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Observation of chi(c2) -> eta 'eta ' and chi(c0,2) -> eta eta '

文献类型:期刊论文

AuthorAblikim, M.1; Achasov, M. N.9,70; Ahmed, S.14; Albrecht, M.4; Amoroso, A.60,62; An, F. F.1; An, Q.43,44,57; Bai, J. Z.1; Bai, Y.42; Bakina, O.27
SourcePhysical review d
Issued Date2017-12-18
Volume96Issue:11Pages:8
ISSN2470-0010
DOI10.1103/physrevd.96.112006
Corresponding AuthorZheng, b.(zhengbo_usc@163.com)
English AbstractUsing a sample of 448.1 x 10(6) psi(3686) events collected with the besiii detector in 2009 and 2012, we study the decays chi(c0,2) -> eta 'eta ' and eta eta '. the decays chi(c2) -> eta 'eta ', chi(c0) -> eta eta ' and chi(c2) -> eta eta ' are observed for the first time with statistical significances of 9.6 sigma, 13.4 sigma and 7.5 sigma, respectively. the branching fractions are determined to be b(chi(c0) -> eta 'eta ') = (2.19 +/- 0.03 +/- 0.14) x 10(-3), b(chi(c2) -> eta 'eta ') = (4.76 +/- 0.56 +/- 0.38) x 10(-5), b(chi(c0) -> eta eta ') = (8.92 +/- 0.84 +/- 0.65) x 10(-5) and b(chi(c2) -> eta eta ') = (2.27 +/- 0.43 +/- 0.25) x 10(-5), where the first uncertainties are statistical and the second are systematic. the precision for the measurement of b(chi(c0) -> eta 'eta ') thorn is significantly improved compared to previous measurements. based on the measured branching fractions, the role played by the doubly and singly okubo-zweig-iizuka disconnected transition amplitudes for chi(c0,2) decays into pseudoscalar meson pairs can be clarified.
WOS KeywordDECAY
WOS Research AreaAstronomy & Astrophysics ; Physics
WOS SubjectAstronomy & Astrophysics ; Physics, Particles & Fields
Language英语
WOS IDWOS:000418202000001
PublisherAMER PHYSICAL SOC
URIhttp://www.irgrid.ac.cn/handle/1471x/2178273
Collection高能物理研究所
Corresponding AuthorZheng, B.
Affiliation1.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, Hubei, Peoples R China
7.China Ctr Adv Sci & Technol, Beijing 100190, Peoples R China
8.COMSATS Inst Informat Technol, Def Rd,Raiwind Rd, Lahore 54000, Pakistan
9.GI Budker Inst Nucl Phys SB RAS BINP, Novosibirsk 630090, Russia
10.GSI Helmholtz Ctr Heavy Ion Res GmbH, D-64291 Darmstadt, Germany
Recommended Citation
GB/T 7714
Ablikim, M.,Achasov, M. N.,Ahmed, S.,et al. Observation of chi(c2) -> eta 'eta ' and chi(c0,2) -> eta eta '[J]. Physical review d,2017,96(11):8.
APA Ablikim, M..,Achasov, M. N..,Ahmed, S..,Albrecht, M..,Amoroso, A..,...&Zou, J. H..(2017).Observation of chi(c2) -> eta 'eta ' and chi(c0,2) -> eta eta '.Physical review d,96(11),8.
MLA Ablikim, M.,et al."Observation of chi(c2) -> eta 'eta ' and chi(c0,2) -> eta eta '".Physical review d 96.11(2017):8.

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