منابع مشابه
Mass spectrum of pentaquarks
We discuss the properties of the pentaquark in a collective stringlike model with a nonplanar configuration of the four quarks and the antiquark. In an application to the mass spectrum of exotic Θ baryons, we find that the ground state pentaquark has angular momentum and parity J = 1/2− and a small magnetic moment of 0.382 μN . The decay width is suppressed by the spatial overlap with the decay...
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We report on observations of the X-ray pulsar 4U 1626−67 by the LECS instrument on-board BeppoSAX. We confirm the recent ASCA discovery of excess emission near 1 keV (Angelini et al. 1995). The pulse period of 7.66794 ± 0.00004 s indicates that the source continues to spin-down. The phase averaged spectrum iswell fit by an absorbed power-law of photon index0.61±0.02 and ablackbodyof temperature...
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We present 3−79 keV NuSTAR observations of the neutron star low-mass X-ray binary 4U 1636−53 in the soft, transitional and hard state. The spectra display a broad emission line at 5−10 keV. We applied several models to fit this line: A gaussian line, a relativistically broadened emission line model, kyrline, and two models including relativistically smeared and ionized reflection off the accret...
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We utilized the crossed molecular beams method to synthesize the butadiynyl radical, C4H(X ∑ +), via the reaction of dicarbon molecules with acetylene, under single collision conditions. Time-of-flight spectra of the radical were recorded at the center-of-mass angle (31◦) of the parent ion (m/z= 49; C4H) and of the fragments at m/z= 48 (C4), m/z= 37 (C3H), and m/z= 36 (C3) This yields relative ...
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A self-consistent approach is applied for the calculations within the two-time temperature Green functions formalism in the random phase approximation. The effective mass of 4He atom is computed as m∗ = 1.58m. The excitation spectrum is found to be in a satisfactory agreement with the experiment. The sound velocity is calculated as 230 m/s. The temperature of the Bose-condensation with the effe...
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ژورنال
عنوان ژورنال: Australian Journal of Chemistry
سال: 1970
ISSN: 0004-9425
DOI: 10.1071/ch9701057