Rare Decays as Window to New Physics
| dc.creator | Sehgal, L. M. | |
| dc.date | 2004-08-16 | |
| dc.date.accessioned | 2026-07-07T03:53:09Z | |
| dc.date.available | 2026-07-07T03:53:09Z | |
| dc.description | Rare decays of K mesons are reviewed from the perspective of testing the ``ones'' and ``zeros'' of the standard model. Decays K^+ -> pi^+ nu anti-nu and K_L -> pi^0 nu anti-nu probe the one-loop effective Hamiltonian for s -> d nu anti-nu, and can constrain the rho, eta coordinates of the unitarity triangle. Decays such as K_L -> pi^0 l^+ l^-, K_L -> mu^+ mu^-, K^+ -> pi^+ l^+ l^- and K_L -> pi^+ pi^- e^+ e^- involve short-distance effects, as well as long-distance photon-induced contributions. Some comments are added on curious features of electroweak amplitudes in the ``gaugeless'' limit, and in the chiral electron limit m_e -> 0. | |
| dc.description | 8 pages, Invited talk on DAFNE04 conference | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0408175 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0408175 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/43726 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Rare Decays as Window to New Physics | |
| dc.type | text |