https://doi.org/10.1140/epjc/s10052-009-1077-0
Regular Article - Theoretical Physics
Effects of the anomalous Higgs couplings on the Higgs boson production at the Large Hadron Collider
1
Department of Physics, University of Toyama, 3190 Gofuku, Toyama, 930-8555, Japan
2
The Abdus Salam ICTP of UNESCO and IAEA, Strada Costiera 11, 34151, Trieste, Italy
* e-mail: ktsumura@ictp.it
Received:
2
October
2008
Revised:
19
April
2009
Published online:
16
June
2009
We study the impact of dimension-six operators on single- and double-Higgs production rates via gluon fusion at the Large Hadron Collider (LHC). If the top-Yukawa coupling is modified by some new physics whose scale is of the TeV scale, its effect changes the cross sections of single-Higgs production gg→H and double-Higgs production gg→HH through the top-loop diagram. In particular, double-Higgs production can receive significant enhancement from the effective top-Yukawa coupling and the new dimension-five coupling
which are induced by the dimension-six operator. Comparing these results to the forthcoming data at the LHC, one can extract information of the dimension-six operators relevant to the top quark and the Higgs boson.
PACS: 14.65.Ha – / 12.60.Fr –
© Springer-Verlag , 2009
