Results 91 to 100 of about 107,544 (258)

Exponentiation of soft quark effects from the replica trick

open access: yesJournal of High Energy Physics
In this paper, we show that multiple maximally soft (anti-)quark and gluon emissions exponentiate at the level of either the amplitude or cross-section.
Melissa van Beekveld   +2 more
doaj   +1 more source

Atomic Size Misfit for Electrocatalytic Small Molecule Activation

open access: yesAdvanced Functional Materials, EarlyView.
This review explores the application and mechanisms of atomic size misfit in catalysis for small molecule activation, focusing on how structural defects and electronic properties can effectively lower the energy barriers of chemical bonds in molecules like H2O, CO2, and N2.
Ping Hong   +3 more
wiley   +1 more source

Positive integrands from Feynman integrals in the Minkowski regime

open access: yesJournal of High Energy Physics
We present a method for rewriting dimensionally regulated Feynman parameter integrals in the Minkowski regime as a sum of real, positive integrands multiplied by complex prefactors.
S. P. Jones, A. Olsson, T. W. Stone
doaj   +1 more source

Light-quark masses and renormalons [PDF]

open access: yes, 2001
A brief review of the problem of the determination of light-quark masses from QCD sum rules for the correlators of scalar and pseudoscalar currents is given.
Kataev, A. L.
core   +1 more source

A New Memory Effect in Bulk Crystals of 1T‐TaS2

open access: yesAdvanced Functional Materials, EarlyView.
A new memory effect is discovered in 1T‐TaS₂, appearing as a temperature shift in the metal to insulator transition, coinciding with the recently reported ramp reversal memory. These findings imply that ramp reversal memory is an emergent phenomenon, likely to appear in many different systems that share a few basic properties, which are discussed in ...
Avital Fried   +4 more
wiley   +1 more source

Next-to-next-to-leading-order QCD corrections to double J/ψ production at the B factories

open access: yesJournal of High Energy Physics
In this paper, we study the next-to-next-to-leading-order (NNLO) QCD corrections for the process e + e − → J/ψ + J/ψ at the B factories. By including the NNLO corrections, the cross section turns negative due to the poor convergence of perturbative ...
Xu-Dong Huang   +4 more
doaj   +1 more source

Jet p_T Resummation in Higgs Production at NNLL'+NNLO

open access: yes, 2013
We present predictions for Higgs production via gluon fusion with a p_T veto on jets and with the resummation of jet-veto logarithms at NNLL'+$NNLO order.
Stewart, Iain W.   +3 more
core   +1 more source

Light‐Controlled Reversible Coassembly of Hybrid Functional Nanostructures

open access: yesAdvanced Functional Materials, EarlyView.
Light‐responsive hybrid nanostructures are formed by coassembling azobenzene‐ and PAH‐functionalized nanoparticles through reversible an tunable π interactions. The system enables tunable coupling between distinct components such as gold and magnetite or carbon nanotubes, producing switchable optical and magnetic properties under light and magnetic ...
Michal Sawczyk   +5 more
wiley   +1 more source

Multiparton Cwebs at five loops

open access: yesJournal of High Energy Physics
Scattering amplitudes involving multiple partons are plagued with infrared singularities. The soft singularities of the amplitude are captured by the soft function which is defined as the vacuum expectation value of Wilson line correlators ...
Shubham Mishra   +3 more
doaj   +1 more source

Perturbative Results Without Diagrams

open access: yes, 2007
Higher-order perturbative calculations in Quantum (Field) Theory suffer from the factorial increase of the number of individual diagrams. Here I describe an approach which evaluates the total contribution numerically for finite temperature from the ...
Rosenfelder, R.
core   +1 more source

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