Upper bound on tensor interaction in the decay pi- ---> e- anti-neutrino gamma
Mar, 19923 pages
Published in:
- Phys.Lett.B 283 (1992) 120-122
- Published: 1992
Report number:
- TPI-MINN-92-5-T
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Abstract: (Elsevier)
It is pointed out that a tensor four fermion interaction ( u R σ μν d L ) ( e rmR σ μν ν L ) produces through radiative corrections an interaction of the structure ( u R d L ) ( e R ν L , which is stronly limited by the decay π − →e − ν . The latter limit translates then into an upper bound of the strength of the tensor interaction which is at least two orders of magnitude lower than the value claimed by a recent measurement of the decay π − →e ν γ . Some aspects of a possible tensor interaction related to this bound are also discussed.- pi-: radiative decay
- radiative decay: pi-
- pi-: decay constant
- decay constant: pi-
- four-fermion interaction: tensor
- tensor: four-fermion interaction
- upper limit
- radiative correction
- quantum chromodynamics
- quark: condensation
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