Light-cone distribution amplitudes of octet baryons from lattice QCD

Abstract

We present lattice QCD results for the wave function normalization constants and the first moments of the distribution amplitudes for the lowest-lying baryon octet. The analysis is based on a large number of $N_f=2+1$ ensembles comprising multiple trajectories in the quark mass plane including physical pion (and kaon) masses, large volumes, and, most importantly, five different lattice spacings down to $a=0.039\mathrm{fm}$. This allows us to perform a controlled extrapolation to the continuum and infinite volume limits by a simultaneous fit to all available data. We demonstrate that the formerly observed violation of flavor symmetry breaking constraints can, indeed, be attributed to discretization effects that vanish in the continuum limit.

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• Branching Fractions of $B$ Meson Decays in Mesogenesis
• Light-front wave functions of mesons, baryons and pentaquarks, with topology-induced local 4-quark interaction
• Estimates of exchange topological contributions and $CP$-violating observables in ${\Lambda }_b\to \Lambda \varphi$ decay
• Charmonium decays of beauty baryons in the perturbative QCD approach
• Light Cone Distribution Amplitude for the $\Lambda$ Baryon from Lattice QCD
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• Baryon decays $J/\psi \to B\bar{B}$ within the QCD factorisation framework
• Mixing effects of $\eta -{\eta }^{\prime }$ in ${\Lambda }_b\to \Lambda {\eta }^{{(}^{\prime })}$ decays
• Semi-leptonic three-body proton decay modes from light-cone sum rules
• Estimates of the isospin-violating ${\Lambda }_b\to {\Sigma }^0\varphi ,{\Sigma }^{0}J/\psi$ decays and the $\Sigma -\Lambda$ mixing
• The Continuum and Leading Twist Limits of Parton Distribution Functions in Lattice QCD
• Hybrid renormalization in lattice calculation of baryon LCDAs
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