| Autor: |
ANTONIAZZI, L ARENTON, M CAO, Z CHEN, T CONETTI, S and COX, B DELCHAMPS, S FORTNEY, L GUFFEY, K HAIRE, M and IAONNOU, P JENKINS, CM JUDD, DJ KOURKOUMELIS, C and MANOUSAKISKATSIKAKIS, A KUZMINSKI, J LECOMPTE, T MARCHIONNI, A HE, M MAZUR, PO MURPHY, CT PRAMANTIOTIS, P and RAMEIKA, R RESVANIS, LK ROSATI, M ROSEN, J SHEN, C and SHEN, Q SIMARD, A SMITH, RP SPIEGEL, L STAIRS, DG and TAN, Y TESAREK, RJ TURKINGTON, T TURNBULL, L TURKOT, F and TZAMARIAS, S VOULGARIS, G WAGONER, DE WANG, C YANG, W YAO, N ZHANG, N ZHANG, X ZIOULAS, G ZOU, B |
| Jazyk: |
angličtina |
| Rok vydání: |
1993 |
| Popis: |
The production of the chi2 and chi2 states of charmonium has been observed in 300 GeV/c pi+/-N and pN interactions. The fraction of the total inclusive J/psi production due to radiative chi decay has been determined to be 0.40 +/- 0.04, 0.37 +/- 0.03, and 0.30 +/- 0.04 for the pi+, pi-, and proton data, respectively. Total cross sections for chi1 and chi2 production of 131 +/- 18 +/- 14 and 188 +/- 30 +/- 21 nb/nucleon in the 300 GeV/c pi-N interactions have been obtained. By measuring the contributions to the J/psi production due to both psi’ and radiative chi decay, the cross sections for direct J/psi production have been determined to be 97 +/- 14, 102 +/- 14, and 89 +/- 12 nb/nucleon for pi+, pi-, and protons, respectively. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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