TY - JOUR
T1 - Leptophilic dark matter confronts AMS-02 cosmic-ray positron flux
AU - Cao, Qing Hong
AU - Chen, Chuan Ren
AU - Gong, Ti
N1 - Publisher Copyright:
© 2016 The Physical Society of the Republic of China (Taiwan)
PY - 2017/2/1
Y1 - 2017/2/1
N2 - With the measurement of positron flux published recently by AMS-02 collaboration, we show how the leptophilic dark matter fits the observation. We obtain the percentages of different products of dark matter annihilation that can best describe the flux of high energy positrons observed by AMS. We show that dark matter annihilates predominantly into ττ pair, while both ee and μμ final states should be less than 20%. When gauge boson final states are included, the best branching ratio of needed ττ mode reduces.
AB - With the measurement of positron flux published recently by AMS-02 collaboration, we show how the leptophilic dark matter fits the observation. We obtain the percentages of different products of dark matter annihilation that can best describe the flux of high energy positrons observed by AMS. We show that dark matter annihilates predominantly into ττ pair, while both ee and μμ final states should be less than 20%. When gauge boson final states are included, the best branching ratio of needed ττ mode reduces.
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U2 - 10.1016/j.cjph.2016.11.006
DO - 10.1016/j.cjph.2016.11.006
M3 - Article
AN - SCOPUS:85010676711
SN - 0577-9073
VL - 55
SP - 10
EP - 15
JO - Chinese Journal of Physics
JF - Chinese Journal of Physics
IS - 1
ER -