Form factors for the semileptonic decay B → π
ν
ν- 作者：Simone ; J.N.
- 刊名：Nuclear Physics B - Proceedings Supplements
- 出版年：2003
- 期刊代码：46_09205632
- 类别：ph
- 出版时间：May, 2003
- 卷：119
- 期：Complete
- 页码：632-634
- 文件大小：239 K
摘要
Previously published determinations for B → πν form factors are fit using a parameterization proposed by Becirevic and Kaidalov which incorporates physical constraints on the form factors. We check the consistency of the extrapolation to pπ = 0 by testing phenomenological expectations in the combined chiral and heavy quark limits. We then examine how well current lattice results constrain the form factors in extrapolations to the maximum pion recoil limit.
ν form factors are fit using a parameterization proposed by Becirevic and Kaidalov which incorporates physical constraints on the form factors. We check the consistency of the extrapolation to pπ = 0 by testing phenomenological expectations in the combined chiral and heavy quark limits. We then examine how well current lattice results constrain the form factors in extrapolations to the maximum pion recoil limit.