A5058781785- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Quantum Chromodynamics and Particle Interactions
- Cosmology and Gravitation Theories
- Neutrino Physics Research
- High-Energy Particle Collisions Research
- Nuclear physics research studies
- Computational Physics and Python Applications
- Particle Detector Development and Performance
- Black Holes and Theoretical Physics
- Atomic and Subatomic Physics Research
- Particle Accelerators and Free-Electron Lasers
- Superconducting Materials and Applications
- Quantum, superfluid, helium dynamics
- International Science and Diplomacy
- Atomic and Molecular Physics
- Physics of Superconductivity and Magnetism
- Electron and X-Ray Spectroscopy Techniques
- Advanced NMR Techniques and Applications
- Nuclear Physics and Applications
- Distributed and Parallel Computing Systems
- Astrophysics and Cosmic Phenomena
- X-ray Spectroscopy and Fluorescence Analysis
- Pulsars and Gravitational Waves Research
- Quantum and Classical Electrodynamics
California Institute of Technology
2015-2024
Shanghai Jiao Tong University
2019-2024
University of Massachusetts Amherst
2015-2024
University of Michigan–Ann Arbor
2019
Perimeter Institute
2018
University of Victoria
2018
University of Wisconsin–Madison
2007-2014
Oak Ridge National Laboratory
2009
University of California, Santa Cruz
2007
University of Connecticut
1998-2004
This White Paper presents the science case of an Electron-Ion Collider (EIC), focused on structure and interactions gluon-dominated matter, with intent to articulate it broader nuclear community. It was commissioned by managements Brookhaven National Laboratory (BNL) Thomas Jefferson Accelerator Facility (JLab) objective presenting a summary scientific opportunities goals EIC as follow-up 2007 NSAC Long Range plan. document is culmination community-wide effort in following series workshops...
The available data on nuclear fusion cross sections important to energy generation in the Sun and other hydrogen-burning stars solar neutrino production are summarized critically evaluated. Recommended values uncertainties provided for key sections, a recommended spectrum is given $^{8}\mathrm{B}$ neutrinos. Opportunities further increasing precision of rates also discussed, including new facilities, experimental techniques, improvements theory. This review, which summarizes conclusions...
Electroweak baryogenesis (EWBG) remains a theoretically attractive and experimentally testable scenario for explaining the cosmic baryon asymmetry. We review recent progress in computations of asymmetry within this framework discuss their phenomenological consequences. pay particular attention to methods analyzing electroweak phase transition calculating CP-violating asymmetries, development Standard Model extensions that may provide necessary ingredients EWBG, searches corresponding...
Gauge singlet extensions of the standard model (SM) scalar sector may help remedy its theoretical and phenomenological shortcomings while solving outstanding problems in cosmology. Depending on symmetries potential, such provide a viable candidate for observed relic density cold dark matter or strong first order electroweak phase transition needed baryogenesis. Using simplest extension SM with one real field, we analyze generic implications singlet-extended Higgs boson phenomenology at Large...
The existence of a nonvanishing electric dipole moment for an elementary particle, atom or molecule, would indicate violation time reversal symmetry and parity-symmetry violation. latter could help resolve the question observed matter-antimatter asymmetry in Universe. This review provides broad overview theoretical motivations interpretations as well details about experimental techniques, experiments, prospects.
We analyze a simple extension of the standard model (SM) obtained by adding complex singlet to scalar sector (cxSM). show that cxSM can contain one or two viable cold dark matter candidates and conditions on parameters potential yield observed relic density. When contains global $U(1)$ symmetry is both softly spontaneously broken, it candidate ingredients necessary for strong first order electroweak phase transition as needed baryogenesis. also study implications discovery Higgs boson at...
The discovery of the Higgs boson in 2012, by ATLAS and CMS experiments, was a success achieved with only percent entire dataset foreseen for LHC. It opened landscape possibilities study properties, Electroweak Symmetry breaking Standard Model general, as well new avenues probing physics beyond Model. Six years after discovery, conspicuously larger collected during LHC Run 2 at 13 TeV centre-of-mass energy, theory experimental particle communities have started meticulous exploration potential...
We analyze the universal radiative correction Δ_{R}^{V} to neutron and superallowed nuclear β decay by expressing hadronic γW-box contribution in terms of a dispersion relation, which we identify as an integral over first Nachtmann moment γW interference structure function F_{3}^{(0)}. By connecting needed input existing data on neutrino antineutrino scattering, obtain updated value Δ_{R}^{V}=0.02467(22), wherein uncertainty is reduced. Assuming other standard model theoretical calculations...
We update the phenomenology of gauge-singlet extensions Standard Model scalar sector and their implications for electroweak phase transition. Considering introduction one real singlet to potential, we analyze present constraints on potential parameters from Higgs coupling measurements at Large Hadron Collider (LHC) precision observables kinematic regime in which no new decay modes arise. then show how future boson signal strengths self-coupling could probe parameter space associated with a...
Particles beyond the Standard Model (SM) can generically have lifetimes that are long compared to SM particles at weak scale. When produced experiments such as Large Hadron Collider (LHC) CERN, these long-lived (LLPs) decay far from interaction vertex of primary proton-proton collision. Such LLP signatures distinct those promptly decaying targeted by majority searches for new physics LHC, often requiring customized techniques identify, example, significantly displaced vertices, tracks with...
We propose a novel dispersive treatment of the so-called inner radiative correction to neutron and nuclear $\ensuremath{\beta}$ decay. show that it requires knowledge parity-violating structure function ${F}_{3}^{(0)}$ arises from interference axial vector charged current isoscalar part electromagnetic current. By isospin symmetry, we relate this inelastic scattering neutrinos antineutrinos. Applying new data-driven analysis obtain new, more precise evaluation for universal...
The minimal extension of the scalar sector standard model contains an additional real field with no gauge quantum numbers. Such a does not couple to quarks and leptons directly but rather through its mixing Higgs field. We examine phenomenology this focusing on region parameter space where new particle is significantly lighter than usual has small it. In most properties are independent details potential. Furthermore that mostly can be drastically modified since dominant branching ratio may...
We determine the weak mixing angle in $\overline{\mathrm{MS}}$ scheme, ${sin}^{2}{\stackrel{^}{\ensuremath{\theta}}}_{W}(\ensuremath{\mu})$, at energy scales $\ensuremath{\mu}$ relevant for present and future low-energy electroweak measurements. relate renormalization group evolution of ${sin}^{2}{\stackrel{^}{\ensuremath{\theta}}}_{W}(\ensuremath{\mu})$ to corresponding $\stackrel{^}{\ensuremath{\alpha}}(\ensuremath{\mu})$ include higher-order terms ${\ensuremath{\alpha}}_{s}$...
This White Paper presents the science case of an Electron-Ion Collider (EIC), focused on structure and interactions gluon-dominated matter, with intent to articulate it broader nuclear community. It was commissioned by managements Brookhaven National Laboratory (BNL) Thomas Jefferson Accelerator Facility (JLab) objective presenting a summary scientific opportunities goals EIC as follow-up 2007 NSAC Long Range plan. document is culmination community-wide effort in following series workshops...
We analyze one-loop vacuum stability, perturbativity, and phenomenological constraints on a complex singlet extension of the Standard Model (SM) scalar sector containing dark matter candidate. study stability considerations using gauge-invariant approach compare with conventional gauge-dependent procedure. show that, if new physics exists at TeV scale, analysis experimental from sector, electroweak precision data, LEP allow both Higgs-like in mass range allowed by latest results CMS ATLAS...
The Proceedings of the 2011 workshop on Fundamental Physics at Intensity Frontier. Science opportunities intensity frontier are identified and described in areas heavy quarks, charged leptons, neutrinos, proton decay, new light weakly-coupled particles, nucleons, nuclei, atoms.
We derive model-independent, "naturalness" upper bounds on the magnetic moments \mu_\nu of Dirac neutrinos generated by physics above scale electroweak symmetry breaking. In absence fine-tuning effective operator coefficients, we find that current information neutrino mass implies |\mu_\nu | < 10^(-14) Bohr magnetons. This bound is several orders magnitude stronger than those obtained from analyses solar and reactor data astrophysical observations.
We perform a global analysis of searches for the permanent electric dipole moments (EDMs) neutron, neutral atoms, and molecules in terms six leptonic, semileptonic, nonleptonic interactions involving photons, electrons, pions, nucleons. By translating results into fundamental charge-conjugation-parity symmetry (CP) violating effective through dimension standard model particles, we obtain rough lower bounds on scale beyond CP-violating ranging from 1.5 TeV electron EDM to 1300 nuclear...
We investigate resonant di-Higgs production as a means of probing extended scalar sectors that include 125 GeV Standard Model-like Higgs boson. For concreteness, we consider gauge singlet portal scenario leading to two mixed doublet-singlet states, ${h}_{1,2}$. ${m}_{{h}_{2}}>2{m}_{{h}_{1}}$, the process $pp\ensuremath{\rightarrow}{h}_{2}\ensuremath{\rightarrow}{h}_{1}{h}_{1}$ will lead final states associated with decaying pair scalars. focus on ${h}_{2}$ via gluon fusion and...