Exotic meson production in the f(1)(1285)pi(-) system observed in the reaction pi(-)p ->eta pi(+)pi(-)pi(-)p at 18 GeV/c

Kuhn, J.; Adams, G.S.; Adams, T.; Bar-Yam, Z.; Bishop, J.M.; Bodyagin, V.A.; Brown, D.S.; Cason, N.M.; Chung, S.U.; Cummings, J.P.; Danyo, K.; Demianov, A.I.; Denisov, S.P.; Dorofeev, V.; Dowd, J.P.; Eugenio, P.; Fan, X.L.; Gribushin, A.M.; Hackenburg, R.W.; Hayek, M.; Hu, J.; Ivanov, E.I.; Joffe, D.; Kachaev, I.; Kern, W.; King, E.; Kodolova, O.L.; Korotkikh, V.L.; Kostin, M.A.; Lipaev, V.V.; LoSecco, J.M.; Lu, M.; Manak, J.J.; Napolitano, J.; Nozar, M.; Olchanski, C.; Ostrovidov, A.I.; Pedlar, T.K.; Popov, A.V.; Ryabchikov, D.I.; Sarycheva, L.I.; Seth, K.K.; Shenhav, N.; Shen, X.; Shephard, W.D.; Sinev, N.B.; Stienike, D.L.; Suh, J.S.; Taegar, S.A.; Tomaradze, A.; Vardanyan, I.N.; Weygand, D.P.; White, D.B.; Willutzki, H.J.; Witkowski, M.; Yershov, A.A.

Авторы: Kuhn J., Adams G.S., Adams T., Bar-Yam Z., Bishop J.M., Bodyagin V.A., Brown D.S., Cason N.M., Chung S.U., Cummings J.P., Danyo K., Demianov A.I., Denisov S.P., Dorofeev V., Dowd J.P., Eugenio P., Fan X.L., Gribushin A.M., Hackenburg R.W., Hayek M., Hu J., Ivanov E.I., Joffe D., Kachaev I., Kern W., King E., Kodolova O.L., Korotkikh V.L., Kostin M.A., Lipaev V.V., LoSecco J.M., Lu M., Manak J.J., Napolitano J., Nozar M., Olchanski C., Ostrovidov A.I., Pedlar T.K., Popov A.V., Ryabchikov D.I., Sarycheva L.I., Seth K.K., Shenhav N., Shen X., Shephard W.D., Sinev N.B., Stienike D.L., Suh J.S., Taegar S.A., Tomaradze A., Vardanyan I.N., Weygand D.P., White D.B., Willutzki H.J., Witkowski M., Yershov A.A.
Журнал: Physics Letters B
Том: 595
Год издания: 2004
Издательство: Elsevier BV
Местоположение издательства: Netherlands
Первая страница: 109
Последняя страница: 117
DOI: 10.1016/j.physletb.2004.05.032
Аннотация: This Letter reports results from the partial wave analysis of the pi(-)pi(-)pi(+)eta final state in pi(-)p collisions at 18 GeV/c. Strong evidence is observed for production of two mesons with exotic quantum numbers of spin, parity and charge conjugation, J(PC) = 1(-+) in the decay channel f(1) (1285)pi(-). The mass M = 1709 +/- 24 +/- 41 MeV/c(2) and width F = 403 +/- 80 +/- 115 MeV/c(2) of the first state are consistent with the parameters of the previously observed pi(1) (1600). The second resonance with mass M = 2001 +/- 30 +/- 92 MeV/c(2) and width F = 333 +/- 52 +/- 49 MeV/c(2) agrees very well with predictions from theoretical models. In addition, the presence Of pi(2)(1900) is confirmed with mass M = 2003 +/- 88 +/- 148 MeV/c(2) and width F = 306 +/- 132 +/- 121 MeV/c(2) and a new state, a(1) (2096), is observed with mass M = 2096 +/- 17 +/- 121 MeV/c(2) and width Gamma = 451 +/- 41 +/- 81 MeV/c(2). The decay properties of these last two states are consistent with flux tube model predictions for hybrid mesons with non-exotic quantum numbers. (C) 2004 Elsevier B.V. All rights reserved.
Добавил в систему: Коротких Владимир Леонидович

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Exotic meson production in the f(1)(1285)pi(-) system observed in the reaction pi(-)p ->eta pi(+)pi(-)pi(-)p at 18 GeV/cстатья