Search for new physics in same-sign dilepton events in proton–proton collisions at $$sqrt{s} = 13, ext {TeV} $$s=13TeV
Search for new physics in same-sign dilepton events in proton–proton collisions at $$sqrt{s} = 13, ext {TeV} $$s=13TeV
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在 $$sqrt{s} = 13, ext {TeV} $$s=13TeV 质子-质子碰撞中的同号双轻子事件中搜索新物理
DOI：
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Cms Collaboration
中科院分区：
文献类型：
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作者：
Cms Collaboration
使用具有两个孤立的同号轻子、两个或更多喷流和丢失横向动量的事件来进行新物理学的搜索。结果是基于大型强子对撞机的CMS探测器记录的质心能量为13$$，ext{TeV}$TeV的质子-质子碰撞的样本，对应的积分光度为2.3×$$mathm{fb}^{1}$fb1。通过根据丢失的横向动量、喷流横向动量的标量和、与候选玻色子相关的横向质量、喷注数量、夸克喷注数量和轻子的横向动量对事件进行分类，定义了多个搜索区域。该分析对标准模型以外的各种可能信号很敏感。没有观察到超出标准模型背景期望值的情况。在各种超对称模型上设置了约束，在95%的置信度水平下，分别排除了质量高达1300和680$$，Ext{GeV}$$GeV的胶子和底夸克。给出了两个顶夸克-反夸克对(119$$，EXT{FB}$$FB)和两个同号顶夸克(1.7$$，EXT{PB}$PB)产生的截面上限。提供了选择效率和模型独立限制，以允许对结果进行进一步解释。
A search for new physics is performed using events with two isolated same-sign leptons, two or more jets, and missing transverse momentum. The results are based on a sample of proton–proton collisions at a center-of-mass energy of 13$$, ext {TeV}$$TeV recorded with the CMS detector at the LHC, corresponding to an integrated luminosity of 2.3 $$mathrm{fb}^{1}$$fb1. Multiple search regions are defined by classifying events in terms of missing transverse momentum, the scalar sum of jet transverse momenta, the transverse mass associated with a $$mathrm {W}$$W boson candidate, the number of jets, the number of $$mathrm{b} $$b quark jets, and the transverse momenta of the leptons in the event. The analysis is sensitive to a wide variety of possible signals beyond the standard model. No excess above the standard model background expectation is observed. Constraints are set on various supersymmetric models, with gluinos and bottom squarks excluded for masses up to 1300 and 680$$, ext {GeV}$$GeV, respectively, at the 95 % confidence level. Upper limits on the cross sections for the production of two top quark-antiquark pairs (119$$, ext {fb}$$fb) and two same-sign top quarks (1.7$$, ext {pb}$$pb) are also obtained. Selection efficiencies and model independent limits are provided to allow further interpretations of the results.
CMS 的性能在 pp 数据中缺少横向动量重建，as = 8 TeV
影响因子：
1.3
作者：
CMS Collaboration;Khachatryan;Vardan;others;(GRK 1694: D. Haitz)
通讯作者：
(GRK 1694: D. Haitz)
影响因子：
1.3
作者：
Chatrchyan, S.;Khachatryan, V.;Weinberg, M.
通讯作者：
Weinberg, M.
影响因子：
5.4
作者：
Ball, Richard D.;Bertone, Valerio;Ubiali, Maria
通讯作者：
Ubiali, Maria