Experimental status and prospects of the "Kpi puzzle"
  We present a summary of the latest measurements of branching fractions and direct CP violations in the charmless hadronic two-body B decays B -> K^+ pi^-, K^+ pi^0, K^0 pi^+ and K^0 pi^0, performed by the Belle, BABAR, CDF and CLEO experiments. The interpretations and the future prospects about discrepancies, called "Kpi puzzle", between theoretical expectations and measurements are discussed. 
Yuuji Unno
hep-ex