TY - JOUR
T1 - CP violation in τ ±→ π ±K svand D ±→π± K s
T2 - The importance of K S - K L interference
AU - Grossman, Yuval
AU - Nir, Yosef
PY - 2012
Y1 - 2012
N2 - The B-factories have measured CP asymmetries in the τ → πKS and D → KSπ modes. The KS state is identified by its decay to two pions at a time that is close to the KS lifetime. Within the Standard Model and many of its extensions, the asymmetries in these modes come from CP violation in K0 - K 0 mixing. We emphasize that the interference between the amplitudes of intermediate KS and KL is as important as the pure KS amplitude. Consequently, the measured asymmetries depend on the times over which the relevant decay rates are integrated and on features of the experiment.
AB - The B-factories have measured CP asymmetries in the τ → πKS and D → KSπ modes. The KS state is identified by its decay to two pions at a time that is close to the KS lifetime. Within the Standard Model and many of its extensions, the asymmetries in these modes come from CP violation in K0 - K 0 mixing. We emphasize that the interference between the amplitudes of intermediate KS and KL is as important as the pure KS amplitude. Consequently, the measured asymmetries depend on the times over which the relevant decay rates are integrated and on features of the experiment.
KW - B-Physics
KW - CP violation
UR - http://www.scopus.com/inward/record.url?scp=84860298044&partnerID=8YFLogxK
U2 - 10.1007/JHEP04(2012)002
DO - 10.1007/JHEP04(2012)002
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AN - SCOPUS:84860298044
SN - 1126-6708
VL - 2012
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
IS - 4
M1 - 002
ER -