Can Low-Lying Roper States be Explained as Antidecuplet Members?

Can low-lying Roper states be explained as antidecuplet members?

It is shown that the anomalously low-lying Roper states cannot be assigned as members of the 5Q antidecuplet or 5Q octet multiplets as suggested by Jaffe and Wilczek. A possible experimental discovery of the antidecuplet state Θ + (1540) [1] certainly disturbs a quiet life of hadron physics. Obviously there is a need not only to explain Θ + (1540) in a quark language (see, e.g. [2–4]), but also...

Roper v. Simmons: can juvenile offenders be executed?

In Roper v. Simmons, the U.S. Supreme Court was once again asked to determine if the execution of a juvenile, aged 16 or 17 years at the time of the offense, represents cruel and unusual punishment. In a five-to-four decision, the U.S. Supreme Court affirmed the decision of the Supreme Court of Missouri to overturn the death penalty of Christopher Simmons and held that the execution of juvenile...

Differences in Coronary Mortalit Can Be Explained

Background. For decades, the coronary heart disease (CHD) mortality rate has been four or more times higher in Finland than in France despite comparable intakes of dietary cholesterol and saturated fat. A potential answer to this paradox is provided by this study of 40 countries and the analyses of other nutrients in the diets besides cholesterol and saturated fat. Medhds and Resuls. CHD death ...

Low-lying negative-ion states of calcium.

Low-lying electronic states of cyclopentadienone.

We report a combined experimental and theoretical study of the low-lying electronic states of cyclopentadienone (C5H4O). The cyclopentadienone anion (C5H4O(-)) was generated in the gas phase via reaction of atomic oxygen radical anions (O(-)) with cyclopentanone (C5H8O). Photoelectron imaging was used to gain access to the first three electronic states of C5H4O, including the X (1)A1 ground sta...