000000707 001__ 707
000000707 005__ 20171008062005.0
000000707 037__ $$aBELLE2-TALK-CONF-2017-091
000000707 041__ $$aeng
000000707 088__ $$aBELLE2-TALK-DRAFT-2017-048
000000707 100__ $$aHulya Atmacan
000000707 245__ $$aMeasurement of the gamma CKM angle with Belle II
000000707 260__ $$aPANIC2017$$c2017-09-01
000000707 300__ $$amult. p
000000707 500__ $$a15 + 5 min
000000707 520__ $$aThe CKM angle gamma is the least well known of the angles of the unitarity triangle and the only one that is accessible with tree-level decays in a theoretically clean way. It provides a Standard Model benchmark against which other measurements can be compared. The key method to measure gamma is through the interference between B^+ to D^0 K^+ and B^+ to \overline{D}^0 K^+ decays which occurs if the final state of the charm-meson decay is accessible to both the D^0 and \overline{D}^0 mesons. To achieve the best sensitivity, a large variety of D and B decay modes is required and is possible at Belle II experiment as almost any final state can be reconstructed including those with photons. With a data sample corresponding to an integrated luminosity of 50 ab^-1 expected by 2026, a determination of gamma with a precision of 1 degree or better is foreseen. This will approximately match the uncertainty on this parameter from indirect constraints from other measurements.
000000707 8560_ $$fdoris.yangsoo.kim@desy.de
000000707 8564_ $$uhttps://docs.belle2.org/record/707/files/BELLE2-TALK-CONF-2017-091.pdf