科研之友
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摘要
In the standard model, the Higgs boson h couples to the quarks and charged leptons according to the well-known formula (m(psi)/v) h (psi) over bar psi, where psi = quark (q) or lepton (l) and v = 246GeV is its vacuum expectation value. Suppose m(psi) is of radiative origin instead, then the effective h (psi) over bar psi Yukawa coupling will not be exactly m(psi)/v. We show for the first time quantitatively how this may shift the observed branching fractions of h --%26gt; (b) over barb and h --%26gt; tau(+)tau(-) upward or downward. Thus, the precision measurements of the Higgs decay to fermions at the Large Hadron Collider, due to the resume operation in 2015, could be the key to possible new physics.
- 出版日期2014-10
