论文标题
重新研究$ b $ $ {\ to} $ $ $ pp $衰减，包括$ ϕ_ {b2} $的贡献
Reinvestigating the $B$ ${\to}$ $PP$ decays by including the contributions from $ϕ_{B2}$
论文作者
论文摘要
考虑到$ b $ Mesonic分发幅度$ ϕ_ {b2} $，我们对$ b $ $ {\ to} $ $ $ pp $（其中$ p $ $ = $ $ = $ $ $π$和$ k $）的衰减与扰动QCD（pqcd）方法衰减的方法基于$ k_ {发现$ ϕ_ {b2} $对FormFactors $ f_ {0}^{b {\ to} p}（0）$的贡献与NLO校正的贡献相当。考虑到$ ϕ_ {b2} $，可以很好地解释$ b $ $ $ {\ to} $ $kπ$衰减。因此，当使用PQCD方法研究非lectonic $ b $衰减时，应认真考虑$ ϕ_ {b2} $。
Considering the $B$ mesonic distribution amplitude $ϕ_{B2}$, we reinvestigated the $B$ ${\to}$ $PP$ (where $P$ $=$ $π$ and $K$) decays with the perturbative QCD (pQCD) approach based on the $k_{T}$ factorization for three scenarios. It is found that the contributions of $ϕ_{B2}$ to formfactors $F_{0}^{B{\to}P}(0)$ and branching ratios are comparable with those from the NLO corrections. The $B$ ${\to}$ $Kπ$ decays could be well explained by considering the $ϕ_{B2}$. Hence, when the nonleptonic $B$ decays are studied withe the pQCD approach, the $ϕ_{B2}$ should be taken into account seriously.
