Belle II status and its prospects for the CKM angle φ3

	

		The Belle II experiment at the SuperKEKB asymmetric-energy e+e- collider at KEK, Japan, is a substantial upgrade of the previous B-factory, the Belle experiment.  The SuperKEKB luminosity will be 40 times higher, and by 2030 Belle II will collect 50 times more data than Belle. The high statistical precision will put Belle II at the forefront of indirect probes of new physics through high-precision measurements of rare decays and CP-violation in heavy quarks and leptons. Belle II will also conduct unique direct searches for new-physics particles with masses in the approximate range 10 MeV – 10 GeV. An important part of the program for precision tests of the Standard Model is measurement of the CKM angle φ3. Among the three CKM angles, φ3 is the least well measured, and the only one that is accessible with tree-level decays. This gives it a special role in tests for new physics. With the ultimate Belle II data sample of 50 ab−1, a determination of φ3 with a precision of 1 degree or better is foreseen. In this talk, I will describe the Belle II experiment and its current status, discuss the overall physics program including direct searches for new physics, and then focus on the methods for measuring φ3 and its prospects at Belle II.