arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 0707.3152hep-ph
收藏

Higgs衰变为Tau轻子过程中的新物理效应

New Physics Effects in Higgs Decay to Tau Leptons

Sonny Mantry, Michael J. Ramsey-Musolf, Michael Trott

摘要:

我们研究了TeV尺度的新物理(NP)对希格斯玻色子玻色子衰变为带电轻子的速率的可能影响,重点研究了在大型强子对撞机上容易研究的τ-τ通道.利用在NP标度λ以下有效的SU(3)_C X SU(2)_L X U(1)_Y不变有效理论,我们确定了所有能对衰变率产生明显贡献的直到6维的有效算符,并计算了衰变率对相应算符系数的依赖性。我们绑定的规模的基础上的tau质量,自然的考虑,和实验的限制,tau异常磁矩这些运营商系数的大小。这些考虑意味着,从NP标度的Lambda ~ TeV的衰变率的贡献可以与SM汤川相互作用的基础上的预测。只有在理解了这种NP效应并将其置于理论控制之下之后,才有可能对希格斯机制通过h-> tau-tau通道产生费米子质量进行可靠的测试。

英文摘要:

We study the possible effects of TeV scale new physics (NP) on the rate for Higgs boson decays to charged leptons, focusing on the tau tau channel which can be readily studied at the Large Hadron collider. Using an SU(3)_C X SU(2)_L X U(1)_Y invariant effective theory valid below a NP scale Lambda, we determine all effective operators up to dimension six that could generate appreciable contributions to the decay rate and compute the dependence of the rate on the corresponding operator coefficients. We bound the size of these operator coefficients based on the scale of the tau mass, naturalness considerations, and experimental constraints on the tau anomalous magnetic moment. These considerations imply that contributions to the decay rate from a NP scale Lambda ~ TeV could be comparable to the prediction based on the SM Yukawa interaction. A reliable test of the Higgs mechanism for fermion mass generation via the h-> tau tau channel is possible only after such NP effects are understood and brought under theoretical control.

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。

↑