Absorption of the {omega} and {phi} Mesons in Nuclei
- Canisius College, Buffalo, New York 14208 (United States)
- The George Washington University, Washington, D.C. 20052 (United States)
- University of South Carolina, Columbia, South Carolina 29208 (United States)
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606 (United States)
Because of 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 {sup 2}H, C, Ti, Fe, and Pb targets. This Letter reports the first measurement of the ratio of nuclear transparencies for the e{sup +}e{sup -} channel. The ratios indicate larger in-medium widths compared with what have been reported in other reaction channels. The absorption of the {omega} meson is stronger than that reported by the CBELSA-TAPS experiment and cannot be explained by recent theoretical models.
- OSTI ID:
- 21471007
- Journal Information:
- Physical Review Letters, Vol. 105, Issue 11; Other Information: DOI: 10.1103/PhysRevLett.105.112301; (c) 2010 American Institute of Physics; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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