157,959 research outputs found
(Regular) pseudo-bosons versus bosons
We discuss in which sense the so-called {\em regular pseudo-bosons}, recently
introduced by Trifonov and analyzed in some details by the author, are related
to ordinary bosons. We repeat the same analysis also for {\em pseudo-bosons},
and we analyze the role played by certain intertwining operators, which may be
bounded or not.Comment: arXiv admin note: substantial text overlap with arXiv:1106.011
Interference of composite bosons
We investigate multi-boson interference. A Hamiltonian is presented that
treats pairs of bosons as a single composite boson. This Hamiltonian allows two
pairs of bosons to interact as if they were two single composite bosons. We
show that this leads to the composite bosons exhibiting novel interference
effects such as Hong-Ou-Mandel interference. We then investigate
generalizations of the formalism to the case of interference between two
general composite bosons. Finally, we show how one can realize interference
between composite bosons in the two atom Dicke model
Low Energy Theorems in N=1 Supersymmetric Theory
In N=1 supersymmetric theories, quasi Nambu-Goldstone (QNG) bosons appear in
addition to ordinary Nambu-Goldstone (NG) bosons when the global symmetry G
breaks down spontaneously. We investigate two-body scattering amplitudes of
these bosons in the low-energy effective Lagrangian formalism. They are
expressed by the curvature of Kahler manifold. The scattering amplitudes of QNG
bosons are shown to coincide with those of NG bosons though the effective
Lagrangian contains an arbitrary function, and those with odd number of QNG
bosons all vanish.Comment: LaTeX, 18 pages, 3 figures, typos corrected, references adde
Composite Weak Bosons at the LHC
In a composite model of the weak bosons the p-wave bosons are studied. The
state with the lowest mass is identified with the boson, which might have been
detected recently at the LHC. Specific properties of these excited bosons are
studied, in particular their decays into weak bosons, into photons and into
leptons or quarks.Comment: 8 page
Search for non-SM Higgses at LEP
The four LEP experiments, ALEPH, DELPHI, L3 and OPAL, have searched for Higgs
bosons predicted by a large number of extensions of the Standard Model. Flavor
independent searches are presented for the hZ process in which the
h decays hadronically. Search results are also presented for fermiophobic
Higgs bosons, invisibly decaying Higgs bosons, charged Higgs bosons and the
neutral Higgs bosons in the MSSM.Comment: 4 pages, 4 figures, to be published in the Proceedings of XXXVI
Rencontres de Moriond: QCD, March 200
Composite Weak Bosons at the LHC
In a composite model of the weak bosons the p-wave bosons are studied. The
state with the lowest mass is identified with the boson, which has been
observed at the LHC. Specific properties of the excited bosons are studied, in
particular their decays into weak bosons and photons. Such decays might have
been observed recently with the ATLAS detector at the Large Hadron Collider.Comment: 7 pages, no figure
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