Results 11 to 20 of about 252,628 (218)

Lattice calculation of the pion transition form factor with Nf=2+1 Wilson quarks [PDF]

Physical Review D, 2019
We present a lattice QCD calculation of the double-virtual neutral pion transition form factor, with the goal to cover the kinematic range relevant to hadronic light-by-light scattering in the muon $g-2$.
A. G'erardin, H. Meyer, A. Nyffeler
semanticscholar   +1 more source

Dispersion relation for hadronic light-by-light scattering: pion pole [PDF]

Journal of High Energy Physics, 2018
The pion-pole contribution to hadronic light-by-light scattering in the anomalous magnetic moment of the muon (g − 2)μ is fully determined by the doubly-virtual pion transition form factor.
M. Hoferichter, Bai-Long Hoid, B. Kubis, S. Leupold, S. Schneider   +4 more
semanticscholar   +1 more source

Two-pion contribution to hadronic vacuum polarization [PDF]

Journal of High Energy Physics, 2018
A bstractWe present a detailed analysis of e+e− → π+π− data up to s=1$$ \sqrt{s}=1 $$ GeV in the framework of dispersion relations. Starting from a family of ππ P-wave phase shifts, as derived from a previous Roy-equation analysis of ππ scattering, we ...
G. Colangelo, M. Hoferichter, P. Stoffer
semanticscholar   +1 more source

Generalizing the relativistic quantization condition to include all three-pion isospin channels [PDF]

Journal of High Energy Physics, 2020
We present a generalization of the relativistic, finite-volume, three-particle quantization condition for non-identical pions in isosymmetric QCD. The resulting formalism allows one to use discrete finite-volume energies, determined using lattice QCD, to
M. Hansen, F. Romero-López, S. Sharpe
semanticscholar   +1 more source

Three-pion contribution to hadronic vacuum polarization [PDF]

Journal of High Energy Physics, 2019
We address the contribution of the 3π channel to hadronic vacuum polarization (HVP) using a dispersive representation of the e+e− → 3π amplitude. This channel gives the second-largest individual contribution to the total HVP integral in the anomalous ...
M. Hoferichter, Bai-Long Hoid, B. Kubis
semanticscholar   +1 more source

The neural stability of perception–motor representations affects action outcomes and behavioral adaptation

Psychophysiology, Volume 60, Issue 1, January 2023., 2023
Abstract Actions can fail – even though this is well known, little is known about what distinguishes neurophysiological processes preceding errors and correct actions. In this study, relying on the Theory of Event Coding, we test the assumption that only specific aspects of information coded in EEG activity are relevant for understanding processes ...
Shijing Yu, Moritz Mückschel, Sven Hoffmann, Annet Bluschke, Charlotte Pscherer, Christian Beste   +5 more
wiley   +1 more source

Pion and kaon structure at the electron-ion collider [PDF]

European Physical Journal A, 2019
.Understanding the origin and dynamics of hadron structure and in turn that of atomic nuclei is a central goal of nuclear physics. This challenge entails the questions of how does the roughly 1GeV mass-scale that characterizes atomic nuclei appear; why ...
A. C. Aguilar, Zafir Ahmed, C. Aidala, Salina Ali, V. Andrieux, J. Arrington, A. Bashir, V. Berdnikov, D. Binosi, Lei Chang, Chen Chen, Muyang Chen, J. de Melo, M. Diefenthaler, M. Ding, R. Ent, T. Frederico, F. Gao, R. Gothe, M. Hattawy, T. Hobbs, T. Horn, G. Huber, Shaoyang Jia, C. Keppel, G. Krein, Huey-Wen Lin, C. Mezrag, V. Mokeev, R. Montgomery, H. Moutarde, P. Nadolsky, J. Papavassiliou, Kijun Park, I. Pegg, J. Peng, S. Platchkov, Si-xue Qin, K. Raya, P. Reimer, D. Richards, C. Roberts, J. Rodríguez-Quintero, N. Sato, S. Schmidt, J. Segovia, A. Tadepalli, R. Trotta, Z. Ye, R. Yoshida, Shu-Sheng Xu   +50 more
semanticscholar   +1 more source

How robust is the relationship between neural processing speed and cognitive abilities?

Psychophysiology, Volume 60, Issue 2, February 2023., 2023
Abstract Individual differences in processing speed are consistently related to individual differences in cognitive abilities, but the mechanisms through which a higher processing speed facilitates reasoning remain largely unknown. To identify these mechanisms, researchers have been using latencies of the event‐related potential (ERP) to study how the ...
Anna‐Lena Schubert, Christoph Löffler, Dirk Hagemann, Kathrin Sadus   +3 more
wiley   +1 more source

Within‐ and between‐subject consistency of perceptual segmentation in periodic noise: A combined behavioral tapping and EEG study

Psychophysiology, Volume 60, Issue 2, February 2023., 2023
Abstract It is remarkable that human listeners can perceive periodicity in noise, as the isochronous repetition of a particular noise segment is not accompanied by salient physical cues in the acoustic signal. Previous research suggested that listeners rely on short temporally local and idiosyncratic features to perceptually segment periodic noise ...
Hanna Ringer, Erich Schröger, Sabine Grimm   +2 more
wiley   +1 more source

Valence parton distribution of the pion from lattice QCD: Approaching the continuum limit [PDF]

, 2020
We present a high-statistics lattice QCD determination of the valence parton distribution function (PDF) of pion, with a mass of $300$ MeV, using two very fine lattice spacings of $a=0.06$ fm and $0.04$ fm.
Xiang Gao, Luchang Jin, C. Kallidonis, Nikhil Karthik, S. Mukherjee, P. Petreczky, Charles Shugert, S. Syritsyn, Yong Zhao   +8 more
semanticscholar   +1 more source