000002248 001__ 2248
000002248 005__ 20210306062456.0
000002248 037__ $$aBELLE2-CONF-PROC-2021-006
000002248 041__ $$aeng
000002248 100__ $$aNiharika Rout
000002248 245__ $$aDetermination of CKM angle $ \phi_{3} $ at Belle and Belle II
000002248 260__ $$a$$c2021-03-05
000002248 300__ $$a4
000002248 520__ $$aWe present the measurement of the angle $ \phi_{3} $ using a model-independent Dalitz plot analysis of $ B^{\pm} \to DK^{\pm}, D \to K_{S}^{0}\pi^{+}\pi^{-} $ decays, which currently provides the best sensitivity. The method uses, as input, measurements of the strong phase of the $ D \to K_{S}^{0}\pi^{+}\pi^{-} $ amplitude from the BESIII collaboration. This is the first measurement using the combined Belle and Belle II data-set of the order of 1 ab$ ^{-1} $. With the ultimate Belle II data sample of 50 ab$ ^{-1} $, a determination of $ \phi_{3} $ with a precision of 1$^{\rm o} $ or better is foreseen.
000002248 6531_ $$a$ \phi_{3} $, CKM angle
000002248 8560_ $$fniharikarout@physics.iitm.ac.in
000002248 8564_ $$uhttps://docs.belle2.org/record/2248/files/BELLE2-CONF-PROC-2021-006.pdf
000002248 8564_ $$uhttps://docs.belle2.org/record/2248/files/V2.pdf