تقرير
Lepton polarization asymmetry and forward backward asymmetry in exclusive B->K_1 tau^(+)tau^(-) decay in universal extra dimension scenario
| العنوان: | Lepton polarization asymmetry and forward backward asymmetry in exclusive B->K_1 tau^(+)tau^(-) decay in universal extra dimension scenario |
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| المؤلفون: | Saddique, Asif, Aslam, M. Jamil, Lu, Cai-Dian |
| المصدر: | Eur.Phys.J.C56:267-277,2008 |
| سنة النشر: | 2008 |
| المجموعة: | High Energy Physics - Phenomenology |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology |
| الوصف: | Decay rate, forward-backward asymmetry and polarization asymmetries of final state leptons in B-> K_{1}tau ^{+}tau ^{-}, where K_{1} is the axial vector meson, are calculated in Standard Model and in the universal extra dimension (UED) model. The sensitivity of the observables on the compactification radius $R$, the only unknown paramter in UED model, is studied. Finally, the helicity fractions of the final state K_{1} are calculated and their dependence on the compactification radius is discussed. This analysis of helicity fraction is briefly extended to B->K^{*}l ^{+}l ^{-}(l =e,mu) and compared with the other approaches exist in the literature Comment: 19 pages, 6 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1140/epjc/s10052-008-0643-1 |
| URL الوصول: | http://arxiv.org/abs/0803.0192 |
| رقم الأكسشن: | edsarx.0803.0192 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1140/epjc/s10052-008-0643-1 |
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