Photoproduction of vector mesons off nucleons near threshold - INSPIRE

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Photoproduction of vector mesons off nucleons near threshold

Bengt Friman
(
- Darmstadt, GSI
)
,
Madeleine Soyeur
(
- Saclay
)

Nov, 1995

19 pages

Published in:

Nucl.Phys.A 600 (1996) 477-490

e-Print:

nucl-th/9601028 [nucl-th]

DOI:

10.1016/0375-9474(96)00011-5

Report number:

GSI-PREPRINT-95-68

View in:

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Abstract:

We propose a simple meson-exchange model of the photoproduction of

\rho

- and

\omega

-mesons off protons near threshold (

E_\gamma

less than 2 GeV). This model provides a good description of the available data and implies a large

\rho

-nucleon interaction in the scalar channel (

\sigma

-exchange). We use this phenomenological interaction to estimate the leading contribution to the self-energy of

\rho

-mesons in matter. The implications of our calculation for experimental studies of the

\rho

-meson mass in nuclei are discussed.

Note:

14 pages, 11 Postscript figures, uses elsart.sty, epsfig.sty, to appear in Nucl. Phys. A Report-no: GSI 95-68

13.60.L
Vector mesons
Photoproduction
photon nucleon: exclusive reaction
rho(770)0: photoproduction
photoproduction: rho(770)0
omega(783): photoproduction
photoproduction: omega(783)
threshold
scalar meson: exchange

References(24)

Figures(0)

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