An amplitude analysis of ππ scattering from new data on the reaction π-p→π+π-n
Creators
- Corden, M.J.1
- Dowell, J.D.1
- Garvey, J.1
- Jobes, M.1
- Kenyon, I.R.1
- Mawson, J.1
- McMahon, T.1
- Corbett, I.F.2
- Esterling, R.J.2
- Lipman, N.H.2
- Litchfield, P.J.2
- Sumorok, K.C.T.O.2
- Alexander, G.3
- Dagan, S.3
- Gnat, Y.3
- Bellamy, E.H.4
- Green, M.G.4
- Harnew, N.4
- Lister, J.B.4
- Lister, J.R.4
- Robertson, A.W.4
- Stacey, B.J.4
- Strong, J.A.4
- Thomas, D.H.4
- 1. Birmingham Univ. (UK)
- 2. Science Research Council, Chilton (UK). Rutherford Lab.
- 3. Tel Aviv Univ. (Israel)
- 4. Westfield Coll., London (UK)
Description
The authors have carried out a partial-wave analysis of ππ scattering in the mass range 1.0 to 2.08 GeV/c2. Solutions similar to those obtained in previous analyses below 1.8 GeV/c2 are found, but, in addition, a new solution is obtained which does not suffer from violations of unitarity and is compatible with data from other channels. This solution, when continued to 2.08 GeV/c2, shows a g meson with mass and width of 1.734+-0.010 GeV/c2 and 0.322+-0.035 GeV/c2 respectively, and an h meson with mass 1.935+-0.013 GeV/c and width 0.263+-0.057 GeV/c2. The L=2 partial wave contains the f meson and an additional resonance with parameters m=1.502+-0.025 GeV/c2. GAMMA=0.165+-0.042 GeV/c2 and x=0.19+-0.03. If this state is associated with the f'(1514) the ππ branching fraction is considerably higher than previous determinations. An SU(3) fit to the 2+ nonet yields a mixing yield angle of 38.4+-1.30. (Auth.)
Additional details
Publishing Information
- Journal Title
- Nucl. Phys., B
- Journal Volume
- 157
- Journal Issue
- 2
- Series
- Nucl. Phys., B.
- Journal Page Range
- 250-272
- ISSN
- 0029-5582
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- Netherlands
- INIS RN
- 11507251
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- ARGAND DIAGRAMS; DIFFERENTIAL CROSS SECTIONS; FOUR MOMENTUM TRANSFER; GEV RANGE 10-100; NEUTRONS; OPE MODEL; PARTIAL WAVES; PION MINUS-PROTON INTERACTIONS; PIONS MINUS; PIONS PLUS; SCATTERING AMPLITUDES; T CHANNEL
- Descriptors DEC
- AMPLITUDES; ANTIMATTER; ANTIMESONS; ANTIPARTICLES; BARYONS; BOSON-EXCHANGE MODELS; BOSONS; CROSS SECTIONS; DIAGRAMS; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; GEV RANGE; HADRON-HADRON INTERACTIONS; HADRONS; INFORMATION; INTERACTIONS; MATHEMATICAL MODELS; MATTER; MESON-BARYON INTERACTIONS; MESON-NUCLEON INTERACTIONS; MESONS; MOMENTUM TRANSFER; NUCLEONS; OBE MODEL; PARTICLE INTERACTIONS; PARTICLE MODELS; PERIPHERAL MODELS; PION-NUCLEON INTERACTIONS; PION-PROTON INTERACTIONS; PIONS; PSEUDOSCALAR ANTIMESONS; PSEUDOSCALAR MESONS