Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/7679
Title: Search for vectorlike light-flavor quark partners in proton-proton collisions at s = 8 TeV
Authors: CMS Collaboration
Karapınar, Güler
Keywords: Proton–proton collisions
Quarks
Heavy vectorlike quarks
Extensions of fermion sector
Issue Date: Apr-2018
Publisher: American Physical Society
Source: Sirunyan, A.M., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., Brandstetter, J. ...CMS Collaboration (2018). Search for vectorlike light-flavor quark partners in proton-proton collisions at √s = 8 TeV. Physical Review D, 97(7). doi:10.1103/PhysRevD.97.072008
Abstract: A search is presented for heavy vectorlike quarks (VLQs) that couple only to light quarks in proton-proton collisions at s=8 TeV at the LHC. The data were collected by the CMS experiment during 2012 and correspond to an integrated luminosity of 19.7 fb-1. Both single and pair production of VLQs are considered. The single-production search is performed for down-type VLQs (electric charge of magnitude 1/3), while the pair-production search is sensitive to up-type (charge of magnitude 2/3) and down-type VLQs. Final states with at least one muon or one electron are considered. No significant excess over standard model expectations is observed, and lower limits on the mass of VLQs are derived. The lower limits range from 400 to 1800 GeV, depending on the single-production cross section and the VLQ branching fractions B to W, Z, and Higgs bosons. When considering pair production alone, VLQs with masses below 845 GeV are excluded for B(W)=1.0, and below 685 GeV for B(W)=0.5, B(Z)=B(H)=0.25. The results are more stringent than those previously obtained for single and pair production of VLQs coupled to light quarks.
URI: https://doi.org/10.1103/PhysRevD.97.072008
https://hdl.handle.net/11147/7679
ISSN: 2470-0010
2470-0010
2470-0029
Appears in Collections:Mathematics / Matematik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

Files in This Item:
File Description SizeFormat 
PhysRevD.97.072008.pdfMakale (Article)2.51 MBAdobe PDFThumbnail
View/Open
Show full item record

CORE Recommender

SCOPUSTM   
Citations

9
checked on Dec 3, 2022

WEB OF SCIENCETM
Citations

6
checked on Dec 3, 2022

Page view(s)

42
checked on Nov 28, 2022

Download(s)

86
checked on Nov 28, 2022

Google ScholarTM

Check

Altmetric


Items in GCRIS Repository are protected by copyright, with all rights reserved, unless otherwise indicated.