Next-to-leading order QCD corrections for the B0 anti-B0 mixing with an extended Higgs sector.

Urban, J.; Krauss, F.; Jentschura, U.; Soff, G.

Abstract

We present a calculation of the mixing including next-to-leading order (NLO) QCD corrections within the Two-Higgs Doublet Model (2HDM). The QCD corrections at NLO are contained in the factor denoted by η2 which modifies the result obtained at the lowest order of perturbation theory. In the Standard Model case, we confirm the results for η2 obtained by Buras, Jamin and Weisz [Nucl. Phys. B 347 (]990) 49]1. The factor η2 is gauge and renormalization prescription invariant and it does not depend on the infrared behaviour of the theory, which constitutes an important test of the calculations. The NLO calculations within the 2HDM enhance the LO result up to 18%, which affects the correlation between My and Vtd.

Citation

Urban, J., Krauss, F., Jentschura, U., & Soff, G. (1998). Next-to-leading order QCD corrections for the B0 anti-B0 mixing with an extended Higgs sector. Nuclear Physics B, 523(1-2), 40-58. https://doi.org/10.1016/s0550-3213%2898%2900043-1

• Journal Article Type: Article
• Publication Date: 1998
• Journal: Nuclear Physics B
• Print ISSN: 0550-3213
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 523
• Issue: 1-2
• Pages: 40-58
• DOI: https://doi.org/10.1016/s0550-3213%2898%2900043-1
• Keywords: Mixing, Oscillations, 2HDM, CP violation, CKM matrix.