3,364 research outputs found
The Diphoton Excess, Low Energy Theorem and the 331 Model
We interpret the diphoton anomaly as a heavy scalar in the so-called
331 model. The scalar is responsible for breaking the gauge symmetry down to the standard model electroweak
gauge group. It mainly couples to the standard model gluons and photons through
quantum loops involving heavy quarks and leptons. Those quarks and leptons, in
together with the SM quarks and leptons, form the fundamental representation of
the 331 model. We use low energy theorem to calculate effective coupling of
, , , and . The analytical
results can be applied to new physics models satisfying the low energy theorem.
We show that the heavy quark and lepton contribution cannot produce enough
diphoton pairs. It is crucial to include the contribution of charged scalars to
explain the diphoton excess. The extra neutral boson could also
explain the 2 TeV diboson excess observed at the LHC Run-I.Comment: To appear in PR
Possible Way to Synthesize Superheavy Element Z=117
Within the framework of the dinuclear system model, the production of
superheavy element Z=117 in possible projectile-target combinations is analyzed
systematically. The calculated results show that the production cross sections
are strongly dependent on the reaction systems. Optimal combinations,
corresponding excitation energies and evaporation channels are proposed in this
letter, such as the isotopes ^{248,249}Bk in ^{48}Ca induced reactions in 3n
evaporation channels and the reactions ^{45}Sc+^{246,248}Cm in 3n and 4n
channels, and the system ^{51}V+^{244}Pu in 3n channel.Comment: 10 pages, 4 figures, 1 tabl
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