The production of pairs of (phi) mesons has been observed in 400 GeV/c proton-nucleon interactions at the Fermilab Multiparticle Spectrometer in the inclusive reaction p N (--->) (phi)(phi) + X, where each (phi) decays to a K+K-pair. / A fast (200ns), high-level trigger processor was used on-line to selectively trigger on events containing two pairs of oppositely charged kaons having low invariant masses. The experimental apparatus and trigger processor are described. / From a sample of 120,000 reconstructed events having at least 2 K+ and 2 K- tracks in the momentum range 5.8 (LESSTHEQ) p (LESSTHEQ) 23.0 GeV/c, the K+K-K+K-, (phi)K+K- and (phi)(phi) invariant mass spectra are presented. A total of 1503 events are identified as being consistent with (phi)(phi) production. / After background subtraction and acceptance corrections, the total cross sections per nucleon for (phi)(phi) and (phi)K+K- production at 400 GeV/c are found to be (sigma)(,T)(pN(--->)(phi)(phi)+X) = 0.87 (+OR-) 0.27 (mu)b and (sigma)(,T)(pN(--->)(phi)K+K-+X) = 23.6 (+OR-) 2.7 (mu)b. An upper limit on the cross section times branching ratio for (eta)(,c) production at 400 GeV/c is established to be (sigma)(,T)(pN(--->)(eta)(,c)+X)(.)BR((eta)(,c)(--->)(phi)(phi)) (LESSTHEQ) 30 nb. / Source: Dissertation Abstracts International, Volume: 46-01, Section: B, page: 0204. / Thesis (Ph.D.)--The Florida State University, 1984.

We have observed the D(1285) and E(1420) mesons in the interaction pp (--->) (K('+)K(,s)(pi)('-))X with a p beam at 6.6 GeV/c. The data were taken at the Brookhaven National Laboratory Multiparticle Spectrometer facility in the spring of 1983. We have 420 D events and 620 E events in a sample of 11,686 total events. We have fitted the K('+)K(,s)(pi)('-) mass spectrum, corrected for acceptance, with two Breit-Wigner functions and background. We have performed a Dalitz plot/Zemach analysis using intermediate decay modes (delta)(pi) and K('*)K and spin-parity/G-parity J('PG) 0('-+), 0('--), 1('++), 1('+-), 1('-+), 1('--). We find the D to have mass (1.277 (+OR-) .002) GeV and width (32 (+OR-) 8) MeV and to be consistent with J('PG) = 1('++), decay mode (delta)(pi). We find the E to have mass (1.424 (+OR-) .003) GeV and width (60 (+OR-) 10) MeV, with J('PG) = 1('++) and decay mode predominantly (delta)(pi), with some K('*)K present. We find a large non-resonant 1('++) K('*)K background in the E region. The results of the E analysis compare well with those from the (pi)('-)p (--->) (K('+)K(,s)(pi)('-))n experiment performed at the same facility by the same collaboration. / Source: Dissertation Abstracts International, Volume: 46-09, Section: B, page: 3096. / Thesis (Ph.D.)--The Florida State University, 1985.

Source: Dissertation Abstracts International, Volume: 32-09, Section: B, page: 5370. / Thesis (Ph.D.)--The Florida State University, 1971.

The coupling of primitive qq meson states to four-quark qq qq states is investigated. The basic mechanism is the production of a massive quark-antiquark pair. The Feynman diagram for this process is considered and, with suitable approximations, this diagram yields a coupling operator. The heavy meson systems cc and bb are treated in some detail. Energy shifts for the first three J('P) = 1('-) states in charmonium are found to be in the range 50-80 MeV. The calculated width of the state (psi)'' is 14 MeV. The decay (psi)'(--->)(psi)(eta) is treated as a two-stage process of pair production followed by quark exchange and a width of 1.6 keV is obtained. An attempt is made to study the lighter meson systems ss and nn. Using a coupling operator similar to that used for the heavy mesons, the widths of the (phi) and (rho) mesons are determined to within an order of magnitude. / Source: Dissertation Abstracts International, Volume: 45-09, Section: B, page: 2963. / Thesis (Ph.D.)--The Florida State University, 1984.

Source: Dissertation Abstracts International, Volume: 41-07, Section: B, page: 2654. / Thesis (Ph.D.)--The Florida State University, 1980.

This thesis presents a measurement of the inclusive cross-section for prompt photon production as a function of the invariant mass of the photon and highest energy jet in the final state. The experimental cross section is compared with a next-to-leading logarithm Quantum Chromodynamics (QCD) theoretical calculation. Also presented is a mass-fitting analysis in which the photon-jet invariant mass distribution is examined for evidence of excited quark production and decay, a signature of quark compositeness. No evidence of excited quark production was found. An upper limit on the excited quark cross section was established. This upper limit was compared with a theoretical prediction to set a lower limit on the mass of excited quarks of 531 GeV/$c\sp2,$ according to the assumptions of the model. / Source: Dissertation Abstracts International, Volume: 57-01, Section: B, page: 0420. / Major Professor: Horst Wahl. / Thesis (Ph.D.)--The Florida State University, 1995.

The results of an amplitude analysis to determine the spin-parity components of the $K\sp+{\bar K\sp0} \pi\sp{-}$ system produced in the reaction ${\bar p}p\to K\sp+{\bar K\sp0}\pi\sp-$ + X at 8 GeV/c are presented. This experiment has better particle identification than the previously reported results examining this reaction. A total of 3595 events was collected in the mass range 1.24-1.56 GeV/c$\sp2$. The data were collected at the Brookhaven National Laboratory Multi-Particle Spectrometer. Two peaks are observed in the $K\sp+{\bar K\sp0}\pi\sp-$ mass spectrum, one at (1279 $\pm$ 2) MeV/c$\sp2$ with a width of 21 $\pm$ 2) MeV/c$\sp2$, and one at (1417 $\pm$ 3) MeV/c$\sp2$ with a width of (62 $\pm$ 5) MeV/c$\sp2$. / There is evidence for two resonances around 1.3 GeV/c$\sp2$. The $J\sp{PG}$ = 1$\sp{++}$ resonance that peaks near 1.27 Gev/c$\sp2$ is identified with the $f\sb1$(1285). The $J\sp{PG}$ = 0$\sp{-+}$ resonance observed at the same mass is identified with the $\eta$(1280). / In the 1.4 GeV/c$\sp2$ range, the data are consistant with the presence of at least one $J\sp{PG}$ = 0$\sp{-+}$ resonance that peaks near 1.43 GeV/c$\sp2$. This resonance decays only to $a\sb{0}\pi$. There is also evidence for a 1$\sp{++}K\sp{\*}K$ resonance that peaks around 1.40 GeV/c$\sp2$. These results are in agreement with the results from the partial wave analysis performed by members of this collaboration on the $K\sp+{\bar K\sp0}\pi\sp-$ system produced in the reaction $\pi\sp-p\to K\sp+{\bar K\sp0}\pi\sp-n$ at 8 GeV/c. / This experiment also examined the reactions ${\bar p}p\to{\bar \Lambda}p+\pi s+X$ in a search for the U(3100). No evidence for the U(3100) is observed. / Source: Dissertation Abstracts International, Volume: 51-09, Section: B, page: 4405. / Major Professor: Vasken Hagopian. / Thesis (Ph.D.)--The Florida State University, 1990.

K$\sp- p$ interactions at 8 GeV/c have been produced at Brookhaven National Laboratory's Multi-Particle Spectrometer to study the final state $K\sp+{\bar K\sp0}\pi\sp-$ in the mass range 1-2 GeV/c$\sp2$. A total of 1711 events have been produced in the reaction $K\sp- p\to(K\sp+{\bar K\sp0}\pi\sp-$) + Y where Y is a neutral baryon with strangeness $-$1. The Y's identified include the $\Lambda$(1115), $\Sigma$(1192), $\Sigma$(1385), and $\Lambda$(1530). / We see no clear signals for the resonances D(1285), E(1420), and $D\sp\prime$(1520). Upper limits for the production cross sections of these mesons are computed. Through comparison with data obtained in the reaction $\pi\sp- p\to$($K\sp+{\bar K\sp0}\pi\sp-$) + n we find that the production cross sections for the D(1285) and E(1420) are at least an order of magnitude smaller for the $K\sp{-}p$ interactions than for the $\pi\sp{-}p$ interactions, while that of the $D\sp\prime$(1530) may be of the same order of magnitude for both interactions, indicating the possibility of a significant $s{\bar s}$ component. / Also, a Partial Wave Analysis shows some evidence of an interference of 1$\sp{++}$ and 1$\sp{+-} J\sp{PG}$ states near 1.4 GeV/c$\sp2$. The 1$\sp{+-}$ wave appears to be the strongest in this mass region. / Source: Dissertation Abstracts International, Volume: 51-09, Section: B, page: 4405. / Major Professor: Vasken Hagopian. / Thesis (Ph.D.)--The Florida State University, 1990.

The average fraction ($\equiv\langle{\cal Z}\rangle$) of jet momentum carried by the associated charged leading hadron has been determined in the reaction $p$ + $N\ \to\ h\sb1$ + $h\sb2$ + $X$ where $h\sb1$ and $h\sb2$ were two high P$\sb\bot$ hadrons, leading particles of two jets produced at high P$\sb\bot$. A 800 GeV/c proton beam and four nuclear targets: beryllium, aluminium, iron and tungsten were used. The data were taken at the Fermi National Accelerator Laboratory from November 1987-February 1988. / The detector was a double arm magnetic spectrometer, with two sampling calorimeters for real-time event selection and was capable of operating at a high interaction rate ($\approx$2.5 $\times$ 10$\sp6$ interactions per second). / $\langle{\cal Z}\rangle$, connected to the fragmentation process of the scattered partons in the QCD-parton model, has been determined as a function of the transverse momentum of the leading hadron and the cosine of the scattering angle of the leading hadron pair in the di-hadron C.o.M. system, for positive, negative and both sign charges of the leading hadron and for each target. / The fragmentation process was found to be independent of nuclear effects and the amount of nuclear matter crossed by the fragmenting parton. The $\langle{\cal Z}\rangle$ distributions agree with the QCD-parton model predictions for single independent parton-parton scattering and independent fragmentation process. / Agreement has also been found between these data and previous published ones obtained in a $pp$ collider experiment confirming the independence of the fragmentation process from nuclear effects in high P$\sb\bot$ interactions. / Source: Dissertation Abstracts International, Volume: 51-04, Section: B, page: 1882. / Major Professor: David A. Levinthal. / Thesis (Ph.D.)--The Florida State University, 1990.

We present a technique for using a Monte Carlo method to perform the phase space integrations used in calculating the next-to-leading-logarithm, QCD contribution to symmetric dihadron production. We show that this method is relatively simple, straightforward, and sufficiently flexible so as to be applicable to a broad range of next-to-leading-log calculations. / Source: Dissertation Abstracts International, Volume: 50-03, Section: B, page: 0998. / Major Professor: Joseph F. Owens. / Thesis (Ph.D.)--The Florida State University, 1989.