Decoupling behaviour of O(mt4) corrections to the h0 self-couplings

✍ Scribed by Wolfgang Hollik; Siannah Peñaranda

• Publisher: Elsevier Science
• Year: 2003
• Tongue: English
• Weight: 376 KB
• Volume: 116
• Category: Article
• ISSN: 0920-5632
• DOI: 10.1016/s0920-5632(03)80190-1

✦ Synopsis

The decoupling behaviour of the leading one-loop Yukawa-coupling contributions of O(mat) to the lightest MSSM Higgs boson self-couplings, when the top-squarks are heavy as compared to the electroweak scale, is discussed. As shown analytically and numerically, the large corrections can almost completely be absorbed into the h°-boson mass and therefore, the h ° self-couplings remain similar to the coupling of the SM Higgs boson for a heavy top-squark sector.