Constraints on models of scalar and vector leptoquarks decaying to a quark and a neutrino at root s=13 TeV
File(s)PhysRevD.98.032005(1).pdf (421.08 KB)
Published version
Author(s)
Type
Journal Article
Abstract
The results of a previous search by the CMS Collaboration for squarks and gluinos are reinterpreted to constrain models of leptoquark (LQ) production. The search considers jets in association with a transverse momentum imbalance, using the MT2 variable. The analysis uses proton-proton collision data at √s=13 TeV, recorded with the CMS detector at the LHC in 2016 and corresponding to an integrated luminosity of 35.9 fb−1. Leptoquark pair production is considered with LQ decays to a neutrino and a top, bottom, or light quark. This reinterpretation considers higher mass values than the original CMS search to constrain both scalar and vector LQs. Limits on the cross section for LQ pair production are derived at the 95% confidence level depending on the LQ decay mode. A vector LQ decaying with a 50% branching fraction to tν, and 50% to bτ, has been proposed as part of an explanation of anomalous flavor physics results. In such a model, using only the decays to tν, LQ masses below 1530 GeV are excluded assuming the Yang-Mills case with coupling κ=1, or 1115 GeV in the minimal coupling case κ=0, placing the most stringent constraint to date from pair production of vector LQs.
Date Issued
2018-08-10
Date Acceptance
2018-05-25
Citation
PHYSICAL REVIEW D, 2018, 98 (3)
ISSN
2470-0010
Publisher
American Physical Society
Journal / Book Title
PHYSICAL REVIEW D
Volume
98
Issue
3
Copyright Statement
© 2018 CERN, for the CMS Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license (https://creativecommons.org/licenses/by/4.0/). Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000441334500002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Physical Sciences
Astronomy & Astrophysics
Physics, Particles & Fields
Physics
P(P)OVER-BAR COLLISIONS
PAIR PRODUCTION
SUPERGAUGE TRANSFORMATIONS
HADRON COLLIDERS
SEARCH
SUPERSYMMETRY
LEPTON
SIGNATURES
INVARIANT
EXTENSION
Publication Status
Published
Article Number
ARTN 032005
Date Publish Online
2018-08-10