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First Evidence for cos 2 beta > 0 and Resolution of the Cabibbo-Kobayashi-Maskawa Quark-Mixing Unitarity Triangle Ambiguity
(American Physical Society, 2018-12-26)
We present first evidence that the cosine of the
C
P
-violating weak phase
2
β
is positive, and hence exclude trigonometric multifold solutions of the Cabibbo-Kobayashi-Maskawa (CKM) Unitarity Triangle using a ...
Study of the process e(+)e(-) -> pi(+)pi(-)eta using initial state radiation
(American Physical Society, 2018-03-21)
We study the process
e
+
e
−
→
π
+
π
−
η
γ
, where the photon is radiated from the initial state. About 8000 fully reconstructed events of this process are selected from the BABAR data sample with an integrated ...