Long Distance Contributions to the Decay K+ ---> pi+ Neutrino anti-neutrino
Jan, 198919 pages
Published in:
- Phys.Rev.D 39 (1989) 3325
Report number:
- PITHA-89/03
Citations per year
Abstract: (APS)
We calculate two distinct long-distance contributions to the decay K+→π+νν¯: (i) that arising from the intermediate states πl and Dl and (ii) that associated with hadronic contributions to the KπZ vertex. A combined branching ratio of 0.7×10−13 is obtained (for three neutrino species), to be compared with the short-distance estimate (1–8)×10−10. A remark is made on the energy spectrum of the pion.- K+: SEMILEPTONIC DECAY
- SEMILEPTONIC DECAY: K+
- K+: BRANCHING RATIO
- K+: WIDTH
- FINAL STATE: (PI LEPTON)
- (PI LEPTON): FINAL STATE
- FINAL STATE: (D LEPTON)
- (D LEPTON): FINAL STATE
- ENERGY SPECTRUM: (PI)
- (PI): ENERGY SPECTRUM
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