The hadronic particle production data from relativistic nuclear Pb–Pb 158 A GeV collisions are successfully described within the chemical non-equilibrium model, provided that the analysis does not include Ω and Ω abundances. We show that there is a subtle influence of the Coulomb potential on strange quarks in quark matter which is also seen in our data analysis, and this Coulomb effect confirm...

Trigger capability for dimuon events is discussed. The acceptance and low momentum reach are calculated. The rates of muon trigger caused by prompt muons, hadron decays and hadronic punchthrough are examined. A trigger strategy for Pb-Pb collision is proposed to ensure high efficiency for the signal and acceptable background rates. Possible modifications for lighter ions are briefly discussed. ...

The most abundant components of primitive meteorites (chondrites) are millimeter-sized glassy spherical chondrules formed by transient melting events in the solar protoplanetary disk. Using Pb-Pb dates of 22 individual chondrules, we show that primary production of chondrules in the early solar system was restricted to the first million years after the formation of the Sun and that these existi...

A wide research program provided by heavy ion collisions is ongoing at the Large Hadron Col-lider with the aim of studying the properties of QCD matter at extreme temperatures and densities. The large acceptance and high granularity of the ATLAS Detector is well suited to perform detailed analyses on bulk phenomena, jets and leptonic probes. Measurements of these observables provided by the 9 µ...

Wei Li,1 Li Huang,1,* Raj Ganesh S. Pala,2,3 Guang-Hong Lu,4,5 Feng Liu,6 James W. Evans,7,8 and Yong Han7,8,† 1Department of Physics, Southern University of Science and Technology, Shenzhen, Guangdong 518055, People’s Republic of China 2Department of Chemical Engineering, Indian Institute of Technology Kanpur, UP, 208016, India 3Material Science Programme, Indian Institute of Technology Kanpur...

The preserved record of decay of now-extinct 129I into 129Xe forms the basis of the I-Xe chronometer. Comparison of the high precision I-Xe and Pb-Pb ages of chondrules and pure mineral phases separated from eight meteorites suggests the 17.5 ÷ 14.6 Ma range for the 129I half-life, assuming that the 235U and 238U half-lives are correct. The mean value of 16 Ma indicates that the 15.7 Ma half-li...

Since the advent of topological insulators hosting Dirac surface states, efforts have been made to gap these states in a controllable way. A new route to accomplish this was opened up by the discovery of topological crystalline insulators where the topological states are protected by crystal symmetries and thus prone to gap formation by structural changes of the lattice. Here we show a temperat...

This study investigated the impacts of two best management practices (BMPs) recommended by US Environmental Protection Agency on Pb weathering and leachability in shooting range soils. The two BMPs included replacing soil berm with sand berm and periodically removing bullets or shot from a berm. A column experiment corresponding to the first BMP was conducted by mixing the bullets with sand/soi...

We compare chemical and thermal analysis of the SPS Pb–Pb results at 158A GeV, and present a first chemical analysis of RHIC results. We show how a combined analysis of several strange hadron resonances can be used in a study of freeze-out dynamics.