Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/7676
Title: Search for pair production of excited top quarks in the lepton + jets final state
Authors: CMS Collaboration
Karapınar, Güler
Keywords: Top quark
Proton–proton collisions
Randall–Sundrum model
Beyond two generations
Issue Date: Mar-2018
Publisher: Elsevier Ltd.
Source: Sirunyan, A.M., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., Brandstetter, J. ...CMS Collaboration (2018). Search for pair production of excited top quarks in the lepton + jets final state. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 778, 349-370. doi:10.1016/j.physletb.2018.01.049
Abstract: A search is performed for the pair production of spin-3/2 excited top quarks, each decaying to a top quark and a gluon. The search uses the data collected with the CMS detector from proton–proton collisions at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb−1. Events are selected by requiring an isolated muon or electron, an imbalance in the transverse momentum, and at least six jets of which exactly two must be compatible with originating from the fragmentation of a bottom quark. No significant excess over the standard model predictions is found. A lower limit of 1.2 TeV is set at 95% confidence level on the mass of the spin-3/2 excited top quark in an extension of the Randall–Sundrum model, assuming a 100% branching fraction of its decay into a top quark and a gluon. These are the best limits to date in a search for excited top quarks and the first at 13 TeV.
URI: https://doi.org/10.1016/j.physletb.2018.01.049
https://hdl.handle.net/11147/7676
ISSN: 0370-2693
Appears in Collections:Mathematics / Matematik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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