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.

Download or read book J Radiative Decay to Two Pseudoscalar Mesons from Mark III written by and published by . This book was released on 1997 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Radiative Decay of the Psi 2S Into Two Pseudoscalar Mesons written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Radiative decays of the radically excited charmonium resonance, [psi](2S), into[pi][pi], K[bar K] and[eta][eta] final states have been measured in a sample of 3.96 x 10[sup 6][psi](2S) events collected by the BES collaboration. The branching ratios B([psi](2S)[yields][gamma]f[sub 2](1270))= (2.27[+-] 0.26[+-] 0.39) x 10[sup -4] and B([psi](2S)[yields][gamma]f[sub 0](1710)) x B(f[sub 0](1710)[yields] K[sup+]K[sup -])= (5.59[+-] 1.12[+-] 0.93) x 10[sup -5] are obtained. When compared to the corresponding radiative J/[psi] decays, the observed[psi](2S) radiative decay rates into[gamma]f[sub 2](1270) and[gamma]f[sub 0](1710) are consistent with the ''15%'' rule.

Download or read book J psi Results from Mark III written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements of the two body decays of the J/[psi] into vector and pseudoscalar meson pairs are presented. Using the measured branching ratios, a phenomenological model of J//psi/ decays indicates that the [eta] and [eta]' are composed only of light and strange quarks, without a gluonium contribution in the [eta]' wavefunction. A measurement of J//psi/ .-->. .gamma pi./sup +/.pi./sup -/.pi./sup +/.pi./sup -/ is presented. The f1 (1285) is observed and its spin and parity are investigated. The /eta//sub c/ is observed to decay to /rho/°/rho/°, and first indications of /eta//sub c/ decays to f2f2 are presented. The spin and parity of the /eta//sub c/ are investigated. 5 figs., 3 figs., 1 tab.

Download or read book Radiative Decay of psi 2S Into Two Pseudo scalar Mesons written by Wei Yang and published by . This book was released on 2000 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Energy Research Abstracts written by and published by . This book was released on 1990 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Results from MARK III on the J psi Decays written by and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The MARK III detector at the SPEAR ee/sup /minus// storage ring at SLAC accumulated a data sample of 5.8 × 106 J/[psi] produced in 1982, '83 and '85. Recent results in radiative decays, including different decay modes of the /eta//sub c/ and the search for scalars, are presented. The systematic study of the hadronic decays of the J//psi/ into a vector-tensor meson pair is discussed, and a detailed analysis of the decay mode J//psi/ .-->. .omega.f2(1270) is described. 12 refs., 12 figs., 1 tab.

Download or read book Review of J psi Decays written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent results from the Mark III collaboration in radiative J/[psi] decays are presented. This includes a study of iota/E decays in J//psi/ el/eta/ and elelp, two pseudoscalar decays near threshold in J//psi/ el and el /bar K/K and two vector decays in J//psi/ el /bar K//sup o/*K/sup o/*. 20 refs., 9 figs.

Download or read book High Energy Physics Index written by and published by . This book was released on 1993 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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.

Download or read book Radiative Delays of the J psi to Two Pseudoscalar Final States written by Timothy Alan Bolton and published by . This book was released on 1988 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Radiative Decays of the Psi 3097 to Two Meson Final States written by Kevin F. Einsweiler and published by . This book was released on 1984 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976-05 with total page 912 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Physics Briefs written by and published by . This book was released on 1991 with total page 1454 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book ERDA Energy Research Abstracts written by and published by . This book was released on 1987 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book PSI Radiative Decays written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Inclusive and exclusive measurements of psi radiative decay are presented. The magnitude of hard inclusive radiative decay is comparable to the prediction f first order QCD, but the measured spectrum is considerably softer. In addition to measurements of radiative decays to the known pseudoscalar and tensor mesons, a sizable decay to a resonance of mass 144015/sup +10/ MeV/c2 in the K anti K.pi. mode is observed. This may be the E(1420) meson. Supporting evidence is presented for the existence of the n/sub c/ at a mass of 2980 MeV/c2.

Download or read book INIS Atomindex written by and published by . This book was released on 1987 with total page 866 pages. Available in PDF, EPUB and Kindle. Book excerpt: