Heavy quark effective theory sum rules for higher excited charmed mesons: With a view on D-sJ(2632)

作者：Huang, MQ^*; Wang, DW

来源：PHYSICAL REVIEW D, 2005, 71(11): 114015.

DOI：10.1103/PhysRevD.71.114015

Mass of the excited (1(-), 2(-)), (2(-), 3(-)) and (2(+), 3(+)) c (s) over bar states is calculated to the 1/m(Q) order within the framework of the heavy quark effective theory using QCD sum rule method. The obtained kinetic energy is comparable to the c-quark mass, thus results in large 1/m(Q) correction for the c-quark case. With the sum rules for the chromomagnetic interaction term, the mass splitting for the three doublets is presented. Based on the predicted mass spectrum the exotic D-sJ(2632) state, if really exists, is unlikely to be a conventional orbitally higher excited c (s) over bar state, although the experimental center lies within the range for the mass of the 1(-) meson.

• 出版日期2005-6
• 单位中国人民解放军国防科学技术大学