Parameterization of Gamma, e^+/- and Neutrino Spectra Produced by p-p Interaction in Astronomical Environment

Details Parameterization of Gamma, e^+/- and Neutrino Spectra Produced by p-p Interaction in Astronomical Environment Parameterization of Gamma, e^+/- and Neutrino Spectra Produced by p-p Interaction in Astronomical Environment

2006-05-23

arxiv.org/abs/astro-ph/0605581v3

Astrophys.J. 647 (2006) 692-708

Astronomy and Astrophysics

Astrophysics

Errors and typos in Eqns 1-4 and Table 1 corrected and editorial changes incorporated

Scientific paper

10.1086/505189

We present the yield and spectra of stable secondary particles (gamma, e^+/-, nu_e, nubar_e, nu_mu, and nubar_mu) of p-p interaction in parameterized formulae to facilitate calculations involving them in astronomical environments. The formulae are derived on the up-to-date p-p interaction model by [Kamae05] which incorporates the logarithmically rising inelastic cross-section, the diffraction dissociation process, and the Feynman scaling violation. To improve fidelity to experimental data in lower energies, two baryon resonance contributions have been added: one representing Delta(1232) and the other multiple resonances around 1600MeV/c^2. The parametrized formulae predict that all secondary particle spectra be harder by about 0.05 in power-law indices than that of the incident proton and their inclusive cross-sections be larger than those predicted by p-p interaction models based on the Feynman scaling.

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