Indication of a deeply bound and compact K- pp state formed in the pp- -> pLambdaK+ reaction at 2.85 GeV.

We have analyzed data of the DISTO experiment on the exclusive pp --> pLambdaK+ reaction at 2.85 GeV to search for a strongly bound compact K- pp(approximately = X) state to be formed in the pp --> K+ + X reaction. The observed spectra of the K+ missing mass and the pLambda invariant-mass with high transverse momenta of p and K+ revealed a broad distinct peak of 26-sigma confidence with a mass M(X)=2267+/-3(stat)+/-5(syst) MeV/c2 and a width Gamma(X)=118+/-8(stat)+/-10(syst) MeV. The enormously large cross section indicates formation of a compact K- pp with a large binding energy of B(K)=103 MeV, which can be a possible gateway toward cold and dense kaonic nuclear matter.

[Effect of contraceptive drugs on the guinea pig teat]. / Die Wirkung antikonzeptioneller Medikamente auf die Meerschweinchenzitze.

PIP: The effect of the oral contraceptives Noracyclin 22, Anovlar 21, Eugynon, Provera, and progesterone on longitudinal growth, width (acanthosis), pigmentation, and sebaceous glands of guinea pig teats were recorded. Treatment for 21 days consisted of 1/4 or 1/40 of a tablet orally; controls received .05 mcg hormoestrol (p,p-dioxydiphenylhexane), and another untreated control group was included. All drugs elongated guinea pig teats, measured by silhouette, and caused spreading (acanthosis). All of those containing estrogen induced hyperpigmentation of the aureolae, hormoestrol being the most potent. Hypertrophy of sebaceous glands developed after hormoestrol, Noracyclin, Eugynon in 1/40 tablet dose only, Provera and progesterone, but not Eugynon 1/4 tablet or Anovlar in either dose. The results on pigmentation were deemed clinically interesting with repsect to cholasma.^ieng

Barkas effect for antiproton stopping in H2.

We report the stopping power of molecular hydrogen for antiprotons of kinetic energy above the maximum (approximately 100 keV) with the purpose of comparing with the proton one. Our result is consistent with a positive difference in antiproton-proton stopping powers above approximately 250 keV and with a maximum difference between the stopping powers of 21%+/-3% at around 600 keV.

Rho(0) meson production in the pp-->pppi(+)pi(-) reaction at 3.67 GeV/c.

Total and differential cross sections for the exclusive reaction pp-->pp rho observed via the pi(+)pi(-) decay channel have been measured at p(beam)=3.67 GeV/c. The observed total meson production cross section is determined to be (23.4+/-0.8+/-8) mu b and is significantly lower than typical cross sections used in model calculations for heavy-ion collisions. The differential cross sections measured indicate a strong anisotropy (approximately cos(theta(CM)(rho)) in the rho(0) meson production.