141,801 research outputs found
BSM Primary Effects: The complete set of predictions from the dimension-6 BSM Lagrangian
We present a physical parameterization of the leading effects beyond the SM
(BSM), that give us, at present, the best way to constrain heavy new-physics at
low-energies. We call these effects that constrain all possible interactions at
the dimension 6 level, BSM Primary effects; there are 8 primaries related to
Higgs physics, 3 related to Triple Gauge Couplings and 7 related to Z- pole
measurements at LEP. Starting from these experimentally measurable deformations
(and not operators), we construct the dimension 6 Lagrangian in a bottom up
way. We, thus, show that other BSM effects are not independent from the primary
ones and we provide the explicit correlations. We also discuss the theoretical
expectation for the size of these BSM primaries in some well-motivated BSM
theories.Comment: Based on talk given at DIS 2014. This talk was completely based on
arXiv:1405.0181, which was written in collaboration with A. Pomarol and F.
Riv
Heavy Quarkonium Potential Model and the State of Charmonium
A theoretical explanation of the observed splittings among the P~states of
charmonium is given with the use of a nonsingular potential model for heavy
quarkonia. We also show that the recently observed mass difference between the
center of gravity of the states and the state of
does not provide a direct test of the color hyperfine interaction in heavy
quarkonia. Our theoretical value for the mass of the state is in
agreement with the experimental result, and its E1 transition width is
341.8~keV. The mass of the state is predicted to be 3622.3~MeV.Comment: 15 page REVTEX documen
Signature of strong atom-cavity interaction on critical coupling
We study a critically coupled cavity doped with resonant atoms with
metamaterial slabs as mirrors. We show how resonant atom-cavity interaction can
lead to a splitting of the critical coupling dip. The results are explained in
terms of the frequency and lifetime splitting of the coupled system.Comment: 8 pages, 5 figure
Bc spectroscopy in a quantum-chromodynamic potential model
We have investigated spectroscopy with the use of a
quantum-chromodynamic potential model which was recently used by us for the
light-heavy quarkonia. We give our predictions for the energy levels and the
1 transition widths. We also find, rather surprisingly, that although
is not a light-heavy system, the heavy quark effective theory with the
inclusion of the and corrections is as successful
for as it is for and .Comment: 10 page ReVTeX pape
Economic Fluctuations and Stabilizing Policies
The paper discusses the extent and spread of economic fluctuations across selected countries during the Great Depression and the last over 40 years. Also, it analyses the possible causes of each major business cycle, the roles that the fiscal and monetary policies have played to counter them, and the inherent limitations of these policies in getting a total rid of all such fluctuations.
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