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Search for third-generation scalar leptoquarks in the tτ channel in proton-proton collisions at s√=8 TeV
Baringer, Philip S. ; Bean, Alice ; Murray, Michael J. ; Sanders, Stephen J.
Baringer, Philip S.
Bean, Alice
Murray, Michael J.
Sanders, Stephen J.
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Abstract
A search for pair production of third-generation scalar leptoquarks decaying to top quark and τ lepton pairs is presented using proton-proton collision data at a center-of-mass energy of s√=8 TeV collected with the CMS detector at the LHC and corresponding to an integrated luminosity of 19.7 fb−1. The search is performed using events that contain an electron or a muon, a hadronically decaying τ lepton, and two or more jets. The observations are found to be consistent with the standard model predictions. Assuming that all leptoquarks decay to a top quark and a τ lepton, the existence of pair produced, charge −1/3, third-generation leptoquarks up to a mass of 685 GeV is excluded at 95% confidence level. This result constitutes the first direct limit for leptoquarks decaying into a top quark and a τ lepton, and may also be applied directly to the pair production of bottom squarks decaying predominantly via the R-parity violating coupling λ333′.
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Date
2015-07-09
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Springer Verlag
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Keywords
Hadron-Hadron Scattering, Beyond Standard Model
Citation
Khachatryan, V., Sirunyan, A. M., Tumasyan, A., Adam, W., Asilar, E., Bergauer, T., … Erö, J. (2015). Search for third-generation scalar leptoquarks in the tτ channel in proton-proton collisions at s√=8 TeV. J. High Energ. Phys., 2015(7). doi:10.1007/jhep07(2015)042