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|a dc
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|a CMS Collaboration
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|a Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
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|a Massachusetts Institute of Technology. Department of Physics
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|a Massachusetts Institute of Technology. Laboratory for Nuclear Science
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|a Abercrombie, Daniel Robert
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|a Allen, Brandon Leigh
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|a Apyan, Aram
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|a Barbieri, Richard Alexander
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|a Baty, Austin Alan
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|a Bi, Ran
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|a Bierwagen, Katharina
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|a Brandt, Stephanie Akemi
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|a Cali, Ivan Amos
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|a Demiragli, Zeynep
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|a Di Matteo, Leonardo
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|a Gomez-Ceballos, Guillelmo
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|a Kovalskyi, Dmytro
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|a Lee, Yen-Jie
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|a Levin, Amy Elizabeth
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|a Luckey Jr, P David
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|a Marini, Andrea Carlo
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|a McGinn, Christopher Francis
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|a Mironov, Camelia Maria
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|a Narayanan, Siddharth Madhavan
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|a Niu, Xinmei
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|a Paus, Christoph M. E.
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|a Roland, Christof E
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|a Roland, Gunther M
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|a Stephans, George S. F.
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|a Sumorok, Konstanty C
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|a Tatar, Kaya
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|a Allen, Brandon Leigh
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|a Apyan, Aram
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|a Barbieri, Richard Alexander
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|a Baty, Austin Alan
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|a Bi, Ran
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|a Bierwagen, Katharina
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|a Brandt, Stephanie Akemi
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|a Busza, Wit
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|a Cali, Ivan Amos
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|a Demiragli, Zeynep
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|a Di Matteo, Leonardo
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|a Gomez-Ceballos, Guillelmo
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|a Goncharov, Maxim
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|a Hsu, Dylan George
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|a Iiyama, Yutaro
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|a Innocenti, Gian Michele
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|a Klute, Markus
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|a Kovalskyi, Dmytro
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|a Krajczar, Krisztian F.
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|a Lai, Yue Shi
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|a Lee, Yen-Jie
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|a Levin, Amy Elizabeth
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|a Luckey Jr, P David
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|a Marini, Andrea Carlo
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|a McGinn, Christopher Francis
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|a Mironov, Camelia Maria
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|a Narayanan, Siddharth Madhavan
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|a Niu, Xinmei
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|a Paus, Christoph M. E.
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|a Roland, Christof E
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|a Roland, Gunther M
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|a Salfeld-Nebgen, Jakob Maxillian Henry
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|a Stephans, George S. F.
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|a Sumorok, Konstanty C
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|a Tatar, Kaya
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|a Varma, Mukund Madhav
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|a Velicanu, Dragos Alexandru
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|a Veverka, Jan
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|a Wang, Jing
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|a Wang, Ta-Wei
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|a Wyslouch, Boleslaw
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|a Yang, Ming
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|a Wyslouch, Victoria
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|a Search for Anomalous Wtb Couplings and Flavour-Changing Neutral Currents in t-Channel Single Top Quark Production in Pp Collisions at √s = 7 and 8 TeV
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|b Springer Nature,
|c 2018-10-16T14:25:50Z.
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|z Get fulltext
|u http://hdl.handle.net/1721.1/118581
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|a Single top quark events produced in the t channel are used to set limits on anomalous Wtb couplings and to search for top quark flavour-changing neutral current (FCNC) interactions. The data taken with the CMS detector at the LHC in proton-proton collisions at √s = 7 and 8 TeV correspond to integrated luminosities of 5.0 and 19.7 fb⁻¹, respectively. The analysis is performed using events with one muon and two or three jets. A Bayesian neural network technique is used to discriminate between the signal and backgrounds, which are observed to be consistent with the standard model prediction. The 95% confidence level (CL) exclusion limits on anomalous right-handed vector, and left- and right-handed tensor Wtb couplings are measured to be |fVR| < 0.16, |fTL| < 0.057, and − 0.049 < fTR< 0.048, respectively. For the FCNC couplings κtugand κtcg, the 95% CL upper limits on coupling strengths are |κtug|/Λ < 4.1 × 10⁻³TeV⁻¹and |κtcg|/Λ < 1.8 × 10⁻²TeV⁻¹, where Λ is the scale for new physics, and correspond to upper limits on the branching fractions of 2.0 × 10⁻⁵ and 4.1 × 10⁻⁴ for the decays t → ug and t → cg, respectively. Keywords: Flavour Changing Neutral Currents; Hadron-Hadron scattering (experiments); Top physics
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|a Article
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|t Journal of High Energy Physics
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