Recent result from E821 experiment on muon g - 2 and unconstrained minimal supersymmetric standard model

Shinji Komine, Takeo Moroi, Masahiro Yamaguchi

Research output: Contribution to journalArticlepeer-review

96 Citations (Scopus)

Abstract

Recently, the E821 experiment at the Brookhaven National Laboratory announced their latest result of their muon g - 2 measurement which is about 2.6-σ away from the standard model prediction. Taking this result seriously, we examine the possibility to explain this discrepancy by the supersymmetric contribution. Our analysis is performed in the framework of the unconstrained supersymmetric standard model which has free seven parameters relevant to muon g-2. We found that, in the case of large tan β, sparticle masses are allowed to be large in the region where the SUSY contribution to the muon g-2 is large enough, and hence the conventional SUSY search may fail even at the LHC. On the contrary, to explain the discrepancy in the case of small tan β, we found that (i) sleptons and SU(2)L gauginos should be light, and (ii) negative search for the Higgs boson severely constrains the model in the framework of the mSUGRA and gauge-mediated model.

Original languageEnglish
Pages (from-to)93-98
Number of pages6
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume506
Issue number1-2
DOIs
Publication statusPublished - 2001 May 3

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Fingerprint

Dive into the research topics of 'Recent result from E821 experiment on muon g - 2 and unconstrained minimal supersymmetric standard model'. Together they form a unique fingerprint.

Cite this