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.; Knünz, V.; König, A.; Krammer, M.; Krätschmer, I.; Liko, D.; Matsushita, T.; Mikulec, I.; Rabady, D.; Rahbaran, B.; Rohringer, H.; Schieck, J.; Schöfbeck, R.; 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.; Moreels, L.; Olbrechts, A.; Python, Q.; Strom, D.; Tavernier, S.; van Doninck, W.; van Mulders, P.; van Onsem, G. P.; van Parijs, I.; Barria, P.; Brun, H.; Caillol, C.; Clerbaux, B.; de Lentdecker, G.; Fasanella, G.; Favart, L.; Grebenyuk, A.; Karapostoli, G.; Lenzi, T.; Léonard, A.; Maerschalk, T.; Marinov, A.; Perniè, L.; Randle-Conde, A.; Seva, T.; Vander Velde, C.; Vanlaer, P.; Yonamine, R.; Zenoni, F.; Zhang, F.; Beernaert, K.; Benucci, L.; Cimmino, A.; Crucy, S.; Dobur, D.; Fagot, A.; Garcia, G.; Gul, M.; McCartin, J.; Ocampo Rios, A. A.; Poyraz, D.; Ryckbosch, D. et al.
Bibliographical reference
Physics Letters B, Volume 760, p. 178-201.
Advertised on:
9
2016
Citations
10
Refereed citations
9
Description
The results of a search for a supersymmetric partner of the top quark
(top squark), pair-produced in proton-proton collisions at √{ s} =
8 TeV, are presented. The search, which focuses on R-parity violating,
chargino-mediated decays of the top squark, is performed in final states
with low missing transverse momentum, two oppositely charged electrons
or muons, and at least five jets. The analysis uses a data sample
corresponding to an integrated luminosity of 19.7 fb-1
collected with the CMS detector at the LHC in 2012. The data are found
to be in agreement with the standard model expectation, and upper limits
are placed on the top squark pair production cross section at 95%
confidence level. Assuming a 100% branching fraction for the top squark
decay chain, t ˜ → t χ˜1
± , χ˜1 ±
→ℓ± + jj , top squark masses less than 890
(1000) GeV for the electron (muon) channel are excluded for the first
time in models with a single nonzero R-parity violating coupling
λijk‧ (i , j , k ≤ 2), where i , j
, k correspond to the three generations.