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J Psi Radiative Decay To Two Pseudoscalar Mesons From Mark Iii
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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 J/? Radiative Decay to Two Pseudoscalar Mesons from Mark III. by :
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.
Book Synopsis Radiative Decay of the Psi (2S) Into Two Pseudoscalar Mesons by :
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.
Book Synopsis Radiative Decay of [psi](2S) Into Two Pseudo-scalar Mesons by : Wei Yang
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 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.
Book Synopsis Results from MARK III on the J//psi/ Decays by :
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.
Book Synopsis Radiative Delays of the J/psi to Two Pseudoscalar Final States by : Timothy Alan Bolton
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:
Book Synopsis Radiative Decays of the Psi(3097) to Two Meson Final States by : Kevin F. Einsweiler
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 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.
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 Exclusive Decays of J/[psi] to Vector Mesons Pairs by : Michele Scarlatella
Download or read book Exclusive Decays of J/[psi] to Vector Mesons Pairs written by Michele Scarlatella and published by . This book was released on 1986 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Book Synopsis Gluonic Mesons in J/[psi] Radiative Decay by :
Download or read book Gluonic Mesons in J/[psi] Radiative Decay written by and published by . This book was released on 1996 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Recent Results of Hadronic Decays of J by :
Download or read book Recent Results of Hadronic Decays of J written by and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: From a data sample of 5.8 x 106 J/psi's collected by the MARK III detector at the storage ring SPEAR at SLAC, two-body decay modes of the J/psi into a vector and a tensor meson have been measured. From the studies of the tensor meson, recoiling against the ideally mixed and well understood vector mesons, quark correlations are established and compared with the theoretical expectations of the J/psi decays and the SU(3) predictions. The beginnings of a similar systematic study of the two-body vector scalar decays are also presented.
Download or read book New Results on Radiative J written by and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Selected topics on radiative decays of the J/psi from MARK III at SPEAR are presented. These topics include the decay J/psi .-->. .gamma. K anti K where the final state resonances f'(1515), theta(1700) and xi(2200) have been analyzed. The decay J/psi .-->. (.gamma. vector vector) is presented in three final states, J/psi .-->. .gamma. phi phi, .gamma. rho rho and .gamma omega omega., providing the first measurement of the eta/sub c/ spin-parity (in .gamma. phi phi) and evidence for structures (in .gamma. rho rho and .gamma omega omega.) near 1.7 GeV. 24 references.
Book Synopsis Gluonic Mesons in J/psi Radiative Decay by : Philip R. Page
Download or read book Gluonic Mesons in J/psi Radiative Decay written by Philip R. Page and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Study of the Radiative Decay J written by and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Mark III collaboration has performed a high statistics study of the reaction J/psi .-->. .gamma.eta.pi./sup +/.pi.−, with two different final states of the eta, eta .-->. .gamma gamma. and eta .-->. .pi.°.pi./sup +/.pi.−. Both modes have a broad structure from 1.2 to 1.9 GeV/c2 and two structures, which decay via delta/sup + -/.pi./sup - +/, delta/sup + -/ .-->. eta.pi./sup + -/, are identified at 1.28 and 1.39 GeV/c2. No signal is observed in the iota(1440) signal region.
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