No abstract

Alde D. et al. Study of the π o π o-system with the GAMS-4000 spectrometer at 100 GeV/c: IHEP Preprint 98-23.-Protvino, 1998.-p. 24, figs. 11, refs.: 25. The π o π o-system produced in the charge exchange π − p-reaction at 100 GeV/c has been studied. The experiment was performed at the CERN SPS accelerator with the multiphoton hodoscope spectrometer GAMS-4000. A partial wave analysis was carried out in the mass range from 0.8 GeV to 3.0 GeV at −t < 0.2 (GeV/c) 2 with the S, D, G and J waves. The S-wave exhibited rather complicated behaviour with a series of four bumps separated by three dips, at 1 GeV, 1.5 GeV and 2 GeV, which give the evidence for several scalar resonances. Clear peaks corresponding to the f 2 (1270), f 4 (2050) and f 6 (2510) mesons were seen in the higher waves. All the three mesons were produced via a dominating one pion t-channel exchange. The parameters and production cross sections of these mesons were measured. aNNOTACIQ aLDI d. I DR. iZUˆENIE π o π o-SISTEMY NA SPEKTROMETRE gams-4000 PRI IMPULXSE 100 g"w/S: pREPRINT ifw-98-23.-pROTWINO, 1998.-24 S., 11 RIS., BIBLIOGR.: 25. iZUˆENA π o π o-SISTEMA, OBRAZU@]AQSQ W ZARQDOWOOBMENNOJ π − p-REAKCII PRI IMPULX-SE 100 g"w/S.-KSPERIMENT WYPOLNEN NA USKORITELE sps cern. dLQ REGISTRACII γ-KWANTOW OT RASPADOW π o-MEZONOW ISPOLXZOWALSQ GODOSKOPIˆESKIJ MNOGOFOTONNYJ SPEKTRO-METR gams-4000. pARCIALXNO-WOLNOWOJ ANALIZ π o π o-SISTEMY PROWEDEN W INTERWALE MASS OT 0,8 DO 3 g"w S UˆETOM S−, D−, G− I J-WOLN. S−WOLNA IMEET WESXMA SLOVNU@ STRUK-TURU, W NEJ NABL@DAETSQ SERIQ IZˆETYREH BAMPOW, RAZDELENNYH TREMQ PROWALAMI, OKOLO 1, 1,5 I 2 g"w, KOTORYE UKAZYWA@T NA SU]ESTWOWANIE NESKOLXKIH SKALQRNYH REZONANSOW. w WYS[IH WOLNAH NABL@DA@TSQˆETKIE PIKI, SOOTWETSTWU@]IE f 2 (1270)-, f 4 (2050)-I f 6 (2510)-MEZONAM. wSE TRI MEZONA OBRAZU@TSQ PUTEM DOMINIRU@]EGO ODNOPIONNOGO OBMENA. iZME-RENY IH PARAMETRY I SEˆENIQ OBRAZOWANIQ.

No abstract

No abstract

No abstract