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Search for new physics in events with two soft oppositely charged leptons and missing transverse momentum in proton–proton collisions at s=13TeV

descriptionPublicationkeyboard_double_arrow_right Article , Other literature type , Report , Research , Preprint , Journal 01 Jul 2018Embargo end date: 10 Jul 2018 Italy, Hungary, Portugal, Germany, Spain, Switzerland, Belgium, United States, Italy, United Kingdom, United States, Germany, United States, United States, Portugal, France, United Kingdom, Italy, Italy, Hungary, Greece, United Kingdom, Brazil, France, United Kingdom, Germany, France Publisher:Elsevier BVJournal:Physics Letters B, volume 782, pages 440-467 (issn: 0370-2693,

Authors: Nathan Mirman; Riccardo Paramatti; Annika Vanhoefer; Thomas Ferguson; Thierry Maerschalk; Gregor Mittag; Faridah Mohamad Idris; +193 Authors

Nathan Mirman; Riccardo Paramatti; Annika Vanhoefer; Thomas Ferguson; Thierry Maerschalk; Gregor Mittag; Faridah Mohamad Idris; Cesare Calabria; Sanjay Padhi; Daniele Trocino; Carlos Florez; Michal Olszewski; David Cussans; Luca Pacher; Grant Riley; Marco Alexander Harrendorf; Giacomo Ortona; Georgios Daskalakis; Shuichi Kunori; William John Womersley; Sandra S. Padula; Apichart Hortiangtham; James Rohlf; Heiner Tholen; Konrad Deiters; Vincenzo Daponte; Yacine Haddad; Carlo Battilana; Prakash Thapa; Weimin Wu; Gino Bolla; Alessia Tricomi; Dhanush Anil Hangal; Kirika Uchida; Pierre Piroué; Davide Cieri; Peter Wittich; Federica Primavera; Samuel Bein; Andrey Popov; Andrew Hart; Salvatore Costa; Martino Margoni; Martino Margoni; Markus Spanring; Alice Cocoros; Andreas Kornmayer; Marco Paganoni; Marco Paganoni; Suman Chatterjee; Robert Fischer; Michael Reichmann; Marina Chadeeva; Fábio Lúcio Alves; Jared Turkewitz; Houmani El Mamouni; Johan Borg; Ta-Yung Ling; Thi Hien Doan; Andris Skuja; Amina Zghiche; Shervin Nourbakhsh; Damir Lelas; Fabrizio Margaroli; Kai Yi; Fred-Markus Helmut Stober; Yi-ting Duh; Nathan Kellams; Russell Richard Betts; Johannes Grossmann; Zoltan Laszlo Trocsanyi; Andre Sznajder; Alessio Magitteri; Oliver Buchmuller; Ferdinando Giordano; David Colling; Daniel Robert Marlow; J William Gary; Jan Krolikowski; Souvik Das; Yongbin Feng; Wit Busza; Rachael Bucci; Jack Wright; Georgios Mavromanolakis; Luiz Mundim; Konstantinos Theofilatos; Richard Loveless; Elizabeth Locci; Olga Kodolova; Ferenc Sikler; Cristina Oropeza Barrera; Giancarlo Mantovani; Ada Solano; Nikolay Terentyev; Paul Sheldon; Robert Klanner; Zhoudunming Tu; Paul David Luckey; Mia Tosi; Roumyana Hadjiiska; Mauro Verzetti; Ravi Janjam; Daniele Vadruccio; Aobo Zhang; Pietro Faccioli; Helio Nogima; Peter Thomassen; Ian R Tomalin; Thomas James; Stephan Linn; Martti Raidal; Iurii Antropov; Rino Castaldi; Douglas Berry; Susan Dittmer; Thomas Weiler; Simranjit Singh Chhibra; James Alexander; Andrew Mehta; Yang Yang; Ksenia Shchelina; Igor Bayshev; Alberto Sánchez Hernández; Helena Malbouisson; Rafael Teixeira De Lima; Christian Veelken; Alfredo Castaneda Hernandez; Yuta Takahashi; Steven R. Simon; Simon Kudella; Quan Wang; Armen Tumasyan; Diego Beghin; Diego Ciangottini; Yagya Raj Joshi; Martina Vit; Engin Eren; Livio Fanò; Ajeeta Khatiwada; Frank Hartmann; Tao Huang; David Mark Raymond; Shubham Pandey; Aditee Rane; Frédéric Drouhin; Andreas Hinzmann; C. A. Carrillo Montoya; Joseph Heideman; Ignacio Redondo; Marc M Baarmand; Alexander Zhokin; Clemens Wöhrmann; Adolf Bornheim; Maxwell Chertok; Luca Perrozzi; Gigi Rolandi; Valentin Sulimov; Basil Schneider; Alexander Ershov; Kunal Kothekar; Alessandro Montanari; Thomas Esch; Kelly Beernaert; Emanuele Di Marco; Georgios Anagnostou; Jacopo Pazzini; Sudhir Malik; Yong Ban; Kyungwook Nam; Bruno Galinhas; James D. Olsen; Jamal Rorie; Dominik Nowatschin; Candan Dozen; Marc Osherson; Salvatore My; Harry Cheung; Ioannis Papadopoulos; Salvatore Nuzzo; Hannsjoerg Artur Weber; Christian Barth; Abhigyan Dasgupta; Hui Li; Juan Pablo Fernández Ramos; Andrew Whitbeck; Cédric Prieels; Deborah Pinna; Antonio María Pérez-Calero Yzquierdo; Ivan Marchesini; Gregory R Snow; Mariana Shopova; Dmitry Elumakhov; John N. Wood; Andreas Künsken; Vadim Oreshkin; Manuel Giffels; Andrew Melo; Raman Khurana; Joosep Pata;

Search for new physics in events with two soft oppositely charged leptons and missing transverse momentum in proton–proton collisions at s=13TeV

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Abstract

A search is presented for new physics in events with two low-momentum, oppositely charged leptons (electrons or muons) and missing transverse momentum in proton-proton collisions at a centre-of-mass energy of 13 TeV. The data collected using the CMS detector at the LHC correspond to an integrated luminosity of 35.9. The observed event yields are consistent with the expectations from the standard model. The results are interpreted in terms of pair production of charginos and neutralinos (X1 and X2) with nearly degenerate masses, as expected in natural supersymmetry models with light higgsinos, as well as in terms of the pair production of top squarks (t), when the lightest neutralino and the top squark have similar masses. At 95% confidence level, wino-like X1/X2 masses are excluded up to 230 GeV for a mass difference of 20 GeV relative to the lightest neutralino. In the higgsino-like model, masses are excluded up to 168 GeV for the same mass difference. For pair production, top squark masses up to 450 GeV are excluded for a mass difference of 40 GeV relative to the lightest neutralino.

Physics Letters B, 782

ISSN:0370-2693

ISSN:0031-9163

ISSN:1873-2445

Countries

Italy, Hungary, Portugal, Germany, Spain, Switzerland, Belgium, United States, Italy, United Kingdom, United States, Germany, United States, United States, Portugal, France, United Kingdom, Italy, Italy, Hungary, Greece, United Kingdom, Brazil, France, United Kingdom, Germany, France

Related Organizations

Helsinki Institute of Physics
Finland
University of Milan
Italy
University of Münster
Germany
Universidad de San Buenaventura, Bogota
Colombia
College of New Jersey
United States

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Keywords

transverse momentum: missing-energy, 13000 GeV-cms, S046WNO, FORTRAN CODE, High Energy Physics - Experiment, electron: pair production, High Energy Physics - Experiment (hep-ex), PROGRAM, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], scattering [p p], stop: mass: lower limit, CMS; Compressed; Leptons; Missing energy; SUSY, CMS; Compressed; Leptons; Missing energy; SUSY; Nuclear and High Energy Physics, Compressed, CMS, Physics, new physics: search for, Settore FIS/01 - Fisica Sperimentale, Missing energy, SUSY, 320, 520, chargino: pair production, mass: lower limit [stop], muon: pair production, CERN LHC Coll, SUPERSYMMETRIC PARTICLES, Q1 Science (General) / természettudomány általában, Physical Sciences, Physique des particules élémentaires, colliding beams [p p], Particle Physics - Experiment, stop: pair production, ddc:620, Nuclear and High Energy Physics, p p: scattering, 530 Physics, neutralino: pair production, S046ZNO, QC1-999, Particles & Fields, STANDARD MODEL, squark: mass, FOS: Physical sciences, Physics Institute, Astronomy & Astrophysics, pair production [neutralino], 530, Lepton, DECAYS, CHARGINOS, E(+)E(-) COLLISIONS, S046STP, search for [new physics], pair production [chargino], 539, Nuclear, pair production [stop], pair production [electron], pair production [muon], Engineering & allied operations, CMS; SUSY; Compressed; Leptons; Missing energy, Science & Technology, hep-ex, Molecular, 028, mass difference, mass [squark], Leptons, 620, missing-energy [transverse momentum], 0202 Atomic, Particle And Plasma Physics, supersymmetry, p p: colliding beams, info:eu-repo/classification/ddc/620, MSSM, BREAKING, experimental results, ddc: ddc:530

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