Published March 1989
| Version v1
Journal article
Determination of the branching ratio of ρ0 → μ+μ- in the coherent dissociation π- → μ+μ-π- and π- → π+π-π-
Creators
- Antipov, Yu.M.1
- Batarin, V.A.1
- Bessubov, V.A.1
- Budanov, N.P.1
- Denisov, D.S.1
- Eroshin, O.V.1
- Gorin, Yu.P.1
- Kartasheva, V.G.1
- Petrukhin, A.I.1
- Polovnikov, S.A.1
- Stoianova, D.A.1
- Bilenky, M.S.2
- Gornushkin, Yu.A.2
- Kulinich, P.A.2
- Nosdrin, A.A.2
- Olshevski, A.G.2
- Vishnevski, A.V.2
- Frabetti, P.L.3, 4
- Palombo, F.5, 6
- Pirtzkhalava, R.V.7
- Roinishvili, V.N.7
- 1. Institut Fiziki Vysokikh Ehnergij, Serpukhov (USSR)
- 2. Joint Inst. for Nuclear Research, Dubna (USSR)
- 3. Istituto Nazionale di Fisica Nucleare, Bologna (Italy)
- 4. Bologna Univ. (Italy). Dipt. di Fisica
- 5. Istituto Nazionale di Fisica Nucleare, Milan (Italy)
- 6. Milan Univ. (Italy). Dipt. di Fisica
- 7. AN Gruzinskoj SSR, Tbilisi. Inst. Fiziki
Description
In the diffraction dissociation of π- into μ+μ-π- on a Cu nucleus at 50 GeV/c, the cross section σμ+μ-π- for the 1+S(ρ0π) wave was measured. The branching ratio of ρ0 → μ+μ- could be calculated from the ratio of this and the corresponding cross sections in the diffraction dissociation of π- into π+π-π-. The obtained value BRρ0→μ+μ- = (4.6 ± 0.2stat ± 0.2syst) 10-5 is in good agreement with the branching ratio BRρ0→e+e-, as expected if eμ universality holds. (orig.)
Additional details
Publishing Information
- Journal Title
- Zeitschrift fuer Physik, C
- Journal Volume
- 42
- Journal Issue
- 2
- Series
- Z. Phys., C.
- Journal Page Range
- 185-187
- ISSN
- 0170-9739
- CODEN
- ZPCFD
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 20020999
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- BRANCHING RATIO; COHERENT PRODUCTION; COPPER 63; COPPER 63 TARGET; DIFFRACTION MODELS; EFFECTIVE MASS; EXPERIMENTAL DATA; GEV RANGE 10-100; INTEGRAL CROSS SECTIONS; LEPTONIC DECAY; MASS SPECTRA; MUON PAIRS; MUONS MINUS; MUONS PLUS; PAIR PRODUCTION; PION MINUS REACTIONS; PIONS MINUS; PIONS PLUS; QUASI-ELASTIC SCATTERING; RELATIVISTIC RANGE; RHO-770 MESONS; S WAVES
- Descriptors DEC
- ANTILEPTONS; ANTIMATTER; ANTIPARTICLES; BASIC INTERACTIONS; BOSONS; COPPER ISOTOPES; CROSS SECTIONS; DATA; DECAY; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; GEV RANGE; HADRON REACTIONS; HADRONS; INFORMATION; INTERACTIONS; INTERMEDIATE MASS NUCLEI; ISOTOPES; LEPTONS; MASS; MATHEMATICAL MODELS; MATTER; MESON REACTIONS; MESONS; MUONS; NUCLEAR REACTIONS; NUCLEI; NUMERICAL DATA; ODD-EVEN NUCLEI; PARTIAL WAVES; PARTICLE DECAY; PARTICLE INTERACTIONS; PARTICLE MODELS; PARTICLE PRODUCTION; PION REACTIONS; PIONS; PSEUDOSCALAR MESONS; SCATTERING; SPECTRA; STABLE ISOTOPES; TARGETS; VECTOR MESONS; WEAK INTERACTIONS; WEAK PARTICLE DECAY