Transverse momentum spectra of neutral pions in the range 0.7 < p T < 3.2 GeV/c have been measured at 2.3 η 3.0 by the WA98 experiment in p+C and p+Pb collisions at √ s NN = 17.3 GeV. Scaled by the number of nucleon-nucleon collisions (N coll) the π 0 yields in p+C and p+Pb at p T ≈ 2.0−2.5 GeV/c are higher than the respective yields in central Pb+Pb collisions with N part 300. This observation...

Aim of this work was to test the idea of J.-Y.Ollitrault about the parallel squeeze-out type of transversal flow in mid-rapidity region [1]. For this purpose we have performed a computer simulation of the expanding pion gas created in non-central Pb-Pb 158GeV/n collisions. A squeeze-out type of asymmetry parallel to impact parameter in az-imuthal distribution of pions is found and studied. The ...

Presence-only data present challenges for selecting thresholds to transform species distribution modeling results into binary outputs. In this article, we compare two recently published threshold selection methods (maxSSS and maxF pb) and examine the effectiveness of the threshold-based prevalence estimation approach. Six virtual species with varying prevalence were simulated within a real land...

Although lead isotope ratios have been used to identify lead ammunition (lead shotshell pellets and bullets) as a source of exposure for First Nations people of Canada, the actual source of lead exposure needs to be further clarified. Whole blood samples for First Nations people of Ontario, Canada, were collected from participants prior to the traditional spring harvest of water birds, as well ...

In this paper, we find the greatest value α and the least values β , p , q and r in (0,1/2) such that the inequalities L(αa+ (1−α)b,αb+ (1−α)a) < P(a,b) < L(βa + (1− β)b,βb + (1− β)a) , H(pa + (1− p)b, pb + (1− p)a) > G(a,b) , H(qa+ (1− q)b,qb +(1− q)a) > L(a,b) , and G(ra+(1− r)b,rb+(1− r)a) > L(a,b) hold for all a,b > 0 with a = b . Here, H(a,b) , G(a,b) , L(a,b) and P(a,b) denote the harmoni...

This is a review of theoretical attempts to describe production of heavy quark bound states in nucleus-nucleus collisions, in particular, the relative suppression of J/ψ and ψ production observed in these reactions. The review begins with a survey of experimental data for proton-induced reactions and their theoretical interpretation. The evidence for additional suppression in nucleus-nucleus co...

Recent data on the genuine three-body Bose-Einstein correlations are consistent with fully coherent pion production in S-Pb collisions but with uncoherent pion production in central Pb-Pb collisions. These results, unexpected from conventional approaches, are naturally explained by the percolation of colour strings produced in the collisions and subsequent incoherent fragmentation of the formed...

The production cross section of a W boson in association with two b jets is measured using a sample of proton–proton collisions at √ s = 8 TeV collected by the CMS experiment at the CERN LHC. The data sample corresponds to an integrated luminosity of 19.8 fb −1. The W bosons are reconstructed via their leptonic decays, W → ν, where = μ or e. The fiducial region studied contains exactly one lept...

Recent measurements performed in high-multiplicity proton-proton (pp) and proton-lead (p-Pb) collisions have shown features that are reminiscent of those observed in lead-lead (Pb-Pb) collisions. These observations warrant a comprehensive measurement of the production of identified particles. We report on the production of K0 S , Λ, Λ, Ξ ± and Ω± at mid-rapidity measured as a function of multip...

OBJECTIVES To test a simple procedure for preparing samples for measurement of lead in blood plasma (P-Pb) and whole blood (B-Pb) by inductively coupled plasma mass spectrometry (ICP-MS), to measure P-Pb and B-Pb in lead workers and controls, and to evaluate any differences in the relation between B-Pb and P-Pb between people. METHODS P-Pb and B-Pb were measured by ICP-MS in 43 male lead smel...