Search for pair production of a heavy up-type quark decaying to a W boson and a b quark in the lepton + jets channel with the ATLAS detector.
Search for pair production of a heavy up-type quark decaying to a W boson and a b quark in the lepton + jets channel with the ATLAS detector.
复制标题
使用 ATLAS 探测器寻找轻子喷流通道中重上型夸克衰变成 W 玻色子和 b 夸克的配对产生。
DOI：
10.1103/physrevlett.108.261802
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发表时间：
2012
影响因子：
8.6
通讯作者：
Aad G
中科院分区：
文献类型：
--
作者：
Aad G
假设随后衰变为一个W玻色子和一个b夸克，t'(t) / bar' -> W(+)bW(-)(b) / bar，提出了一种寻找重上型夸克（t'）及其反粒子产生的方法。这项研究是基于欧洲核子研究中心大型强子对撞机上的ATLAS探测器收集到的1.04 fb（-1）的质子-质子碰撞（根s = 7 TeV）。在轻子+射流的最终状态下分析数据，其特征是高横向动量孤立电子或介子，高缺失横向动量，至少有三个射流。没有观察到明显超出背景期望的事件。对于t'夸克的质量，设定了95% C.L.的下限为404 GeV。
A search is presented for production of a heavy up-type quark (t') together with its antiparticle, assuming subsequent decay to a W boson and a b quark, t'(t) over bar' -> W(+)bW(-)(b) over bar. The search is based on 1.04 fb(-1) of proton-proton collisions at root s = 7 TeV collected by the ATLAS detector at the CERN Large Hadron Collider. Data are analyzed in the lepton + jets final state, characterized by a high transverse momentum isolated electron or muon, high missing transverse momentum, and at least three jets. No significant excess of events above the background expectation is observed. A 95% C.L. lower limit of 404 GeV is set for the mass of the t' quark.