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arXiv 1703.09986hep-ex
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在sqrt(s)= 13 TeV质子-质子碰撞中寻找具有双喷射角分布的新物理

Search for new physics with dijet angular distributions in proton-proton collisions at sqrt(s) = 13 TeV

CMS Collaboration

摘要:

在sqrt(s)= 13 TeV的质子-质子碰撞中测量双喷流角分布时,寻找额外的空间维、量子黑洞和夸克接触相互作用.这些数据是在大型强子对撞机上用CMS探测器收集的,对应的积分亮度为2.6毫微微电子能的倒数。的分布被发现与微扰量子色动力学,包括电弱修正的预测。不同的接触相互作用模型的限制,在一个基准模型中获得,有效的次领先阶QCD,其中只有左手夸克参与,夸克接触相互作用被排除到11.5或14.7 TeV的规模相消或相长干涉,分别。量子黑洞的产生被排除在质量低于7.8或5.3 TeV,这取决于模型。在额外空间维度的Arkani-Hamed-Dimopoulos-Dvali模型中,虚引力子交换尺度的下限在7.9-11.2 TeV的范围内,并且是最严格的限制。

英文摘要:

A search is presented for extra spatial dimensions, quantum black holes, and quark contact interactions in measurements of dijet angular distributions in proton-proton collisions at sqrt(s) = 13 TeV. The data were collected with the CMS detector at the LHC and correspond to an integrated luminosity of 2.6 inverse femtobarns. The distributions are found to be in agreement with predictions from perturbative quantum chromodynamics that include electroweak corrections. Limits for different contact interaction models are obtained in a benchmark model, valid to next-to-leading order in QCD, in which only left-handed quarks participate, quark contact interactions are excluded up to a scale of 11.5 or 14.7 TeV for destructive or constructive interference, respectively. The production of quantum black holes is excluded for masses below 7.8 or 5.3 TeV, depending on the model. The lower limits for the scales of virtual graviton exchange in the Arkani-Hamed--Dimopoulos--Dvali model of extra spatial dimensions are in the range 7.9-11.2 TeV, and are the most stringent set of limits available.

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