The K-->[pi] vector form factor at zero momentum transfer on the lattice Export

@article{citeulike:666453, abstract = {We present a quenched lattice study of the form factors f+(q2) and f0(q2) of the matrix elements . We focus on the second-order SU(3)-breaking quantity [1-f+(0)], which is necessary to extract |Vus| from Kl3 decays. For this quantity we show that it is possible to reach the percent precision which is the required one for a significant determination of |Vus|. The leading quenched chiral logarithms are corrected for by using analytic calculations in quenched chiral perturbation theory. Our final result, , where the systematic error does not include the residual quenched effects, is in good agreement with the estimate made by Leutwyler and Roos. A comparison with other non-lattice computations and the impact of our result on the extraction of |Vus| are also presented.}, author = {Becirevic, D. and Isidori, G. and Lubicz, V. and Martinelli, G. and Mescia, F. and Simula, S. and Tarantino, C. and Villadoro, G.}, citeulike-article-id = {666453}, citeulike-linkout-0 = {http://dx.doi.org/10.1016/j.nuclphysb.2004.11.017}, citeulike-linkout-1 = {http://www.sciencedirect.com/science/article/B6TVC-4DW3JR9-2/2/ab03e5315611aec77cd14c81eba7bc3e}, citeulike-linkout-2 = {http://arxiv.org/abs/hep-ph/0403217}, day = {17}, doi = {10.1016/j.nuclphysb.2004.11.017}, journal = {Nuclear Physics B}, keywords = {factor, form, kaon, lattice, qcd}, month = {January}, number = {1-2}, pages = {339--362}, posted-at = {2006-05-23 20:12:47}, priority = {0}, title = {The K-->[pi] vector form factor at zero momentum transfer on the lattice}, url = {http://dx.doi.org/10.1016/j.nuclphysb.2004.11.017}, volume = {705}, year = {2005} }

TY - JOUR ID - citeulike:666453 L3 - citeulike-article-id:666453 N2 - We present a quenched lattice study of the form factors f+(q2) and f0(q2) of the matrix elements . We focus on the second-order SU(3)-breaking quantity [1-f+(0)], which is necessary to extract |Vus| from Kl3 decays. For this quantity we show that it is possible to reach the percent precision which is the required one for a significant determination of |Vus|. The leading quenched chiral logarithms are corrected for by using analytic calculations in quenched chiral perturbation theory. Our final result, , where the systematic error does not include the residual quenched effects, is in good agreement with the estimate made by Leutwyler and Roos. A comparison with other non-lattice computations and the impact of our result on the extraction of |Vus| are also presented. IS - 1-2 JF - Nuclear Physics B EP - 362 TI - The K-->[pi] vector form factor at zero momentum transfer on the lattice VL - 705 SP - 339 KW - factor KW - form KW - kaon KW - lattice KW - qcd AU - Becirevic, D AU - Isidori, G AU - Lubicz, V AU - Martinelli, G AU - Mescia, F AU - Simula, S AU - Tarantino, C AU - Villadoro, G PY - 2005/01/17/ UR - http://dx.doi.org/10.1016/j.nuclphysb.2004.11.017 ER -