baboons
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baboons [2014/06/10 18:49] brown Added help for humans take two |
baboons [2014/06/13 10:24] (current) cook |
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| - Do likewise for the reverse reaction rate, making sure not to repeat any of the above lines that shouldn't be done if the element already exists | - Do likewise for the reverse reaction rate, making sure not to repeat any of the above lines that shouldn't be done if the element already exists | ||
| + | ====== Cross Sections====== | ||
| + | To add in reaction rates, as above, obviously one needs to find some reaction rates. Unfortunately, these don't exist at the temperatures and energy distributions of interest, as far as the authors are aware. Instead, we used the Ramsauer model, with parameters from Gowder et. al. 2005 to find total scattering cross sections. We then took a nominal value of 10% for the destruction cross sections. See the presentation for details. The cross sections were then put into a reaction rate, using a dirac function distribution of neutron energies. | ||
| + | |||
| + | ====== Presentation ====== | ||
| + | |||
| + | May be found here. {{::presentation_bbn.pdf|}} | ||
| Reference Papers: | Reference Papers: | ||
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| Pierre Salati, 2014. Dark Matter Annihilation in the Universe [[http://arxiv.org/pdf/1403.4495.pdf]] | Pierre Salati, 2014. Dark Matter Annihilation in the Universe [[http://arxiv.org/pdf/1403.4495.pdf]] | ||
| - | **Logbook** | ||
baboons.txt ยท Last modified: 2014/06/13 10:24 by cook
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