Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/7727
Title: Search for new physics in events with two soft oppositely charged leptons and missing transverse momentum in proton–proton collisions at s=13 TeV
Authors: CMS Collaboration
Karapınar, Güler
Keywords: Leptons
Missing energy
Compressed
Issue Date: Jul-2018
Publisher: Elsevier Ltd.
Source: Sirunyan, A.M., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., Brandstetter, J. ...CMS Collaboration (2018). Search for new physics in events with two soft oppositely charged leptons and missing transverse momentum in proton–proton collisions at √s=13 TeV. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 782, 440-467. doi:10.1016/j.physletb.2018.05.062
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 35.9fb−1. 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 (χ˜1 ± and χ˜2 0) 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 χ˜1 ±/χ˜2 0 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 t˜ pair production, top squark masses up to 450 GeV are excluded for a mass difference of 40 GeV relative to the lightest neutralino.
URI: https://doi.org/10.1016/j.physletb.2018.05.062
https://hdl.handle.net/11147/7727
ISSN: 0370-2693
0370-2693
Appears in Collections:Mathematics / Matematik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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