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	Dark photon search in the mass range between 1.5 and 3.4 gev/c
	Ablikim, M.1; Achasov, M. N.9,65; Ai, X. C.1; Albayrak, O.5; Albrecht, M.4; Ambrose, D. J.49; Amoroso, A.27,53,55; An, F. F.1; An, Q.50,60; Bai, J. Z.1
刊名	Physics letters b
	2017-11-10
卷号	774页码:252-257
关键词	Dark photon search Initial state radiation Besiii
ISSN号	0370-2693
通讯作者	Guo, y. p.(guo@uni-mainz.de)
英文摘要	Using a data set of 2.93 fb taken at a center-of-mass energy root s = 3.773 gev with the besiii detector at the bepcii collider, we perform a search for an extra u(1) gauge boson, also denoted as a dark photon. we examine the initial state radiation reactions e(+)e(-) -> e(+)e(-) gamma(isr) and e(+)e(-) -> mu(+)mu(-) gamma(isr) for this search, where the dark photon would appear as an enhancement in the invariant mass distribution of the leptonic pairs. we observe no obvious enhancement in the mass range between 1.5 and 3.4 gev/c(2) and set a 90% confidence level upper limit on the mixing strength of the dark photon and the standard model photon. we obtain a competitive limit in the tested mass range. (c) 2017 the author(s). published by elsevier b.v.
WOS关键词	ELECTRON-BEAM-DUMP ; KLOE EXPERIMENT ; VECTOR BOSON ; FLAVOR FACTORIES ; CROSS-SECTION ; U-GAMMA ; E(+)E(-) ; DECAYS ; PI(0) ; LIMIT
WOS研究方向	Astronomy & Astrophysics ; Physics
WOS类目	Astronomy & Astrophysics ; Physics, Nuclear ; Physics, Particles & Fields
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000414973200037
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2178281
专题	高能物理研究所
通讯作者	Guo, Y. P.
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, 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.SB RAS BINP, GI Budker Inst Nucl Phys, Novosibirsk 630090, Russia 10.GSI Helmholtz Ctr 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. Dark photon search in the mass range between 1.5 and 3.4 gev/c[J]. Physics letters b,2017,774:252-257.
APA	Ablikim, M..,Achasov, M. N..,Ai, X. C..,Albayrak, O..,Albrecht, M..,...&Zou, J. H..(2017).Dark photon search in the mass range between 1.5 and 3.4 gev/c.Physics letters b,774,252-257.
MLA	Ablikim, M.,et al."Dark photon search in the mass range between 1.5 and 3.4 gev/c".Physics letters b 774(2017):252-257.

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