Study of massive electron pair production at the CERN intersecting storage rings
| Autor: | G.C. Moneti, W. Struczinski, W. J. Willis, S. Iwata, J.H. Cobb, R. Hogue, L. K. Resvanis, Christine Kourkoumelis, A.M. Cnops, I. Stumer, T. A. Filippas, D.C. Rahm, Aniello Nappi, D. Lissauer, C.W. Fabjan, Koji Nakamura, M. Goldberg, A.J. Lankford, P. Mouzourakis, E. Fokitis, I. Mannelli, Robert B. Palmer, N. Horwitz, P. Rehak, T. Fields |
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| Rok vydání: | 1980 |
| Předmět: |
Physics
Nuclear and High Energy Physics Electron pair Range (particle radiation) Particle physics Large Hadron Collider Intersecting Storage Rings Continuum (design consultancy) Astrophysics::Cosmology and Extragalactic Astrophysics Helicity Nuclear physics Transverse momentum High Energy Physics::Experiment Astrophysics::Earth and Planetary Astrophysics Nuclear Experiment Scaling Particle Physics - Experiment Astrophysics::Galaxy Astrophysics |
| Zdroj: | Physics Letters B. 91:475-480 |
| ISSN: | 0370-2693 |
| Popis: | Data from a study of electron pairs produced in pp collisions (√s = 5 and 63 GeV) are used to extend measurements of the scaling function down to m/√s ≈ 0.07 (4.5 < m < 19 GeV). The dilepton continuum can be described by the scaling formula (fx475-1) The average transverse momentum of dielectrons was found to be 1.43 ± 0.07 GeV, independent of mass (in the range 4.5 < m < 8.7 GeV) and rising with √s. The angular decay distribution of the pairs was measured in the s-channel helicity system and found to behave like 1 + α cos2θ, where α = 1.15 ± 0.34. The angular decay of ϒ at the same energies was found to have α = 0.31 ± 0.35. |
| Databáze: | OpenAIRE |
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