Polarization observables in rare decay B->K*(->K Pi )l+l-
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Keywords:
relativistic quark model, confinement, B-meson, rare decay, form factor, polarization observables.Abstract
Our article is devoted to the study of the B->K*(->K Pi )l+l- decay. Rare decay B->K*(->K Pi )l+l- is one of the best modes to search for new physics beyond the Standard Model (SM). A large number of observables allow for unique tests of the SM contributions. We calculate the relevant form factors in the framework of the covariant quark model with infrared confinement in the full kinematical momentum transfer region. The calculated form factors are used to evaluate branching fractions and polarization observables in the cascade decay B->K*(->K Pi )l+l-. We compare the obtained results with available experimental data and the results from other theoretical approaches. We show the relation of our helicity formalism with an approach based on the transversality amplitudes which is widely used by both experimentalists and theorists.References
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3. Aaij R. et al. LHCb Collaboration Measurement of form-factor independent observables in the decay 0 0Bk // Phys. Rev. Lett. – 2013. – Vol.111. – P. 191-801.
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5. Zhaugasheva S.A., Saidullaeva G.G., Nurbakova G.S., Khabyl N., Bekbaev A.K. Rare bs - decays in the covariant quark model // International Journal of mathematics and physics 5. – 2014. – No. 2. – P. 68-76.
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7. Ganbold G., Gutsche T., Ivanov M. A. and Lyubovitskij V. E. On the meson mass spectrum in the covariant confined quark model // J. Phys. G. – 2015. – Vol.42. – P. 075002.
8. Kruger F. and Matias J. Probing New Physics Via the Transverse Amplitudes of B0-> K*0(-> K-pi+) l+l- at Large Recoil // Phys. Rev. D. – 2005. – Vol.71. – P. 094009.
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13. Pescatore L. LHCb Collaboration Rare decays at the LHCb experiment // http://arxiv.org/abs/14
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Nurbakova, G., Habyl, N., Mukushev В., & Tyulemissov, Z. (2016). Polarization observables in rare decay B->K*(->K Pi )l+l-. International Journal of Mathematics and Physics, 7(1). Retrieved from https://ijmph.kaznu.kz/index.php/kaznu/article/view/166
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Nuclear Physics and Nanotechnology
