{omega} meson production in pp collisions with a polarized beam

Model independent formulas are derived for the beam analyzing power Ay and beam to meson spin transfers in ppâ ppI, taking into consideration all six threshold partial wave amplitudes f1,...,f6 covering the Ss, Sp, and Ps channels. It is shown that the lowest three partial wave amplitudes f1,f2,f3 can be determined empirically without any discrete ambiguities. Partial information with regard to the amplitudes f4,f5,f6 covering the Ps channel may be extracted, if the measurements are carried through at the double differential level. © 2008 The American Physical Society

Omega meson production in pp collisions with a polarized beam

Model independent formulae are derived for the beam analyzing power $A_y$ and beam to meson spin transfers in $pp \to pp \omega$ taking into consideration all the six threshold partial wave amplitudes covering the $Ss, Sp$ and $Ps$ channels. Attention is also focussed on the empirical determination of the lowest three partial wave amplitudes $f_1, f_2, f_3$ without any discrete ambiguities.Comment: 5 pages, Latex 2

Empirical Determination of Threshold Partial Wave Amplitudes in pp→ppωp p \to p p \omega

Using the model independent irreducible tensor approach to $\omega$ production in $pp$ collisions, we show theoretically that, it is advantageous to measure experimentally the polarization of $\omega$, in addition to the proposed experimental study employing a polarized beam and a polarized target.Comment: 6 pages, 1 Table, Latex-2

Omega Production in pp Collisions

A model-independent irreducible tensor formalism which has been developed earlier to analyze measurements of $\vec{p}\vec{p}\to pp \pi^\circ$, is extended to present a theoretical discussion of $\vec{p}\vec{p}\to pp \omega$ and the polarization of $\omega$ in $pp\to pp \vec{\omega}$. The recent measurement of unpolarized differential cross section for $pp\to pp \omega$ is analyzed using this theoretical formalism.Comment: 5 pages (double column), no figures, uses revtex

Empirical determination of threshold partial wave amplitudes for pp ppÏ

Using the model-independent irreducible tensor approach to Ï production in pp collisions, we show theoretically that it is advantageous to measure experimentally the polarization of Ï, in addition to the proposed experimental study employing a polarized beam on a polarized target. © World Scientific Publishing Company

Crystal growth and characterization of new nonlinear optical chalcone derivative: 1-(4-Methoxyphenyl)-3-(3, 4-dimethoxyphenyl)-2-propen-1-one

Synthesis and single-crystal growth of a new organic nonlinear optical (NLO) material of chalcone derivative, 1-(4-methoxyphenyl)-3-(3, 4-dimethoxyphenyl)-2-propen-1-one (DMMC) by slow evaporation technique is reported. Good-quality single crystals of size 28mm×7mm×3mm are grown for a period of 20 days and characterized by FT-IR and NMR studies. The grown crystal has been subjected to single-crystal X-ray diffraction technique and cell parameters of the crystal were determined. The title compound crystallizes in monoclinic system with a noncentrosymmetric space group P21, with unit cell parameters a=6.4090(4)Å, b=10.4950(10)Å, c=11.4820(12)Å, β=98.336(7)°, Z=2 and V=764.15(12)Å3. The thermal stability of the crystal was determined from TGA/DTA curve. The grown crystals were characterized for their optical transmission and mechanical hardness. The second harmonic generation (SHG) efficiency of the crystals was obtained by classical powder technique using Nd:YAG laser and it is found to be 15 times that of urea. The laser damage threshold value has been determined using Q-switched Nd:YAG laser