Single-photon Z decays and small neutrino masses

Romão, J. C. ; Rindani, S. D. ; Valle, J. W. F. (1997) Single-photon Z decays and small neutrino masses Nuclear Physics B, 493 (1-2). pp. 56-72. ISSN 0550-3213

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We discuss some rare Z decay signatures associated with extensions of the Standard Model with spontaneous lepton number violation close to the weak scale. We show that single-photon Z decays such as Z → γH and Z → γJJ where H is a CP-even Higgs boson and J denotes the associated CP-odd majoron may occur with branching ratios accessible to LEP sensitivities, even though the corresponding neutrino masses can be very small, as required in order to explain the deficit of solar neutrinos.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:94690
Deposited On:18 Oct 2012 12:08
Last Modified:18 Oct 2012 12:08

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