A5033084003- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Black Holes and Theoretical Physics
- Quantum Chromodynamics and Particle Interactions
- Distributed and Parallel Computing Systems
- Topic Modeling
- Natural Language Processing Techniques
- High-Energy Particle Collisions Research
- Computational Physics and Python Applications
- Speech and dialogue systems
- Scientific Computing and Data Management
- Atomic and Subatomic Physics Research
- Particle Detector Development and Performance
- Machine Learning in Bioinformatics
- Neutrino Physics Research
- Particle Accelerators and Free-Electron Lasers
- Advanced Thermodynamics and Statistical Mechanics
- Human Mobility and Location-Based Analysis
- Advanced Operator Algebra Research
- Astronomy and Astrophysical Research
- Fault Detection and Control Systems
- Relativity and Gravitational Theory
- Quantum Mechanics and Applications
- Multi-Agent Systems and Negotiation
University of Houston
2023
New York University
2016-2021
University of North Carolina Health Care
2021
University of North Carolina at Chapel Hill
2021
Bloomberg (United States)
2020
University of Milano-Bicocca
2018
University of California, Berkeley
2013-2015
Lawrence Berkeley National Laboratory
2013-2015
University of California System
2013-2015
Laboratoire de Physique Subatomique et de Cosmologie
2014
We clarify questions related to the convergence of operator product expansion and conformal block decomposition in unitary field theories (for any number spacetime dimensions). In particular, we explain why these expansions are convergent a finite region. also show that is exponentially fast, sense operators dimension above $\ensuremath{\Delta}$ contribute correlation functions at most $\mathrm{exp}(\ensuremath{-}a\ensuremath{\Delta})$. Here constant $a>0$ depends on positions insertions...
We introduce a model-independent strategy to study narrow resonances which we apply heavy vector triplet of the Standard Model (SM) group for illustration. The method is based on simplified phenomenological Lagrangian reproduces large class explicit models. Firstly, this allows us derive robust features and, conversely, identify peculiarities different realizations. Secondly, limits σ × BR can be converted into bounds few relevant parameters in fully analytic way, allowing an interpretation...
We show that high energy measurements of Drell–Yan at the LHC can serve as electroweak precision tests. Dimension-6 operators, from Standard Model Effective Field Theory, modify behavior gauge boson propagators. Existing dilepton invariant mass spectrum, neutral current 8 TeV, have comparable sensitivity to LEP. propose measuring transverse spectrum charged Drell–Yan, which surpass LEP already with TeV data. The 13 will elevate tests a new frontier.
A thermally decoupled hidden sector of particles, with a mass gap, generically enters phase cannibalism in the early Universe. The Standard Model becomes exponentially colder than sector. We propose cannibal dark matter framework, where resides cannibalizing relic density set by 2-to-2 annihilations. Observable signals include boosted rate for indirect detection, new relativistic degrees freedom, and warm matter.
Dark matter, X, may be generated by new physics at the TeV scale during an early matter-dominated (MD) era that ends temperature TR ≪ TeV. Compared to conventional radiation-dominated (RD) results, yields from both Freeze-Out and Freeze-In processes are greatly suppressed dilution entropy production, making less plausible while allowing successful with a much larger coupling strength. is typically dominated decay of particle B thermal bath, → X. For large fraction relevant cosmological...
We propose that the dark matter abundance is set by decoupling of inelastic scattering instead annihilations. This coscattering mechanism generically realized if scatters against states comparable mass from thermal bath. Coscattering points to exponentially lighter than weak scale and has a suppressed annihilation rate, avoiding stringent constraints indirect detection. Dark upscatters into whose late decays can lead observable distortions blackbody spectrum cosmic microwave background.
We study the impact of Higgs precision measurements at a high-energy and high-luminosity linear electron positron collider, such as CLIC or ILC, on parameter space strongly interacting boson. Some combination anomalous couplings are already tightly constrained by current fits to electroweak observables. However, even small deviations in cross sections single double production, mere detection triple final state, can help establish whether it is composite state not emerges...
A hidden sector with a mass gap undergoes an epoch of cannibalism if number changing interactions are active when the temperature drops below lightest particle. During cannibalism, decreases only logarithmically scale factor. We consider possibility that dark matter resides in underwent and has relic density set by freeze-out two-to-two annihilations. identify three novel phases, depending on behavior freezes out. cannibal phase, annihilations decouple while is cannibalizing. chemical total...
We propose a framework in which the QCD axion has an exponentially large coupling to photons, relying on “clockwork” mechanism. discuss impact of present and future experiments parameter space model. In addition axion, model predicts number pseudoscalars can be light observable at LHC. most favorable scenario, Dark Matter will give signal multiple detection pseudo-scalars discovered LHC, allowing us determine parameters
This paper summarizes the physics potential of CLIC high-energy e+e- linear collider. It provides input to Snowmass 2013 process for energy-frontier working groups on The Higgs Boson (HE1), Precision Study Electroweak Interactions (HE2), Fully Understanding Top Quark (HE3), as well Path Beyond Standard Model -- New Particles, Forces, and Dimensions (HE4). is accompanied by a describing accelerator study, submitted Frontier Capabilities group process.
We present the activities of "New Physics" working group for "Physics at TeV Colliders" workshop (Les Houches, France, 3--21 June, 2013). Our report includes new computational tool developments, studies implications Higgs boson discovery on physics, important signatures searches natural physics LHC, flavour aspects and assessments interplay between direct dark matter LHC.
The Large Hadron Collider (LHC) is sensitive to new heavy gauge bosons that produce narrow peaks in the dilepton invariant mass spectrum up about $m_{Z'}\sim 5$ TeV. $Z'$s are too directly can reveal their presence through interference with Standard Model production. We show LHC significantly extend reach for such by performing precision measurements of shape spectrum. high luminosity exclude, 95$\%$ confidence, as $m_{Z'} \sim 10-20$ TeV couple coupling strength $g_{Z'} 1-2$.
We explore the dark matter interpretation of anomalies claimed by DAMA and cogent experiments, in conjunction with various null direct-detection experiments. An independent analysis data is employed several experimental astrophysical uncertainties are considered. Various phenomenological models studied, including isospin violating interactions, momentum-dependent form factors, velocity-dependent inelastic scatterings (endothermic exothermic) channeling. find that severe tension between...
New physics, that is too heavy to be produced directly, can leave measurable imprints on the tails of kinematic distributions at LHC. We use energetic QCD processes perform novel measurements Standard Model (SM) Effective Field Theory. show dijet invariant mass spectrum, and inclusive jet transverse momentum are sensitive a dimension 6 operator modifies gluon propagator high energies. The dominant effect constructive or destructive interference with SM production. compare differential...