Search Results - "Bugg, D.V"

Four sorts of meson by Bugg, D.V.

“…An extensive spectrum of light non-strange q q ̄ states up to a mass of 2400 MeV has emerged from Crystal Barrel and PS172 data on p ̄ p→Resonance→A+B in 17…”
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WITHDRAWN: Z + ( 4430 ) as a cusp in D ∗ ( 2010 ) D ¯ 1 ( 2420 ) by Bugg, D.V.

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A study in depth of f0(1370) by Bugg, D.V.

“…Claims have been made that f0(1370) does not exist. The five primary sets of data requiring its existence are refitted with suitable Breit–Wigner amplitudes…”
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The kappa in E791 data for D → K π π by Bugg, D.V.

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Comments on the σ and κ by Bugg, D.V

“…Evidence for the σ pole has been reported in production processes such as D+→π+π−π+; likewise evidence for the κ pole appears in D+→K−π+π+. Their effects in ππ…”
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The nature of σ, κ, a0(980) and f0(980) by van Beveren, E., Bugg, D.V., Kleefeld, F., Rupp, G.

“…Masses and widths of the four light scalar mesons σ, κ, a0(980) and f0(980) may be reproduced in a model where mesons scatter via a qq¯ loop. A transition…”
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Erratum to: “Comments on the σ and κ” [Phys. Lett. B 572 (2003) 1] by Bugg, D.V.

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The kappa in E791 data for D→Kππ by Bugg, D.V.

“…A combined fit is made to E791 data on D→Kππ, LASS data on Kπ elastic scattering, and BES II data on J/Ψ→K∗(890)Kπ. In all cases, the Kπ S-wave is fitted well…”
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Observation of f0(1770)→ ηη in [formula omitted] reactions from 600 to 1200 MeV/ c by Anisovich, A.V., Baker, C.A., Batty, C.J., Bugg, D.V., Haddock, R.P., Hodd, C., Nikonov, V.A., Sarantsev, A.V., Sarantsev, V.V., Scott, I., Zou, B.S.

“…We present data on p ̄ p→ηηπ 0 at beam momenta of 600, 900, 1050, and 1200 MeV/ c. At the higher three momenta, a signal is clearly visible due to p ̄ p→f…”
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A feature of BESIII data for J/Ψ→γ(η′ππ) and comments on η(1405) and η(1475) by Bugg, D.V.

“…The X(1835) has been confirmed clearly in new BESIII data for J/Ψ→γ(η′ππ); the angular distribution of the photon is consistent with a pseudoscalar. This makes…”
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Reconciling φ radiative decays with other data for a0(980), f0(980), ππ→KK and ππ→ηη by Bugg, D.V.

“…Data for φ→γ(ηπ0) are analysed using the KK loop model and compared with parameters of a0(980) derived from Crystal Barrel data. The ηπ mass spectrum agrees…”
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Decays of σ, κ, a0(980) and f0(980) by Bugg, D.V.

“…Ratios of coupling constants for these decays are compared with qq̄ predictions and Jaffe’s q2q̄2 model. In both models, the predicted ratio g2(κ→Kπ)/g2(σ→ππ)…”
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A fresh look at [η.sub.2] in [bar.p]p → η[π.sup.0][π.sup.0][π.sup.0] by Anisovich, A.V, Batty, C.J, Bugg, D.V, Nikonov, Y.A, Sarantsev, A.V

“…There is a large discrepancy between results of Crystal Barrel and WA102 for the branching ratio R = BR[[η.sub.2](1870) → [a.sub.2](1320)π]/BR[[η.sub.2](1870)…”
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Parity doubling and highly excited mesons by Bugg, D.V.

“…Glozman has proposed that highly excited mesons and baryons fall into parity doublets, and that the f4(2050) on the leading Regge trajectory should have a…”
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Reinterpreting several narrow ‘resonances’ as threshold cusps by Bugg, D.V.

“…The threshold p¯p peak in BES data for J/Ψ→γp¯p may be fitted as a cusp. It arises from the well-known threshold peak in p¯p elastic scattering due to…”
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Covariant tensor formalism for partial-wave analyses of ψ decay to mesons by Zou, B.S., Bugg, D.V.

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Experimental disagreements with extended unitarity by Bugg, D.V.

“…In production processes, e.g. J/Ψ→ωππ or p̄p→3π, the σ and f 0 (980) overlap in the same partial wave. The conjecture of extended unitarity (EU) states that…”
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Resonances around 2 GeV: [formula omitted] and glueballs by Bugg, D.V

“…Crystal Barrel data reveal systematics of q q resonances up to 2410 MeV. In particular, all expected J PC = 2 ++, I = 0, q q states may be identified in this…”
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Study of [formula omitted] from 600 to 1940 MeV/c by Bugg, D.V.

“…Data on pp → ηηπ 0 are presented at 9 momenta 600–1940 MeV/c. A broad high mass 2 + resonance is observed in ηη with mass M = 1980 ± 50 MeV and width Γ = 500 ±…”
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New results on ππ phase shifts between 600 and 1900 MeV by Bugg, D.V., Sarantsev, A.V., Zou, B.S.

“…With a new formulation for ππ amplitudes and some guidance from other new experimental results, we re-analyse the old CERN-Munich data for the reaction π − p →…”
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