Pion and Kaon Distribution Amplitudes from Lattice QCD.

Autor: Hua J; Guangdong Provincial Key Laboratory of Nuclear Science, Institute of Quantum Matter, South China Normal University, Guangzhou 510006, China.; Guangdong-Hong Kong Joint Laboratory of Quantum Matter, Southern Nuclear Science Computing Center, South China Normal University, Guangzhou 510006, China.; INPAC, Shanghai Key Laboratory for Particle Physics and Cosmology, Key Laboratory for Particle Astrophysics and Cosmology (MOE), School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China., Chu MH; INPAC, Shanghai Key Laboratory for Particle Physics and Cosmology, Key Laboratory for Particle Astrophysics and Cosmology (MOE), School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China.; Yang Yuanqing Scientic Computering Center, Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai 200240, China., He FC; CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China., He JC; School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China.; Department of Physics, University of Maryland, College Park, Maryland 20742, USA., Ji X; Department of Physics, University of Maryland, College Park, Maryland 20742, USA., Schäfer A; Institut für Theoretische Physik, Universität Regensburg, D-93040 Regensburg, Germany., Su Y; Department of Physics, University of Maryland, College Park, Maryland 20742, USA., Sun P; Department of Physics and Institute of Theoretical Physics, Nanjing Normal University, Nanjing, Jiangsu, 210023, China., Wang W; INPAC, Shanghai Key Laboratory for Particle Physics and Cosmology, Key Laboratory for Particle Astrophysics and Cosmology (MOE), School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China., Xu J; INPAC, Shanghai Key Laboratory for Particle Physics and Cosmology, Key Laboratory for Particle Astrophysics and Cosmology (MOE), School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China.; School of Physics and Microelectronics, Zhengzhou University, Zhengzhou, Henan 450001, China., Yang YB; CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China.; School of Fundamental Physics and Mathematical Sciences, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310024, China.; International Centre for Theoretical Physics Asia-Pacific, Beijing/Hangzhou, China.; School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China., Yao F; Center of Advanced Quantum Studies, Department of Physics, Beijing Normal University, Beijing 100875, China., Zhang JH; Center of Advanced Quantum Studies, Department of Physics, Beijing Normal University, Beijing 100875, China.; School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen 518172, China., Zhang QA; School of Physics, Beihang University, Beijing 102206, China.
Jazyk: angličtina
Zdroj: Physical review letters [Phys Rev Lett] 2022 Sep 23; Vol. 129 (13), pp. 132001.
DOI: 10.1103/PhysRevLett.129.132001
Abstrakt: We present a state-of-the-art lattice QCD calculation of the pion and kaon light-cone distribution amplitudes (DAs) using large-momentum effective theory. The calculation is done at three lattice spacings a≈{0.06,0.09,0.12}  fm and physical pion and kaon masses, with the meson momenta P_{z}={1.29,1.72,2.15}  GeV. The result is nonperturbatively renormalized in a recently proposed hybrid scheme with self-renormalization, and extrapolated reliably to the continuum as well as the infinite momentum limit. We find a significant deviation of the pion and kaon DAs from the asymptotic form, and a large SU(3) flavor breaking effect in the kaon DA.
Databáze: MEDLINE