Results 51 to 60 of about 771,621 (289)
Automating scattering amplitudes with chirality flow
European Physical Journal C: Particles and Fields, 2022 Recently we introduced the chirality-flow formalism, a method which builds on the spinor-helicity formalism and is inspired by the color-flow idea in QCD.
Andrew Lifson +2 more
doaj +1 more source
Scattering Amplitudes: Celestial and Carrollian
Physical Review Letters, 2022 21 ...
Arjun Bagchi +3 more
openaire +3 more sources
Crossing beyond scattering amplitudes
Journal of High Energy PhysicsWe find that different asymptotic measurements in quantum field theory can be related to one another through new versions of crossing symmetry. Assuming analyticity, we conjecture generalized crossing relations for multi-particle processes and the ...
Simon Caron-Huot +3 more
doaj +1 more source
The sub-leading scattering waveform from amplitudes
Journal of High Energy Physics, 2023 We compute the next-to-leading order term in the scattering waveform of uncharged black holes in classical general relativity and of half-BPS black holes in N $$ \mathcal{N} $$ = 8 supergravity.
Aidan Herderschee, Radu Roiban, Fei Teng
doaj +1 more source
FEBS Open Bio, EarlyView.Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei +3 more
wiley +1 more source
High-precision scattering amplitudes for LHC phenomenology [PDF]
, 2023 In this work, we consider scattering amplitudes relevant for high-precision Large Hadron Collider (LHC) phenomenology. They provide the most fundamental representation of the quantum probability amplitude for the scattering of elementary particles.
Bargieła, Piotr
core +1 more source
Numerical scattering amplitudes with pySecDec
Computer Physics CommunicationsWe present a major update of the program pySecDec, a toolbox for the evaluation of dimensionally regulated parameter integrals. The new version enables the evaluation of multi-loop integrals as well as amplitudes in a highly distributed and flexible way, optionally on GPUs. The program has been optimised and runs up to an order of magnitude faster than
Gudrun Heinrich +5 more
openaire +5 more sources
Optimizing photoexcitation conditions for time‐resolved X‐ray solution scattering experiments
FEBS Open Bio, EarlyView.Time‐resolved X‐ray solution scattering (TR‐XSS) is a powerful technique to visualize how proteins change their structure in real time after light activation. Selecting the right laser photoexcitation conditions—fluence, excitation geometry, and sample refresh rate—is critical to maximize the experimental signal while avoiding unwanted side effects ...
Matteo Levantino
wiley +1 more source
Polytopes, scattering amplitudes, and cohomology [PDF]
, 2014 We introduce a new definition of abstract polytope in any dimension and answer the question of defining and calculating its area. The entire discussion is motivated by studying the expressions arising from super-BCFW recursion on tree-level, n-point ...
Enciso, Michael
core +1 more source
Journal of High Energy PhysicsWe study the structure of scattering amplitudes of massive Kaluza-Klein (KK) states in the compactified 5-dimensional warped gauge and gravity theories.
Yanfeng Hang +3 more
doaj +1 more source