A pr 1 99 8 The pd → 3 H Λ K + reaction cross section

v 1 1 A pr 1 99 8 νd → μ − ∆ + + n Reaction and Axial Vector N − ∆ Coupling

The reaction νd → µ − ∆ ++ n is studied in the region of low q 2 to investigate the effect of deuteron structure and width of the ∆ resonance on the differential cross section. The results are used to extract the axial vector N − ∆ coupling C A 5 from the experimental data on this reaction. The possibility to determine this coupling from electroweak interaction experiments with high intensity e...

ar X iv : h ep - p h / 04 11 15 5 v 1 1 1 N ov 2 00 4 Testing the nature of the Λ ( 1520 ) resonance through photoproduction February 2 , 2008

Recent studies within the framework of chiral unitary theory produce the Λ(1520) resonance, among several others, as a dynamically generated resonance from the interaction of the baryon decuplet and the meson octet. The Λ(1520) qualifies as a quasibound state of πΣ(1385) and this has repercussion in some observable quantities. In the present work we show that the γp → K+K−p reaction has a sizea...

X iv : h ep - p h / 99 12 32 7 v 1 1 4 D ec 1 99 9 Factorization scheme dependence of the NLO inclusive jet cross section

We study the factorization scheme dependence of the next-to-leading order inclusive one jet cross section dσ/dET . The scheme is varied parametrically along the direction that transforms the MS scheme to the DIS scheme: we introduce a parameter λ such that λ = 0 is MS and λ = 1 is DIS. The factorization scale μ is also varied. We observe a change of ±9% in the cross section for ET = 50 GeV when...

ar X iv : a st ro - p h / 99 02 29 8 v 2 1 3 A pr 1 99 9 New limits on Ω Λ and Ω M from old galaxies at high redshift

F eb 1 99 8 Strangeness production in proton - proton collisions ∗ †

The cross sections of the reaction pp → N KY for K + or K 0 mesons and Λ or Σ hyperons are calculated within the boson exchange model including pion and kaon exchange diagrams. We analyze the dependence of the results on the accuracy of the input πN amplitude. By fixing the πN N coupling constant and the cutoff parameter Λ π at the πN N vertex we calculate the contribution from the kaon exchang...