scholarly journals The Possibility of Meson-Lepton and Dilepton Resonances

1987 ◽  
Vol 40 (3) ◽  
pp. 283
Author(s):  
SR Choudhury ◽  
GC Joshi ◽  
BHJ McKellar ◽  
EW Vogt
Keyword(s):  
Experimental Data ◽  
Branching Ratios ◽  
Composite Model ◽  
Charged Leptons ◽  
Colour Octet

Recent hints in experimental data of a fJ.1T resonance at 429 MeV have led us to speculate about the possibility of meson-lepton and dilepton resonances. We show that the proposed fJ.7T resonance at 429 MeV is not in conflict with the muon g-2 measurements, and that it could be interpreted as a partner of the excited charged leptons possibly seen at CERN. Moreover, a composite model by Fritzsch and Mandelbaum predicts not only a flavour octet of meson-muon resonances of which this could be one, but also dilepton resonances which were suggested by Ramm as an explanation of the lobe structure in the fJ.7T data. The observed widths and branching ratios of the resonances can be interpreted to suggest that the colour-octet states are considerably smaller than the colour singlets.

B0 → J/ψf2(1270) decay in QCD factorization

2012 ◽  
Vol 90 (12) ◽  
pp. 1201-1208 ◽  
Author(s):  
Mahboobeh Sayahi ◽  
Hossein Mahraban
Keyword(s):  
Experimental Data ◽  
B Meson ◽  
Factorization Method ◽  
Branching Ratios ◽  
Hadronic Decay ◽  
Light Meson ◽  
Qcd Factorization ◽  
Effective Coefficients

In this paper, the hadronic decay B0 → J/ψf2(1270) has been analyzed using the “QCD factorization” method. The effective coefficients [Formula: see text] have been calculated for three helicity states (h = 0, +, –) which give three contributions of amplitude. We have assumed two scenarios for J/ψ. First, we have considered that J/ψ behaves as a light meson compared to the B meson and second, we have considered the mass of J/ψ in our calculations meaning that mJ/ψ/mb is held fixed. The branching ratios are calculated in these two scenarios and also in different energy scales (μ = mb, μ = mb/2, and μ = 2mb). The obtained results are in agreement with available experimental data for the second scenario and μ = 2mb.

scholarly journals Computational Modelling of Glucose Uptake in the Enterocyte

Physiome ◽  
2022 ◽  
Author(s):  
Nima Afshar ◽  
Soroush Safaei ◽  
David Nickerson ◽  
Peter J. Hunter ◽  
Vinod Suresh
Keyword(s):  
Experimental Data ◽  
Glucose Transporter ◽  
Computational Modelling ◽  
Glucose Absorption ◽  
Composite Model ◽  
The Other ◽  
Sodium Glucose Cotransporter ◽  
Protein Models

We describe an implemented model of glucose absorption in the enterocyte, as previously published by Afshar et al. (2019), The model used mechanistic descriptions of all the responsible transporters and was built in the CellML framework. It was validated against published experimental data and implemented in a modular structure which allows each individual transporter to be edited independently from the other transport protein models. The composite model was then used to study the role of the sodium-glucose cotransporter (SGLT1) and the glucose transporter type 2 (GLUT2), along with the requirement for the existence of the apical Glut2 transporter, especially in the presence of high luminal glucose loads, in order to enhance the absorption. Here we demonstrate the reproduction of the figures in the original paper by using the associated model. EDITOR'S NOTE (v3): Instructions within the manuscript changed, in order to properly execute the model files. Spelling of author's name corrected in filenames. (v4): Abstract fixes.

scholarly journals Computational Modelling of Glucose Uptake in the Enterocyte

2020 ◽  
Author(s):  
Nima Afshar ◽  
Soroush Safaei ◽  
David Nickerson ◽  
Peter J. Hunter ◽  
Vinod Suresh
Keyword(s):  
Experimental Data ◽  
Glucose Transporter ◽  
Computational Modelling ◽  
Glucose Absorption ◽  
Composite Model ◽  
The Other ◽  
Sodium Glucose Cotransporter ◽  
Protein Models

We describe an implemented model of glucose absorption in the enterocyte, as previously published by Afshar et al. Afshar et al. (2019), The model used mechanistic descriptions of all the responsible transporters and was built in the CellML framework. It was validated against published experimental data and implemented in a modular structure which allows each individual transporter to be edited independently from the other transport protein models. The composite model was then used to study the role of the sodium-glucose cotransporter (SGLT1) and the glucose transporter type 2 (GLUT2), along with the requirement for the existence of the apical Glut2 transporter, especially in the presence of high luminal glucose loads, in order to enhance the absorption. Here we demonstrate the reproduction of the figures in the original paper by using the associated model.

scholarly journals Lepton-flavor-violating decays of the SM-like Higgs boson $h\rightarrow e_ie_j$, and $e_i \rightarrow e_j\, \gamma $ in a flipped 3-3-1 model

2020 ◽  
Vol 2020 (4) ◽  
Author(s):  
T T Hong ◽  
H T Hung ◽  
H H Phuong ◽  
L T T Phuong ◽  
L T Hue
Keyword(s):  
Higgs Boson ◽  
Branching Ratio ◽  
High Energy ◽  
Branching Ratios ◽  
The Other ◽  
Experimental Limit ◽  
Lepton Flavor ◽  
The Standard Model ◽  
Charged Leptons ◽  
O 10

Abstract In the framework of the flipped 3-3-1 model introduced recently [R. M. Fonseca and M. Hirsch, J. High Energy Phys. 1608, 003 (2016)], the lepton-flavor-violating (LFV) decay $\mu \rightarrow 3e$ was predicted to have a large branching ratio (Br) close to the recent experimental limit. We will show that the Br of LFV decays of the standard-model-like (SM-like) Higgs boson decays (LFVHD) Br$(h\rightarrow e_ae_b)$ may also be large. Namely, Br$(h\rightarrow \mu\tau,e\tau)$ can reach values of $\mathcal{O}(10^{-4}){-}\mathcal{O}(10^{-5})$, which will reach the upcoming experimental sensitivities. On the other hand, for LFV decays of charged leptons (cLFV) $(e_b\rightarrow e_a\gamma)$, the branching ratios are well below experimental bounds.

NEW RESULT OF DIRECT CP VIOLATION IN B → π+π-π+π-

2011 ◽  
Vol 26 (17) ◽  
pp. 2899-2912 ◽  
Author(s):  
GANG LÜ ◽  
ZHEN-HUA ZHANG ◽  
XIU-YING LIU ◽  
LI-YING ZHANG
Keyword(s):  
Experimental Data ◽  
Cp Violation ◽  
Invariant Mass ◽  
Branching Ratios ◽  
Effective Parameter ◽  
Matrix Elements ◽  
Strong Constraint ◽  
Ckm Matrix ◽  
First Order ◽  
Isospin Violation

In the framework of factorization, based on the first-order of isospin violation, we study direct CP violation in the decay of [Formula: see text] including the effect of ρ–ω mixing. The CP violation depends strongly on Cabibbo–Kobayashi–Maskawa (CKM) matrix elements and the effective parameter, Nc. Recently, the experimental data for the branching ratios of [Formula: see text] are accurate and we can give the strong constraint on the range of Nc. We find that the CP violating asymmetry is large and ranges from -82% to -98% via ρ–ω mixing mechanism when the invariant mass of the π+π- pair is in the vicinity of the ω resonance. We also discuss the possibility to observe the predicted CP violating asymmetries at the LHC.

scholarly journals Study on branching ratios and direct CP asymmetries of D → PV decays

2014 ◽  
Vol 29 ◽  
pp. 1460209 ◽  
Author(s):  
Qin Qin ◽  
Hsiang-Nan Li ◽  
Cai-Dian Lü ◽  
Fu-Sheng Yu
Keyword(s):  
Experimental Data ◽  
Pseudoscalar Meson ◽  
Short Distance ◽  
D Mesons ◽  
Branching Ratios ◽  
Matrix Elements ◽  
Long Distance ◽  
Global Fit ◽  
Belle Ii ◽  
Cp Asymmetries

We study the non-leptonic two-body decays of D mesons decaying into one pseudoscalar meson (P) and one vector meson (V) in the factorization-asisted topological-amplitude approach. In this approach, the decay amplitudes are factorized into two parts, the short-distance contribution (Wilson coefficients) and the long-distance contribution (hadronic matrix elements). We predict the branching ratios of D → PV decays using a global fit with the non-perturbative parameters. Our results agree well with the experimental data. We also predict the direct CP asymmetries by combining short-distance dynamics associated with penguin operators and long-distance hadronic matrix elements determined by branching ratios. The large asymmetries in D+ → π+ρ0 and [Formula: see text] may be measurable in the LHCb and future Belle II experiments.

scholarly journals LEPTON MASS GENERATION AND FAMILY NUMBER VIOLATION MECHANISM IN THE SU(6)L⊗ U(1)Y MODEL

1998 ◽  
Vol 13 (32) ◽  
pp. 5557-5572 ◽  
Author(s):  
UMBERTO COTTI ◽  
RICARDO GAITÁN ◽  
A. HERNÁNDEZ-GALEANA ◽  
WILLIAM A. PONCE ◽  
ARNULFO ZEPEDA
Keyword(s):  
Experimental Data ◽  
Gauge Boson ◽  
Generation Mechanism ◽  
Mass Generation ◽  
Neutral Gauge Boson ◽  
Number Violation ◽  
Charged Leptons ◽  
The Masses ◽  
Lepton Family

Lepton family number violation processes arise in the SU(6) L⊗ U(1) Y model due to the presence of an extra neutral gauge boson, Z′, with family changing couplings, and due to the fact that this model demands the existence of heavy exotic leptons. The mixing of the standard Z with Z′ and the mixing of ordinary leptons with exotic ones induce together family changing couplings on the Z and therefore nonvanishing rates for lepton family number violation processes, such as [Formula: see text], [Formula: see text] and μ→eγ. Additional contributions to the processes μ→eγ and [Formula: see text] are induced from the mass generation mechanism. This last type of contributions may compete with the above one, depending on the masses of the scalars which participate in the diagrams which generate radiatively the masses of the charged leptons. Using the experimental data we compute some bounds for the mixings parameters and for the masses of the scalars.

Percolative composite model for prediction of the properties of nanocrystalline materials

1997 ◽  
Vol 12 (7) ◽  
pp. 1828-1836 ◽  
Author(s):  
Rachman Chaim
Keyword(s):  
Experimental Data ◽  
Grain Size ◽  
Grain Boundary ◽  
Nanocrystalline Materials ◽  
Composite Model ◽  
Grain Sizes ◽  
Percolation Thresholds ◽  
Definition Of ◽  
Critical Grain Size ◽  
Transport Type

A physical percolating composite model is presented for description of the changes in the transport-type properties with grain size in nanocrystalline materials. The model is based on hierarchial percolation through the different microstructural components such as grain boundaries, triple lines, and quadruple nodes at grain sizes when their respective percolation thresholds are reached. The model yields critical grain sizes at which the properties may change significantly. These grain sizes depend on the grain boundary thickness. Master curves were calculated for the elastic modulus and compared to the experimental data from the literature. Better fit was found with the experimental data in comparison to Hill's approximation model. The critical grain size at grain boundary percolation threshold is suggested as a criterion for definition of materials to exhibit nanocrystalline properties.

scholarly journals TESTING TIMES FOR SUPERSYMMETRY: LOOKING UNDER THE LAMP POST

2013 ◽  
Vol 28 (26) ◽  
pp. 1350134 ◽  
Author(s):  
AMOL DIGHE ◽  
DIPTIMOY GHOSH ◽  
KETAN M. PATEL ◽  
SREERUP RAYCHAUDHURI
Keyword(s):  
Experimental Data ◽  
Higgs Boson ◽  
Higgs Mass ◽  
Branching Ratio ◽  
Experimental Tests ◽  
Branching Ratios ◽  
Critical Study ◽  
Light Stop ◽  
Trilinear Coupling ◽  
Constrained Models

We make a critical study of two highly-constrained models of supersymmetry — the constrained minimal supersymmetric standard model (cMSSM), and the nonuniversal Higgs mass (NUHM) model — in the light of the 125–126 GeV Higgs boson, the first observation of Bs→μμ at the LHCb, and the updated B → τν branching ratio at BELLE. It turns out that these models are still allowed by the experimental data, even if we demand that there be a light stop with mass less than 1.5 TeV. The only significant effects of all these constraints are to push the mass of the light stop above ~500 GeV, and to prefer the universal trilinear coupling A0to be large and negative. We calculate the Higgs boson branching ratios to WW, ZZ, ττ and γγ in these models and show that improved experimental limits on these could put them to the most stringent experimental tests yet.

ALPHA-DECAYS TO MEMBERS OF GROUND-STATE ROTATIONAL BAND OF HEAVY EVEN-EVEN NUCLEI

2008 ◽  
Vol 17 (supp01) ◽  
pp. 29-36 ◽  
Author(s):  
CHANG XU ◽  
ZHONGZHOU REN
Keyword(s):  
Experimental Data ◽  
Angular Momentum ◽  
Rotational Band ◽  
Ground State ◽  
Daughter Nucleus ◽  
Branching Ratios ◽  
Decay Energy ◽  
Α Decay ◽  
Barrier Penetration ◽  
Excitation Probability

We apply a simple barrier penetration approach to calculate α-decay branching ratios to members of ground-state rotational band of heavy even-even nuclei. The influence of α-decay energy, the angular momentum of α-particle, and the excitation probability of the daughter nucleus is taken into account in our calculations. The theoretical branching ratios of α-transitions are found to agree with the available experimental data well.

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