New physics effects to the lepton polarizations in the B -> Kl(+)l(-) decay

Download

index.pdf

Date

2001-09-01

Author

Alıyev, Tahmasıb
Özpineci, Altuğ
Savcı, Mustafa

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

24
views

0
downloads

Using the general, model independent form of the effective Hamiltonian, the general expressions of the longitudinal, normal, and transversal polarization asymmetries for l(-) and l(+) and combinations of them for the exclusive B-->Kl(+)l(-) decay are found. The sensitivity of lepton polarizations and their combinations on new Wilson coefficients are studied. It is found that there exist regions of Wilson coefficients for which the branching ratio coincides with the standard model result while the lepton polarizations differ substantially from the standard model prediction. Hence, studying lepton polarization in these regions of new Wilson coefficients can serve as a promising tool for establishing new physics beyond the standard model.

Subject Keywords

Higgs doublet model, Rare B-Decays, B->K-Asterıs-i(+)L(-) Decay, Supersymmetric theories, Systematic analysis, Supergravity Model, Standard Model, B->(K,K-Asterısk)L(+)L(-), B->X(S)Tau(+)Tau(-), B->S-Gamma

URI

https://hdl.handle.net/11511/48982

Journal

PHYSICAL REVIEW D

DOI

https://doi.org/10.1103/physrevd.64.055007

Collections

Department of Physics, Article

Suggestions

OpenMETU
Core

New physics effects in Lambda(b)->Lambda l(+)l(-) decay with lepton polarizations Alıyev, Tahmasıb; Özpineci, Altuğ; Savcı, Mustafa (2002-06-01) We study lepton polarization asymmetries in the Lambda(b)-->Lambdal(+)l(-) decay using the most general model independent effective Hamiltonian. The dependence of the lepton polarizations and their combinations on the new Wilson coefficients are studied in detail. It is observed that there is a region for the new Wilson coefficients for which the branching ratio coincides with the standard model prediction, while lepton polarizations show considerable departure from the standard model.
The exclusive B -> (K, K*)l(+)l(-) decays in a CP softly broken two Higgs doublet model Erkol, G; Turan, Gürsevil (2002-07-22) We study the differential branching ratio, forward-backward asymmetry, CP-violating asymmetry, CP-violating asymmetry in the forward-backward asymmetry and polarization asymmetries in the B --> Kl(+)l(-) and B --> K*l(+)l(-) decays in the context of a CP softly broken two Higgs doublet model. We analyze the dependencies of these observables on the model parameters by paying a special attention to the effects of neutral Higgs boson (NHB) exchanges and possible CP-violating effects. We find that NHB effects a...
New physics effects in the rare B-s -> gamma l(+)l(-) decays with a polarized photon Yilmaz, UO; Sirvanli, BB; Turan, Gürsevil (Springer Science and Business Media LLC, 2003-09-01) Using the most general model independent form of the effective Hamiltonian, the rare B-s --> gammal(+)l(-) decays are studied by taking into account the polarization of the photon. The total and the differential branching ratios for these decays, when the photon is in the positive or the negative helicity state, are presented. The dependence of these observables on the new Wilson coefficients is studied. Also is investigated the sensitivity of the 'photon polarization asymmetry' in B-s-->gammal(+)l(-) decay...
New supersymmetric solutions in N=2 matter coupled AdS(3) supergravities Değer, Nihat Sadık; Sarıoğlu, Bahtiyar Özgür (2006-01-01) We construct new 1/2 supersymmetric solutions in D = 3, N = 2, matter coupled, U(1) gauged supergravities and study some of their properties. We do this by employing a quite general supersymmetry breaking condition, from which we also redrive some of the already known solutions. Among the new solutions, we have an explicit nontopological soliton for the non-compact sigma model, a locally flat solution for the compact sigma model and a string-like solution for both types of sigma models. The last one is smo...
The b -> sgg decay in the two and three Higgs doublet models with CP violating effects Goksu, A; Iltan, EO; Solmaz, L (2001-04-20) We study the decay width and CP asymmetry of the inclusive process b --> sgg (g denotes gluon) in the three and two Higgs doublet models with complex Yukawa couplings. We analyze the dependencies of the differential decay width and CP asymmetry to the s-quark energy E-s and CP violating parameter theta. We observe that there exist a considerable enhancement in the decay width and CP asymmetry is at the order of 10(-2). Further, it is possible to predict the sign of C-7(eff) using the CP asymmetry.

Citation Formats

T. Alıyev, A. Özpineci, and M. Savcı, “New physics effects to the lepton polarizations in the B -> Kl(+)l(-) decay,” PHYSICAL REVIEW D, pp. 0–0, 2001, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/48982.