Study of eta and dipion transitions in gamma(4s) decays to lower bottomonia
文献类型：期刊论文
| 作者 | Guido, E.26; Mussa, R.26; Tamponi, U.26,78; Adachi, I.10,14; Aihara, H.75; Al Said, S.33,69; Asner, D. M.60; Aulchenko, V.3,58; Aushev, T.48; Ayad, R.69 |
| 刊名 | Physical review d
 |
| 出版日期 | 2017-09-28 |
| 卷号 | 96期号:5页码:11 |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/physrevd.96.052005 |
| 通讯作者 | Guido, e.() |
| 英文摘要 | We study hadronic transitions between bottomonium states using 496 fb(-1) data collected at the gamma(4s) resonance with the belle detector at the kekb asymmetric energy e(+)e(-) collider. we measure: b(gamma(4s) -> pi(+)pi(-)gamma(1s)) = (8.2 +/- 0.5(stat.)+/- 0.4(syst.)) x 10(-5), b(gamma(4s) -> pi(+)pi(-)gamma(2s)) = (7.9 +/- 1.0(stat.)+/- 0.4(syst.)) x 10(-5), and b(gamma(4s) -> eta gamma(1s)) = (1.70 +/- 0.23(stat.) +/- 0.08(syst.)) x 10(-4). we measure the ratio of branching fractions r=b(gamma(4s) -> eta gamma(1s))/b(gamma(4s) -> pi(+)pi(-)gamma(1s)) = 2.07 +/- 0.30(stat.)+/- 0.11(syst.). we search for the decay gamma(1(3)d(1,2)) -> eta gamma(1s), but do not find significant evidence for such a transition. we also measure the initial state radiation production cross sections of the gamma(2s,3s) resonances and we find values compatible with the expected ones. finally, the analysis of the gamma(4s) -> pi(+)pi(-)gamma(1s) events shows indications for a resonant contribution due to the f(0)(980) meson. |
| WOS关键词 | BELLE ; IDENTIFICATION ; KEKB |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| WOS类目 | Astronomy & Astrophysics ; Physics, Particles & Fields |
| 语种 | 英语 |
| 出版者 | AMER PHYSICAL SOC |
| WOS记录号 | WOS:000411988800003 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2177119 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Guido, E. |
| 作者单位 | 1.Univ Basque Country UPV EHU, Bilbao 48080, Spain 2.Beihang Univ, Beijing 100191, Peoples R China 3.Budker Inst Nucl Phys SB RAS, Novosibirsk 630090, Russia 4.Charles Univ Prague, Fac Math & Phys, CR-12116 Prague, Czech Republic 5.Chonnam Natl Univ, Kwangju 660701, South Korea 6.Univ Cincinnati, Cincinnati, OH 45221 USA 7.DESY, D-22607 Hamburg, Germany 8.Univ Florida, Gainesville, FL 32611 USA 9.Justus Liebig Univ Giessen, D-35392 Giessen, Germany 10.SOKENDAI, Hayama 2400193, Japan |
| 推荐引用方式 GB/T 7714 | Guido, E.,Mussa, R.,Tamponi, U.,et al. Study of eta and dipion transitions in gamma(4s) decays to lower bottomonia[J]. Physical review d,2017,96(5):11. |
| APA | Guido, E..,Mussa, R..,Tamponi, U..,Adachi, I..,Aihara, H..,...&Zupanc, A..(2017).Study of eta and dipion transitions in gamma(4s) decays to lower bottomonia.Physical review d,96(5),11. |
| MLA | Guido, E.,et al."Study of eta and dipion transitions in gamma(4s) decays to lower bottomonia".Physical review d 96.5(2017):11. |
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