Production and decay of the charged D* [D] meson in e_1hn+e_1hn- [ee] annihilation at 10 GeV centre of mass energy PDF Download
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![Production and decay of the charged D* [D] meson in e_1hn+e_1hn- [ee] annihilation at 10 GeV centre of mass energy PDF](https://books.google.com/books/content/images/frontcover/9TExygAACAAJ?fife=w150-h200)
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![Production and decay of the charged D* [D] meson in e_1hn+e_1hn- [ee] annihilation at 10 GeV centre of mass energy PDF](https://books.google.com/books/content/images/frontcover/9TExygAACAAJ?fife=w80-h100)
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![Production and Decay of the Charged D[superscript *] Meson in E+e- Annihilation at 10 GeV Centre-of-mass Energy PDF](https://books.google.com/books/content/images/frontcover/CQP5GgAACAAJ?fife=w80-h100)
Author: ARGUS Collaboration
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Languages : en
Pages : 8
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Author: Petros-Afentoulis Rapidis
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Category : Annihilation reactions
Languages : en
Pages : 228
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![Production and decay of the F-meson in e_1hn+e_1hn- [ee] annihilation at 10 GeV centre-of-mass energy PDF](https://books.google.com/books/content/images/frontcover/EGgPYAAACAAJ?fife=w80-h100)
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Languages : en
Pages : 0
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![D Meson Production in Ee− Annihilation. [3. 7 to 7. 0 GeV, Total Cross Section, Branching Ratio]. PDF](https://books.google.com/books/content/images/frontcover/jxmsAQAACAAJ?fife=w80-h100)
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The production of D mesons in ee− annihilation for the center-of-mass energy range 3.7 to 7.0 GeV was studied with the MARK I magnetic detector at SPEAR. A resonance was observed in the total cross section for hadron production in ee− annihilation at an energy just above the threshold for charm production. This resonance, which is named psi'', has a mass of 3772 +- 6 MeV/c2, a total width of 28 +- 5 MeV/c2, a partial width to electron pairs of 345 +- 85 eV/c2, and decays almost exclusively into D anti D pairs. The psi'' provides a rich source of background-free and kinematically well defined D mesons for study. From produced in the decay of the psi'' the masses of the D° and D/sup +/ mesons were determined to be 1863.3 +- 0.9 MeV/c2 and 1868.3 +- 0.9 MeV/c2 respectively. Also the branching fractions for D° decay to K−.pi./sup +/, anti K°.pi./sup +/.pi.− and K−.pi./sup +/.pi.−.pi./sup +/ were determined to be (2.2 +- 0.6)%, (4.0 +- 1.3)%, and (3.2 +- 1.1)% and the branching fractions for D/sup +/ decay to anti K°.pi./sup +/ and K−.pi./sup +/.pi./sup +/ to be (1.5 +- 0.60)% and (3.9 +- 1.0)%. The average number of kaons per D decay was found to be 0.52 +- 0.14 K°'s and 0.42 +- 0.12 K/sup +/'s. The rate for inclusive production of D mesons at center-of-mass energies above the psi'' was measured; it is found that it can account for most, if not all, of the observed increase in the total hadronic cross-section for center-of-mass energies above 4 GeV. The inclusive momentum and energy spectra for D's were measured at the highest available center-of-mass energy (7 GeV). The energy spectra are rapidly decreasing functions of energy with a slope similar to the slope of the charged pion spectrum at the same center-of-mass energy. This behavior suggests that the fragmentation function of the charmed quark into charmed mesons is a decreasing function of the scaling variable z = 2E/sub D//E/sub CM/. 81 references.
![Evidence for F* [F] meson production in e_1hn+e_1hn- [ee] annihilation at 10 GeV center-of-mass energy PDF](https://books.google.com/books/content/images/frontcover/0hfPXwAACAAJ?fife=w80-h100)
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Languages : de
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Author: James Leon Siegrist
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Category : Hadrons
Languages : en
Pages : 348
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![Evidence for F [superscript *] Meson Production in E+e- Annihilation at 10 GeV Center-of-mass Energy PDF](https://books.google.com/books/content/images/frontcover/YJm-GwAACAAJ?fife=w80-h100)
Author: ARGUS Collaboration
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Category :
Languages : en
Pages : 7
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