A model in which &I and Q2 resonance contributions add,coherently to a gaussian background is shown to reproduce the mass dependence of It+the JP = l+K*n and pK partial waves in K*p -. K TT TT p at 13 GeV/c. Through a fit to the data, the mass and total width for Q1 are found to be m= 1289k 3 rt (25) MeV, F = 150 f. 9(*70) MeV and for Q,, m = 1404 f 3(*10) MeV, I’ = 142 * 4(rt15) MeV, where est...

to investigate the electromagnetic interaction of molecules inside the nanotubes, first, the structure of nanotubes b16n16 was optimized with hybrid density functional theory (b3lyp) using the epr-ii basis set, then cu, cu+, cu++ were located in nanotube and we studied the total energy, band gap energy, electrical potential, changes of band gap energy in terms of total energy and dipole moment ...

The decay η ′ c → η c π π. Abstract It is pointed out that the decay of the recently observed charmonium η ′ c resonance, η ′ c → η c π π is simply related to the well studied decay ψ ′ → J/ψ π π and can thus be used for absolute normalization of other decay modes of the η ′ c. The total rate of the discussed decay should be approximately three to four times the corresponding rate for the ψ ′ r...

Variation of the relative yield of charged and neutral B mesons across the Υ(4S) resonance Abstract It is shown that the ratio of the production rates of the pairs B + B − and B 0 B 0 should experience a substantial and rapid variation with energy within the width of the Υ(4S) resonance, crossing the value of one near the center of the resonance. This behavior is due to an interference of the r...