Inclusive cross section ratios in high pT proton-proton scattering at ISR energies
Creators
- Breakstone, A.1, 2
- Crawley, H.B.1, 2
- Firestone, A.1, 2
- Gorbics, M.1, 2
- Isenhower, D.1, 2
- Lamsa, J.W.1, 2
- Meyer, W.T.1, 2
- Campanini, R.3, 4
- Cuffiani, M.3, 4
- Deninno, M.M.3, 4
- Fabbri, F.3, 4
- Giacomelli, G.3, 4
- Rimondi, F.3, 4
- Siroli, G.P.3, 4
- Dallavalle, G.M.5
- Drijard, D.5
- Fischer, H.G.5
- Frehse, H.5
- Geist, W.5
- Gorski, M.5
- Heiden, M.5
- Lohse, T.5
- Panter, M.5
- Ullaland, O.5
- Yeung, R.5
- Doroba, K.6, 7
- Gokieli, R.6, 7
- Sosnowski, R.6, 7
- Szczekowski, M.6, 7
- Floege, H.8
- Gesswein, L.8
- Hanke, P.8
- Herr, W.8
- Kluge, E.E.8
- Nakada, T.8
- Putzer, A.8
- Rensch, B.8
- Mankel, R.9
- Rauschnabel, K.9
- Schmelling, M.9
- Wegener, D.9
- Ames-Bologna-CERN-Dortmund-Heidelberg-Warsaw Collaboration
- 1. Iowa State Univ. of Science and Technology, Ames (USA). Dept. of Physics
- 2. Ames Lab., IA (USA)
- 3. Istituto Nazionale di Fisica Nucleare, Bologna (Italy)
- 4. Bologna Univ. (Italy). Dipartimento di Fisica
- 5. European Organization for Nuclear Research, Geneva (Switzerland)
- 6. Institute for Nuclear Studies, Warsaw (Poland)
- 7. Warsaw Univ. (Poland)
- 8. Heidelberg Univ. (Germany, F.R.). Inst. fuer Hochenergiephysik
- 9. Dortmund Univ. (Germany, F.R.). Inst. fuer Physik
Description
Ratios of inclusive cross sections σ(π+)/σ(π+ + K+ + p) and σ(π-)/σ(π- + K-anti p) were measured for proton-proton interactions with a high pT hadron in the final state around c.m.s. scattering angles θ ≅ 100, 200 and 450 at two ISR energies √s = 31 GeV and 62 GeV. Results are shown as functions of transverse and longitudinal momentum and are compared with parton model predictions. The different dependences of positive and negative pion fractions at pT ≅ 2-3 GeV/c on longitudinal momenta is similar to that observed in soft hadronic interactions at low values of pT where the leading proton effect (diquark fragmentation) is known to contribute. The quantitative agreement of the data with diquark model predictions indicates the presence of diquark fragmentation also in high pT jets. (orig.)
Additional details
Publishing Information
- Journal Title
- Z. Phys., C
- Journal Volume
- 35
- Journal Issue
- 2
- Series
- Z. Phys., C.
- Journal Page Range
- 158-165
- ISSN
- 0170-9739
- CODEN
- ZPCFD
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 18067589
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- ANTIPROTONS; BRANCHING RATIO; EXPERIMENTAL DATA; GEV RANGE 10-100; INCLUSIVE INTERACTIONS; JET MODEL; KAONS MINUS; KAONS PLUS; LIMITING FRAGMENTATION; LONGITUDINAL MOMENTUM; PARTICLE PRODUCTION; PIONS MINUS; PIONS PLUS; PROTON-PROTON INTERACTIONS; PROTONS; QUARKS; TRANSVERSE MOMENTUM
- Descriptors DEC
- ANTIBARYONS; ANTIMATTER; ANTIMESONS; ANTINUCLEI; ANTINUCLEONS; ANTIPARTICLES; BARYON-BARYON INTERACTIONS; BARYONS; BOSONS; CATIONS; CHARGED PARTICLES; DATA; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; GEV RANGE; HADRON-HADRON INTERACTIONS; HADRONS; HYDROGEN IONS; HYDROGEN IONS 1 PLUS; HYPOTHESIS; INFORMATION; INTERACTIONS; IONS; KAONS; LINEAR MOMENTUM; MATHEMATICAL MODELS; MATTER; MESONS; NUCLEI; NUCLEON-NUCLEON INTERACTIONS; NUCLEONS; NUMERICAL DATA; PARTICLE INTERACTIONS; PARTICLE MODELS; PIONS; POSTULATED PARTICLES; PROTON-NUCLEON INTERACTIONS; PSEUDOSCALAR ANTIMESONS; PSEUDOSCALAR MESONS; STRANGE PARTICLES
Optional Information
- Contract/Grant/Project number
- Contract DE-AC03-76SF00098
- Collaborations
- Ames-Bologna-CERN-Dortmund-Heidelberg-Warsaw Collaboration.