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Masses of dark matter and neutrino from TeV-scale spontaneous<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>U</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn>1</mml:mn><mml:msub><mml:mo stretchy="false">)</mml:mo><mml:mrow><mml:mi>B</mml:mi><mml:mtext mathvariant="normal">โˆ’</mml:mtext><mml:mi>L</mml:mi></mml:mrow></mml:msub></mml:math>breaking

Masses of dark matter and neutrino from TeV-scale spontaneous<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>U</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn>1</mml:mn><mml:msub><mml:mo stretchy="false">)</mml:mo><mml:mrow><mml:mi>B</mml:mi><mml:mtext mathvariant="normal">โˆ’</mml:mtext><mml:mi>L</mml:mi></mml:mrow></mml:msub></mml:math>breaking

We propose a simple testable model with mass generation mechanisms for dark matter and neutrino based on the gauged $U(1)_{B-L}$ symmetry and an exact $Z_2$ parity. The $U(1)_{B-L}$ symmetry is spontaneously broken at the TeV scale, by which $Z_2$-odd right-handed neutrinos receive Majorana masses of the electroweak scale. The lightest โ€ฆ