Z -> l(+)l(-) and W ->nu(l)l(+) decays in the noncommutative standard model

Iltan, EO
We study Z-->l(+)l(-) and W-->nu(l)l(+) decays in the standard model including noncommutative effects. We observe that these effects appear in the flavor-dependent part of the decay widths of the processes under consideration and, therefore, they are more effective for the heavy lepton decays.


Lambda(b) -> Lambda l(+)l(-) decay in universal extra dimensions
Alıyev, Tahmasıb; Savcı, Mustafa (Springer Science and Business Media LLC, 2007-03-01)
We study the exclusive Lambda(b) ->Lambda l(+)l(-)(l = mu,Gamma) decay in the Appelquist, Chang, Dobrescu model with a single universal extra dimension. We investigate the sensitivity of the branching ratio, lepton polarization and forward-backward asymmetry A(FB) to the compactification parameter 1/R. We obtain the result that the branching ratio for the Lambda(b) -> Lambda l(+)l(-) (l = mu, T) decay changes about 25% compared to the SM value when 1/R = 250 GeV, and the zero position of the forward-backwar...
Semileptonic B ->eta iota nu decay in light cone QCD
Alıyev, Tahmasıb; Özpineci, Altuğ (American Physical Society (APS), 2003-05-01)
We study the semileptonic decay B --> eta/nu. The transition form factors for this decay are calculated by using light cone QCD sum rules. The branching ratio is estimated to be B(B --> etanu) = (1.6 +/- 0.8) x 10(-5).
Silicon nanowire network metal-semiconductor-metal photodetectors
Mulazimoglu, Emre; Coskun, Sahin; Gunoven, Mete; Bütün, Bayram; Özbay, Ekmel; Turan, Raşit; Ünalan, Hüsnü Emrah (AIP Publishing, 2013-08-19)
We report on the fabrication and characterization of solution-processed, highly flexible, silicon nanowire network based metal-semiconductor-metal photodetectors. Both the active part of the device and the electrodes are made of nanowire networks that provide both flexibility and transparency. Fabricated photodetectors showed a fast dynamic response, 0.43 ms for the rise and 0.58 ms for the fall-time, with a decent on/off ratio of 20. The effect of nanowire-density on transmittance and light on/off behavior...
Non-Riemannian gravity and the Einstein-Proca system
Dereli, T; Onder, M; Schray, J; Tucker, RW; Wang, C (IOP Publishing, 1996-08-01)
We argue that all Einstein-Maxwell or Einstein-Proca solutions to general relativity may be used to construct a large class of solutions (involving torsion and non-metricity) to theories of non-Riemannian gravitation that have been recently discussed in the literature.
'Good propagation' and duality invariance constraints on scalar, gauge vector and gravity actions
Deser, Stanley; McCarthy, Jim; Sarıoğlu, Bahtiyar Özgür (IOP Publishing, 1999-03-01)
We present some consequences of non-anomalous propagation requirements on various massless fields. Among the models of nonlinear electrodynamics we show that only the Maxwell and Born-Infeld models also obey duality invariance. Separately we show that, for actions depending only on the F-mu nu(2) invariant, the permitted models have L similar to root 1 + F-2. We also characterize acceptable vector-scalar systems. Finally, we find that wide classes of gravity models share with the Einstein model the null nat...
Citation Formats
E. Iltan, “Z -> l(+)l(-) and W ->nu(l)l(+) decays in the noncommutative standard model,” PHYSICAL REVIEW D, pp. 0–0, 2002, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/64193.