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Author  |
Helo, J.C.; Ota, T.; Hirsch, M. |
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Title |
Invisible neutron decay and light BSM particles |
Type |
Journal Article |
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Year |
2026 |
Publication |
Physical Review D |
Abbreviated Journal |
Phys. Rev. D |
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Volume |
113 |
Issue |
3 |
Pages |
035002 - 17pp |
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Abstract |
In Standard Model (SM) effective field theory, invisible neutron decay arises from d = 12 operators. Adding new, light particles to the field content of the SM, such as right-handed neutrinos, allows to construct operators for invisible neutron decay at much lower dimensions. Observing invisible neutron decay, if nucleon decays with charged leptons remain absent, would therefore point towards the existence of new neutral degrees of freedom. Here, we discuss four cases: (i) Adding right-handed neutrinos to the SM; (ii) a right-handed neutrino and an axionlike particle; (iii) a right-handed neutrino and a (nearly) massless singlet scalar; and (iv) a right-handed neutrino and a light Z'. We give the general tree-level decomposition for the resulting d = (7-9) operators for invisible neutron decay. We also briefly discuss LHC searches related to the exotic states found in these UV completions. |
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Address |
[Helo, J. C.; Ota, T.] Univ La Serena, Fac Ciencias, Dept Fis, Ave Cisternas 1200, La Serena, Chile, Email: jchelo@userena.cl; |
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Publisher |
Amer Physical Soc |
Place of Publication |
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Language |
English |
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Original Title |
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Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
2470-0010 |
ISBN |
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Notes |
WOS:001686375800002 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
7053 |
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