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Light-cone distribution amplitudes of a light baryon in large-momentum effective theory

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arxiv 2304.09004 v1 pith:PW7BVRBU submitted 2023-04-18 hep-ph

Zhi-Fu Deng , Chao Han , Wei Wang , Jun Zeng , Jia-Lu Zhang This is my paper · ORCID
classification hep-ph
keywords amplitudesbaryonlightquasi-distributiondistributioneffectivefirstlarge-momentum
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

Momentum distributions of quarks/gluons inside a light baryon in a hard exclusive process are encoded in the light-cone distribution amplitudes (LCDAs). In this work, we point out that the leading twist LCDAs of a light baryon can be obtained through a simulation of a quasi-distribution amplitude calculable on lattice QCD within the framework of the large-momentum effective theory. We calculate the one-loop perturbative contributions to LCDA and quasi-distribution amplitudes and explicitly demonstrate the factorization of quasi-distribution amplitudes at the one-loop level. Based on the perturbative results, we derive the matching kernel in the $\overline{\rm MS}$ scheme and regularization-invariant momentum-subtraction scheme. Our result provides a first step to obtaining the LCDA from first principle lattice QCD calculations in the future.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Light Cone Distribution Amplitude for the $\Lambda$ Baryon from Lattice QCD

    hep-lat 2024-11 conditional novelty 7.0 of 10

    The first lattice QCD extraction of the Lambda baryon's light-cone distribution amplitude via LaMET yields a momentum-fraction distribution peaked at small light-quark momenta.

  2. Updated determination of light-cone distribution amplitudes of octet baryons in lattice QCD

    hep-lat 2024-11 conditional novelty 6.0 of 10

    Updated baryon light-cone distribution amplitude moments are presented using two-loop conversion factors and new low-energy constants; the two-loop anomalous dimensions for one-derivative three-quark operators are com...

  3. Implications on CP violation of charmless three body decays of bottom baryon from the U-spin analysis

    hep-ph 2024-11 conditional novelty 5.0 of 10

    U-spin symmetry converts recent LHCb CP-violation measurements in Lambda_b charmless three-body decays into CP-asymmetry predictions for Xi_b^0 and Sigma^0 channels, plus a null test for the Standard Model.

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