TY - JOUR
T1 - High-energy cosmic-ray positrons from hidden-gauge-boson dark matter
AU - Chen, Chuan Ren
AU - Takahashi, Fuminobu
AU - Yanagida, T. T.
N1 - Funding Information:
This work was supported by World Premier International Research Center Initiative (WPI Initiative), MEXT, Japan.
PY - 2009/3/30
Y1 - 2009/3/30
N2 - We provide a scenario in which a hidden U (1) gauge boson constitutes dark matter of the Universe and decays into the standard-model particles through a kinetic mixing with an U (1)B - L gauge boson. Interestingly, our model can naturally account for the steep rise in the positron fraction recently reported by PAMELA. Moreover, we find that due to the charge assignment of U (1)B - L, only a small amount of antiprotons are produced in the decay, which is also consistent with the PAMELA and other observational data.
AB - We provide a scenario in which a hidden U (1) gauge boson constitutes dark matter of the Universe and decays into the standard-model particles through a kinetic mixing with an U (1)B - L gauge boson. Interestingly, our model can naturally account for the steep rise in the positron fraction recently reported by PAMELA. Moreover, we find that due to the charge assignment of U (1)B - L, only a small amount of antiprotons are produced in the decay, which is also consistent with the PAMELA and other observational data.
UR - https://www.scopus.com/pages/publications/61849115756
UR - https://www.scopus.com/pages/publications/61849115756#tab=citedBy
U2 - 10.1016/j.physletb.2009.02.046
DO - 10.1016/j.physletb.2009.02.046
M3 - Article
AN - SCOPUS:61849115756
SN - 0370-2693
VL - 673
SP - 255
EP - 259
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 4-5
ER -