l - th / 9 70 60 50 v 1 1 9 Ju n 19 97 Can only flavor - nonsinglet H dibaryons be stable against strong decays ?

Can only flavor-nonsinglet H dibaryons be stable against strong decays?

Using the QCD sum rule approach, we show that the flavor-nonsinglet H dibaryon states with J = 1+, J = 0+, I=1 (27plet) are nearly degenerate with the J = 0+, I=0 singlet H0 dibaryon, which has been predicted to be stable against strong decay, but has not been observed. Our calculation, which does not require an instanton correction, suggests that the H0 is slightly heavier than these flavor-no...

ar X iv : n uc l - th / 9 80 60 97 v 1 2 9 Ju n 19 98 3 P 2 - 3 F 2 pairing in neutron matter with modern nucleon - nucleon potentials

ar X iv : n uc l - th / 9 70 60 42 v 1 1 7 Ju n 19 97 Electromagnetic Form Factors of the Nucleon

We reanalyze the world data on the electromagnetic form factors of the nucleon. The calculations are performed in the framework of an algebraic model of the nucleon combined with vector meson dominance.

ar X iv : h ep - l at / 9 70 60 19 v 1 2 6 Ju n 19 97 BUTP – 97 / 16 Properties of Renormalization Group Transformations 1

We describe some properties of Renormalization Group transformations. Especially we show why some of the RG transformations have redundant eigenoperators with eigenvalues that cannot be determined by simple dimensional analysis and give the corresponding formulae. Work supported in part by Schweizerischer Nationalfonds

ar X iv : n uc l - th / 9 70 60 35 v 1 1 6 Ju n 19 97 Is there a Pronounced Giant Dipole Resonance in 4 He ?

A four–nucleon calculation of the total 4He photodisintegration cross section is performed. The full final–state interaction is taken into account for the first time. This is achieved via the method of the Lorentz integral transform. Semi–realistic NN interactions are employed. Different from the known partial two–body 4He(γ, n)3He and 4He(γ, p)3H cross sections our total cross section exhibits...