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arXiv 1404.7772hep-ex
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用KLOE实验寻找$e^+e^- \rightarrow μ^+ μ^- γ$相互作用中的光矢量玻色子产生

Search for light vector boson production in $e^+e^- \rightarrow μ^+ μ^- γ$ interactions with the KLOE experiment

D. Babusci, I. Balwierz-Pytko, G. Bencivenni, C. Bloise, F. Bossi, P. Branchini, A. Budano, L. Caldeira Balkeståhl, F. Ceradini, P. Ciambrone, F. Curciarello, E… 展开作者

D. Babusci, I. Balwierz-Pytko, G. Bencivenni, C. Bloise, F. Bossi, P. Branchini, A. Budano, L. Caldeira Balkeståhl, F. Ceradini, P. Ciambrone, F. Curciarello, E. Czerwinski, E. Danè, V. De Leo, E. De Lucia, G. De Robertis, A. De Santis, P. De Simone, A. Di Cicco, A. Di Domenico, R. Di Salvo, D. Domenici, O. Erriquez, G. Fanizzi, A. Fantini, G. Felici, S. Fiore, P. Franzini, A. Gajos, P. Gauzzi, G. Giardina, S. Giovannella, E. Graziani, F. Happacher, L. Heijkenskjold, B. Hoistad, T. Johansson, K. Kacprzak, D. Kaminska, W. Krzemien, A. Kupsc, J. Lee-Franzini, F. Loddo, S. Loffredo, G. Mandaglio, M. Martemianov, M. Martini, M. Mascolo, R. Messi, S. Miscetti, G. Morello, D. Moricciani, P. Moskal, F. Nguyen, A. Palladino, A. Passeri, V. Patera, I. Prado Longhi, A. Ranieri, P. Santangelo, I. Sarra, M. Schioppa, B. Sciascia, M. Silarski, L. Tortora, G. Venanzoni, W. Wislicki, M. Wolke, J. Zdebik

摘要:

我们已经搜索了一个光矢量玻色子$U$,一个“暗力量”的可能载体,与KLOE探测器在DA $Φ$ NE \epm \对撞机,由天体物理学证据的动机暗物质在宇宙中的存在。使用\epm \碰撞收集与$239.3$ ~pb $^{-1}$的积分光度,我们寻找在反应\epm \to $μ^+ μ^-$ \gam,对应于衰变$U\toμ^+μ^-$的双μ子质量峰。我们没有发现$U$矢量玻色子信号的证据。对于质量区域为$520<m_{\rm U}<980$ MeV的光子和$U$玻色子之间的混合参数平方,我们设置了90\% CL上限,即1.6 $\times$ 10 $^{-5}$到8.6 $\times$ 10 $^{-7}$。

英文摘要:

We have searched for a light vector boson $U$, the possible carrier of a "dark force", with the KLOE detector at the DA$Φ$NE \epm\ collider, motivated by astrophysical evidence for the presence of dark matter in the universe. Using \epm\ collisions collected with an integrated luminosity of $239.3$~pb$^{-1}$, we look for a dimuon mass peak in the reaction \epm\to$μ^+ μ^-$\gam, corresponding to the decay $U\toμ^+μ^-$. We find no evidence for a $U$ vector boson signal. We set a 90\% CL upper limit for the mixing parameter squared between the photon and the $U$ boson of 1.6$\times$10$^{-5}$ to 8.6$\times$10$^{-7}$ for the mass region $520<m_{\rm U}<980$ MeV.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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