The widths for pionic decays of the lowest two excited doublets(0^(+),1^(+))and(1^(+),2^(+))of heavy mesons are studied with quantum Chromodynamics sum rules in the heavy quark effective theory.The interpolating curre...The widths for pionic decays of the lowest two excited doublets(0^(+),1^(+))and(1^(+),2^(+))of heavy mesons are studied with quantum Chromodynamics sum rules in the heavy quark effective theory.The interpolating currents used allow us to distinguish the two 1^(+)states without contamination in the infinite mass limit.The soft pion approximation is not used in the calculations.展开更多
基金Supported by the National Natural Science Foundation of China under Grant No.19335043.
文摘The widths for pionic decays of the lowest two excited doublets(0^(+),1^(+))and(1^(+),2^(+))of heavy mesons are studied with quantum Chromodynamics sum rules in the heavy quark effective theory.The interpolating currents used allow us to distinguish the two 1^(+)states without contamination in the infinite mass limit.The soft pion approximation is not used in the calculations.
