Measurement of gamma(phi ->eta 'gamma)/gamma(phi ->eta gamma) and the pseudoscalar mixing angle
文献类型：期刊论文
| 作者 | Aloisio, A; Ambrosino, F; Antonelli, A; Antonelli, M; Bacci, C; Bencivenni, G; Bertolucci, S; Bini, C; Bloise, C; Bocci, V |
| 刊名 | Physics letters b
 |
| 出版日期 | 2002-08-08 |
| 卷号 | 541期号:1-2页码:45-51 |
| 关键词 | E(+)e(-) collisions Phi radiative decays Pseudoscalar mixing angle |
| ISSN号 | 0370-2693 |
| 通讯作者 | Ambrosino, f() |
| 英文摘要 | We have measured the radiative decays phi --> etagamma, phi --> eta'gamma selecting pi(+)pi(-)gammagammagamma final state in a sample of similar to 5 x 10(7) phi-mesons produced at the frascati phi-factory daphine. we obtain gamma(phi --> eta'gamma)/gamma(phi --> etagamma) = (4.70 +/- 0.47 +/- 0.31) x 10(-3). from this result we derive new accurate values for the branching ratio br(phi --> eta'gamma) = (6.10 +/- 0.61 +/- 0.43) x 10(-5) and the mixing angle of pseudoscalar mesons in the flavour basis phi(p) = (41.8(-1.6)(+1.9))degrees. (c) 2002 elsevier science b.v. all rights reserved. |
| WOS关键词 | PHENOMENOLOGICAL EVIDENCE ; B-DECAYS ; ETA' ; MESONS ; PHI->ETA'GAMMA ; CMD-2 |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000177500700007 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2176361 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Ambrosino, F |
| 作者单位 | 1.Univ Naples Federico II, Dipartimento Sci Fis, Naples, Italy 2.Ist Nazl Fis Nucl, I-80125 Naples, Italy 3.Univ Bari, Dipartimento Fis, Bari, Italy 4.Ist Nazl Fis Nucl, I-70126 Bari, Italy 5.Univ Virginia, Dept Phys, Charlottesville, VA 22903 USA 6.Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy 7.Univ Karlsruhe, Inst Expt Kernphys, Karlsruhe, Germany 8.Univ Lecce, Dipartimento Fis, I-73100 Lecce, Italy 9.Ist Nazl Fis Nucl, I-73100 Lecce, Italy 10.Univ Roma La Sapienza, Dipartimento Energet, Rome, Italy |
| 推荐引用方式 GB/T 7714 | Aloisio, A,Ambrosino, F,Antonelli, A,et al. Measurement of gamma(phi ->eta 'gamma)/gamma(phi ->eta gamma) and the pseudoscalar mixing angle[J]. Physics letters b,2002,541(1-2):45-51. |
| APA | Aloisio, A.,Ambrosino, F.,Antonelli, A.,Antonelli, M.,Bacci, C.,...&Yu, Y.(2002).Measurement of gamma(phi ->eta 'gamma)/gamma(phi ->eta gamma) and the pseudoscalar mixing angle.Physics letters b,541(1-2),45-51. |
| MLA | Aloisio, A,et al."Measurement of gamma(phi ->eta 'gamma)/gamma(phi ->eta gamma) and the pseudoscalar mixing angle".Physics letters b 541.1-2(2002):45-51. |
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