Searcharxiv⌕ Search

arXiv subjects

E. Iltan

Publications and source records attributed to E. Iltan.

22 records · Page 2Linked to original sources
arXiv1999

B_s ---> γγdecay in the model III and 3HDM(O_2) with CP violating effects

We analyse the CP asymmetry for B_{s} -->γγin the two Higgs doublet model with tree level flavor changing currents (model III) and three Higgs doublet model with O_2 symmetry in the Higgs sector, including O_{7} type long distance effects. Further, we study the dependencies of the branching ratio Br(B_{s} --> γγ)$ and the ratio of CP-even and CP-odd amplitude squares, R=|A^{+}|^2/|A^{-}|^2, on the CP parameter sin θ. We found that, there is a weak CP asymmetry, at the order of 10^{-4}. Besides, the branching ratio Br(B_{s} --> γγ), and also R ratio, is not sensitive to the CP parameter for |\frac{\barξ^{U}_{N,tt}}{\barξ^{D}_{N,bb}}|<1.

hep-ph↗
arXiv1995

Single Leptoquark Production at TeV Energy $γp$ Colliders

The resolved and direct photon contributions to the single leptoquark (L) production process $γp\rightarrow L e$ are analysed for both scalar (S) and vector (V) leptoquarks in detail. It is shown that resolved photon contribution dominates for $M_{L}\leq 300 GeV$. For $M_{V}\geq 1 TeV$ and $M_{S}\geq 0.5 TeV$ cross section is completely determined by the direct photon conribution. The vector leptoquarks are discussed for both gauge- and non-gauge cases seperately.

hep-ph↗
arXiv1995

The CP Asymmetry in $b \to s l^+ l^-$ Decay

Using the experimental upper bound on the neutron EDM and experimental result on $b\rightarrow sγ$ branching ratio we have calculated CP asymmetry and $Γ^{2HDM}(b\rightarrow s{\it{l^{+}l^{-}}})/Γ^{SM}(b\rightarrow s{\it{l^{+}l^{-}}})$. It is shown that in the invariant dilepton mass $q^{2}$ region $(m_{ψ'}^{2}+0.2\; GeV^{2})<\;q^{2}<\;m^{2}_{b}$ the CP asymmetry is maximal and quite detectable.

hep-ph↗