Analyses of decay constants and light-cone distribution amplitudes for s-wave heavy meson

Journal Article · Tue Jun 01 04:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.114024· OSTI ID:21407969

Hwang, C -W ^[1]

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1. Department of Physics, National Kaohsiung Normal University, Kaohsiung, Taiwan 824 (China)

In this paper, a study of light-cone distribution amplitudes (LCDAs) for s-wave heavy meson are presented in both general and heavy quark frameworks. Within the light-front approach, the leading twist light-cone distribution amplitudes, {phi}{sub M}(u), and their relevant decay constants of heavy pseudoscalar and vector mesons, f{sub M}, have simple relations. These relations can be further simplified when the heavy quark limit is taken into consideration. After fixing the parameters that appear in both Gaussian and power-law wave functions, the corresponding decay constants are calculated and compared with those of other theoretical approaches. The curves and the first six {xi}-moments of {phi}{sub M}(u) are plotted and estimated. A conclusion is drawn from these results: Even though the values of the decay constants of the distinct mesons are almost equal, the curves of their LCDAs may have quite large differences, and vice versa. Additionally, in the heavy quark limit, the leading twist LCDAs, {Phi}{sub Qq}({omega}) and {Phi}{sub Qq}({omega}), are compared with the B-meson LCDAs, {psi}{sub +}({omega}), suggested by the other theoretical groups.

• OSTI ID: 21407969
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 11 Vol. 81; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
B MESONS
B QUARKS
BEAUTY MESONS
BEAUTY PARTICLES
BOSONS
C QUARKS
CHARM PARTICLES
DECAY
DISTRIBUTION
ELEMENTARY PARTICLES
FERMIONS
FUNCTIONS
HADRONS
LIGHT CONE
MESONS
PARTIAL WAVES
PARTICLE DECAY
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
QUARKS
S WAVES
SIMULATION
SPACE-TIME
T QUARKS
TOP PARTICLES
VECTOR MESONS
WAVE FUNCTIONS