in the lepton plus missing transverse momentum final. The data set corresponds to an integrated luminosity of. The first search for a heavy charged vector boson in the final state with a tau lepton and a neutrino is reported, using 19. A search for a new high-mass resonance decaying to a lepton and a neutrino is reported. A bstract A search is presented for a heavy W boson resonance decaying to a B or T vector-like quark and a t or a b quark, respectively. W boson is heavy enough to decay to top and bottom quarks, the SSM branching fraction for the decay W is 8.5 1. In studying the gamma decay we calculated the density of states, as required by the Fermi’s Golden Rule. A search is performed for heavy neutrinos in the decay of a W boson into two muons and a jet. Consequently, searches for Majorana neutrinos are of fundamental interest. Owing to the new heavy neutrino’s Majo-rana nature, it is its own antiparticle, which allows pro-cesses that violate lepton-number conservation by two units. The story of neutrino physics has been an amazing one, starting in 1930 with the hypothesis of Pauli. from heavy neutrinos via the so-called ‘see-saw’ mecha-nism 511. The seesaw extension of the SM is probably the simplest idea for explaining the very small neutrino masses naturally, where the SM-singlet heavy right-handed Majorana neutrinos induce the dimension five operators leading to very small Majorana neutrino masses (the seesaw mechanism ).\right)\) accounts for the Coulomb interaction between the nucleus and the electron that we had neglected in the previous expression (where we only considered the weak interaction). We present a short overview of the importance of the study of neutrino interactions in the intermediate- and high-energy region, with an introduction to the neutrinos and a very brief description of the collection of invited articles. The current experimental results on the neutrino oscillation phenomena, including the recent measurements of the so-called reactor angle, have established the existence of neutrino masses and flavor mixings, which require us to extend the Standard Model (SM).
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