HEFT approach to investigate the muon g-2 anomaly at a muon collider

被引：0

作者：

Fortuna, Fabiola ^{[1
]}

Marquez, Juan Manuel ^{[2
]}

Roig, Pablo ^{[2
,3
]}

机构：

[1] Univ Nacl Autonoma Mexico, Inst Fis, AP 20-364, Ciudad De Mexico 01000, Mexico

[2] Inst Politecn Nacl, Ctr Invest & Estudios Avanzados, Dept Fis, Apartado Postal 14-740, Ciudad De Mexico 07000, Mexico

[3] Univ Valencia, CSIC, IFIC, Catedratico Jose Beltran 2, E-46980 Paterna, Spain

来源：

PHYSICAL REVIEW D | 2025年 / 111卷 / 07期

关键词：

MAGNETIC-MOMENT; HIGGS; BREAKING;

D O I：

10.1103/PhysRevD.111.075012

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In a previous work, Buttazzo and Paradisi [Phys. Rev. D 104, 075021 (2021)], pointed out that heavy new physics (NP) contributions to lepton dipole moments and high-energy cross sections of lepton pairs into Higgs and gamma/Z bosons are connected, if the electroweak symmetry breaking is realized linearly. As a consequence, a multi-TeV muon collider would provide a unique test of NP in the muon g-2 through the study of high-energy processes such as mu+mu- -* h + gamma/Z. Since the analysis involved a Standard Model effective field theory (SMEFT) approach to Higgs processes, it could also be studied by the more general Higgs EFT (HEFT) formulation. We compute the modification of the high-energy cross section mu+mu- -* h + gamma/Z and h -* mu+mu- + gamma/Z decay using the dimension-6 HEFT Lagrangian and compare them with the SMEFT analysis. We find that, within the current HEFT analysis, there are plausible scenarios where the HEFT approach could lead to a higher sensitivity to test the NP contributions in the muon g-2. However, a more precise knowledge of the new HEFT parameters is needed for a definite conclusion, which motivates the search for complementary measurements.

引用

页数：14

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