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Joint Institute for Nuclear Research, Dubna, Russia.
Phys Rev Lett. 2006 Sep 15;97(11):111801. doi: 10.1103/PhysRevLett.97.111801.
We present a search for supersymmetry in the R-parity violating resonant production and decay of smuons and muon sneutrinos in the channels mu-->chi(1)(0)mu, mu-->chi(2,3,4)(0)mu, and nu(mu)-->chi(1,2)(+/-)mu. We analyzed 0.38 fb(-1) of integrated luminosity collected between April 2002 and August 2004 with the D0 detector at the Fermilab Tevatron Collider. The observed number of events is in agreement with the standard model expectation, and we calculate 95% C.L. limits on the slepton production cross section times branching fraction to gaugino plus muon, as a function of slepton and gaugino masses. In the framework of minimal supergravity, we set limits on the coupling parameter lambda(211)('), extending significantly previous results obtained in Run I of the Tevatron and at the CERN LEP collider.
我们展示了在R宇称破坏的过程中，通过μ→χ(1)(0)μ、μ→χ(2,3,4)(0)μ以及ν(μ)→χ(1,2)(±)μ等通道，对超对称μ子和μ子中微子的共振产生和衰变进行的搜索。我们分析了2002年4月至2004年8月期间在费米实验室Tevatron对撞机上使用D0探测器收集的0.38 fb(-1)的积分亮度。观测到的事件数量与标准模型预期相符，并且我们计算了作为轻子和超对称规范玻色子质量函数的轻子产生截面乘以到超对称规范玻色子加μ子的分支比的95%置信水平限制。在最小超引力框架下，我们对耦合参数λ(211)'设置了限制，显著扩展了之前在Tevatron Run I以及欧洲核子研究中心LEP对撞机上获得的结果。
