Pion-Pole Contribution to Hadronic Light-By-Light Scattering in the Anomalous Magnetic Moment of the Muon. [PDF]
Physical Review Letters, 2018 The π^{0} pole constitutes the lowest-lying singularity of the hadronic light-by-light (HLBL) tensor, and thus, it provides the leading contribution in a dispersive approach to HLBL scattering in the anomalous magnetic moment of the muon (g-2)_{μ}. It is
M. Hoferichter +4 more
semanticscholar +1 more source
First direct lattice-QCD calculation of the x -dependence of the pion parton distribution function [PDF]
Physical Review D, 2018 We present the first direct lattice-QCD calculation of the Bjorken-$x$ dependence of the valence quark distribution in the pion. Using large-momentum effective theory (LaMET), we calculate the boosted pion state with long Wilson link operators.
Jian-Hui Zhang +5 more
semanticscholar +1 more source
Pion distribution amplitude from Euclidean correlation functions: Exploring universality and higher-twist effects [PDF]
Physical Review D, 2018 Building upon our recent study [G. S. Bali et al., Eur. Phys. J. C 78, 217 (2018)], we investigate the feasibility of calculating the pion distribution amplitude from suitably chosen Euclidean correlation functions at large momentum.
G. Bali +9 more
semanticscholar +1 more source
Multi-Pion Correlation Effects on Two-Pion Interferometry [PDF]
J.Phys. G21 (1995) 847-859, 1994 A general derivation of the multi-pion correlation function for completely chaotic source is given. Its effects on the pion multiplicity distribution, two-pion interferometry are studied. A generalized multi-pion correlation function for a partially coherent source is also discussed.
arxiv +1 more source
Bootstrapping QCD Using Pion Scattering Amplitudes. [PDF]
Physical Review Letters, 2018 We consider the S-matrix bootstrap of four-dimensional scattering amplitudes with O(3) symmetry and no bound states. We explore the allowed space of scattering lengths which parametrize the interaction strength at threshold of the various scattering ...
A. Guerrieri, J. Penedones, P. Vieira
semanticscholar +1 more source
Multi-pion Bose-Einstein Correlation effects on three-pion interferometry [PDF]
Phys.Lett. B406 (1997) 366-372, 1998 Multi-pion correlations effect on three-pion interferometry is studied. It is shown that multi-pion correlations decrease both the apparent radius of the source and the coherent source parameter derived from three-pion interferometry. The data of OPAL group are discussed.
arxiv +1 more source
Pion light-cone wave function and pion distribution amplitude in the Nambu-Jona-Lasinio model [PDF]
, 2002 We compute the pion light-cone wave function and the pion quark distribution amplitude in the Nambu-Jona-Lasinio model. We use the Pauli-Villars regularization method and as a result the distribution amplitude satisfies proper normalization and crossing ...
A. Blin +53 more
core +2 more sources
Constraining axionlike particles from rare pion decays [PDF]
Physical Review D, 2019 Ultraviolet completions for axion-like particles (ALPs) lighter than the neutral pion generically induce ALP-neutral pion mixing, and are therefore sensitive to direct constraints on the mixing angle.
W. Altmannshofer, S. Gori, D. Robinson
semanticscholar +1 more source
In-medium pion valence distributions in a light-front model
Physics Letters B, 2017 Pion valence distributions in nuclear medium and vacuum are studied in a light-front constituent quark model. The in-medium input for studying the pion properties is calculated by the quark-meson coupling model.
J.P.B.C. de Melo, K. Tsushima, I. Ahmed
doaj +1 more source
Multi-pion correlations in high energy collisions [PDF]
Phys.Rev.C58:18-22,1998, 1998 Any-order pion inclusive distribution for a chaotic source in high energy collisions are given which can be used in both theory and experiment to analyze any-order pion interferometry. Multi-pion correlations effects on two-pion and three-pion interferometry are discussed.
arxiv +1 more source