Virtual top effects on low mass Higgs interactions at next-to-leading order in QCD

Kniehl, Bernd A.; Steinhauser, Matthias

doi:10.1016/0370-2693(95)01251-6

Virtual top effects on low mass Higgs interactions at next-to-leading order in QCD

Journal Article · Sat Jul 01 04:00:00 EDT 1995 · Phys.Lett.B

DOI:https://doi.org/10.1016/0370-2693(95)01251-6· OSTI ID:1847344

^[1]; Steinhauser, Matthias ^[2]

Fermilab; Wisconsin U., Madison
Karlsruhe U., TTP

We present the next-to-leading-order QCD corrections of O(alpha_s~2 G_F M_t~2) to the low-M_H effective l~+l~-H, ZZH, and W~+W~-H interaction Lagrangians in the high-M_t limit. In the on-shell scheme formulated with G_F, the O(alpha_s~2 G_F M_t~2) corrections support the O(alpha_s G_F M_t~2) ones and further increase the screening of the O(G_F M_t~2) terms. The coefficients of (alpha_s/pi)~2 range from -6.847 to -16.201, being in line with the value -14.594 recently found for Delta rho. All four QCD expansions converge considerably more rapidly, if they are written with mu_t=m_t(mu_t), where m_t(mu) is the MS-bar mass, rather than the pole mass, M_t.

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Research Organization:: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)

DOE Contract Number:: AC02-07CH11359

OSTI ID:: 1847344

Report Number(s):: FERMILAB-PUB-95-197-T; MAD-PH-896; MPI-PHT-95-65; TTP-95-28; arXiv:hep-ph/9507382; oai:inspirehep.net:396963

Journal Information:: Phys.Lett.B, Journal Name: Phys.Lett.B Vol. 365

Country of Publication:: United States

Language:: English

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