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arXiv 1509.00740hep-ex
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用KLOE实验在$\mathrm{e}^{+}\mathrm{e}^{-} \to \mathrm{U}γ$、$\mathrm{U} \to \mathrm{e}^{+}\mathrm{e}^{-}$中产生低质量矢量玻色子的限制

Limit on the production of a low-mass vector boson in $\mathrm{e}^{+}\mathrm{e}^{-} \to \mathrm{U}γ$, $\mathrm{U} \to \mathrm{e}^{+}\mathrm{e}^{-}$ with the KLOE experiment

A. Anastasi, D. Babusci, G. Bencivenni, M. Berlowski, C. Bloise, F. Bossi, P. Branchini, A. Budano, L. Caldeira Balkeståhl, B. Cao, F. Ceradini, P. Ciambrone, F… 展开作者

A. Anastasi, D. Babusci, G. Bencivenni, M. Berlowski, C. Bloise, F. Bossi, P. Branchini, A. Budano, L. Caldeira Balkeståhl, B. Cao, F. Ceradini, P. Ciambrone, F. Curciarello, E. Czerwiński, G. D'Agostini, E. Danè, V. De Leo, E. De Lucia, A. De Santis, P. De Simone, A. Di Cicco, A. Di Domenico, R. Di Salvo, D. Domenici, A. D'Uffizi, A. Fantini, G. Felici, S. Fiore, A. Gajos, P. Gauzzi, G. Giardina, S. Giovannella, E. Graziani, F. Happacher, L. Heijkenskjöld, W. Ikegami Andersson, T. Johansson, D. Kamińska, W. Krzemien, A. Kupsc, S. Loffredo, G. Mandaglio, M. Martini, M. Mascolo, R. Messi, S. Miscetti, G. Morello, D. Moricciani, P. Moskal, A. Palladino, M. Papenbrock, A. Passeri, V. Patera, E. Perez del Rio, A. Ranieri, P. Santangelo, I. Sarra, M. Schioppa, M. Silarski, F. Sirghi, L. Tortora, G. Venanzoni, W. Wiślicki, M. Wolke

摘要:

在标准模型之外存在一种新的力是令人信服的,因为它可以解释几个令人震惊的天体物理学观测,而这些观测无法通过标准解释。我们在DA $Φ$ NE $\mathrm{e}^{+}\mathrm{e}^{-}$对撞机上用KLOE探测器寻找这种暗力的光矢量介质--$\mathrm{U}$玻色子。利用积分光度为1.54 fb的$^{-1}$,我们研究了过程$\mathrm{e}^{+}\mathrm{e}^{-} \to \mathrm{U}γ$,用$\mathrm{U} \to \mathrm{e}^{+}\mathrm{e}^{-}$,利用辐射返回在双电子不变质量分布中寻找共振峰。我们没有发现信号的证据,并将标准模型光子和暗光子$\varepsilon^2$之间的混合强度设定为90% CL上限,在5- 520 MeV/c $^2$质量范围内的$10^{-6}$ -$10^{-4}$。

英文摘要:

The existence of a new force beyond the Standard Model is compelling because it could explain several striking astrophysical observations which fail standard interpretations. We searched for the light vector mediator of this dark force, the $\mathrm{U}$ boson, with the KLOE detector at the DA$Φ$NE $\mathrm{e}^{+}\mathrm{e}^{-}$ collider. Using an integrated luminosity of 1.54 fb$^{-1}$, we studied the process $\mathrm{e}^{+}\mathrm{e}^{-} \to \mathrm{U}γ$, with $\mathrm{U} \to \mathrm{e}^{+}\mathrm{e}^{-}$, using radiative-return to search for a resonant peak in the dielectron invariant-mass distribution. We did not find evidence for a signal, and set a 90\%~CL upper limit on the mixing strength between the Standard Model photon and the dark photon, $\varepsilon^2$, at $10^{-6}$--$10^{-4}$ in the 5--520~MeV/c$^2$ mass range.

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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