O(1/M{sup 3}) effects for heavy-light mesons in lattice NRQCD

Journal Article · Sun Mar 01 04:00:00 EST 1998 · Phys.Rev. D58 (1998) 074506

DOI:https://doi.org/10.1103/PhysRevD.58.074506· OSTI ID:755904

Lewis, Randy; Woloshyn, R M

The masses of spin-singlet and spin-triplet S-wave mesons containing a single heavy quark are computed in the quenched approximation. The light quark action and gauge field action are both classically-improved and tadpole-improved, and the couplings to the heavy quark are organized by the 1/M expansion of tadpole-improved NRQCD. At each of two lattice spacings, near 0.22fm and 0.26fm, meson masses are obtained for heavy quarks spanning the region between charmed and bottom mesons. Results up to O(1/M), O(1/M{sup 2})and O(1/M{sup 3}) are displayed separately, so that the convergence of the heavy quark expansion can be discussed. Also, the effect of each term in the O(1/M{sup 3}) contribution is computed individually. For bottom mesons the 1/M-expansion appears to be satisfactory, but the situation for charmed mesons is less clear.

• Research Organization: Thomas Jefferson National Accelerator Facility, Newport News, VA (US)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC05-84ER40150
• OSTI ID: 755904
• Report Number(s): DOE/ER/40150-1482; JLAB-THY-98-05; TRI-PP-98-03; hep-lat/9803004
• Journal Information: Phys.Rev. D58 (1998) 074506, Journal Name: Phys.Rev. D58 (1998) 074506 Journal Issue: 7 Vol. 58; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
GAUGE INVARIANCE
LATTICE FIELD THEORY
MASS
MESONS
QUANTUM CHROMODYNAMICS
S WAVES