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

Journal Article · Thu Oct 01 04:00:00 EDT 1998 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.58.074506· OSTI ID:663167

Lewis, R ^[1]; Woloshyn, R M ^[2]

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1. Jefferson Lab, 12000 Jefferson Avenue, Newport News, Virginia 23606 (United States)
2. TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, V6T 2A3 (CANADA)

The masses of {sup 1}S{sub 0} and {sup 3}S{sub 1} 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 0.22 fm and 0.26 fm, 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. {copyright} {ital 1998} {ital The American Physical Society}

• OSTI ID: 663167
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 7 Vol. 58; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ACTION INTEGRAL
BEAUTY PARTICLES
CHARMED MESONS
EXCITED STATES
GROUND STATES
LATTICE FIELD THEORY
MASS
MESONS
QUANTUM CHROMODYNAMICS
QUARKS