8,964 research outputs found
New Constraints on General Slepton Flavor Mixing
We explore the phenomenological implications on charged lepton flavor
violating (LFV) processes from slepton flavor mixing within the Minimal
Supersymmetric Standard Model. We work under the model-independent hypothesis
of general flavor mixing in the slepton sector, being parametrized by a
complete set of dimensionless delta^AB_ij (A,B = L,R; i,j = 1, 2, 3)
parameters. The present upper bounds on the most relevant LFV processes,
together with the requirement of compatibility in the choice of the MSSM
parameters with the recent LHC and (g-2) data, lead to updated constraints on
all slepton flavor mixing parameters. A comparative discussion of the most
effective LFV processes to constrain the various generation mixings is
included.Comment: 42 pages, 19 figures. Minor changes, version to appear in PR
Updated Constraints on General Squark Flavor Mixing
We explore the phenomenological implications on non-minimal flavor violating
(NMFV) processes from squark flavor mixing within the Minimal Supersymmetric
Standard Model. We work under the model-independent hypothesis of general
flavor mixing in the squark sector, being parametrized by a complete set of
dimensionless delta^AB_ij (A,B = L, R; i,j = u, c, t or d, s, b) parameters.
The present upper bounds on the most relevant NMFV processes, together with the
requirement of compatibility in the choice of the MSSM parameters with the
recent LHC and g-2 data, lead to updated constraints on all squark flavor
mixing parameters.Comment: 30 pages, 7 figures. arXiv admin note: text overlap with
arXiv:1304.2783, arXiv:1109.623
Exploring sizable triple Higgs couplings in the 2HDM
An important task at future colliders is the measurement of the triple Higgs
coupling. Depending on its size relative to the Standard Model (SM) value,
certain collider options result in a higher experimental accuracy. Within the
framework of Two Higgs Doublet Models (2HDM) type I and II we investigate the
allowed ranges for all triple Higgs couplings involving at least one light,
SM-like Higgs boson. We take into account theoretical constraints (unitarity,
stability), experimental constraints from direct Higgs-boson searches,
measurements of the SM-like Higgs-boson properties, flavor observables and
electroweak precision data. We find that the SM-type triple Higgs coupling
w.r.t. its SM value, , can range between and . Depending on which value is realized, the HL-LHC can
compete with, or is clearly inferior to the ILC. We find the coupling
between and . Triple Higgs couplings
involving two heavy Higgs bosons, , and
can reach values up to , roughly independent
of the 2HDM type. This can lead to potentially strongly enhanced production of
two Higgs-bosons at the HL-LHC or high-energy colliders.Comment: 44 pages, 16 figure
Sensitivity to the Higgs sector of SUSY-seesaw models via LFV tau decays
Here we study and compare the sensitivity to the Higgs sector of the
SUSY-seesaw models via the LFV tau decays: tau-> 3 mu, tau->K^{+}K^{-}, tau->mu
eta and tau-> mu f_{0}. We emphasize that, at present, the two later channels
are the most efficient ones to test indirectly the Higgs particles.Comment: 4 pages, 3 figures, conference SUSY09 Boston (M.Herrero
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