Nuclear annihilation by antinucleons
Abstract
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.
- Authors:
-
- Auburn Univ., AL (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1237156
- Alternate Identifier(s):
- OSTI ID: 1235952
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review C
- Additional Journal Information:
- Journal Volume: 93; Journal Issue: 1; Journal ID: ISSN 2469-9985
- Publisher:
- APS
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS
Citation Formats
Lee, Teck-Ghee, and Wong, Cheuk-Yin. Nuclear annihilation by antinucleons. United States: N. p., 2016.
Web. doi:10.1103/PhysRevC.93.014616.
Lee, Teck-Ghee, & Wong, Cheuk-Yin. Nuclear annihilation by antinucleons. United States. https://doi.org/10.1103/PhysRevC.93.014616
Lee, Teck-Ghee, and Wong, Cheuk-Yin. Mon .
"Nuclear annihilation by antinucleons". United States. https://doi.org/10.1103/PhysRevC.93.014616. https://www.osti.gov/servlets/purl/1237156.
@article{osti_1237156,
title = {Nuclear annihilation by antinucleons},
author = {Lee, Teck-Ghee and Wong, Cheuk-Yin},
abstractNote = {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.},
doi = {10.1103/PhysRevC.93.014616},
journal = {Physical Review C},
number = 1,
volume = 93,
place = {United States},
year = {Mon Jan 25 00:00:00 EST 2016},
month = {Mon Jan 25 00:00:00 EST 2016}
}
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