g-2 From Noncommutative Geometry

Details g-2 From Noncommutative Geometry g-2 From Noncommutative Geometry

2001-09-24

arxiv.org/abs/hep-ph/0109224v1

Phys.Lett. B527 (2002) 115-118

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 2 figures

Scientific paper

This brief Letter demonstrates that effects from a $\nc$ space-time geometry will measurably affect the value of $(g-2)_\mu$ inferred from the decay of the muon to an electron plus two neutrinos. If the scale of noncommutivity is ${\cal O}(TeV)$, the alteration of the $V-A$ structure of the lepton-lepton-W vertex is sufficient to shift the inferred value of $(g-2)_\mu$ to one part in $10^8$. This may account for the recently reported $2.6 \sigma$ discrepancy between the BNL measurement $a_{expt} = 11659202(14)(6) \times 10^{-10}$ and the Standard Model prediction $a_{SM} = 11659159.6(6.7) \times 10^{-10}$.

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