SU(5) - Institute of Particle and Nuclear Physics
SU(5) - Institute of Particle and Nuclear Physics
SU(5) - Institute of Particle and Nuclear Physics
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Choosing the Vacuum Expectation Values<strong>SU</strong>(5) Φ −→ <strong>SU</strong>(3) C× <strong>SU</strong>(2) L× U(1) YH−→ <strong>SU</strong>(3)C × U(1) em.〈◮ Φ 〉 invariant under <strong>SU</strong>(3) C× <strong>SU</strong>(2) L× U(1) Ymeans⎛⎞−2v〈 〉 −2vΦ ∼ ⎜−2v⎟⎝3v ⎠ ∼ vT U(1) Y3v◮ similar to SM choose 〈 H 〉 ( 00001)∼ ɛv with scale parameterɛ ∼ 10 −12 − 10 −14