arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1007.5439hep-ph
收藏

对MSSM中轻希格斯玻色子质量的三圈修正

Three-loop corrections to the mass of the light Higgs boson in the MSSM

Philipp Kant

摘要:

标准模型的最小超对称扩展(MSSM)预言了轻中性希格斯玻色子的存在。一旦在大型强子对撞机上被发现,它的质量将立即成为一个精确的可观测值。希格斯粒子质量的理论值Mh受到大的辐射修正。由于大的顶汤川耦合,顶夸克及其超伴子的环对辐射修正提供了主要贡献。我们提出了一个计算的超对称量子色动力学修正这些图,三圈的顺序。我们发现,我们的三个循环的结果可以在一个GeV的范围内,因此与预期的实验精度在大型强子对撞机相比,是相关的。我们还发现一个显着减少的依赖性的重正化处方,从而降低了理论的不确定性的预测Mh。

英文摘要:

The Minimal Supersymmetric extension of the Standard Model (MSSM) predicts the existence of a light neutral Higgs boson. Once found at the LHC, its mass will immediately become a precision observable. The theoretical value of the Higgs mass Mh is subject to large radiative corrections. Due to the large top Yukawa coupling, loops of top quarks and their superpartners provide the dominant contribution to the radiative corrections. We present a calculation of the SUSY-QCD corrections to these diagrams, up to the three-loop order. We find that our three-loop results can be in the range of one GeV, and are thus relevant when compared with the expected experimental accuracy at the LHC. We also find a significantly reduced dependency on the renormalisation prescription, thus decreasing the theoretical uncertainty of the prediction of Mh.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑