27 research outputs found
Inelastic Rescattering and CP Asymmetries in D -> pi+ pi-, pi0 pi0
We study the direct CP violation induced by inelastic final state interaction
(FSI) rescattering in modes, and find that the resultant CP
asymmetry is about which is larger than in the K-system.
Our estimation is based on well-established theories and experiment measured
data, so there are almost no free parameters except the weak phase
in the CKM matrix.Comment: 9 page
Persulfate oxidation: A novel characterization method for the prediction of PAH bioavailability in soils and sediments
Rapid persulfate oxidation predicts PAH bioavailability in soils and sediments
Persulfate oxidation was validated as a method to predict polycyclic aromatic hydrocarbon (PAH) bioavailability in soils and sediments. It was demonstrated for 14 field contaminated soils and sediments that residual PAH concentrations after a short (3 h) persulfate oxidation correspond well to residual PAH concentrations after 21 days of biodegradation. Persulfate oxidation of samples that had first been subjected to biodegradation yielded only limited additional PAH oxidation. This implies that oxidation and biodegradation removed approximately the same PAH fraction. Persulfate oxidation thus provides a good and rapid method for the prediction of PAH bioavailability. Thermogravimetric analysis of oxidized and untreated samples showed that persulfate oxidation primarily affected expanded organic matter. The results indicate that this expanded organic matter contained mainly readily bioavailable PAHs