Precision measurement of the cross section for e + e − → K + K − ( γ ) with the initial - state radiation method at B A
نویسندگان
چکیده
منابع مشابه
Restorative Effect of Vitamin E on some Immunological Parameters of Sub-Lethal γ-Irradiated BALB/c Mice
Elevated amount of the free radicals due to ionizing radiation causes deteriorating damage on immune system. Therefore, we made attempts to investigate the protective effect of vitamin E (vit-E), a biological antioxidant in BALB/c mice, so as to find an affordable prophylactic supplementation for individuals who are at risk. Several groups of mice were selected and exposed to sub-lethal g -irra...
متن کاملRestorative Effect of Vitamin E Supplementation on Hepatic Lipid Peroxidation and Lipid Profile Changes Induced by Sublethal γ-Radiation in BALB/c Mice
In order to find a prophylactic supplementation for individuals who are at risk of exposure to ionizing radiation, we attempted to evaluate the effect of Vitamin E (Vit-E), a biological free radical scavenger, on restoration of hepatic lipid peroxidation (LPO) and lipid profile (LP) changes induced by sublethal g- radiation in BALB/c mice. The concentrations of cholesterol and phospholipid were...
متن کاملINITIAL RAMIFICATION INDEX OF NONINVARIANT VALUATIONS ON FINITE DIMENSIONAL DIVISION ALGEBRAS
Let D be a division ring with centre K and dim, D< ? a valuation on K and v a noninvariant extension of ? to D. We define the initial ramfication index of v over ?, ?(v/ ?) .Let A be a valuation ring of o with maximal ideal m, and v , v ,…, v noninvariant extensions of w to D with valuation rings A , A ,…, A . If B= A , it is shown that the following conditions are equivalent: (i) B i...
متن کاملمحاسبه سطح مقطع پراکندگی برهمکنشهای γ e → e νν‾ و γγ→νν‾
We study processes in which neutrinos can be generated as a possible source for the neutrion emission form neutron stars. In the high energy limit and in the range em< E< Mw the cross sention for ye→evv is analytically calculated. We also calculate the cross section for yy→vv in the noncommutative space. The obtained results in comparison with the cross section for yy→vv and yy→ yvv in the...
متن کاملبه کاربردن تقریب دو حالته در تولید هیدروژن با فرود آمدن پروتون بر روی پوزیترونیوم
Although there is no experimental data available for antihydrogen formation following antiprotons impact on positroium atoms, as a charge transfer reaction, at incident energies which are suitable for antimatter high-precision spectroscopic studies, measurements were carried out for its charge-conjugate reaction i. e. hydrogen formation, by protons impact on positronium. In this study, a two-st...
متن کامل