Nuclear annihilation by antinucleons
- Auburn Univ., AL (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
We examine the momentum dependence of $$\bar{p}$$p and $$\bar{n}$$p annihilation cross sections by considering the transmission through a nuclear potential and the $$\bar {p}$$p Coulomb interaction. Compared to the $$\bar{n}$$p annihilation cross section, the $$\bar{p}$$p annihilation cross section is significantly enhanced by the Coulomb interaction for projectile momenta below plab < 500 MeV/c, and the two annihilation cross sections approach the Pomeranchuk's equality limit [JETP 30, 423 (1956)] at plab ~500 MeV/c. Using these elementary cross sections as the basic input data, the extended Glauber model is employed to evaluate the annihilation cross sections for $$\bar{n}$$ and $$\bar{p}$$ interaction with nuclei and the results compare well with experimental data.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1237156
- Alternate ID(s):
- OSTI ID: 1235952
- Journal Information:
- Physical Review C, Vol. 93, Issue 1; ISSN 2469-9985
- Publisher:
- APSCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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