A magic connection between massive and massless diagrams

A useful connection between two-loop massive vacuum integrals and one-loop off-shell triangle diagrams with massless internal particles is established for arbitrary values of the space-time dimension n.Comment: 11 pages, plain latex, 1 figure (in latex); ps file available by anonymous ftp at ftp://vsfys1.fi.uib.no/anonymous/pub/bergen95-07.p

Systematics of exclusive diffraction dissociation modes in K± p interactions at 32 GeV/c

We present results of an investigation of diffraction dissociation in exclusive channels in K± p interactions at 32 GeV/c. Total cross sections are determined for K±→K±π+π-, K±2π+2π-, K0π±π±K±2π+π-, K±K+K-, K±p {Mathematical expression}, {Mathematical expression}p, and p→pπ+π-, p2π+2π-, pK+K-, ΛK+, ΛK+π+π- dissociation modes, ranging from a high of ≃ 300 μb to ∼ 3 μb. The dσ/dt′ differential cross sections of most of the systems studied exhibit structure, with breaks of slope at t′ ∼ 0.2 to 0.5 GeV2; some modes have a sharp forward spike with a slope exceeding 10 GeV-2. A systematic investigation of two-body dissociation modes K→A+B and p→A′+B′ shows that these cross sections decrease with increasing threshold mass MA+MB, that they are comparable for kaon and proton dissociations at similar diffractive excitation masses and are systematically suppressed by a factor 3-4 for dissociations requiring an {Mathematical expression} quark pair creation when compared to {Mathematical expression} pair creation indicating a breakdown of SU3 symmetry for the {Mathematical expression} sea. © 1981 Springer-Verlag.SCOPUS: ar.jinfo:eu-repo/semantics/publishe

Bovine chromosome 4 workshop: Consensus and comprehensive linkage maps

The report of the bovine chromosome 4 (BTA4) workshop is presented. Six laboratories contributed a total of 30 168 informative meioses from 62 loci. Twenty-two loci were typed by at least two independent laboratories and were used to construct a consensus linkage map of BTA4. The remaining 40 loci were subsequently incorporated into a comprehensive map. The sex-averaged consensus map covered 131 ·4 cM. The female map was 124 ·3 cM in length, while the male map was 134 ·3 cM. The comprehensive sex-averaged map spanned 141 ·6 cM. The length of the female and male comprehensive maps were 123 ·1 cM and 156 ·4 cM, respectively. Average genetic distance between loci was 6 and 2 ·3 cM for the consensus and comprehensive linkage maps, respectively