Probing New Physics through mu-e Universality in K->lnu
| dc.creator | Masiero, A. | |
| dc.creator | Paradisi, P. | |
| dc.creator | Petronzio, R. | |
| dc.date | 2005-11-24 | |
| dc.date | 2006-07-31 | |
| dc.date.accessioned | 2026-07-07T10:44:25Z | |
| dc.date.available | 2026-07-07T10:44:25Z | |
| dc.description | The recent NA48/2 improvement on R_K=Gamma(K->e nu_e)/Gamma(K->mu nu_mu) emphasizes the role of K_l2 decays in probing the mu-e universality. Supersymmetric (SUSY) extensions of the Standard Model can exhibit mu-e non-universal contributions. Their origin is twofold: those deriving from lepton flavor conserving couplings are subdominant with respect to those arising from lepton flavor violating (LFV) sources. We show that mu-e non-universality in K_l2 is quite effective in constraining relevant regions of SUSY models with LFV (for instance, supergravities with a see-saw mechanism for neutrino masses). A comparison with analogous bounds coming from tau LFV decays proves the relevance of the measurement of R_K to probe LFV in SUSY. | |
| dc.description | v2: 5 pages, 1 figure. Comments and 2 references added | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0511289 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0511289 | |
| dc.identifier | Phys.Rev.D74:011701,2006 | |
| dc.identifier | doi:10.1103/PhysRevD.74.011701 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/182588 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Probing New Physics through mu-e Universality in K->lnu | |
| dc.type | text |