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Title: Search for new physics in same-sign dilepton events in proton-proton collisions at √s = 13 TeV

Journal Article · · European Physical Journal. C, Particles and Fields
 [1]
  1. Yerevan Physics Inst. (YerPhI), Yerevan (Armenia). et al.
+ Show Author Affiliations

A search for new physics is performed using events with two isolated same-sign leptons, two or more jets, and missing transverse momentum. The results are based on a sample of proton-proton collisions at a center-of-mass energy of 13 TeV recorded with the CMS detector at the LHC, corresponding to an integrated luminosity of 2.3 inverse femtobarns. Multiple search regions are defined by classifying events in terms of missing transverse momentum, the scalar sum of jet transverse momenta, the transverse mass associated with a W boson candidate, the number of jets, the number of b quark jets, and the transverse momenta of the leptons in the event. The analysis is sensitive to a wide variety of possible signals beyond the standard model. No excess above the standard model background expectation is observed. Constraints are set on various supersymmetric models, with gluinos and bottom squarks excluded for masses up to 1300 and 680 GeV, respectively, at the 95% confidence level. Upper limits on the cross sections for the production of two top quark-antiquark pairs (119 fb) and two same-sign top quarks (1.7 pb) are also obtained. Selection efficiencies and model independent limits are provided to allow further interpretations of the results.

Research Organization:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Argonne National Laboratory (ANL), Argonne, IL (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Rice Univ., Houston, TX (United States); Univ. of California, Santa Barbara, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Organization:
CMS Collaboration
Grant/Contract Number:
AC02-07CH11359; SC0010103; SC0011702
OSTI ID:
1287384
Alternate ID(s):
OSTI ID: 1411641; OSTI ID: 1595966
Report Number(s):
FERMILAB-PUB-16-198-CMS; CMS-SUS-15-008; CERN-EP-2016-119; arXiv:1605.03171; 1456935
Journal Information:
European Physical Journal. C, Particles and Fields, Vol. 76, Issue 8; ISSN 1434-6044
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 60 works
Citation information provided by
Web of Science

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Cited By (30)

Search for supersymmetry in events with at least three electrons or muons, jets, and missing transverse momentum in proton-proton collisions at s = 13 $$ \sqrt{s}=13 $$ TeV journal February 2018
Search for top quark partners with charge 5/3 in the same-sign dilepton and single-lepton final states in proton-proton collisions at s = 13 $$ \sqrt{s}=13 $$ TeV journal March 2019
Search for top quark partners with charge 5/3 in proton-proton collisions at s = 13 $$ \sqrt{s}=13 $$ TeV journal August 2017
Second stop and sbottom searches with a stealth stop journal November 2016
A simple model to explain observed muon sector anomalies and small neutrino masses journal October 2019
Lepton number violation in heavy Higgs boson decays to sneutrinos journal January 2020
Search for supersymmetry in the all-hadronic final state using top quark tagging in p p collisions at s = 13     TeV journal July 2017
Same-sign top pair plus W production in flavor changing vector and scalar models journal October 2018
Observation of Single Top Quark Production in Association with a Z Boson in Proton-Proton Collisions at s = 13     TeV journal April 2019
Search for a Light Charged Higgs Boson Decaying to a W Boson and a C P -Odd Higgs Boson in Final States with e μ μ or μ μ μ in Proton-Proton Collisions at s = 13     TeV journal September 2019
Search for physics beyond the standard model in events with two leptons of same sign, missing transverse momentum, and jets in proton–proton collisions at $$\sqrt{s} = 13\,\text {TeV} $$ s = 13 TeV journal September 2017
Search for new phenomena with multiple charged leptons in proton–proton collisions at $$\sqrt{s}= 13$$ s = 13 $$\,\text {TeV}$$ TeV journal September 2017
Search for standard model production of four top quarks with same-sign and multilepton final states in proton–proton collisions at $$\sqrt{s} = 13\,\text {TeV} $$ s = 13 TeV journal February 2018
Search for resonant production of second-generation sleptons with same-sign dimuon events in proton–proton collisions at $$\sqrt{s} = 13\,\text {TeV} $$ s = 13 TeV journal April 2019
Search for production of four top quarks in final states with same-sign or multiple leptons in proton–proton collisions at $$\sqrt{s}=13$$ $$\,\text {TeV}$$ journal January 2020
Two-loop splitting in double parton distributions journal January 2019
Sum rule improved double parton distributions in position space text January 2020
Search for standard model production of four top quarks with same-sign and multilepton final states in proton–proton collisions at $\sqrt{s} = 13\,\text {TeV} $ text January 2018
Two-loop splitting in double parton distributions text January 2019
Sum rule improved double parton distributions in position space text January 2020
Search for supersymmetry in the all-hadronic final state using top quark tagging in pp collisions at √s =13 TeV text January 2017
Search for four-top-quark production in the single-lepton and opposite-sign dilepton final states in pp collisions at √s=13 TeV with the ATLAS detector text January 2019
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Search for Heavy Neutral Leptons in Events with Three Charged Leptons in Proton-Proton Collisions at s =13 TeV text January 2018
Search for production of four top quarks in final states with same-sign or multiple leptons in proton–proton collisions at $\sqrt{s}=13$$\,\text {TeV}$ text January 2020
Search for resonant production of second-generation sleptons with same-sign dimuon events in proton-proton collisions at √s=13TeV text January 2018
Search for resonant production of second-generation sleptons with same-sign dimuon events in proton-proton collisions at √s=13TeV text January 2019
Two-loop splitting in double parton distributions text January 2019
Same-sign top pair plus $W$ production in flavor changing vector and scalar models text January 2018
Search for resonant production of second-generation sleptons with same-sign dimuon events in proton-proton collisions at $\sqrt{s} =$ 13 TeV text January 2018

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