Published December 6, 1991
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ππ and KK-bar channel coupling. Pt. 2
Creators
- 1. Istituto Nazionale di Fisica Nucleare, Bologna (Italy)
- 2. Paris-11 Univ., 91 - Orsay (France). Inst. de Physique Nucleaire
- 3. Paris-7 Univ., 75 (France)
- 4. Institute of Nuclear Physics, Cracow (Poland)
Description
A separable potential formalism is used to study KK-bar threshold effects. In addition to the ππ and KK-bar channels, a channel with heavy constituents is introduced to simulate the role of additional channels in building up the f0(975) meson, assuming no direct interaction in the KK-bar channel. As a consequence, the coupling between the exotic channel and the KK-bar channel is rather large. A method of reducing the three-channel problem to an effective two-channel one is shown. Various physical observables, like the decay branching ratio and the KK-bar scattering length, are discussed in this effective two-channel framework. (K.A.) 20 refs., 5 figs., 3 tabs
Availability note (English)
MF available from INIS under the Report Number.Files
25075633.pdf
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Additional details
Additional titles
- Subtitle (English)
- The f_0(975) meson and KK-bar threshold effects
Publishing Information
- Imprint Pagination
- 30 p.
- Report number
- IPNO-TH--91-9l
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 25075633
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- BRANCHING RATIO; COUPLING; D S MESONS; KAONIUM; KAONS; PIONS
- Descriptors DEC
- BOSONS; CHARM PARTICLES; CHARMED MESONS; ELEMENTARY PARTICLES; HADRONS; MESONS; PSEUDOSCALAR MESONS; STRANGE MESONS; STRANGE PARTICLES