D -wave heavy-light mesons from QCD sum rules
Abstract
We study the D -wave c ¯s heavy meson doublets (1-,2-) and (2-,3-) using the method of QCD sum rule in the framework of heavy quark effective theory. Choosing the same threshold values ωc around 2.7 Gev, we calculate the masses of the 1- and 3- states. They are mDs1 *=2.81 ±0.10 GeV and mDs3 *=2.85 ±0.08 GeV , consistent with the newly observed Ds1 *(2860 ) and Ds3 *(2860 ) states by LHCb. The masses of their 2- partners are calculated to be 2.82 ±0.10 and 2.81 ±0.08 GeV . The mass splittings within the same doublet are calculated to be mDs2-mDs1 *=0.016 ±0.007 GeV and mDs3 *-mDs2 '=0.039 ±0.014 GeV .
- Publication:
-
Physical Review D
- Pub Date:
- December 2014
- DOI:
- 10.1103/PhysRevD.90.114035
- arXiv:
- arXiv:1410.1727
- Bibcode:
- 2014PhRvD..90k4035Z
- Keywords:
-
- 14.40.Lb;
- 12.38.Lg;
- 12.39.Hg;
- Charmed mesons;
- Other nonperturbative calculations;
- Heavy quark effective theory;
- High Energy Physics - Phenomenology
- E-Print:
- 8 pages, 6 figures, accepted by PRD