Search results for "Complete Agreement"
showing 2 items of 2 documents
Prediction of the carbon-13 NMR chemical shifts of polysubstituted benzenes with homogeneous substituents
1991
A new incremental scheme for the calculation of the 13C NMR chemical shifts in polysubstituted benzenes with homogeneous substituents was derived and applied to spectral prediction for C6XnH6−n where XCH3, C2H5, i-C3H7, CF3, F, Cl, Br, COOH. Owing to the use of only two-particle increments the procedure is simple enough to be carried out on hand calculators, and gives complete agreement with experimental values within a few tenths of a ppm in all cases compared (76 compounds). The 13C NMR chemical shift was predicted for hexaethylbenzene with a good fit to the experiment value, and also for 20 unmeasured compounds. The present scheme can be used as an algorithm in structure-searching progra…
Updated Standard Model Prediction for ε′/ε
2018
Abstract A recent lattice evaluation of e ′ / e , finding a 2.1 σ deviation from the experimental value, has revived the old debate about a possible e ′ / e anomaly. The unfounded claims of a too low Standard Model prediction are based on incorrect estimates that neglect the long-distance re-scattering of the final pions in K → 2 π . In view of the current situation, we have recently updated the Standard Model calculation, including all known short- and long-distance contributions. Our result, Re ( e ′ / e ) = ( 15 ± 7 ) ⋅ 10 − 4 [H. Gisbert and A. Pich, “Direct CP violation in K 0 → π π : Standard Model Status”, Rept. Prog. Phys. 81 (2018) no. 7, 076201 arXiv:1712.06147 [hep-ph] .], is in …