Detalle de: Measurement of inclusive f1(1285) and f1(1420) production in Z decays with the DELPHI detector
| Title | Measurement of inclusive f1(1285) and f1(1420) production in Z decays with the DELPHI detector |
| Abstract |
DELPHI results are presented on the inclusive production of two (K(K) over bar π)(0) states in the mass region 1.2-1.6 GeV/c(2) in hadronic Z decays at LEP I. The measured masses (widths) are 1274 +/- 6 MeV/c(2) (29 +/- 12 MeV/c(2)) and 1426 +/- 6 MeV/c(2) (51 +/- 14 MeV/c(2)), respectively. A partial-wave analysis of the (K(K) over bar π)(0) system shows that the first peak is consistent with the I-G (J(PC)) = 0(+)(1(++))/(0(-+))a(0)(980)pi and the second with the I-G (J(PC)) = 0(+)(1(++))K*(892)(K) over bar + c.c. assignments. The total hadronic production rates per hadronic Z decay are (0.165 +/- 0.051) and (0.056 +/- 0.012), respectively. These measurements are consistent with the two states being the f(1) (1285) and f(1) (1420) mesons. (C) 2003 Published by Elsevier B.V. |
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| Doi | 10.1016/j.physletb.2003.07.032 |
| Publication Date | Sep 2003 |
| Publication Type | Article |
| Researcher | David Rodríguez González |
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