Absorption of the $\omega$ and $\phi$ Mesons in Nuclei - INSPIRE

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Absorption of the $\omega$ and $\phi$ Mesons in Nuclei

CLAS

Collaboration

Jun, 2010

6 pages

Published in:

Phys.Rev.Lett. 105 (2010) 112301

e-Print:

1006.3361 [nucl-ex]

DOI:

10.1103/PhysRevLett.105.112301

Report number:

JLAB-PHY-10-1156

View in:

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Abstract: (arXiv)

Due to their long lifetimes, the

\omega

and

\phi

mesons are the ideal candidates for the study of possible modifications of the in-medium meson-nucleon interaction through their absorption inside the nucleus. During the E01-112 experiment at the Thomas Jefferson National Accelerator Facility, the mesons were photoproduced from

^{2}

H, C, Ti, Fe, and Pb targets. This paper reports the first measurement of the ratio of nuclear transparencies for the

e^{+}e^{-}

channel. The ratios indicate larger in-medium widths compared with what have been reported in other reaction channels.

Note:

6 pages, 4 figures

24.85.+p
11.30.Rd
14.40.-n
nucleus: transparency
meson nucleon: interaction
vector meson: photoproduction
vector meson: absorption
omega(783): width
Phi(1020): width
Jefferson Lab

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