Interplay of LFV and slepton mass splittings at the LHC as a probe of the SUSY seesaw

被引：26

作者：

Abada, A. ^{[1
]}

Figueiredo, A. J. R. ^{[2
]}

Romao, J. C. ^{[2
]}

Teixeira, A. M. ^{[3
]}

机构：

[1] Univ Paris 11, CNRS, Phys Theor Lab, UMR 8627, F-91405 Orsay, France

[2] Inst Super Tecn, Ctr Fis Teor Particulas, P-1049001 Lisbon, Portugal

[3] CNRS, Phys Corpusculaire Lab, IN2P3, UMR 6533, F-63177 Aubiere, France

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2010年 / 10期

关键词：

Supersymmetry Phenomenology; LEPTON-FLAVOR VIOLATION; NEUTRINO YUKAWA COUPLINGS; ELECTRIC-DIPOLE MOMENTS; DARK-MATTER; DECAYS; PHYSICS; SEARCH; NUMBER; MODEL; TAU;

D O I：

10.1007/JHEP10(2010)104

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We study the impact of a type-I SUSY seesaw concerning lepton flavour violation (LFV) both at low-energies and at the LHC. The study of the di-lepton invariant mass distribution at the LHC allows to reconstruct some of the masses of the different sparticles involved in a decay chain. In particular, the combination with other observables renders feasible the reconstruction of the masses of the intermediate sleptons involved in chi(0)(2) -> (l) over tildel -> ll chi(0)(1) decays. Slepton mass splittings can be either interpreted as a signal of non-universality in the SUSY soft breaking-terms (signalling a deviation from constrained scenarios as the cMSSM) or as being due to the violation of lepton flavour. In the latter case, in addition to these high-energy processes, one expects further low-energy manifestations of LFV such as radiative and three-body lepton decays. Under the assumption of a type-I seesaw as the source of neutrino masses and mixings, all these LFV observables are related. Working in the framework of the cMSSM extended by three right-handed neutrino superfields, we conduct a systematic analysis addressing the simultaneous implications of the SUSY seesaw for both high- and low-energy lepton flavour violation. We discuss how the confrontation of slepton mass splittings as observed at the LHC and low-energy LFV observables may provide important information about the underlying mechanism of LFV.

引用

页数：57

共 120 条

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