Open AccessStudying the possibility of FSR suppression in DM decay in dependence of the mass of intermediate particle and vertex
Author(s) -
M. L. Solovyov,
K. M. Belotsky,
Airat Kamaletdinov,
E. A. Esipova
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1390/1/012096
Subject(s) - physics , annihilation , vertex (graph theory) , cascade , parameterized complexity , nuclear physics , particle physics , intermediate state , atomic physics , mathematics , chemistry , combinatorics , graph , chromatography
In this proceedings we study possibility of final state radiation (FSR) in the process of dark matter (DM) decay/annihilation. Two possibilities are considered independently: one-cascade annihilation through intermediate particle (a), and parameterized interaction vertex. The mass of a and vertex parameters are used to try to suppression FSR. Suppression is necessary to avoid limit from cosmic gamma-radiation preventing DM explanation of positron anomaly in CR. Finally, it may seem that a little suppression can be reached by fine-tuning the mass of a, and vertex parameters do not help to do it in the considered cases.