. The 2HDM-X encompasses traditional Type I, II, lepton specific, and flipped models, but also provides for more possibilities. best fit current data suppressed tau signal b bbar Standard Model strength is given by...
We study a two Higgs doublet model augmented by scalar dark matter particle that provides an excellent fit to the LHC data and Fermi-LAT 135 GeV line. The heavy CP-even boson, which predominantly mediates annihilation scattering, must have coupling weak gauge bosons at or below percent level suppress continuum gamma-ray spectrum limit from anti-proton constrained PAMELA data. Discovering excluding this boson with mass between 265 280 enhanced diphoton branching ratio is crucial test scenario.
After the extraordinary discovery of Higgs boson at LHC, next goal is to pin down its underlying dynamics by measuring self-couplings, along with couplings gauge and matter particles. As a prototype model new physics in scalar sector, we consider two-Higgs doublet $CP$ conservation, evaluate prospects for trilinear among $CP$-even bosons $h$ $H$ (${\ensuremath{\lambda}}^{hhh}$, ${\ensuremath{\lambda}}^{hhH}$, ${\ensuremath{\lambda}}^{hHH}$) LHC14. The continuum resonant production pairs,...
We advocate a search for an extended scalar sector at the LHC via $hh$ production, where $h$ is 125 GeV Higgs boson. A resonance feature in invariant mass smoking gun of $s$-channel heavy resonance, $H$. With one decaying to two photons and other $b$-quarks, resonant signal may be discoverable above continuum background $M_H<$ 1 TeV. The product top Yukawa couplings can measured better than $10-20\%$ accuracy, its sign inferred from lineshape interference effects.