A global fit to determine the pseudoscalar mixing angle and the gluonium content of the eta ' meson
文献类型：期刊论文
| 作者 | Ambrosino, F.4,5; Antonelli, A.2; Antonelli, M.2; Archilli, F.9,10; Beltrame, P.3; Bencivenni, G.2; Bertolucci, S.2; Bini, C.7,8; Bloise, C.2; Bocchetta, S.1,11 |
| 刊名 | Journal of high energy physics
 |
| 出版日期 | 2009-07-01 |
| 期号 | 7页码:15 |
| 关键词 | Phenomenological models |
| ISSN号 | 1029-8479 |
| DOI | 10.1088/1126-6708/2009/07/105 |
| 通讯作者 | Di micco, b.(dimicco@fis.uniroma3.it) |
| 英文摘要 | We update the values of the eta-eta' mixing angle and of the eta' gluonium content by fitting our measurement r-phi = br(phi -> eta gamma)/br(phi -> eta gamma) together with several vector meson radiative decays to pseudoscalars (v -> p gamma), pseudoscalar mesons radiative decays to vectors (p -> v gamma) and the eta' -> gamma gamma, pi(0) -> gamma gamma widths. from the fit we extract a gluonium fraction of z(g)(2) = 0.12 +/- 0.04, the pseudoscalar mixing angle psi(p) = (40.4 +/- 0.6)degrees and the phi - omega mixing angle psi(v) = (3.32 +/- 0.09)degrees. z(g)(2) and psi(p) are fairly consistent with those previously published. we also evaluate the impact on the eta' gluonium content determination of future experimental improvements of the eta' branching ratios and decay width. |
| WOS关键词 | PARTICLE PHYSICS ; KLOE DETECTOR |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Particles & Fields |
| 语种 | 英语 |
| WOS记录号 | WOS:000270219900105 |
| 出版者 | SPRINGER |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2175940 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Di Micco, B. |
| 作者单位 | 1.Univ Roma Tre, Dipartimento Fis, Rome, Italy 2.Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy 3.Johannes Gutenberg Univ Mainz, Inst Kernphys, D-6500 Mainz, Germany 4.Univ Naples Federico II, Dipartimento Sci Fisiche, Naples, Italy 5.Ist Nazl Fis Nucl, Sez Napoli, I-80125 Naples, Italy 6.Univ Roma La Sapienza, Dipartimento Energet, Rome, Italy 7.Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy 8.Ist Nazl Fis Nucl, Sez Roma, Rome, Italy 9.Univ Tor Vergata, Dipartimento Fis, Rome, Italy 10.Ist Nazl Fis Nucl, Sez Roma Tor Vergata, Rome, Italy |
| 推荐引用方式 GB/T 7714 | Ambrosino, F.,Antonelli, A.,Antonelli, M.,et al. A global fit to determine the pseudoscalar mixing angle and the gluonium content of the eta ' meson[J]. Journal of high energy physics,2009(7):15. |
| APA | Ambrosino, F..,Antonelli, A..,Antonelli, M..,Archilli, F..,Beltrame, P..,...&Xu, G..(2009).A global fit to determine the pseudoscalar mixing angle and the gluonium content of the eta ' meson.Journal of high energy physics(7),15. |
| MLA | Ambrosino, F.,et al."A global fit to determine the pseudoscalar mixing angle and the gluonium content of the eta ' meson".Journal of high energy physics .7(2009):15. |
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