中国科学院机构知识库网格系统: Measurement of the matrix elements for the decays eta' -> eta pi(+) pi(-) and eta' -> eta pi(0)pi(0)

Measurement of the matrix elements for the decays eta' -> eta pi(+) pi(-) and eta' -> eta pi(0)pi(0)

文献类型：期刊论文


作者	Ablikim, M.1; Achasov, M. N.9,69; Ahmed, S.13; Albrecht, M.4; Amoroso, A.4,23,58,60; An, F. F.1; An, Q.42,55; Bai, J. Z.1; Bai, Y.41; Bakina, O.26
刊名	Physical review d
出版日期	2018-01-10
卷号	97 期号:1 页码:11
ISSN号	2470-0010
DOI	10.1103/physrevd.97.012003
通讯作者	Kang, x. l.(kangxl@ihep.ac.cn)
英文摘要	Based on a sample of 1.31 x 10(9) j/psi events collected with the besiii detector, the matrix elements for the decays eta' -> eta pi(+) pi(-) and eta' -> eta pi(0)pi(0) are determined using 351,016 eta' -> (eta -> gamma gamma)pi' pi(-) and 56,249 eta' -> (eta -> gamma gamma)pi(0) pi(0) events with background levels less than 1%. two commonly used representations are used to describe the dalitz plot density. we find that an assumption of a linear amplitude does not describe the data well. a small deviation of the obtained matrix elements between eta' -> eta pi(+) pi(-) and eta' -> eta pi(0)pi(0) is probably caused by the mass difference between charged and neutral pions or radiative corrections. no cusp structure in eta' -> eta pi(0)pi(0) is observed.
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:000419711200002
URI标识	http://www.irgrid.ac.cn/handle/1471x/2178249
专题	高能物理研究所
通讯作者	Kang, X. L.
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, Peoples R China 7.China Ctr Adv Sci & Technol, Beijing 100190, Peoples R China 8.COMSATS Inst Informat Technol, Def Rd,Raiwind Rd, Lahore, Pakistan 9.SB RAS BINP, GI Budker Inst Nucl Phys, 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.,Ahmed, S.,et al. Measurement of the matrix elements for the decays eta' -> eta pi(+) pi(-) and eta' -> eta pi(0)pi(0)[J]. Physical review d,2018,97(1):11.
APA	Ablikim, M..,Achasov, M. N..,Ahmed, S..,Albrecht, M..,Amoroso, A..,...&Zou, J. H..(2018).Measurement of the matrix elements for the decays eta' -> eta pi(+) pi(-) and eta' -> eta pi(0)pi(0).Physical review d,97(1),11.
MLA	Ablikim, M.,et al."Measurement of the matrix elements for the decays eta' -> eta pi(+) pi(-) and eta' -> eta pi(0)pi(0)".Physical review d 97.1(2018):11.

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Measurement of the matrix elements for the decays eta' -> eta pi(+) pi(-) and eta' -> eta pi(0)pi(0)

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