Spin-Parity Analysis of the Centrally produced KsKs system at 800 GeV

Results are presented of the spin-parity analysis on a sample of centrally produced mesons in the reaction (p p -> p_{slow} K_s K_s p_{fast}) with 800 GeV protons on liquid hydrogen. The spin-parity analysis in the mass region between threshold and 1.58 GeV/c^2 shows that the (K_s K_s) system is produced mainly in S-wave. The f_0(1500) is clearly observed in this region. Above 1.58 GeV/c^2 two solutions are possible, one with mainly S-wave and another with mainly D-wave. This ambiguity prevents a unique determination of the spin of the f_J(1710) meson.Comment: 6 pages, including 6 figures. LaTex, uses 'espcrc2.sty'. To appear in LEAP'96 proceeding

Recent results from Fermilab E690

Partial wave analysis results of centrally produced mesons in the reaction pp {yields} P{sub slow}(X)P{sub fast}, with 800 GeV/c protons incident on a liquid hydrogen target are presented. In the reactions considered in this paper the (X) system decays into: a) K{sup 0}{sub s}K{sup {+-}}{pi}{sup {-+}}, b) K{sub s}K{sub s}, and c) {pi}{sup +}{pi}{sup -}

Haplotypic association of two new HLA class I alleles: Cw*15052 and B*0706: evolutionary relationships of HLA-Cw*15 alleles

A novel HLA-Cw*15, B7 haplotype has been found in Caucasians. Molecular cloning studies demonstrate that this haplotype is constituted by the new alleles Cw*15052 and B*0706, which seem to be intermediate steps in the diversification of their respective allelic families. A pathway for the evolution of Cw*15 alleles is proposed

Molecular characterization of a novel, serologically detectable, HLA-C allele: Cw∗1602

Cw∗1602, a novel HLA-C allele belonging to the newly assigned Cw∗16 group, has been cloned and sequenced from a Spanish Caucasoid cell expressing a “Cw6.2” phenotype. Some of the polymorphic substitutions of the new allele, and linkage disequilibrium to B51, had been predicted on the basis of previously published studies. The primary structure of Cw∗1602 is in agreement with its serologic reactivity and, in comparison with that of Cw∗1601, underlines the dimorphism of HLA-C molecules at residues 77 and 80 of the α1-domain α helix

The novel HLA-Cw*1802 allele is associated with B*5703 in the Bubi population from Equatorial Guinea

The HLA-Cw*1801 specificity, a Cw7/Cw4 hybrid allele, has recently been described in association with B*8101 (formerly B“DT”). In this study, the new Cw*1802 variant, differing from Cw*1801 at exon 5. is found associated with B*5703 in Bubi individuals from Equatorial Guinea. Confirmatory complete coding regions of B*5703 and B*3910 are also reported