| Autor: |
Adams, G.S., Napolitano, J., Ecklund, K.M., Insler, J., Muramatsu, H., Park, C.S., Pearson, L.J., Thorndike, E.H., Ricciardi, S., Thomas, C., Artuso, M., Blusk, S., Mountain, R., Skwarnicki, T., Stone, S., Zhang, L.M., Bonvicini, G., Cinabro, D., Lincoln, A., Smith, M.J., Zhou, P., Zhu, J., Naik, P., Rademacker, J., Asner, D.M., Edwards, K.W., Randrianarivony, K., Tatishvili, G., Briere, R.A., Vogel, H., Onyisi, P.U.E., Rosner, J.L., Alexander, J.P., Cassel, D.G., Das, S., Ehrlich, R., Gibbons, L., Gray, S.W., Hartill, D.L., Heltsley, B.K., Kreinick, D.L., Kuznetsov, V.E., Patterson, J.R., Peterson, D., Riley, D., Ryd, A., Sadoff, A.J., Shi, X., Sun, W.M., Yelton, J., Rubin, P., Lowrey, N., Mehrabyan, S., Selen, M., Wiss, J., Libby, J., Kornicer, M., Mitchell, R.E., Shepherd, M.R., Szczepaniak, A., Besson, D., Pedlar, T.K., Cronin-Hennessy, D., Hietala, J., Dobbs, S., Metreveli, Z., Seth, K.K., Tomaradze, A., Xiao, T., Martin, L., Powell, A., Wilkinson, G., Ge, J.Y., Miller, D.H., Shipsey, I.P.J., Xin, B. |
| Jazyk: |
angličtina |
| Rok vydání: |
2011 |
| Zdroj: |
IndraStra Global. |
| ISSN: |
2381-3652 |
| Popis: |
Using a data sample of 2.59�107 ?(2S) decays obtained with the CLEO-c detector, we perform amplitude analyses of the complementary decay chains ?(2S)??? c1; ? c1??? +? - and ?(2S)??? c1; ? c1?? ?? +? -. We find evidence for an exotic P-wave ? ?? amplitude, which, if interpreted as a resonance, would have parameters consistent with the ? 1(1600) state reported in other production mechanisms. We also make the first observation of the decay a 0(980) ?? ?? and measure the ratio of branching fractions B(a 0(980)?? ??)/B(a 0(980) ???)=0.064�0.014�0.014. The ?? spectrum produced with a recoiling ? is compared to that with ? ? recoil. � 2011 American Physical Society. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
