arXiv subjects

D. A. Demir

Publications and source records attributed to D. A. Demir.

39 records · Page 3Linked to original sources

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↗

arXiv1995

Radiative $B^{}\to Bγ$ and $D^{}\to Dγ$ decays in light cone QCD sum rules

The radiative decays $ B^{*} (D^{*})\rightarrow B(D) γ$ are investigated in the framework of light cone QCD sum rules. The transition amplitude and decay rates are estimated.It is shown that our results on branching ratios of D meson decays are in good agreement with the existing experimental data.

hep-ph↗

D. A. Demir

Single Leptoquark Production at TeV Energy $γp$ Colliders

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

Radiative $B^{*}\to Bγ$ and $D^{*}\to Dγ$ decays in light cone QCD sum rules

Radiative $B^{}\to Bγ$ and $D^{}\to Dγ$ decays in light cone QCD sum rules