Bibcode
Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Brondolin, E.; Dragicevic, M.; Erö, J.; Flechl, M.; Friedl, M.; Frühwirth, R.; Ghete, V. M.; Hartl, C.; Hörmann, N.; Hrubec, J.; Jeitler, M.; König, A.; Krammer, M.; Krätschmer, I.; Liko, D.; Matsushita, T.; Mikulec, I.; Rabady, D.; Rad, N.; Rahbaran, B.; Rohringer, H.; Schieck, J.; Strauss, J.; Treberer-Treberspurg, W.; Waltenberger, W.; Wulz, C.-E.; Mossolov, V.; Shumeiko, N.; Suarez Gonzalez, J.; Alderweireldt, S.; Cornelis, T.; De Wolf, E. A.; Janssen, X.; Knutsson, A.; Lauwers, J.; Luyckx, S.; Van De Klundert, M.; Van Haevermaet, H.; Van Mechelen, P.; Van Remortel, N.; Van Spilbeeck, A.; Abu Zeid, S.; Blekman, F.; D'Hondt, J.; Daci, N.; De Bruyn, I.; Deroover, K.; Heracleous, N.; Keaveney, J.; Lowette, S.; Moortgat, S.; Moreels, L.; Olbrechts, A.; Python, Q.; Strom, D.; Tavernier, S.; Van Doninck, W.; Van Mulders, P.; Van Parijs, I.; Brun, H.; Caillol, C.; Clerbaux, B.; De Lentdecker, G.; Fasanella, G.; Favart, L.; Goldouzian, R.; Grebenyuk, A.; Karapostoli, G.; Lenzi, T.; Léonard, A.; Maerschalk, T.; Marinov, A.; Randle-conde, A.; Seva, T.; Vander Velde, C.; Vanlaer, P.; Yonamine, R.; Zenoni, F.; Zhang, F.; Benucci, L.; Cimmino, A.; Crucy, S.; Dobur, D.; Fagot, A.; Garcia, G.; Gul, M.; Mccartin, J.; Ocampo Rios, A. A.; Poyraz, D.; Ryckbosch, D.; Salva, S.; Schöfbeck, R.; Sigamani, M. et al.
Bibliographical reference
Physics Letters B, Volume 767, p. 403-430.
Advertised on:
4
2017
Citations
8
Refereed citations
8
Description
An inclusive search is performed for supersymmetry in final states
containing jets and an apparent imbalance in transverse momentum,
p→Tmiss, due to the production of unobserved
weakly interacting particles in pp collisions at a centre-of-mass energy
of 8 TeV. The data, recorded with the CMS detector at the CERN LHC,
correspond to an integrated luminosity of 18.5 fb-1. The
dimensionless kinematic variable αT is used to
discriminate between events with genuine
p→Tmiss associated with unobserved particles
and spurious values of p→Tmiss arising from
jet energy mismeasurements. No excess of event yields above the expected
standard model backgrounds is observed. The results are interpreted in
terms of constraints on the parameter space of several simplified models
of supersymmetry that assume the pair production of top squarks. The
search provides sensitivity to a broad range of top squark (t ˜)
decay modes, including the two-body decay t ˜ → c
χ˜10, where c is a charm quark and
χ˜10 is the lightest neutralino, as well
as the four-body decay t ˜ →
bffbar‧χ˜10, where b is
a bottom quark and f and fbar‧ are fermions produced in
the decay of an intermediate off-shell W boson. These modes dominate in
scenarios in which the top squark and lightest neutralino are nearly
degenerate in mass. For these modes, top squarks with masses as large as
260 and 225 GeV are excluded, respectively, for the two- and four-body
decays.