Single-Photon Z Decays and Small Neutrino Masses
نویسندگان
چکیده
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. E-mail [email protected] Permanent Address: Theory Group, Physical Research Laboratory, Navarangpura, Ahmedabad, 380 009, India
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