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arXiv 1208.5458hep-ex
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TeV =1.96时PP-棒碰撞中WW、WZ和W γ产生的三线性规范玻色子反常耦合的极限

Limits on anomalous trilinear gauge boson couplings from WW, WZ and Wgamma production in pp-bar collisions at sqrt{s}=1.96 TeV

D0 Collaboration

摘要:

我们提出了最终的搜索的异常gammaWW和ZWW三线性规范玻色子耦合WW和WZ生产轻子加dijet最终状态和组合的结果从Wgamma,WW,WZ生产轻子最终状态。分析的数据对应于高达8.6/fb的积分亮度收集的D 0检测器在pp-bar碰撞在sqrt{s}=1.96 TeV。我们设定了强子对撞机迄今为止最严格的极限,假设截止能量标度λ =2 TeV时,反常耦合参数Δ κ_γ、λ和Δ g_1 ^Z之间存在两种不同的关系。68% C. L。对于LEP参数化,极限为-0.057<Deltaκ_γ<0.154、-0.015<lambda<0.028和-0.008<Delta g_1^Z<0.054,对于等耦合参数化,极限为-0.007<Deltaκ<0.081和-0.017<lambda<0.028。我们还提出了最严格的限制W玻色子磁偶极子和电四极矩。

英文摘要:

We present final searches of the anomalous gammaWW and ZWW trilinear gauge boson couplings from WW and WZ production using lepton plus dijet final states and a combination with results from Wgamma, WW, and WZ production with leptonic final states. The analyzed data correspond to up to 8.6/fb of integrated luminosity collected by the D0 detector in pp-bar collisions at sqrt{s}=1.96 TeV. We set the most stringent limits at a hadron collider to date assuming two different relations between the anomalous coupling parameters Deltaκ_γ, lambda, and Delta g_1^Z for a cutoff energy scale Lambda=2 TeV. The combined 68% C.L. limits are -0.057<Deltaκ_γ<0.154, -0.015<lambda<0.028, and -0.008<Delta g_1^Z<0.054 for the LEP parameterization, and -0.007<Deltaκ<0.081 and -0.017<lambda<0.028 for the equal couplings parameterization. We also present the most stringent limits of the W boson magnetic dipole and electric quadrupole moments.

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