Bibcode
Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Brondolin, E.; Dragicevic, M.; Erö, J.; Escalante Del Valle, A.; Flechl, M.; Friedl, M.; Frühwirth, R.; Ghete, V. M.; Grossmann, J.; Hrubec, J.; Jeitler, M.; König, A.; Krammer, N.; Krätschmer, I.; Liko, D.; Madlener, T.; Mikulec, I.; Pree, E.; Rad, N.; Rohringer, H.; Schieck, J.; Schöfbeck, R.; Spanring, M.; Spitzbart, D.; Taurok, A.; Waltenberger, W.; Wittmann, J.; Wulz, C.-E.; Zarucki, M.; Chekhovsky, V.; Mossolov, V.; Suarez Gonzalez, J.; De Wolf, E. A.; Di Croce, D.; Janssen, X.; Lauwers, J.; Van De Klundert, M.; Van Haevermaet, H.; Van Mechelen, P.; Van Remortel, N.; Abu Zeid, S.; Blekman, F.; D'Hondt, J.; De Bruyn, I.; De Clercq, J.; Deroover, K.; Flouris, G.; Lontkovskyi, D.; Lowette, S.; Marchesini, I.; Moortgat, S.; Moreels, L.; Python, Q.; Skovpen, K.; Tavernier, S.; Van Doninck, W.; Van Mulders, P.; Van Parijs, I.; Beghin, D.; Bilin, B.; Brun, H.; Clerbaux, B.; De Lentdecker, G.; Delannoy, H.; Dorney, B.; Fasanella, G.; Favart, L.; Goldouzian, R.; Grebenyuk, A.; Kalsi, A. K.; Lenzi, T.; Luetic, J.; Maerschalk, T.; Seva, T.; Starling, E.; Vander Velde, C.; Vanlaer, P.; Vannerom, D.; Yonamine, R.; Zenoni, F.; Cornelis, T.; Dobur, D.; Fagot, A.; Gul, M.; Khvastunov, I.; Poyraz, D.; Roskas, C.; Salva, S.; Trocino, D.; Tytgat, M.; Verbeke, W.; Vit, M.; Zaganidis, N. et al.
Referencia bibliográfica
Physics Letters B, Volume 782, p. 440-467.
Fecha de publicación:
7
2018
Número de citas
106
Número de citas referidas
68
Descripción
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.