An Amplitude Analyses of the K K-bar System (M [2 GeV/C2) Produced in J/[Psi] Radiative Decay PDF Download
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![An Amplitude Analyses of the K K-bar System (M [2 GeV/C2) Produced in J/[Psi] Radiative Decay PDF](https://books.google.com/books/content/images/frontcover/1YVqAQAACAAJ?fife=w150-h200)
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Languages : en
Pages : 148
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![An Amplitude Analyses of the K K-bar System (M [2 GeV/C2) Produced in J/[Psi] Radiative Decay PDF](https://books.google.com/books/content/images/frontcover/1YVqAQAACAAJ?fife=w80-h100)
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Languages : en
Pages : 148
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Author:
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Category :
Languages : en
Pages : 148
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Using the 5.8 × 106 J/? events collected by the MARK 3 experiment on the SPEAR ee− storage ring at SLAC, a mass independent amplitude analysis of the J/? →? K{sub s}K{sub s} and J/? → K+K− decays is presented. For K{bar K} systems having mass less than 2 GeV/c2, the efficiency-corrected spherical harmonic moments of the J/? joint decay angular distribution are measured. Fits are then performed in each independent mass interval in order to extract the underlying helicity amplitude structure; amplitudes describing K{bar K} systems of spin zero and spin two are included simultaneously. For the first time, a large spin zero component in the?(1720) mass region is observed; consistent results are obtained for the data samples corresponding to the individual decay modes. This structure is attributed to the production of an S wave resonance, the f0(1710), of mass and width M = 1710 {plus minus} 10 MeV/c2,? = 186 {plus minus} 30 MeV/c2, respectively, with branching fraction Bf(J/? →?f0, f0 → K{bar K}) = (6.47 {plus minus} 1.14 {plus minus} 0.84) × 10−4. A small amount ( -24%) of spin two component in this mass region cannot be ruled out with the present statistics. These results revise the previous conclusion that the?(1720) is a spin two resonance, a result obtained on the basis of spin hypothesis tests, which assumed that either pure spin zero or pure spin two states contribute in this mass region, but not both. The previous measurements of the f2??2032? (1525) have been refined in the present analysis because of the simultaneous inclusion of spin zero and spin two amplitudes in the fit.
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Category : Power resources
Languages : en
Pages : 754
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Category : Nuclear energy
Languages : en
Pages : 682
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Category :
Languages : en
Pages : 5
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Preliminary results of a mass independent amplitude analysis of J/[psi] radiative decays into K {bar K} final states are presented. A large component of spin zero is observed at the f2/[theta](1720) mass region; however, a small spin two component at this mass region cannot be excluded with the present statistics. 9 refs., 7 figs.
![J/[psi] Radiative Decay to Two Pseudoscalar Mesons from Mark III. PDF](https://books.google.com/books/content/images/frontcover/l-XkjwEACAAJ?fife=w80-h100)
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Languages : en
Pages :
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The results of amplitude analyses of the Mark III data on the K[sub s][sup 0]K[sub s][sup 0], K[sup+]K[sup -] and[pi][sup+][pi][sup -] systems produced in J/[psi] radiative decay are shown for the mass range 1--2 GeV. The intensity distributions for the amplitudes having J[sup PC] values 0[sup+2] and 2[sup+2] are presented and discussed. The observed strong production of the f[sub 0](1700) in J/[psi] radiative decay suggests that this state may consist primarily of the lightest scalar glueball state. No significant production of spin 2 is observed in the 1.7 GeV mass region.
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Category :
Languages : en
Pages : 6
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The results of amplitude analyses of the Mark III data on the K{sub s}°K{sub s}°, KK− and?+?− systems produced in J/? radiative decay are shown for the mass range 1--2 GeV. The intensity distributions for the amplitudes having J{sup PC} values 0{sup +2} and 2{sup +2} are presented and discussed. The observed strong production of the f0(1700) in J/? radiative decay suggests that this state may consist primarily of the lightest scalar glueball state. No significant production of spin 2 is observed in the 1.7 GeV mass region.
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Category : Science
Languages : en
Pages : 1320
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ISBN:
Category :
Languages : en
Pages : 164
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Author: Liang-Ping Chen
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ISBN:
Category : Kaons
Languages : en
Pages : 296
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