%0 Generic %1 Duplancic2015Form %A Duplancic, Goran %A Melic, Blazenka %D 2015 %K eta %T Form factors of B, Bs -> eta, eta' and D, Ds -> eta, eta' transitions from QCD light-cone sum rules %U http://arxiv.org/abs/1508.05287 %X In the framework of the QCD light-cone sum rules (LCSRs) we present the analysis of all \$B, B\_s\eta^(\prime)\$ and \$D, D\_s\eta^(\prime)\$ form factors (\$f^+, f^0\$ and \$f^T\$) by including \$m\_\eta^(\prime)^2\$ corrections in the leading (up to the twist-four) and next-to-leading order (up to the twist-three) in QCD, and two-gluon contributions to the form factors at the leading twist. The SU(3)-flavour breaking corrections and the axial anomaly contributions to the distribution amplitudes are also consistently taken into account. The complete results for the \$f^0\$ and \$f^T\$ form factors of \$B,B\_s \eta^(\prime)\$ and \$D, D\_s \eta^(\prime)\$ relevant for processes like \$B \eta^(\prime) \nu\_\tau\$ or \$B\_s \eta^(\prime) l^+ l^-\$ are given for the first time, as well as the two-gluon contribution to the tensor form factors. The values obtained for the \$f^+\$ form factors are as follows: \$f^+\_B\eta(0)= 0.168^+0.042\_-0.047\$, \$|f^+\_B\_s\eta(0)|= 0.212^+0.015\_-0.013\$, \$f^+\_B\eta^\prime(0)= 0.130^+0.036\_-0.032\$, \$f^+\_B\_s\eta^\prime(0)= 0.252^+0.023\_-0.020\$ and \$f^+\_D\eta(0)= 0.429^+0.165\_-0.141\$, \$|f^+\_D\_s\eta(0)|= 0.495^+0.030\_-0.029\$, \$f^+\_D\eta^\prime(0)= 0.292^+0.113\_-0.104\$, \$f^+\_D\_s\eta^\prime(0)= 0.558^+0.047\_-0.045\$. Also phenomenological predictions for semileptonic \$B, B\_s\eta^(\prime)\$ and \$D, D\_s\eta^(\prime)\$ decay modes are given.

@misc{Duplancic2015Form, abstract = {In the framework of the QCD light-cone sum rules (LCSRs) we present the analysis of all \$B, B\_{s}\to \eta^{(\prime)}\$ and \$D, D\_{s}\to \eta^{(\prime)}\$ form factors (\$f^+, f^0\$ and \$f^T\$) by including \$m\_{\eta^{(\prime)}}^2\$ corrections in the leading (up to the twist-four) and next-to-leading order (up to the twist-three) in QCD, and two-gluon contributions to the form factors at the leading twist. The SU(3)-flavour breaking corrections and the axial anomaly contributions to the distribution amplitudes are also consistently taken into account. The complete results for the \$f^0\$ and \$f^T\$ form factors of \$B,B\_s \to \eta^{(\prime)}\$ and \$D, D\_{s} \to \eta^{(\prime)}\$ relevant for processes like \$B \to \eta^{(\prime)} \tau \nu\_{\tau}\$ or \$B\_{s} \to \eta^{(\prime)} l^+ l^-\$ are given for the first time, as well as the two-gluon contribution to the tensor form factors. The values obtained for the \$f^+\$ form factors are as follows: \$f^+\_{B\eta}(0)= 0.168^{+0.042}\_{-0.047}\$, \$|f^+\_{B\_s\eta}(0)|= 0.212^{+0.015}\_{-0.013}\$, \$f^+\_{B\eta^\prime}(0)= 0.130^{+0.036}\_{-0.032}\$, \$f^+\_{B\_s\eta^\prime}(0)= 0.252^{+0.023}\_{-0.020}\$ and \$f^+\_{D\eta}(0)= 0.429^{+0.165}\_{-0.141}\$, \$|f^+\_{D\_s\eta}(0)|= 0.495^{+0.030}\_{-0.029}\$, \$f^+\_{D\eta^\prime}(0)= 0.292^{+0.113}\_{-0.104}\$, \$f^+\_{D\_s\eta^\prime}(0)= 0.558^{+0.047}\_{-0.045}\$. Also phenomenological predictions for semileptonic \$B, B\_{s}\to \eta^{(\prime)}\$ and \$D, D\_{s}\to \eta^{(\prime)}\$ decay modes are given.}, added-at = {2019-02-23T22:09:48.000+0100}, archiveprefix = {arXiv}, author = {Duplancic, Goran and Melic, Blazenka}, biburl = {https://www.bibsonomy.org/bibtex/2fd315ace01fa668eea8b64ddc70823a0/cmcneile}, citeulike-article-id = {13709874}, citeulike-linkout-0 = {http://arxiv.org/abs/1508.05287}, citeulike-linkout-1 = {http://arxiv.org/pdf/1508.05287}, day = 21, eprint = {1508.05287}, interhash = {4d3232278e94c003cc08fdd553a38215}, intrahash = {fd315ace01fa668eea8b64ddc70823a0}, keywords = {eta}, month = aug, posted-at = {2015-08-24 09:57:50}, priority = {2}, timestamp = {2019-02-23T22:15:27.000+0100}, title = {{Form factors of B, Bs -\> eta, eta' and D, Ds -\> eta, eta' transitions from QCD light-cone sum rules}}, url = {http://arxiv.org/abs/1508.05287}, year = 2015 }