Results 41 to 50 of about 2,798 (204)

On factorisation schemes for the electron parton distribution functions in QED

open access: yesJournal of High Energy Physics, 2021
The electron, positron, and photon Parton Distribution Functions (PDFs) of the unpolarised electron have recently been computed at the next-to-leading logarithmic accuracy in QED, by adopting the MS ¯ $$ \overline{\mathrm{MS}} $$ factorisation scheme. We
S. Frixione
doaj   +1 more source

Unpolarized QED parton distribution functions in NLO [PDF]

open access: yes, 2023
Perturbative solutions for unpolarized QED parton distribution and fragmentation functions are presented explicitly in the next-to-leading logarithmic approximation.
Arbuzov, A. B., Voznaya, U. E.
core   +1 more source

Radiative corrections to the forward-backward asymmetry in e + e − → π + π −

open access: yesJournal of High Energy Physics, 2022
We present a calculation of the C-odd radiative corrections to e + e − → π + π − in a dispersive formalism, concentrating on the leading pion-pole contribution in the virtual box diagrams.
Gilberto Colangelo   +3 more
doaj   +1 more source

Precision measurement of the B[0 over s]–[– over B][0 over s] oscillation frequency with the decay B[0 over s]→D[– over s]π[superscript +] [PDF]

open access: yes, 2013
A key ingredient to searches for physics beyond the Standard Model in B[0 over s] mixing phenomena is the measurement of the B[0 over s]–[– over B][0 over s] oscillation frequency, which is equivalent to the mass difference Δm[subscript s] of the B[0 ...
Hennessy K.   +999 more
core   +1 more source

Increasing the precision for Z production at colliders: mixed QCD-QED effects [PDF]

open access: yesProceedings of European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2019), 2020
In this talk, we describe the recent progress on the inclusion of mixed QCD-QED corrections for collider observables. In particular, we developed a formalism to extend $q_T$-resummation to deal with simultaneous emission of gluons and photons. We applied it to $Z$ production at colliders, and briefly discuss extensions to more complicated final states.
openaire   +2 more sources

Unveiling atomic electron motion effects in e + e − high energy collisions at NA64

open access: yesJournal of High Energy Physics
Atomic electron motion is responsible for well-studied effects observed in low-energy (MeV-scale) processes. Recently, interest in this phenomenon has also emerged within the high-energy physics community, due to its potential to increase significantly ...
Fernando Arias-Aragón   +2 more
doaj   +1 more source

Two-loop master integrals for heavy-to-light form factors of two different massive fermions

open access: yesJournal of High Energy Physics, 2018
We calculate the full set of the two-loop master integrals for heavy-to-light form factors of two different massive fermions for arbitrary momentum transfer in NNLO QCD or QED corrections.
Long-Bin Chen
doaj   +1 more source

Diffusion‐Based Generative Model With Scaffold‐Hopping Strategy Yields Highly Potent Bioactive Molecules

open access: yesAdvanced Science, EarlyView.
SMarT‐Diff introduces a multi‐objective generative paradigm that integrates scaffold hopping with structure‐aware scoring to enable controlled exploration beyond the training distribution. The framework consistently balances drug‐likeness, synthesizes accessibility and bioactivity, yielding chemically diverse candidates with enhanced properties.
Yuwei Yang   +8 more
wiley   +1 more source

Regulatory harmonization: Evolution, globalization and future directions

open access: yesBritish Journal of Clinical Pharmacology, EarlyView.
Regulatory harmonization has become an increasingly important and accepted approach to streamline regulatory review processes and expedite access to safe, effective and high‐quality medicines globally. This review explores the evolution and current status of regulatory harmonization, convergence and reliance initiatives.
Orin Chisholm   +2 more
wiley   +1 more source

Leading-order QED effects in the ground electronic state of molecular hydrogen [PDF]

open access: yes, 2023
We perform highly accurate calculations of the leading order QED correction to the ground electronic state of molecular hydrogen. Numerical results are obtained for a grid of the internuclear distances $R=0-10$ au with the relative precision of about $10^
Siłkowski, Michał   +3 more
core   +2 more sources

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