Abstract
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 $$ \overline{\textrm{MS}} $$
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.
Publisher
Springer Science and Business Media LLC
Subject
Nuclear and High Energy Physics
Reference55 articles.
1. LHCb collaboration, Determination of the quark coupling strength |Vub| using baryonic decays, Nature Phys. 11 (2015) 743 [arXiv:1504.01568] [INSPIRE].
2. LHCb collaboration, Observation of the decay $$ {\Lambda}_b^0\to p{K}^{-}{\mu}^{+}{\mu}^{-} $$ and a search for CP violation, JHEP 06 (2017) 108 [arXiv:1703.00256] [INSPIRE].
3. V.L. Chernyak and I.R. Zhitnitsky, Nucleon Wave Function and Nucleon Form-Factors in QCD, Nucl. Phys. B 246 (1984) 52 [INSPIRE].
4. I.D. King and C.T. Sachrajda, Nucleon Wave Functions and QCD Sum Rules, Nucl. Phys. B 279 (1987) 785 [INSPIRE].
5. V.L. Chernyak, A.A. Ogloblin and I.R. Zhitnitsky, Wave Functions of Octet Baryons, Yad. Fiz. 48 (1988) 1410 [INSPIRE].
Cited by
7 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献