Daniele Alves, Nima Arkani-Hamed, Sanjay Arora, Yang Bai, Matthew Baumgart, Joshua Berger, Matthew Buckley, Bart Butler, Spencer Chang, Hsin-Chia Cheng, Cliffor… 展开作者
Daniele Alves, Nima Arkani-Hamed, Sanjay Arora, Yang Bai, Matthew Baumgart, Joshua Berger, Matthew Buckley, Bart Butler, Spencer Chang, Hsin-Chia Cheng, Clifford Cheung, R. Sekhar Chivukula, Won Sang Cho, Randy Cotta, Mariarosaria D'Alfonso, Sonia El Hedri, Rouven Essig, Jared A. Evans, Liam Fitzpatrick, Patrick Fox, Roberto Franceschini, Ayres Freitas, James S. Gainer, Yuri Gershtein, Richard Gray, Thomas Gregoire, Ben Gripaios, Jack Gunion, Tao Han, Andy Haas, Per Hansson, JoAnne Hewett, Dmitry Hits, Jay Hubisz, Eder Izaguirre, Jared Kaplan, Emanuel Katz, Can Kilic, Hyung-Do Kim, Ryuichiro Kitano, Sue Ann Koay, Pyungwon Ko, David Krohn, Eric Kuflik, Ian Lewis, Mariangela Lisanti, Tao Liu, Zhen Liu, Ran Lu, Markus Luty, Patrick Meade, David Morrissey, Stephen Mrenna, Mihoko Nojiri, Takemichi Okui, Sanjay Padhi, Michele Papucci, Michael Park, Myeonghun Park, Maxim Perelstein, Michael Peskin, Daniel Phalen, Keith Rehermann, Vikram Rentala, Tuhin Roy, Joshua T. Ruderman, Veronica Sanz, Martin Schmaltz, Stephen Schnetzer, Philip Schuster, Pedro Schwaller, Matthew D. Schwartz, Ariel Schwartzman, Jing Shao, Jessie Shelton, David Shih, Jing Shu, Daniel Silverstein, Elizabeth Simmons, Sunil Somalwar, Michael Spannowsky, Christian Spethmann, Matthew Strassler, Shufang Su, Tim Tait, Brooks Thomas, Scott Thomas, Natalia Toro, Tomer Volansky, Jay Wacker, Wolfgang Waltenberger, Itay Yavin, Felix Yu, Yue Zhao, Kathryn Zurek
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40 pages, 2 figures. This document is the official summary of results from "Topologies for Early LHC Searches" workshop (SLAC, September 2010). Supplementary material can be found at http://lhcnewphysics.org
This document proposes a collection of simplified models relevant to the design of new-physics searches at the LHC and the characterization of their results. Both ATLAS and CMS have already presented some results in terms of simplified models, and we encourage them to continue and expand this effort, which supplements both signature-based results and benchmark model interpretations. A simplified model is defined by an effective Lagrangian describing the interactions of a small number of new particles. Simplified models can equally well be described by a small number of masses and cross-sections. These parameters are directly related to collider physics observables, making simplified models a particularly effective framework for evaluating searches and a useful starting point for characterizing positive signals of new physics. This document serves as an official summary of the results from the "Topologies for Early LHC Searches" workshop, held at SLAC in September of 2010, the purpose of which was to develop a set of representative models that can be used to cover all relevant phase space in experimental searches. Particular emphasis is placed on searches relevant for the first ~50-500 pb-1 of data and those motivated by supersymmetric models. This note largely summarizes material posted at http://lhcnewphysics.org/, which includes simplified model definitions, Monte Carlo material, and supporting contacts within the theory community. We also comment on future developments that may be useful as more data is gathered and analyzed by the experiments.
Charged Slepton Flavor post the 8 TeV LHC: A Simplified Model Analysis of Low-Energy Constraints and LHC SUSY Searches
由于LHC搜索的零结果与Higgs质量一起严重限制了标准模型的最小超对称扩展，我们采用一种与模型无关的方法来研究带电slepton味.我们研究了一些简化的模型，与不同的子集slepton，电弱gauginos，和希格斯诺斯，并推导出允许slepton风味的依赖性在该地区探测目前的LHC搜索，并在该地区相关的14 TeV LHC。然后，我们研究的影响，允许的风味依赖轻子加上失踪的能量搜索。在某些情况下，风味依赖显著地修改了搜索的范围。这些效应在下一次LHC运行时可能会更大，因为对于在14 TeV探测的更高质量，更大的味道混合和相对质量分裂与低能量约束是相容的。保留完整的轻子味信息可以增加搜索的灵敏度。
在隐形超对称中，由于能量丢失被抑制，直接搜索的超伴子的边界可能比标准超对称场景明显更弱。我们提出了一套简化的隐形超对称模型，激发13 TeV LHC搜索。我们专注于自然超对称框架内的简化模型，其中的胶子，停止，希格斯诺被假定为比其他超伙伴轻。我们的简化模型表现出新的衰变模式，显着不同的拓扑结构的最小超对称标准模型，有和没有$R$-奇偶校验。我们确定停止和胶子在8 TeV LHC搜索的限制。现有的搜索构成了一个强大的探测隐形超对称胶子与某些拓扑结构。然而，我们确定的简化模型中的胶子可以大大轻于1 TeV。在隐形超对称中，停止比MSSM受到的约束要少得多，我们已经确定了新的停止衰变拓扑结构，这些拓扑结构完全不受现有LHC搜索的约束。
Status of New Physics searches with $b \to s \ell^{+}\ell^{-}$ transitions @ LHCb
重口味粒子的罕见衰变提供了一个理想的实验室，以寻找与标准模型的偏差，并探索LHC无法达到的能量状态。通过电弱企鹅图进行的衰变是寻找新物理学的极好探针，而$b \to s \ell^{+}\ell^{-}$过程特别有趣，因为它们提供了许多可观测量，如分支分数，不对称性和角度可观测量。最近从LHCb实验的结果进行了审查。
Simplified Models for Dark Matter Face their Consistent Completions
简化的暗物质模型最近被提倡作为一个强有力的工具，利用暗物质直接探测，间接探测和LHC实验探针之间的互补性。专注于赝标量介质之间的黑暗和可见的部门，我们表明，简化的暗物质模型的现象学偏离一致的${SU(2)_{\mathrm{L}} \times U(1)_{\mathrm{Y}}}$规范不变完成显着。我们讨论了简化模型未能捕捉到的关键物理，以及它对LHC搜索的影响。值得注意的是，我们表明，共振单Z搜索提供竞争力的灵敏度，标准的单射流分析在$13$ TeV LHC。
