Search for Pair Production of Third-Generation Leptoquarks and Top Squarks in pp Collisions at s√=7 TeV
Baringer, Philip S.
Kenny, R. P., III
Murray, Michael J.
Sanders, Stephen J.
Stringer, Robert W.
Wood, Jeffrey Scott
Sirunyan, A. M.
American Physical Society
Scholarly/refereed, publisher version
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Results are presented from a search for the pair production of third-generation scalar and vector leptoquarks, as well as for top squarks in R-parity-violating supersymmetric models. In either scenario, the new, heavy particle decays into a τ lepton and a b quark. The search is based on a data sample of pp collisions at s√=7 TeV, which is collected by the CMS detector at the LHC and corresponds to an integrated luminosity of 4.8 fb(−1). The number of observed events is found to be in agreement with the standard model prediction, and exclusion limits on mass parameters are obtained at the 95% confidence level. Vector leptoquarks with masses below 760 GeV are excluded and, if the branching fraction of the scalar leptoquark decay to a τ lepton and a b quark is assumed to be unity, third-generation scalar leptoquarks with masses below 525 GeV are ruled out. Top squarks with masses below 453 GeV are excluded for a typical benchmark scenario, and limits on the coupling between the top squark, τ lepton, and b quark, λ′333 are obtained. These results are the most stringent for these scenarios to date.
This is the publisher's version, also available electronically from http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.110.081801.
S. Chatrchyan et al. (CMS Collaboration). (2013). "Search for Pair Production of Third-Generation Leptoquarks and Top Squarks in pp Collisions at s√=7 TeV." Physical Review Letters, 110(8):081801. http://dx.doi.org/10.1103/PhysRevLett.110.081801.
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