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Study Of Leading Strange Meson Resonances And Spin Orbit Splittings In K Sup P K Sup Pi Sup N At 11 Gev C
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Book Synopsis Study of Leading Strange Meson Resonances and Spin-orbit Splittings in K/sup -/p. --]. K/sup -/. Pi. /sup +/n at 11 GeV/c by :
Download or read book Study of Leading Strange Meson Resonances and Spin-orbit Splittings in K/sup -/p. --]. K/sup -/. Pi. /sup +/n at 11 GeV/c written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The results from a high-statistics study of K.pi. elastic scattering in the reaction K/sup -/p .-->. K/sup -/.pi./sup +/n are presented. The data for this analysis are taken from an 11-GeV/c K/sup -/p experiment performed on the Large Aperture Solenoidal Spectrometer (LASS) facility at the Stanford Linear Accelerator Center (SLAC). By selecting the very forward produced K/sup -/.pi./sup +/ events, a sample consisting of data for the K.pi. .-->. K.pi. elastic scattering reaction was extracted. The angular distribution for this meson-meson scattering is studied by use of both a spherical harmonic moments analysis and a partial-wave analysis (PWA). The previously established leading natural spin-parity strange meson resonances (the J/sup P/ = 1/sup -/ K*(895), the 2/sup +/ K*(1430), and the 3/sup -/ K*(1780)) are observed in the results from both the moments analysis and the PWA. In addition, evidence for a new spin 4/sup -/ K* resonance with a mass of 2080 MeV and a width of about 225 MeV is presented. The results from the PWA confirm the existence of a 0/sup +/ kappa (1490) and propose the existence of a second scalar meson resonance, the 0/sup +/ kappa' (1900). Structure in the P-wave amplitude indicates resonance behavior in the mass region near 1700 MeV. In two of the four ambiguous solutions for the mass region above 1800 MeV, there is strong evidence for another P-wave resonant structure near 2100 MeV. The observed strange meson resonances are found to have a natural interpretation in terms of states predicted by the quark model. In particular, the mass splittings of the leading trajectory natural spin-parity strange meson states and the mass splittings between the spin-orbit triplet states are discussed. 59 figures, 17 tables.
Book Synopsis Study of Leading Strange Meson Resonances and Spin-orbit Splittings in K−p. --]. K−. Pi. N at 11 GeV by :
Download or read book Study of Leading Strange Meson Resonances and Spin-orbit Splittings in K−p. --]. K−. Pi. N at 11 GeV written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The results from a high-statistics study of K.pi. elastic scattering in the reaction K−p .-->. K−.pi.n are presented. The data for this analysis are taken from an 11-GeV/c K−p experiment performed on the Large Aperture Solenoidal Spectrometer (LASS) facility at the Stanford Linear Accelerator Center (SLAC). By selecting the very forward produced K−.pi./sup +/ events, a sample consisting of data for the K.pi. .-->. K.pi. elastic scattering reaction was extracted. The angular distribution for this meson-meson scattering is studied by use of both a spherical harmonic moments analysis and a partial-wave analysis (PWA). The previously established leading natural spin-parity strange meson resonances (the J/sup P/ = 1− K*(895), the 2/sup +/ K*(1430), and the 3− K*(1780)) are observed in the results from both the moments analysis and the PWA. In addition, evidence for a new spin 4− K* resonance with a mass of 2080 MeV and a width of about 225 MeV is presented. The results from the PWA confirm the existence of a 0/sup +/ kappa (1490) and propose the existence of a second scalar meson resonance, the 0/sup +/ kappa' (1900). Structure in the P-wave amplitude indicates resonance behavior in the mass region near 1700 MeV. In two of the four ambiguous solutions for the mass region above 1800 MeV, there is strong evidence for another P-wave resonant structure near 2100 MeV. The observed strange meson resonances are found to have a natural interpretation in terms of states predicted by the quark model. In particular, the mass splittings of the leading trajectory natural spin-parity strange meson states and the mass splittings between the spin-orbit triplet states are discussed. 59 figures, 17 tables.
Book Synopsis A Study of Leading Strange Meson Resonances and Spin Orbit Splittings in K−p [arrow] K−[pi]+n at 11 GeV/c by : Alan Kern Honma
Download or read book A Study of Leading Strange Meson Resonances and Spin Orbit Splittings in K−p [arrow] K−[pi]+n at 11 GeV/c written by Alan Kern Honma and published by . This book was released on 1980 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book K−p Interactions at 11 GeV written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The status of our programmatic study of states containing a strange quark is briefly reviewed. An 11 GeV/c K−p experiment run on the LASS spectrometer at SLAC is discussed and preliminary results presented for several inelastic channels based on approximately one half of the available data sample. In addition, new results utilizing the full statistics of the experiment are presented for the elastic K−.pi./sup +/ channel from the K−.pi./sup +/n final state. The well established leading K*(890), K*(1435), and K*(1780) resonances are observed, and clear evidence is presented for a new J/sup p/ = 4/sup +/ resonance at approx. 2070 MeV. Preliminary results from an energy independent partial wave analysis of these data are presented which display unambiguous evidence for resonant structure in the non-leading 0/sup +/ and 1− waves.
Download or read book Physics Briefs written by and published by . This book was released on 1982 with total page 1130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Study of the Strange Meson Spectrum as Observed in the Reaction K−p-->K̄0[pi][pi]−n at 11 GeV/c by : Juha-Pekka Kalervo Sinervo
Download or read book A Study of the Strange Meson Spectrum as Observed in the Reaction K−p-->K̄0[pi][pi]−n at 11 GeV/c written by Juha-Pekka Kalervo Sinervo and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Strange Meson Resonances Observed in the Reaction K−p. --]. Anti K°. Pi. . Pi. −n at 11 GeV by :
Download or read book The Strange Meson Resonances Observed in the Reaction K−p. --]. Anti K°. Pi. . Pi. −n at 11 GeV written by and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A model incorporating K* resonance contributions and simple backgrounds is shown to quantitatively reproduce the mass dependence of the partial wave amplitudes governing the production and decay of the anti K°..pi ... pi..− system. A fit of this model to these amplitudes confirms the resonance interpretations of the well-established 1 K1(1400), the 2+ K2*(1430), the 3− K3*(1780), and the less well-known 1− states, the K*(1410) and the K*(1790). The 4+ amplitudes are shown to be consistent with the production and decay of the 4+ K4*(2060). A second 2+ enhancement at a mass of approx. 1.95 GeV/c2 can be interpreted as resonant and may be the radial excitation of the K2*(1430) or the triplet partner of the K4*(2060). New measurements of the masses, widths and branching ratios of these states are given, and the implications of these data for the spectroscopy of the nonstrange meson sector are discussed.
Book Synopsis A Study of Natural Spin-parity Strange Meson Radial Excitations in K−p[arrow]K−[pi]+n at 11 GeV/c by : Lloyd Stanley Durkin
Download or read book A Study of Natural Spin-parity Strange Meson Radial Excitations in K−p[arrow]K−[pi]+n at 11 GeV/c written by Lloyd Stanley Durkin and published by . This book was released on 1980 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis New Results on Mesons Containing Strange Quarks by :
Download or read book New Results on Mesons Containing Strange Quarks written by and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent results of strange and strangeonium mesons are presented. The data come from a high sensitivity study (4.1 ev/nb) of K−p interactions at 11 GeV/c using the LASS spectrometer at SLAC. The complete leading orbitally-excited K* series up through J/sup P/ = 5− and a substantial number of the expected underlying states are observed decaying into K−.pi., anti K3°.pi.pi.−, and K eta final states, and new measurements are made of their masses, widths, and branching ratios. Production of strangeonium states via hypercharge exchange is observed into K3°K3°, K−K+, and K3°K/sup + -/.pi./sup - +/ final states. The leading orbitally-excited phi series through J/sup P/ = 3− is clearly seen and evidence is presented for additional high spin structure in the 2.2 GeV/c2 region. No f2(1720) is observed. The K3°K/sup + -/.pi./sup - +/ spectrum is dominated by 1/sup +/(K* anti K + anti K* K) production in the region below 1.6 GeV/c2. These results are compared with data on the same systems produced by different production mechanisms. 12 refs., 28 figs.
Book Synopsis A Study of the Strange Meson Spectrum as Observed in the Reaction K-p [arrow] K̄0[pi]+[pi]-n at 11 GeV/c by : Juha-Pekka Kalervo Sinervo
Download or read book A Study of the Strange Meson Spectrum as Observed in the Reaction K-p [arrow] K̄0[pi]+[pi]-n at 11 GeV/c written by Juha-Pekka Kalervo Sinervo and published by . This book was released on 1986 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Strange Meson Spectroscopy in K[omega] and K[phi] at 11 GeV/c and Cherenkov Ring Imaging at SLD. by :
Download or read book Strange Meson Spectroscopy in K[omega] and K[phi] at 11 GeV/c and Cherenkov Ring Imaging at SLD. written by and published by . This book was released on 1993 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis consists of two independent parts; development of Cherenkov Ring Imaging Detector (CRID) system and analysis of high-statistics data of strange meson reactions from the LASS spectrometer. Part 1: The CRID system is devoted to charged particle identification in the SLAC Large Detector (SLD) to study e[sup +]e[sup [minus]] collisions at [radical]s = m[sub Z[sup 0]]. By measuring the angles of emission of the Cherenkov photons inside liquid and gaseous radiators, [pi]/K/p separation will be achieved up to [approximately]30 GeV/c. The signals from CRID are read in three coordinates, one of which is measured by charge-division technique. To obtain a [approximately]1% spatial resolution in the charge-division, low-noise CRID preamplifier prototypes were developed and tested resulting in
Book Synopsis Search for Backwards Produced Exotic Meson Resonances and Study of Particle Spectra and Mass Distributions in the Reaction. Pi. + P. --]. N (forward) + X/sup + +/ at 8. 4 GeV/c. [Upper Limits, G Parity, 8. 4 GeV/c]. by :
Download or read book Search for Backwards Produced Exotic Meson Resonances and Study of Particle Spectra and Mass Distributions in the Reaction. Pi. + P. --]. N (forward) + X/sup + +/ at 8. 4 GeV/c. [Upper Limits, G Parity, 8. 4 GeV/c]. written by and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Results are reported from a hybrid experiment designed to search for backwards produced I = 2 exotic meson resonances by investigating the backward scattering reactions: .pi. + p .-->. in (forward) + .pi.+.pi.+, .pi.+.pi.+.pi.+.pi.−, .pi.+.pi.+.pi.+.pi.+.pi.−.pi.−, and p anti p.pi.+.pi.+ at an incident pion momentum of 8.4 GeV/c. The SLAC 15'' rapid cycling bubble chamber, operating at 20 cycles per second, was triggered by detecting fast forward neutrons in an optical spark chamber and scintillation counter array downstream. Following two-component duality arguments, Jacob and Weyers and Rosner have suggested backward scattering processes as a favored mode for exotic meson resonance production. Upper limits of the order of one microbarn are reported for the production of narrow exotic meson resonances with masses less than or equal to 3 GeV and which could decay into even G-parity states: .pi./sup +/.pi./sup +/, .pi./sup +/.pi./sup +/.pi./sup +/.pi.−, .pi./sup +/.pi./sup +/.pi./sup +/.pi./sup +/.pi.−.pi.−, and p anti p.pi./sup +/.pi./sup +/. The mass resolution in the above channels varied from 5 to 30 MeV over the mass range for the most restrictive sample of events. The statistical significance of the data corresponds to 30 events per microbarn. Evidence for forward N* and rho° production are also reported. The main features of the data can be simulated by a Monte Carlo model which incorporates Lorentz-invariant phase space modified by exponential transverse momentum damping on each final state particle and, in addition, takes into account the geometrical constraints and trigger requirements of the experiment.
Book Synopsis Production Rates of Strange Vector Mesons at the Z[sup 0] Resonance by :
Download or read book Production Rates of Strange Vector Mesons at the Z[sup 0] Resonance written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation presents a study of strange vector meson production, [open-quotes]leading particle[close-quotes] effect and a first direct measurement of the strangeness suppression parameter in hadronic decays of the neutral electroweak boson, Z[sup 0]. The measurements were performed in e[sup+]e[sup -] collisions at the Stanford Linear Accelerator Center (SLAC) with the SLC Large Detector (SLD) experiment. A new generation particle ID system, the SLD Cerenkov Ring Imaging Detector (CRID) is used to discriminate kaons from pions, enabling the reconstruction of the vector mesons over a wide momentum range. The inclusive production rates of[phi] and K*[sup 0] and the differential rates versus momentum were measured and are compared with those of other experiments and theoretical predictions. The high longitudinal polarisation of the SLC electron beam is used in conjunction with the electroweak quark production asymmetries to separate quark jets from antiquark jets. K*[sup 0] production is studied separately in these samples, and the results show evidence for the[open-quotes]leading particle[close-quotes] effect. The difference between K*[sup 0] production rates at high momentum in quark and antiquark jets yields a first direct measurement of strangeness suppression in jet fragmentation.
Book Synopsis Strange Meson Spectroscopy in K[omega] and K[phi] at 11 GeV by :
Download or read book Strange Meson Spectroscopy in K[omega] and K[phi] at 11 GeV written by and published by . This book was released on 1993 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis consists of two independent parts; development of Cherenkov Ring Imaging Detector (CRID) system and analysis of high-statistics data of strange meson reactions from the LASS spectrometer. Part 1: The CRID system is devoted to charged particle identification in the SLAC Large Detector (SLD) to study e[sup +]e[sup [minus]] collisions at [radical]s = m[sub Z[sup 0]]. By measuring the angles of emission of the Cherenkov photons inside liquid and gaseous radiators, [pi]/K/p separation will be achieved up to [approximately]30 GeV/c. The signals from CRID are read in three coordinates, one of which is measured by charge-division technique. To obtain a [approximately]1% spatial resolution in the charge-division, low-noise CRID preamplifier prototypes were developed and tested resulting in
Book Synopsis Cerenkov Ring Imaging and Spectroscopy of Charged KSTAR Interactions at 11 GeV by :
Download or read book Cerenkov Ring Imaging and Spectroscopy of Charged KSTAR Interactions at 11 GeV written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The physics and technology of this new Cerenkov detector are discussed, including materials studies, construction techniques, and resolution measurements. Sources of resolution error are individually identified and measured where possible. The results of all studied indicate that the measurement resolution is understood. This work has led to the adoption of a large scale ring imaging detector as part of a new high energy physics spectrometer, the SLD, at the Stanford Linear Accelerator Center. Results from an amplitude analysis of strange meson final states in K/sup /minus//p .-->. /ovr K0/.pi./sup /minus//p interactions are presented. The data derive from a 4 event/nb exposure of the LASS (large Aperture Superconducting Solenoid) spectrometer to an 11 GeV/c K/sup /minus// beam. The data sample consists of (approximately)100,000 vents distributed over the Dalitz plot of the channel. The process is observed to be dominated by the production and decay of natural spin-parity (J/sup P/ = 1/sup /minus//,2,3/sup /minus//, /hor ellipsis/) strange meson states. The data can be understood in terms of a simple model in which the resonant /ovr K*−/ are produced predominantly via natural parity exchange in the t channel. The leading K*(890), K2*(1430), and K*(1780) resonances are clearly observed and measured, and the underlying spectroscopy is also extracted. Indications of higher mass resonance production are also shown. The observed properties of these states are used to confront current models of quark spectroscopy in strange meson systems. 94 refs., 96 figs., 23 tabs.
Book Synopsis Search for Backwards-produced Exotic Meson Resonances in 8.4 GeV/c $pi$$sup +$p Interactions by :
Download or read book Search for Backwards-produced Exotic Meson Resonances in 8.4 GeV/c $pi$$sup +$p Interactions written by and published by . This book was released on 1974 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Study of Natural Spin-parity Strange Meson Radial Excitations in K−p. --]. K−. Pi. N at 11 GeV by :
Download or read book Study of Natural Spin-parity Strange Meson Radial Excitations in K−p. --]. K−. Pi. N at 11 GeV written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Results are presented from a high statistics study of the reaction K−p .-->. K−.pi.n at 11 GeV/c. This data was selected offline from an approx. 1000 event/.mu.b K−p experiment run on the Large Aperture Solenoid Spectrometer (LASS) at SLAC which triggered on essentially the total inelastic cross section. This K−.pi.n sample, after cuts, contained approx. 42,000 events in the K.pi. invariant mass region from 0.65 GeV to 2.30 GeV, and absolute value t'
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