SCOAP3 Repository 9 records found  Search took 0.02 seconds. 
1. Distribution amplitudes of heavy-light mesons / Binosi, Daniele ; Chang, Lei ; Ding, Minghui ; Gao, Fei ; et al
A symmetry-preserving approach to the continuum bound-state problem in quantum field theory is used to calculate the masses, leptonic decay constants and light-front distribution amplitudes of empirically accessible heavy-light mesons. [...]
Published in Physics letters B 790 (2019) 257-262 10.1016/j.physletb.2019.01.033
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2. Parton distribution amplitudes: Revealing correlations within the proton and Roper / Mezrag, Cédric ; Segovia, Jorge ; Chang, Lei ; Roberts, Craig D.
Constrained by solutions of the continuum three-valence-body bound-state equations, we use perturbation theory integral representations (PTIRs) to develop algebraic Ansätze for the Faddeev wave functions of the proton and its first radial excitation, delivering therewith a quantum field theory calculation of the pointwise behaviour of their leading-twist parton distribution amplitudes (PDAs). [...]
Published in Physics letters B (2018) 10.1016/j.physletb.2018.06.062
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3. Bayesian extraction of the parton distribution amplitude from the Bethe–Salpeter wave function / Gao, Fei ; Chang, Lei ; Liu, Yu-xin
We propose a new numerical method to compute the parton distribution amplitude (PDA) from the Euclidean Bethe–Salpeter wave function. [...]
Published in Physics letters B (2017) 10.1016/j.physletb.2017.04.077
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4. Leading-twist parton distribution amplitudes of S -wave heavy-quarkonia / Ding, Minghui ; Gao, Fei ; Chang, Lei ; Liu, Yu-Xin ; et al
The leading-twist parton distribution amplitudes (PDAs) of ground-state S01 and S13 cc¯ - and bb¯ -quarkonia are calculated using a symmetry-preserving continuum treatment of the meson bound-state problem which unifies the properties of these heavy-quark systems with those of light-quark bound-states, including QCD's Goldstone modes. [...]
Published in Physics letters B (2015) 10.1016/j.physletb.2015.11.075
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5. Pion valence-quark parton distribution function / Chang, Lei ; Thomas, Anthony W.
Within the Dyson–Schwinger equation formulation of QCD, a rainbow ladder truncation is used to calculate the pion valence-quark distribution function (PDF). [...]
Published in Physics letters B (2015) 10.1016/j.physletb.2015.08.036
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6. Bridging a gap between continuum-QCD and ab initio predictions of hadron observables / Binosi, Daniele ; Chang, Lei ; Papavassiliou, Joannis ; Roberts, Craig D.
Within contemporary hadron physics there are two common methods for determining the momentum-dependence of the interaction between quarks: the top-down approach, which works toward an ab initio computation of the interaction via direct analysis of the gauge-sector gap equations; and the bottom-up scheme, which aims to infer the interaction by fitting data within a well-defined truncation of those equations in the matter sector that are relevant to bound-state properties. [...]
Published in Physics letters B (2015) 10.1016/j.physletb.2015.01.031
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7. Basic features of the pion valence-quark distribution function / Chang, Lei ; Mezrag, Cédric ; Moutarde, Hervé ; Roberts, Craig D. ; et al
The impulse-approximation expression used hitherto to define the pion's valence-quark distribution function is flawed because it omits contributions from the gluons which bind quarks into the pion. [...]
Published in Physics letters B 737 (2014) 23-29 10.1016/j.physletb.2014.08.009
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8. Flavour symmetry breaking in the kaon parton distribution amplitude / Shi, Chao ; Chang, Lei ; Roberts, Craig D. ; Schmidt, Sebastian M. ; et al
We compute the kaon's valence-quark (twist-two parton) distribution amplitude (PDA) by projecting its Poincaré-covariant Bethe–Salpeter wave-function onto the light-front. [...]
Published in Physics letters B 738 (2014) 512-518 10.1016/j.physletb.2014.07.057
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9. Distribution amplitudes of light-quark mesons from lattice QCD / Segovia, Jorge ; Chang, Lei ; Cloët, Ian C. ; Roberts, Craig D. ; et al
We exploit a method introduced recently to determine parton distribution amplitudes (PDAs) from minimal information in order to obtain light-quark pseudoscalar and vector meson PDAs from the limited number of moments produced by numerical simulations of lattice-regularised QCD. [...]
Published in Physics letters B 731 (2014) 13-18 10.1016/j.physletb.2014.02.006
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See also: similar author names
1 Chang, L.
1 Chang, L. C.
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