Higgs-mediated K{yields}{pi}{nu}{nu} in the MSSM at large tan{beta}

Journal Article · Wed Mar 01 00:00:00 EST 2006 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.73.055017· OSTI ID:20776904

Isidori, Gino ^[1]; Paradisi, Paride ^[2]

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1. INFN, Laboratori Nazionali di Frascati, I-00044 Frascati (Italy)
2. INFN, Sezione di Roma II and Dipartimento di Fisica, Universita di Roma 'Tor Vergata', I-00133 Rome (Italy)

We analyze the impact of Higgs-mediated amplitudes on the rare decays K{sub L}{yields}{pi}{sup 0}{nu}{nu} and K{sup +}{yields}{pi}{sup +}{nu}{nu} in the MSSM with large tan{beta} and general flavor mixing. We point out that, going beyond the minimal flavor violation hypothesis, Z-penguin amplitudes generated by charged-Higgs exchange can induce sizable modifications of K{yields}{pi}{nu}{nu} rates. Interestingly, these effects scale as tan{sup 4}{beta} at the amplitude level. For large values of tan{beta}, this mechanism allows deviations from the SM expectations even for tiny (Cabibbo-Kobayashi-Maskawa-type) off-diagonal mixing terms in the right-handed squark sector.

• OSTI ID: 20776904
• Journal Information: Physical Review. D, Particles Fields, Vol. 73, Issue 5; Other Information: DOI: 10.1103/PhysRevD.73.055017; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
HIGGS BOSONS
HIGGS MODEL
KAONS NEUTRAL LONG-LIVED
KAONS PLUS
KOBAYASHI-MASKAWA MATRIX
NEUTRINOS
PIONS PLUS
SEMILEPTONIC DECAY
STANDARD MODEL
SUPERSYMMETRY