Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-07-23
Phys.Rev.D80:073015,2009
Physics
High Energy Physics
High Energy Physics - Phenomenology
40 pages, 27 figures, several modifications made and accepted for publication in Phys. Rev. D
Scientific paper
10.1103/PhysRevD.80.073015
We study the possibility to test the Type I seesaw mechanism for neutrino masses at the CERN Large Hadron Collider. The inclusion of three generations of right-handed neutrinos (N_i) provides an attractive option of gauging the B-L accidental symmetry in the Standard Model (as well as an extended symmetry X=Y-5(B-L)/4). The production mechanisms for the right-handed neutrinos through the Z' gauge boson in the U(1)_{B-L} and U(1)_X extensions of the Standard Model are studied. We discuss the flavor combinations of the charged leptons from the decays of N_i in the Delta L=2 channels. We find that the clean channels with dilepton plus jets and possible secondary vertices of the N decay could provide conclusive signals at the LHC in connection with the hierarchical pattern of the light neutrino masses and mixing properties within the Type I seesaw mechanism.
Han Tao
Li Tong
Perez Pavel Fileviez
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