TY  - JOUR
AU  - Biswas, A.
AU  - Sinha, N.
AU  - Abbas, G.
PY  - 2015
DA  - 2015//
TI  - Nonleptonic decays of charmed mesons into two pseudoscalars
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 014032
EP  - 16pp
VL  - 92
IS  - 1
PB  - Amer Physical Soc
AB  - We examine the role of resonant coupled channel final state interactions (FSIs), as well as weak annihilation and exchange contributions, in explaining all the two-body hadronic D -> PP decay modes. In the un-unitarized amplitudes we include modified Wilson coefficients with nonfactorizable corrections as parameters. For the hadronic form factors, the z-series expansion method is used to get the q(2) dependence. The FSI effects are incorporated via a phenomenological approach with widths of resonances to various channels taken from observations where available, and others as additional parameters to be determined from fits of all the theoretical rates to the measured ones. Our results for the rather hard to explain D-0 -> K+K-, pi(+)pi(-) are in agreement with measured values. We demonstrate that both weak exchange and FSI effects are required to get the correct branching ratio for the D-0 -> K-0(K) over bar (0) mode. Using our unitarized amplitudes we evaluate the strong phase difference between the amplitudes for D-0 -> K-pi(+) and D-0 -> K+pi(-) and find it to be in complete agreement with the recent BES III result.
SN  - 1550-7998
UR  - http://arxiv.org/abs/1503.08176
UR  - https://doi.org/10.1103/PhysRevD.92.014032
DO  - 10.1103/PhysRevD.92.014032
LA  - English
N1  - WOS:000358605200001
ID  - Biswas_etal2015
ER  -