Bibcode
Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Brondolin, E.; Dragicevic, M.; Erö, J.; 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.; Rabady, D.; Rad, N.; Rohringer, H.; Schieck, J.; Schöfbeck, R.; Spanring, M.; Spitzbart, D.; Strauss, J.; 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 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.; Moortgat, S.; Moreels, L.; Olbrechts, A.; Python, Q.; Skovpen, K.; Tavernier, S.; Van Doninck, W.; Van Mulders, P.; Van Parijs, I.; Brun, H.; Clerbaux, B.; De Lentdecker, G.; Delannoy, H.; Fasanella, G.; Favart, L.; Goldouzian, R.; Grebenyuk, A.; Karapostoli, G.; Lenzi, T.; Luetic, J.; Maerschalk, T.; Marinov, A.; Randle-conde, A.; Seva, T.; Vander Velde, C.; Vanlaer, P.; Vannerom, D.; Yonamine, R.; Zenoni, F.; Zhang, F.; Cimmino, A.; Cornelis, T.; Dobur, D.; Fagot, A.; Gul, M.; Khvastunov, I.; Poyraz, D.; Roskas, C.; Salva, S.; Tytgat, M.; Verbeke, W.; Zaganidis, N.; Bakhshiansohi, H.; Bondu, O.; Brochet, S. et al.
Bibliographical reference
Journal of High Energy Physics, Volume 2017, Issue 10, article id. #5, 64 pp.
Advertised on:
10
2017
Citations
19
Refereed citations
19
Description
A search for direct production of top squark pairs in events with jets
and large transverse momentum imbalance is presented. The data are based
on proton-proton collisions at a center-of-mass energy of 13 TeV,
collected with the CMS detector in 2016 at the CERN LHC, and correspond
to an integrated luminosity of 35.9 fb-1. The search
considers a variety of R-parity conserving supersymmetric models,
including ones for which the top squark and neutralino masses are nearly
degenerate. Specialized jet reconstruction tools are developed to
exploit the unique characteristics of the signal topologies. With no
significant excess of events observed above the standard model
expectations, upper limits are set on the direct top squark pair
production cross section in the context of simplified supersymmetric
models for various decay hypotheses. Models with larger differences in
mass between the top squark and neutralino are probed for masses up to
1040 and 500 GeV, respectively, whereas models with a more compressed
mass hierarchy are probed up to 660 and 610 GeV, respectively. The
smallest mass difference probed is for masses near to 550 and 540 GeV,
respectively. [Figure not available: see fulltext.]