Limiting majoron self-interactions from gravitational wave experiments

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Andrea Addazi and Antonino Marcianò. Limiting majoron self-interactions from gravitational wave experiments[J]. Chinese Physics C, 2018, 42(2): 023105. doi: 10.1088/1674-1137/42/2/023105
Andrea Addazi and Antonino Marcianò. Limiting majoron self-interactions from gravitational wave experiments[J]. Chinese Physics C, 2018, 42(2): 023105.  doi: 10.1088/1674-1137/42/2/023105 shu
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Received: 2017-10-09
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    Supported by the Shanghai Municipality, through the grant No. KBH1512299, and by Fudan University, through the grant No. JJH1512105

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Limiting majoron self-interactions from gravitational wave experiments

    Corresponding author: Andrea Addazi,
Fund Project:  Supported by the Shanghai Municipality, through the grant No. KBH1512299, and by Fudan University, through the grant No. JJH1512105

Abstract: We show how majoron models may be tested/limited in gravitational wave experiments. In particular, the majoron self-interaction potential may induce a first order phase transition, producing gravitational waves from bubble collisions. We dub such a new scenario the violent majoron model, because it would be associated with a violent phase transition in the early Universe. Sphaleron constraints can be avoided if the global U(1)B-L is broken at scales lower than the electroweak scale, provided that the B-L spontaneously breaking scale is lower than 10 {TeV} in order to satisfy the cosmological mass density bound. The possibility of a sub-electroweak phase transition is practically unconstrained by cosmological bounds and it may be detected within the sensitivity of the next generation of gravitational wave experiments:eLISA, DECIGO and BBO. We also comment on its possible detection in the next generation of electron-positron colliders, where majoron production can be observed from the Higgs portals in missing transverse energy channels.

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