We have searched for radiative decays of the Y(1S) resonance, Y(1S) -> gamma X, where X is one of the mesons eta, eta', f2(1270), f2(1720), or a narrow resonance with mass less than 3 GeV/c^2 which decays into either pi0 pi0 or eta eta. The mesons are identified in their all-neutral decay modes. Since we do not find any such decays, we calculate upper limits on the corresponding branching ratios. These limits are compared to theoretical predictions and to the orresponding branching ratios measured in radiative J/Psi decays.
Search For Radiative Y(1s) Decays Into Light Mesons / P., Schmitt; D., Antreasyan; H. W., Bartels; D., Besset; C., Bieler; J. K., Bienlein; Bizzeti, Andrea; E. D., Bloom; I., Brock; K., Brockmuller; R., Cabenda; A., Cartacci; M., Cavallisforza; R., Clare; A., Compagnucci; G., Conforto; S., Cooper; R., Cowan; D., Coyne; A., Engler; K., Fairfield; G., Folger; A., Eridman; J., Gaiser; D., Gelphman; G., Glaser; G., Godfrey; F. H., Heimlich; R., Hofstadter; J., Irion; Z., Jakubowski; K., Karch; S., Keh; H., Kilian; I., Kirkbride; T., Kloiber; M., Kobel; W., Koch; A. C., Konig; K., Konigsmann; R. W., Kraemer; S., Kruger; G., Landi; R., Lee; S., Leffler; R., Lekebusch; W., Lockman; S., Lowe; B., Lurz; D., Marlow; H., Marsiske; W., Maschmann; P., Mcbride; H., Meyer; B., Muryn; F., Messing; W. J., Metzger; B., Monteleoni; R., Nernst; B., Niczyporuk; G., Nowak; C., Peck; P. G., Pelfer; B., Pollock; F. C., Porter; D., Prindle; P., Ratoff; M., Reidenbach; B., Renger; C., Rippich; M., Scheer; J., Schotanus; J., Schutte; A., Schwarz; D., Sievers; T., Skwarnicki; V., Stock; K., Strauch; U., Strohbusch; J., Tompkins; H. J., Trost; B., Vanuitert; R. T., Vandewalle; H., Vogel; A., Voigt; U., Volland; K., Wachs; K., Wacker; W., Walk; H., Wegener; D., Williams; P., Zschorsch. - In: ZEITSCHRIFT FÜR PHYSIK. C, PARTICLES AND FIELDS. - ISSN 0170-9739. - STAMPA. - 40:(1988), pp. 199-206. [10.1007/BF01555882]
Search For Radiative Y(1s) Decays Into Light Mesons
BIZZETI, Andrea;
1988
Abstract
We have searched for radiative decays of the Y(1S) resonance, Y(1S) -> gamma X, where X is one of the mesons eta, eta', f2(1270), f2(1720), or a narrow resonance with mass less than 3 GeV/c^2 which decays into either pi0 pi0 or eta eta. The mesons are identified in their all-neutral decay modes. Since we do not find any such decays, we calculate upper limits on the corresponding branching ratios. These limits are compared to theoretical predictions and to the orresponding branching ratios measured in radiative J/Psi decays.Pubblicazioni consigliate
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