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T: Fachverband Teilchenphysik

T 80: Cosmic Rays IV

T 80.4: Vortrag

Donnerstag, 3. April 2025, 17:00–17:15, VG 3.102

Stochastic analytic expressions for efficient modeling of hadronic interactions — •Leonel Morejon — Bergische Universit\"{a}t Wuppertal, Gau{\ss}str. 20, 42119 Wuppertal

While sources of Ultra-High-Energy Cosmic Rays (UHECRs) are expected to be radiation dominated, subdominant hadronic interactions might, nevertheless, yield observable effects in the spectra of messengers like photons and neutrinos.

Hadronic interactions are usually modeled with suitable generators to create production tables that are convolved with the spectra of primary UHECRs to predict the spectra of secondary particles. This method works reasonably well when the number of interactions is sufficiently large, but does not apply when fluctuations are important, as is the case for UHECR sources.

This work shows that the stochastic behavior in optically thin scenarios can be described with analytic expressions. Such expressions are used to compute the spectra of secondaries like photons and neutrinos produced in the sources, for suitable examples.

Keywords: stochastic; UHECR sources; multi-messengers; analytical