Meson form-factors and wave functions with Wilson fermions - INSPIRE

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Meson form-factors and wave functions with Wilson fermions

1992

4 pages

Published in:

Nucl.Phys.B Proc.Suppl. 30 (1993) 419-422

Contribution to:

The International Symposium on Lattice Field Theory: Lattice 92

e-Print:

hep-lat/9211057 [hep-lat]

DOI:

10.1016/0920-5632(93)90241-W

View in:

ADS Abstract Service

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Abstract:

Results for semi-leptonic form-factors for processes like

D \to K l \nu

and the Bethe-Salpeter amplitudes (BSA) for pion and rho mesons are presented. The form-factor data is consistent with previous calculations. We find that the long distance fall-off of BSA for both

\pi

and

\rho

is very well fit by an exponential, but surprisingly the effective mass governing this fall-off is lighter than the pion's. Lastly, by studying the dependence of

\rho

polarization on separation direction we show that there is a measureable

l=2

state in addition to

l=0

in the BSA for the rho. (Talk presented by R. Gupta at LATTICE92. Latex needs macro package espcrc2.sty)

talk
D: semileptonic decay
semileptonic decay: D
form factor
fermion: lattice field theory
gauge field theory: SU(3)
Bethe-Salpeter equation
pi
rho(770): polarization
polarization: rho(770)

References(6)

Figures(0)

[1]

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[2]

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)

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•
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Matthew W. Hecht
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)

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•
DOI:
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[6]

Glueball Masses and String Tension in Lattice QCD

APE

Collaboration

•

M. Albanese
(
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)

et al.

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•
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