Determination of the spin and parity of the z(c)(3900)
文献类型：期刊论文
| 作者 | Ablikim, M.1; Achasov, M. N.9,68; Ai, X. C.1; Albayrak, O.5; Albrecht, M.4; Ambrose, D. J.50; Amoroso, A.55,57; An, F. F.1; An, Q.52,62,63; Bai, J. Z.1 |
| 刊名 | Physical review letters
 |
| 出版日期 | 2017-08-16 |
| 卷号 | 119期号:7页码:7 |
| ISSN号 | 0031-9007 |
| DOI | 10.1103/physrevlett.119.072001 |
| 通讯作者 | Ablikim, m.() |
| 英文摘要 | The spin and parity of the z(c)(3900)(+/-) state are determined to be j(p) = 1(+) with a statistical significance larger than 7 sigma over other quantum numbers in a partial wave analysis of the process e(+)e(-) -> pi(+)pi(-) j/psi we use a data sample of 1.92 fb(-1) accumulated at root s = 4.23 and 4.26 gev with the besiii experiment. when parametrizing the z(c)(3900)(+/-) with a flatte-like formula, we determine its pole mass m-pole = (3881.2 +/- 4.2(stat) +/- 52.7(syst)) mev/c(2) and pole width gamma(pole) = (51.8 +/- 4.6(stat) +/- 36.0(syst)) mev. we also measure cross sections for the process e(+)e(-) -> z(c)(3900)(+)pi(-) + c.c. -> j/psi pi(+)pi(-) and determine an upper limit at the 90% confidence level for the process e(+)e(-) -> z(c)(4020)(+)pi(-) + c.c. -> j/psi pi(+)pi(-). |
| WOS关键词 | RESONANCE ; DECAY ; SIGMA |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000407719400001 |
| 出版者 | AMER PHYSICAL SOC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2176960 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Ablikim, M. |
| 作者单位 | 1.Inst High Energy Phys, Beijing 100049, Peoples R China 2.Beihang Univ, Beijing 100191, Peoples R China 3.Beijing Inst Petrochem Technol, Beijing 102617, Peoples R China 4.Bochum Ruhr Univ, D-44780 Bochum, Germany 5.Carnegie Mellon Univ, Pittsburgh, PA 15213 USA 6.Cent China Normal Univ, Wuhan 430079, Peoples R China 7.China Ctr Adv Sci & Technol, Beijing 100190, Peoples R China 8.COMSATS Inst Informat Technol, Def Rd,Off Raiwind Rd, Lahore 54000, Pakistan 9.GI Budker Inst Nucl Phys SB RAS BINP, Novosibirsk 630090, Russia 10.GSI Helmholtzcentre Heavy Ion Res GmbH, D-64291 Darmstadt, Germany |
| 推荐引用方式 GB/T 7714 | Ablikim, M.,Achasov, M. N.,Ai, X. C.,et al. Determination of the spin and parity of the z(c)(3900)[J]. Physical review letters,2017,119(7):7. |
| APA | Ablikim, M..,Achasov, M. N..,Ai, X. C..,Albayrak, O..,Albrecht, M..,...&Zou, J. H..(2017).Determination of the spin and parity of the z(c)(3900).Physical review letters,119(7),7. |
| MLA | Ablikim, M.,et al."Determination of the spin and parity of the z(c)(3900)".Physical review letters 119.7(2017):7. |
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