%0 Journal Article %1 Lu2012B_s %A Lü, Lin-Xia %A Yang, Xing-Qiang %A Wang, Zong-Chang %D 2012 %K bdecay %T \$B\_s l^+ l^-\$ decays in the topcolor-assisted technicolor model %U http://arxiv.org/abs/1204.3361 %X Using the updated form factors within the light-cone QCD sum rule approach, we calculate the new physics contributions to rare semileptonic \$B\_s \to \phi\mu^+\mu^-, \tau^+\tau^-\$ decays from the new particles appearing in the topcolor-assisted technicolor (TC2) model. In our evaluations, we find that: (i) the branching ratio, normalized forward-backward asymmetry and lepton polarization show highly sensitivity to charged top-pions contributions and little sensitivity to \$Z'\$ contributions. The TC2 enhancements to the branching ratios of these decays can reach a factor of \$2 4\$; (ii) the NP enhancement to the forward-backward asymmetry of the decay \$B\_s\phi \mu^+\mu^-\$ is in the range -9\% to 22\%, but -10\% to 0\% for decay \$B\_s\phi \tau^+\tau^-\$ compared to the SM predictions; (iii) the TC2 model provide an enhancement of more than 30\% to the longitudinal polarization asymmetry \$P\_L\$ for decay \$B\_s\mu^+\mu^-\$, but a decrease of about 20\% to the transverse polarization asymmetry \$P\_T\$ for the decay \$B\_s\phi \tau^+\tau^-\$.

@article{Lu2012B_s, abstract = {Using the updated form factors within the light-cone QCD sum rule approach, we calculate the new physics contributions to rare semileptonic \$\bar{B}\_s \to \phi\mu^+\mu^-, \phi \tau^+\tau^-\$ decays from the new particles appearing in the topcolor-assisted technicolor (TC2) model. In our evaluations, we find that: (i) the branching ratio, normalized forward-backward asymmetry and lepton polarization show highly sensitivity to charged top-pions contributions and little sensitivity to \$Z'\$ contributions. The TC2 enhancements to the branching ratios of these decays can reach a factor of \$2 \sim 4\$; (ii) the NP enhancement to the forward-backward asymmetry of the decay \$B\_s\to \phi \mu^+\mu^-\$ is in the range -9\% to 22\%, but -10\% to 0\% for decay \$B\_s\to \phi \tau^+\tau^-\$ compared to the SM predictions; (iii) the TC2 model provide an enhancement of more than 30\% to the longitudinal polarization asymmetry \$P\_L\$ for decay \$B\_s\to \phi \mu^+\mu^-\$, but a decrease of about 20\% to the transverse polarization asymmetry \$P\_T\$ for the decay \$B\_s\to \phi \tau^+\tau^-\$.}, added-at = {2019-02-23T22:09:48.000+0100}, archiveprefix = {arXiv}, author = {L\"{u}, Lin-Xia and Yang, Xing-Qiang and Wang, Zong-Chang}, biburl = {https://www.bibsonomy.org/bibtex/203d6479dd7ac16d19e987854a1f383fa/cmcneile}, citeulike-article-id = {10573430}, citeulike-linkout-0 = {http://arxiv.org/abs/1204.3361}, citeulike-linkout-1 = {http://arxiv.org/pdf/1204.3361}, day = 29, eprint = {1204.3361}, interhash = {8f15370235322eb376598035c89db1ce}, intrahash = {03d6479dd7ac16d19e987854a1f383fa}, keywords = {bdecay}, month = may, posted-at = {2012-04-17 08:45:05}, priority = {2}, timestamp = {2019-02-23T22:15:27.000+0100}, title = {{\$B\_s \to \phi l^+ l^-\$ decays in the topcolor-assisted technicolor model}}, url = {http://arxiv.org/abs/1204.3361}, year = 2012 }