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A search for physics beyond the standard model (SM) in final states with an electron or muon and missing transverse momentum is presented. The analysis uses data from proton-proton collisions at a centre-of-mass energy of 13 TeV, collected…

High Energy Physics - Experiment · Physics 2022-07-18 CMS Collaboration

The searches for extra-dimensions, top resonances, 4th generation quarks and leptoquark signatures are presented. The results are based on proton-proton collision data for a center-of mass energy of7 or 8 TeV, corresponding to various…

High Energy Physics - Experiment · Physics 2013-05-15 Matthieu Marionneau

We present definite correlations between the CMS 5 \fb all-hadronic search employing the stransverse mass variable $M_{T2}$ and the ATLAS 5 \fb all-hadronic and multijet supersymmetry (SUSY) searches, suggesting the possibility that both…

High Energy Physics - Phenomenology · Physics 2012-06-04 Tianjun Li , James A. Maxin , Dimitri V. Nanopoulos , Joel W. Walker

A search for supersymmetry in the context of general gauge-mediated (GGM) breaking with the lightest neutralino as the next-to-lightest supersymmetric particle and the gravitino as the lightest is presented. The data sample corresponds to…

High Energy Physics - Experiment · Physics 2012-08-27 CMS Collaboration

A generic search for resonances is performed with events containing a $Z$ boson with transverse momentum greater than 100 GeV, decaying into $e^+e^-$ or $\mu^+\mu^-$. The analysed data collected with the ATLAS detector in proton-proton…

High Energy Physics - Experiment · Physics 2023-07-13 ATLAS Collaboration

A recent study [1] has shown that a simplified model predicting a heavy scalar of mass 270 GeV ($H$) that decays to a Standard Model (SM) Higgs boson in association with a scalar singlet of mass 150 GeV ($S$) can accommodate several…

High Energy Physics - Phenomenology · Physics 2019-10-18 Stefan von Buddenbrock , Alan S. Cornell , Yaquan Fang , Abdualazem Fadol Mohammed , Mukesh Kumar , Bruce Mellado , Kehinde G. Tomiwa

The ATLAS collaboration reported a 3sigma excess in the search of events containing on-Z dilepton, jets, and large missing momentum (MET) in the 8 TeV LHC run. Motivated by this excess, many models of new physics have been proposed.…

High Energy Physics - Phenomenology · Physics 2016-05-23 Xiaochuan Lu , Satoshi Shirai , Takahiro Terada

Results from a search for supersymmetry in events with four or more charged leptons (electrons, muons and taus) are presented. The analysis uses a data sample corresponding to 36.1 fb$^{-1}$ of proton-proton collisions delivered by the…

High Energy Physics - Experiment · Physics 2018-09-17 ATLAS Collaboration

Two related searches for phenomena beyond the standard model (BSM) are performed using events with hadronic jets and significant transverse momentum imbalance. The results are based on a sample of proton-proton collisions at a…

High Energy Physics - Experiment · Physics 2020-01-08 CMS Collaboration

The large difference between the Planck scale and the electroweak scale, known as the hierarchy problem, is addressed in certain models through the postulate of extra spatial dimensions. A search for evidence of extra spatial dimensions in…

High Energy Physics - Experiment · Physics 2013-06-11 ATLAS Collaboration

A search is presented for physics beyond the standard model (SM) in final states with opposite-sign isolated lepton pairs accompanied by hadronic jets and missing transverse energy. The search is performed using LHC data recorded with the…

High Energy Physics - Experiment · Physics 2012-08-27 CMS Collaboration

A search is presented for physics beyond the standard model in final states with two opposite-sign same-flavor leptons, jets, and missing transverse momentum. The data sample corresponds to an integrated luminosity of 19.4 inverse…

High Energy Physics - Experiment · Physics 2015-05-18 CMS Collaboration

The ATLAS detector has been used to search for high-mass states decaying into a single high momentum lepton and missing transverse energy, such as new heavy charged gauge bosons. The latest search results for a W Prime boson decaying to…

High Energy Physics - Experiment · Physics 2011-09-29 James Degenhardt

In this paper we describe a novel, model-independent technique of "rectangular aggregations" for mining the LHC data for hints of new physics. A typical (CMS) search now has hundreds of signal regions, which can obscure potentially…

High Energy Physics - Phenomenology · Physics 2018-01-17 Pouya Asadi , Matthew R. Buckley , Anthony DiFranzo , Angelo Monteux , David Shih

A search for new physics is carried out in events with at least three electrons or muons in any combination, jets, and missing transverse momentum. Results are based on the sample of proton-proton collision data produced by the LHC at a…

High Energy Physics - Experiment · Physics 2018-02-21 CMS Collaboration

A search for supersymmetry involving events with at least one photon, one electron or muon, and large missing transverse momentum has been performed by the CMS experiment. The data sample corresponds to an integrated luminosity of 19.7…

High Energy Physics - Experiment · Physics 2016-04-06 CMS Collaboration

Many theories beyond the Standard Model predict new phenomena which decay to well isolated, high-$p_{\text{T}}$ leptons. Searches for new physics with these signatures are performed using the ATLAS experiment at the LHC. The results…

High Energy Physics - Experiment · Physics 2018-10-02 Sébastien Rettie

Searches for high-mass resonances decaying to pairs of standard model bosons using ATLAS and CMS detectors are presented. The searches use 15 - 36 $\textrm{fb}^{-1}$ of proton-proton collision data collected at the centre-of-mass energy of…

High Energy Physics - Experiment · Physics 2017-09-27 Ljiljana Morvaj

This Letter presents a search for tb resonances in 1.04/fb of LHC proton-proton collision data collected by the ATLAS detector at a center-of-mass energy of 7 TeV. Events with a lepton, missing transverse momentum, and two jets are selected…

High Energy Physics - Experiment · Physics 2012-08-27 ATLAS Collaboration

A search for new phenomena in events featuring a high energy jet and large missing transverse momentum in proton-proton collisions at sqrt(s) = 7 TeV is presented using a dataset corresponding to an integrated luminosity of 33 pb^-1…

High Energy Physics - Experiment · Physics 2012-08-27 ATLAS Collaboration