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An Amplitude Analysis Of The K K And Pi Sup Pi Sup Minus Systems M 2 Gev C Sup 2 Produced In J Psi Radiative Decay
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Book Synopsis An Amplitude Analysis of the K K And. Pi. Sup +. Pi. Sup Minus Systems (M [2 GeV/c Sup 2) Produced in J/. Psi. Radiative Decay by :
Download or read book An Amplitude Analysis of the K K And. Pi. Sup +. Pi. Sup Minus Systems (M [2 GeV/c Sup 2) Produced in J/. Psi. Radiative Decay written by and published by . This book was released on 1991 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Amplitude Analyses of the K K-bar System (M [2 GeV/C Sup 2) Produced in J/. Psi. Radiative Decay by :
Download or read book An Amplitude Analyses of the K K-bar System (M [2 GeV/C Sup 2) Produced in J/. Psi. Radiative Decay written by and published by . This book was released on 1991 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis J/[psi] Radiative Decay to Two Pseudoscalar Mesons from Mark III. by :
Download or read book J/[psi] Radiative Decay to Two Pseudoscalar Mesons from Mark III. written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Government Reports Annual Index by :
Download or read book Government Reports Annual Index written by and published by . This book was released on 1992 with total page 1846 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Amplitude Analyses of the K K-bar System (M [2 GeV/C2) Produced in J/[Psi] Radiative Decay by :
Download or read book An Amplitude Analyses of the K K-bar System (M [2 GeV/C2) Produced in J/[Psi] Radiative Decay written by and published by . This book was released on 1991 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1992 with total page 970 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Partial Wave Analysis of the K Sup + K Sup 0. Pi. Sup Minus System Produced in the Reaction. Pi. Sup Minus P Yields K Sup + K Sup 0. Pi. Sup Minus N at 8 GeV/c by :
Download or read book Partial Wave Analysis of the K Sup + K Sup 0. Pi. Sup Minus System Produced in the Reaction. Pi. Sup Minus P Yields K Sup + K Sup 0. Pi. Sup Minus N at 8 GeV/c written by and published by . This book was released on 1988 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have performed a partial wave analysis of the KK{sub S}°?− system produced in the reaction?−p → K+{bar K}°?−n at 8 GeV/c. We present the results of the analysis of 30,740 events in the mass range 1.24--1.60 GeV/c2, with 0.0 ≤ -t
Book Synopsis Preliminary Partial-wave Analysis of the K Sup + K Sup 0 Sub S. Pi. Sup Minus System Produced in 8 GeV/c K Sup Minus P Interactions by :
Download or read book Preliminary Partial-wave Analysis of the K Sup + K Sup 0 Sub S. Pi. Sup Minus System Produced in 8 GeV/c K Sup Minus P Interactions written by and published by . This book was released on 1990 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have performed a partial-wave analysis of the KK°{sub s}?- system produced in the reaction K−p → K+K°{sub s}?−?/? at 8 GeV/c. We present results of a preliminary analysis of approximately 2000 events in the K−K? mass range 1.24--1.64 GeV, with 0.0
Book Synopsis Partial Wave Analysis of K Anti K. Pi. from Anti P P Yields K Sup + Anti K Sup 0. Pi. Sup Minus X at 8 GeV/c by :
Download or read book Partial Wave Analysis of K Anti K. Pi. from Anti P P Yields K Sup + Anti K Sup 0. Pi. Sup Minus X at 8 GeV/c written by and published by . This book was released on 1990 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present the results of an amplitude analysis of the spin parity components as a function of mass of the (K{bar K}°[pi]−) system as produced in the reaction {bar p}p 2!(K{bar K}°[pi]−) X. Two peaks are observed in the (K−{bar K}°[pi]−) spectrum, one at (1279 {plus minus} 2) MeV/c2 with a width of (21 {plus minus} 2) MeV/c2, and one at (1417 {plus minus} 3) MeV/c2 with a width of (62 {plus minus} 5) MeV/c2. The amplitude analysis was performed in sixteen 20 MeV/c2 mass intervals from 1.24 to 1.56 GeV/c2. The waves used for the fitting were J{sup PG} = 0{sup -+}, 1{sup ++}, 1{sup +-}, and background. 12 refs., 8 figs.
Book Synopsis New Results in the Partial Wave Analysis of the K Sup Minus. Omega. System in the Reaction K Sup Minus P Yields K Sup Minus. Pi. Sup +. Pi. Sup Minus. Pi. Sup 0 P by :
Download or read book New Results in the Partial Wave Analysis of the K Sup Minus. Omega. System in the Reaction K Sup Minus P Yields K Sup Minus. Pi. Sup +. Pi. Sup Minus. Pi. Sup 0 P written by and published by . This book was released on 1991 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Preliminary results are presented from the first large-statistics partial wave analysis of K−? system produced in the reaction K{sup -p {yields} K−??−?°p at 11 GeV/c observed with the LASS spectrometer at SLAC. The analysis is based on the moments of the joint angular distributions of the decay to the K−?} system, with subsequent? decay to?+?−?0. The resulting J{sup P} = 2−, 2+ and 3− amplitudes exhibit resonant behavior, and are discussed in the context of the relevant Briet-Wigner fits.
Book Synopsis Radiative Decays of the Psi(3097) to Two Meson Final States by :
Download or read book Radiative Decays of the Psi(3097) to Two Meson Final States written by and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The MARK III detector operating at the SPEAR storage ring has acquired a sample of 2.7 x 106 produced psi(3097)'s. These events are used to investigate the radiative decays of the psi to two meson final states. Such decays are of topical interest because of the unusual QCD laboratory they provide - of particular interest is the possibility of observing glueball states. The process psi ..-->.. ..gamma pi ... pi..− is studied. The f(1270) tensor meson is observed and the helicity structure of its production is measured. The data indicate that helicity 2 is suppressed, in disagreement with lowest order QCD calculations. Evidence is presented for the first observation of the theta(1700) in the ..pi ... pi..− final state. The strong, but not complete, suppression of this state in the ..pi pi.. channel, combined with the absence of a J/sup P/ = 2+ signal in a recent MARK III analysis of psi ..-->.. ..gamma.. rho rho, suggest a very mysterious nature for the theta(1700). The process psi ..-->.. ..gamma..K+K− is also studied. The f'(1515) tensor meson is observed with a branching ratio in agreement with the SU(3) symmetry prediction for the standard two gluon radiative decay diagram with no mixing corrections. The helicity structure of the f'(1515) is measured for the first time, and is found to be similar to that of the f(1270). The theta(1700) is observed with high statistics. Its spin and parity are measured, with the result that J/sup P/ = 2+ is preferred over J/sup P/ = 0+ at the 99.9% C.L. In addition, evidence is presented for a remarkable narrow state, designated the xi(2220). Its parameters are measured to be: m = 2.218 +- 0.003 +- 0.010 GeV, GAMMA less than or equal to 0.040 GeV at 95% C.L., and BR(psi ..-->.. ..gamma..xi(2220))BR(xi(2220) ..-->.. K+K−) = (5.7 +- 1.9 +- 1.4) x 10−5.
Book Synopsis Production of The. Rho. Sub 1 (1300) in the Reaction K Sup Minus P Yields. Pi. Sup +. Pi. Sup Minus. Lambda. at 11 GeV/c by :
Download or read book Production of The. Rho. Sub 1 (1300) in the Reaction K Sup Minus P Yields. Pi. Sup +. Pi. Sup Minus. Lambda. at 11 GeV/c written by and published by . This book was released on 1991 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Amplitude Analysis of the K Anti K System in J/. Psi. Radiative Decay by :
Download or read book Amplitude Analysis of the K Anti K System in J/. Psi. Radiative Decay written by and published by . This book was released on 1990 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Observation of a Near-Threshold Enhancement in the P-anti-p Mass Spectrum from Radiative J/psi --] Gamma-p-anti-p Decays by :
Download or read book Observation of a Near-Threshold Enhancement in the P-anti-p Mass Spectrum from Radiative J/psi --] Gamma-p-anti-p Decays written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We observe a narrow enhancement near 2m[sub p] in the invariant mass spectrum of p[bar p] pairs from radiative J/[psi][yields][gamma]p[bar p] decays. No similar structure is seen in J/[psi][yields][pi][sup 0] p[bar p] decays. The results are based on an analysis of a 58 million event sample of J/[psi] decays accumulated with the BESII detector at the Beijing electron-positron collider. The enhancement can be fit with either an S- or P-wave Breit Wigner resonance function. In the case of the S-wave fit, the peak mass is below 2m[sup p] at M= 1859[sub -10][sup+3] (stat)[sub -25][sup+5] (sys) MeV/c[sup 2] and the total width is[Lambda]
Book Synopsis Pi. −p. --]. K/sub S/°K/sub S/°n at 22 Gev/c and a Systematic Study of the 2/sup + +/ and 0/sup + +/ Meson Spectrum by :
Download or read book Pi. −p. --]. K/sub S/°K/sub S/°n at 22 Gev/c and a Systematic Study of the 2/sup + +/ and 0/sup + +/ Meson Spectrum written by and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A coupled channel analysis has been carried out using amplitudes of the K/sub s/°K/sub s/° system produced in the reaction .pi.−p .-->. K/sub s/°K/sub s/°n at 22 Gev/c, which contained about 40,000 events in the low-t region (absolute value of t-tmin
Book Synopsis Results of Two Scattering Processes by :
Download or read book Results of Two Scattering Processes written by and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: An analysis is presented of 6658 events of the reaction .pi.−p .-->. phi phi n at 22 GeV/c. This data is well represented by three resonances, all with quantum numbers I/sup G/J/sup PC/ = 0/sup +/2/sup + +/. In a second analysis, which consists of 40494 new events of the reaction .pi.−p .-->. K/sub s/°K/sub s/°n at 22 GeV/c, we obtain the S0, D0 and G0 Argand amplitudes for .pi pi. .-->. K anti K. The theta (1690) is shown to decay into .pi pi. by less than 4% and only is required in J/psi radiative decay experiments.
Book Synopsis Comparison of PWA Results of K[sup +]K[sup O][sub S] [pi][sup [minus] Final States Produced in 8 GeV by :
Download or read book Comparison of PWA Results of K[sup +]K[sup O][sub S] [pi][sup [minus] Final States Produced in 8 GeV written by and published by . This book was released on 1991 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have performed partial-wave analyses of the K[sup +]K[sup o]s [pi][sup [minus]] system produced in the reactions K[sup [minus]]p [yields] K[sup +]K[sup o]s[pi][sup [minus]], [Lambda]/[Sigma], [pi][sup [minus]]p [yields] K[sup +]K[sup o]s [pi][sup [minus]]n and [bar p]p [yields] K[sup +]K[sup o]s[pi][sup [minus]] X at 8 GeV/c in substantially the same apparatus. We present and compare the results of the analysis of the three reactions in the mass range 1.24 GeV/c[sup 2]
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