15 research outputs found
Monte-Carlo Generator Photon Jets for the process e+e- -> gamma gamma
Monte-Carlo generator with photon jets radiation in collinear regions for the
process \eegg is described in detail. Radiative corrections in the first order
of are treated exactly. Large leading logarithmic corrections coming
from collinear regions are taken into account in all orders of by
applying the Structure Function approach. Theoretical precision of the cross
section with radiative corrections is estimated to be 0.2%. This process is
considered as an additional tool to measure luminosity in forthcoming
experiments with the CMD-3 detector at the collider VEPP-2000.Comment: 6 pages, 5 figure
Recent result from CMD-3 detector
Since December 2010, the CMD-3 detector has collected data at the electron-positron collider VEPP- 2000. The sample of the accumulated data corresponds to about 60 pb−1 of integrated luminosity in the c.m. energy from 0.32 up to 2 GeV. Preliminary results of the analysis of various processes e+e− annihilation to hadrons are presented. It is shown the processes with multihadron events have several intermediate states which must be taken into account to correctly describe the angular and invariant mass distributions as well as cross section dependence versus energy
Synthesis and Characterization of a New Binuclear Copper(II) Complex with an Oxygen Bridge and a B−N Bonded Ligand
[[abstract]]The first ferromagnetic (2J = 1.60 cm-1) binuclear copper(II) complex, [Cu(LBPh3)]2, which contains the self-assembly O-bridged and B−N bonded ligand LBPh3 (=N-(salicylidene)-N‘-(1-BPh3)-imidazol-2-ylmethylene)-1,3-propanediamine), has been prepared. The X-ray structure of [Cu(LBPh3]2 reveals that in an unusual formation of B−N bonding the boron atom bonds to the nitrogen atom of the imidazolate moiety of the ligand. The copper(II) atoms are bridged by self-assembly of chelated oxygen atoms.[[notice]]補æ£å®Œ