TY - JOUR
T1 - Testing for new physics in singly Cabibbo suppressed D decays
AU - Grossman, Yuval
AU - Kagan, Alexander L.
AU - Zupan, Jure
PY - 2012/6/21
Y1 - 2012/6/21
N2 - We devise tests for a new physics origin of the recently measured direct CP violation in singly Cabibbo-suppressed D decays. The tests take the form of sum rules for the CP asymmetries in various D decays. They are based on the fact that within the standard model CP violation arises from interference of the dominant tree amplitudes with the ΔI=1/2 penguin amplitudes. The sum rules would be violated if the observed CP violation is due to new physics contributions to the effective weak Hamiltonian that change the isospin by ΔI=3/2.
AB - We devise tests for a new physics origin of the recently measured direct CP violation in singly Cabibbo-suppressed D decays. The tests take the form of sum rules for the CP asymmetries in various D decays. They are based on the fact that within the standard model CP violation arises from interference of the dominant tree amplitudes with the ΔI=1/2 penguin amplitudes. The sum rules would be violated if the observed CP violation is due to new physics contributions to the effective weak Hamiltonian that change the isospin by ΔI=3/2.
UR - https://www.scopus.com/pages/publications/84862748895
U2 - 10.1103/PhysRevD.85.114036
DO - 10.1103/PhysRevD.85.114036
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AN - SCOPUS:84862748895
SN - 1550-7998
VL - 85
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 11
M1 - 114036
ER -