PROPERTIES OF HADRON FINAL-STATES IN E+E- ANNIHILATION AT 13 GEV AND 17 GEV CENTER OF MASS ENERGIES

PROPERTIES OF HADRON FINAL-STATES IN E+E- ANNIHILATION AT 13 GEV AND 17 GEV CENTER OF MASS ENERGIES

We have observed e+e- hadrons at C.M. energies of 13 GeV and 17 GeV at PETRA using the TASSO detector. We find R(13 GeV) = 5.6 ± 0.7 and R(17 GeV) = 4.0 ± 0.7. The additional systematic uncertainty is 20%. Comparing inclusive charged hadron spectra we observe scaling between 5 GeV and 17 GeV for x =...

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Dettagli Bibliografici
Autori principali: Brandelik, R, Braunschweig, W, Gather, K, Jaax, B, Kadansky, V, Lubelsmeyer, K, Martyn, H, Peise, G, Rimkus, J, Sander, H, Schmitz, D, Schultzvondratzig, A, Trines, D, Wallraff, W, Boerner, H, Fischer, H, Hartmann, H, Hilger, E, Hillen, W, Knop, G, Korbach, W, Lohr, B, Roth, F, Ruhmer, W, Wedemeyer, R
Natura: Journal article
Lingua:English
Pubblicazione: 1979
Descrizione
Riassunto:We have observed e+e- hadrons at C.M. energies of 13 GeV and 17 GeV at PETRA using the TASSO detector. We find R(13 GeV) = 5.6 ± 0.7 and R(17 GeV) = 4.0 ± 0.7. The additional systematic uncertainty is 20%. Comparing inclusive charged hadron spectra we observe scaling between 5 GeV and 17 GeV for x = p/pbeam > 0.2; however the 13 GeV cross section is above the 17 GeV cross section for smaller x. This may be due to copious bb̄ production. The events become increasingly jet like at high energies as evidenced by a shrinking sphericity distribution with increasing energy. © 1979.

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