The transverse single-spin asymmetry for charged hadrons ({pi}{sup {+-}}, K{sup {+-}}, p, p-bar) produced in proton-nucleus collisions was measured for c.m. production angles in the range 40{sup ...o}-79{sup o}. The measurements were performed with the FODS-2 setup by using a 40-GeV polarized proton beam originating from the accelerator of the Institute for High Energy Physics (Protvino) and hitting carbon and copper nuclear targets. The data in question were obtained in the polarized-proton-fragmentation region (0.0 < x{sub F} < 0.7, 0.6 < pT < 2.5 GeV/c). In agreement with data obtained at other energies, the single-spin asymmetry for {pi}{sup {+-}} mesons is significant at high x{sub F}. For the first time, a sizable analyzing power, which changes sign at x{sub F} = 0.43, is observed for protons. The dependence of the analyzing power on the target-nucleus mass is insignificant.
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DOBA, EMUNI, FIS, FZAB, GEOZS, GIS, IJS, IMTLJ, IZUM, KILJ, KISLJ, MFDPS, NLZOH, NUK, OILJ, PILJ, PNG, SAZU, SBCE, SBJE, SBMB, SIK, UILJ, UKNU, UL, UM, UPUK, VKSCE, ZAGLJ
The transverse single-spin asymmetry was measured for charged hadrons ({pi}{sup {+-}}, K{sup {+-}}, p, p-bar) produced in proton-nucleus collisions. The measurements were performed at the FODS-2 ...spectrometer by using a polarized proton beam that was accelerated to an energy of 40 GeV at the accelerator of the Institute for High Energy Physics (IHEP, Protvino) and which was made to hit carbon and copper nuclear targets. The data in question were obtained in the range of c.m. angles between 73{sup o} and 94{sup o} near the central region (-0.01 < x{sub F} < 0.27, 0.7 < p{sub T} < 3.6 GeV/c). The single-spin asymmetry for {pi}{sup +} and K{sup +} mesons is significant at high values of p{sub T} and moderately small positive values of x{sub F}. The analyzing power for other hadrons ({pi}{sup -}, K{sup -}, p, p-bar) is compatible with zero in the p{sub T} range studied here. The dependence of the analyzing power on the mass number of the target nucleus is insignificant.
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DOBA, EMUNI, FIS, FZAB, GEOZS, GIS, IJS, IMTLJ, IZUM, KILJ, KISLJ, MFDPS, NLZOH, NUK, OILJ, PILJ, PNG, SAZU, SBCE, SBJE, SBMB, SIK, UILJ, UKNU, UL, UM, UPUK, VKSCE, ZAGLJ
The results of health assessment of the population living and working in the protective actions zone by the evidence obtained during general and special meadical examinations are summarized.
The production of noncoplanar hadron pairs in proton-nucleus interactions is studied experimentally for the case where the transverse momenta of product particles are in excess of 1 GeV/c. The values ...obtained for the exponent in the A dependence of the cross section for the production of noncoplanar hadron pairs are substantially greater than those for coplanar pairs. This nuclear-mass-number dependence for the production of hadron pairs can be explained by the contribution of multiparton interactions in proton-nucleus collisions.
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The article deals with results of specification and functioning of a register of health for workers exposed to extremely dangerous toxic chemicals. The authors demonstrated patterns of diseases ...development in workers according to length of work with toxic chemicals and to work conditions. The identified cause-effect relationships of the diseases development necessitate health registers to minimize negative consequences in work conditions, for early diagnosis and occupational diseases prevention.
Using special medical examination results and specified criteria of objective evaluation, the authors summarized results of studies concerning health state of population dwelling in area possibly ...influenced by rocket space activities factors.
Some regularities are studied for the ion-exchange extraction of the gold(I) thiocyanate complexes by ion-exchangers of various physical and chemical structure. It is shown that gold is present in ...the resin phase as a Au(SCN)
2
-
species and is held by the positively charged sorbent functional groups. The conclusion is drawn that high ion-exchanger affinity for this ion is caused by the high polarizability, linear structure, and small charge of the latter.
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EMUNI, FIS, FZAB, GEOZS, GIS, IJS, IMTLJ, KILJ, KISLJ, MFDPS, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, SBMB, UKNU, UL, UM, UPUK, VKSCE, ZAGLJ
49.
Fods Hadron Calorimeters A Yu Kalinin; Korablev, A V; Krinitsyn, A N ...
arXiv (Cornell University),
12/2009
Paper, Journal Article
Open access
There is described the design of the FODS hadron calorimeters, the procedure of the calibration and the results of the calorimeter study with electron and pion beams.
Conditions for formation of angular and energy distributions of light particles emitted in ternary fission of 233, 235U, 239Pu, and 245Cm nuclei induced by cold polarized neutrons have been studied ...in the course of investigating T-odd asymmetry in emission of these particles with respect to the plane formed by the fission axis and the polarization axis of the fissioning nucleus. The results obtained lead to the conclusion that in ternary fission charged particles are emitted by the fissioning nuclear system rotating around the polarization direction.
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EMUNI, FIS, FZAB, GEOZS, GIS, IJS, IMTLJ, KILJ, KISLJ, MFDPS, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, SBMB, UKNU, UL, UM, UPUK, VKSCE, ZAGLJ
