Measurement of e(+)e(-) -> pi(+)pi(-) psi(3686) from 4.008 to 4.600 gev and observation of a charged structure in the pi(+/-)psi(3686) mass spectrum
文献类型：期刊论文
| 作者 | Ablikim, M.1; Achasov, M. N.9,66; Ahmed, S.14; Ai, X. C.1; Albayrak, O.5; Albrecht, M.4; Ambrose, D. J.51; Amoroso, A.56,58; An, F. F.1; An, Q.53 |
| 刊名 | Physical review d
 |
| 出版日期 | 2017-08-31 |
| 卷号 | 96期号:3页码:13 |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/physrevd.96.032004 |
| 通讯作者 | Ablikim, m.() |
| 英文摘要 | We study the process e(+)e(-) -> p(+)p(-)psi(3686) using 5.1 fb(-1) of data collected at 16 center-of-mass energy (root s) points from 4.008 to 4.600 gev by the besiii detector operating at the bepcii collider. the measured born cross sections for e(+)e(-) -> p(+)p(-)psi(3686) are consistent with previous results, but with much improved precision. a fit to the cross section shows contributions from two structures: the first has m = 4209.5 +/- 7.4 +/- 1.4 mev/c(2) and gamma = 80.1 +/- 24.6 +/- 2.9 mev, and the second has m = 4383.8 +/- 4.2 +/- 0.8 mev/c(2) and gamma = 84.2 +/- 12.5 +/- 2.1 mev, where the first errors are statistical and the second systematic. the lower-mass resonance is observed in the process e(+)e(-) -> p(+)p(-)psi(3686) for the first time with a statistical significance of 5.8 sigma. a charged charmoniumlike structure is observed in the pi(+/-)psi(3686) invariant mass spectrum for data at root s = 4.416 gev. a fit with an s-wave breit-wigner function yields a mass m = 4032.1 +/- 2.4 mev/c(2), where the errors are statistical only. however, there are still unresolved discrepancies between the fit model and data. the width of the intermediate state varies in a wide range for different kinematic regions within the data set. therefore, no simple interpretation of the data has been found, and a future data sample with larger statistics and more theoretical input will be required to better understand this issue. |
| WOS关键词 | PI-PI ; RADIATIVE-CORRECTIONS ; CHARMONIUM ; UPSILON ; ENERGY |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| WOS类目 | Astronomy & Astrophysics ; Physics, Particles & Fields |
| 语种 | 英语 |
| WOS记录号 | WOS:000408704400002 |
| 出版者 | AMER PHYSICAL SOC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2177016 |
| 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.Ruhr Univ Bochum, D-44780 Bochum, Germany 5.Carnegie Mellon Univ, Pittsburgh, PA 15213 USA 6.Cent China Normal Univ, Wuhan 430079, Hubei, 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 Helmholtzctr Heavy Ion Res GmbH, D-64291 Darmstadt, Germany |
| 推荐引用方式 GB/T 7714 | Ablikim, M.,Achasov, M. N.,Ahmed, S.,et al. Measurement of e(+)e(-) -> pi(+)pi(-) psi(3686) from 4.008 to 4.600 gev and observation of a charged structure in the pi(+/-)psi(3686) mass spectrum[J]. Physical review d,2017,96(3):13. |
| APA | Ablikim, M..,Achasov, M. N..,Ahmed, S..,Ai, X. C..,Albayrak, O..,...&Zou, J. H..(2017).Measurement of e(+)e(-) -> pi(+)pi(-) psi(3686) from 4.008 to 4.600 gev and observation of a charged structure in the pi(+/-)psi(3686) mass spectrum.Physical review d,96(3),13. |
| MLA | Ablikim, M.,et al."Measurement of e(+)e(-) -> pi(+)pi(-) psi(3686) from 4.008 to 4.600 gev and observation of a charged structure in the pi(+/-)psi(3686) mass spectrum".Physical review d 96.3(2017):13. |
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