1,129 research outputs found
Light anti-nuclei production in pp collisions at =7 and 14 TeV
A dynamically constrained coalescence model based on the phase space
quantization and classical limit method was proposed to investigate the
production of light nuclei (anti-nuclei) in non-single diffractive (NSD) pp
collisions at =7 and 14 TeV. This calculation was based on the final
hadronic state in the PYTHIA and PACIAE model simulations, the event sample
consisted of 1.2 events in both simulations. The PACIAE model
calculated yield of 6.247 in NSD pp collisions at
=7 TeV is well comparing with the ALICE rough datum of 5.456. It indicated the reliability of proposed method in some extent. The
yield, transverse momentum distribution, and rapidity distribution of the , , and in NSD pp collisions at
=7 and 14 TeV were predicted by PACIAE and PYTHIA model simulations.
The yield resulted from PACIAE model simulations is larger than the one from
PYTHIA model. This might reflect the role played by the parton and hadron
rescatterings.Comment: 5 pages, 2 figure
trans-Bis(2-acetÂamido-5-methylÂbenzoato-κO 1)tetraÂaquaÂzinc
In the title compound, [Zn(C10H10NO3)2(H2O)4], the ZnII atom lies on a crystallographic inversion center and is six-coordinated by two monodentate trans-related 2-(N-acetylÂamino)-5-methylÂbenzoato ligands and four water molÂecules, giving a slightly distorted octaÂhedral geometry. There are two intraÂmolecular hydrogen bonds [amine N—H⋯OcarboxÂyl and water O—H⋯OcarboxÂyl], while extensive interÂmolecular water O—H⋯O hydrogen-bonding interÂactions extend the complex units into a two-dimensional network structure along (100)
Systematic study of elliptic flow parameter in the relativistic nuclear collisions at RHIC and LHC energies
We employed the new issue of a parton and hadron cascade model PACIAE 2.1 to
systematically investigate the charged particle elliptic flow parameter
in the relativistic nuclear collisions at RHIC and LHC energies. With randomly
sampling the transverse momentum and components of the particles
generated in string fragmentation on the circumference of an ellipse instead of
circle originally, the calculated charged particle and
fairly reproduce the corresponding experimental data in the Au+Au/Pb+Pb
collisions at =0.2/2.76 TeV. In addition, the charged particle
and in the p+p collisions at =7 TeV as well as
in the p+Au/p+Pb collisions at =0.2/5.02 TeV are predicted.Comment: 7 pages, 5 figure
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