A cosmological point of view. Retrofitted gravity mediation without the gravitino -overproduction problem. A comparison was also performed with calculations using other reaction rates compilations available in literature. Isotope ratio in stellar atmospheres and nucleosynthesis. Primordial or big bang nucleosynthesis BBN is now a parameter free theory whose predictions are in good overall agreement with observations. We also show that it is possible to obtain a GeV light Higgs in our setup.
During the cooling phase, the neutral current interactions of muon and taon neutrinos appear to be responsible for some interesting nucleosynthesis. We also evaluate the stop lifetime for the case when the gravitino can be approximated by the goldstino state. However, there remain, a yet unexplained, discrepancy of a factor , between the calculated and observed lithium primordial abundances, that has not been reduced, neither by recent nuclear physics experiments, nor by new observations. Also, the tunneling of photon and gravitino beyond this semiclassical approximation are presented separately. The right-handed sneutrino and the B-L gaugino can both be viable dark matter candidates with a large cross section. It is shown that big bang nucleosynthesis sets more stringent constraints than those obtained from Solar System tests. A wide variety of Type I supernova models, most based upon accreting white dwarf stars, are also explored using the expected light curves, spectra, and nucleosynthesis as diagnostics. The abundance of these isotopes therefore depends strongly on the neutrino flavor oscillation due to the Mikheyev-Smirnov-Wolfenstein MSW effect.
We present a general approach to the treatment of isomers in stellar nucleosynthesis codes and discuss a few illustrative examples. Particular attention is given to the comparison between the predicted and observed abundances, which yields a measurement of the cosmic baryon content.
We show that the constraints on GMSB theories from the gravitino cosmology can be significantly relaxed if the messenger-spurion coupling is temperature dependent.
The analysis searches for decays of the Higgs boson produced along with two forward jets, as enhanced by vector boson fusion Higgs boson production, leading to a final state of at least one photon, missing transverse momentum, and two forward jets. Comparison of baryonic density arguments from Lyman-alpha clouds, x-ray gas in clusters, and the microwave anisotropy are made.
We show that these constraints are satisfied in large regions of the parameter space and, as a result, the late invisible decays to and of the gravitino can be responsible for the entire dark matter relic abundance. Neutral currents, supernovae neutrinos, and nucleosynthesis. We also develop an analytical treatment of non-thermal hadron propagation in the early universe, and use this to derive analytical estimates for light-element production and in turn on decaying particle lifetimes and abundances.
However, there remain, a yet unexplained, discrepancy of a factorbetween the calculated and observed lithium primordial abundances, that has not been reduced, neither by recent nuclear physics experiments, nor by new observations. The explicit operator construction is found to be at variance with some previously reported claims. The result confirms the theoretical evaluation on which the BBN in the precision era relies.
I speculate that Hoyle must not have thoroughly proofread the draft written in by E. Quantum corrections of the action for both cases are found to be proportional to the semiclassical contribution. The most attractive feature of the spallation process is the systematic production of Pm and Tc and the possible synthesis of actinides and sub-actinides.
We extend our previous study of supersymmetric Higgs inflation 140 the context of no-scale supergravity and grand unification, to include models based on the flipped SU 5 and the Pati-Salam group. We calculate nucleosynthesis with the initial electron fraction Ye ranging from 0.
This concordance stands as a major success of the hot big bang. In particular, we analyze the constraints that big bang nucleosynthesis places upon the possible time variation of fundamental constants, along with constraints on the nature and origin of dark matter and dark energy, long-lived supersymmetric particles, gravity waves, and the primordial magnetic field.
In the framework of MSSM inflation, matter and gravitino production are here investigated through the decay of the fields which are coupled to the udd inflaton, a gauge-invariant combination of squarks. In this case, the phenomenology at the LHC is determined by the R-parity violating decays of the NLSP which can be a bino-like or a higgsino-like neutralino or a stau.
Moduli mediation without moduli-induced gravitino problem. Reheating, thermalization and non-thermal gravitino production in MSSM inflation. In particular, it is shown that the new Pop II 6 Li results strongly support the argument that the Spite Plateau lithium is a good estimate of the primordial value. The quark-hadron phase transition and primordial nucleosynthesis.
Using a novel approach to describing bilinear R-parity violation, we compute decay rates of kej gravitino and the possible NLSP. The gravitino -stau scenario after catalyzed big bang nucleosynthesis.
Ken le Survivant
As a concrete nuclear target we use the 66Zn isotope, which belongs to the iron group nuclei and plays prominent role in stellar nucleosynthesis at core collapse supernovae environment. This robustness remains even through major model variations such as an assumed first-order quark-hadron phase transition. Big bang photosynthesis and pregalactic nucleosynthesis of light elements.
From p reheating to nucleosynthesis. The energy transfer to the MSSM quanta is very efficient, since full thermalization is achieved after only O 40 complete oscillations. The existence of those elements in the interstellar medium would epusode possible, ultimately, vv formation of heavier elements iron peak and above [fr.
This can naturally explain the smallness of the matter parity breaking in the visible sector.
We derive the corresponding predictions for the scalar tilt and the tensor-to-scalar ratio in cosmic microwave background perturbations, and fpisode discuss gravitino production following inflation. When combined with detailed models, BBN, the CMB anisotropy and nuclear astrophysics can provide survlvant with information about the populations. Big bang nucleosynthesis – Predictions and uncertainties.
The abundance patterns inside the jets vr similar to that of the r-elements in the solar system. Isotope ratio in stellar atmospheres and nucleosynthesis.
Retrofitted gravity mediation without the gravitino wurvivant problem. Like the previous SU 5 GUT model, these yield a class of inflation models whose inflation predictions interpolate between those of the quadratic chaotic inflation and Starobinsky-like inflation, while also avoiding tension with proton decay limits. Primordial nucleosynthesis in the new cosmology. Contrary to Dirac particles, Majorana-particle propagators are shown to differ from the simple linear gamma mu p submu, structure.
Charge-current and neutral current ”preheating” of iron lying outside the shock front appears to be significant in the few milliseconds near shock breakout. The striking prediction of this scenario is the detection of a pseudoscalar Higgs boson in the search for top-top resonances at LHC, rendering it completely testable.
Japan-Culture – Dragon Ball
Finally, in light of our calculations, we consider potential implications of upper limits on the gravitino abundance for models of inflation, with particular attention to scenarios for inflaton decays in supersymmetric Starobinsky-like models.
Our results show that novae can produce 22 Na, 26 Al, and other intermediate mass nuclei in interesting amounts. Search for lightest neutralino and stau pair production in light gravitino scenarios with stau NLSP.
This tension comes from the longevity of the NLSPs, which can destroy the successful predictions of the standard primordial nucleosynthesis. We studied previously the impact on light-element abundances of gravitinos decaying during or after Big-Bang nucleosynthesis BBN.
Primordial nucleosynthesis is one of the three evidences for the Big-Bang model together with the expansion of the Universe and the Cosmic Microwave Background.