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Title: Search for supersymmetry in events with four or more leptons in root s=8 TeV pp collisions with the ATLAS detector

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL)
Sponsoring Org.:
USDOE SC OFFICE OF SCIENCE (SC)
OSTI Identifier:
1162376
Report Number(s):
BNL-106163-2014-JA
KA1101021
DOE Contract Number:
DE-AC02-98CH10886
Resource Type:
Journal Article
Resource Relation:
Journal Name: PHYSICAL REVIEW D
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Aad G., Abbott, B., Abdallah, J., Khalek, S. Abdel, Abdinov, O., Aben, R., Abi, B., Abolins, M., AbouZeid, O. S., Abramowicz, H., Abreu, H., Abreu, R., Abulaiti, Y., Acharya, B. S., Adamczyk, L., Adams, D. L., Adelman, J., Adomeit, S., Adye, T., and et al. Search for supersymmetry in events with four or more leptons in root s=8 TeV pp collisions with the ATLAS detector. United States: N. p., 2014. Web. doi:10.1103/PhysRevD.90.052001.
Aad G., Abbott, B., Abdallah, J., Khalek, S. Abdel, Abdinov, O., Aben, R., Abi, B., Abolins, M., AbouZeid, O. S., Abramowicz, H., Abreu, H., Abreu, R., Abulaiti, Y., Acharya, B. S., Adamczyk, L., Adams, D. L., Adelman, J., Adomeit, S., Adye, T., & et al. Search for supersymmetry in events with four or more leptons in root s=8 TeV pp collisions with the ATLAS detector. United States. doi:10.1103/PhysRevD.90.052001.
Aad G., Abbott, B., Abdallah, J., Khalek, S. Abdel, Abdinov, O., Aben, R., Abi, B., Abolins, M., AbouZeid, O. S., Abramowicz, H., Abreu, H., Abreu, R., Abulaiti, Y., Acharya, B. S., Adamczyk, L., Adams, D. L., Adelman, J., Adomeit, S., Adye, T., and et al. Thu . "Search for supersymmetry in events with four or more leptons in root s=8 TeV pp collisions with the ATLAS detector". United States. doi:10.1103/PhysRevD.90.052001.
@article{osti_1162376,
title = {Search for supersymmetry in events with four or more leptons in root s=8 TeV pp collisions with the ATLAS detector},
author = {Aad G. and Abbott, B. and Abdallah, J. and Khalek, S. Abdel and Abdinov, O. and Aben, R. and Abi, B. and Abolins, M. and AbouZeid, O. S. and Abramowicz, H. and Abreu, H. and Abreu, R. and Abulaiti, Y. and Acharya, B. S. and Adamczyk, L. and Adams, D. L. and Adelman, J. and Adomeit, S. and Adye, T. and et al.},
abstractNote = {},
doi = {10.1103/PhysRevD.90.052001},
journal = {PHYSICAL REVIEW D},
number = ,
volume = ,
place = {United States},
year = {Thu Sep 04 00:00:00 EDT 2014},
month = {Thu Sep 04 00:00:00 EDT 2014}
}
  • A search for the weak production of charginos and neutralinos decaying to a final state with three leptons (electrons or muons) and missing transverse momentum is presented. The analysis uses 2.06 fb{sup -1} of {radical}s = 7 TeV proton-proton collision data delivered by the Large Hadron Collider and recorded with the ATLAS detector. Observations are consistent with standard model expectations in two signal regions that are either depleted or enriched in Z-boson decays. Upper limits at 95% confidence level are set in R-parity conserving phenomenological minimal supersymmetric and simplified models. For the simplified models, degenerate lightest chargino and next-to-lightest neutralinomore » masses up to 300 GeV are excluded for mass differences from the lightest neutralino up to 300 GeV.« less
  • A generic search for anomalous production of events with at least three charged leptons is presented. The data sample consists of pp collisions at √s=8 TeV collected in 2012 by the ATLAS experiment at the CERN Large Hadron Collider, and corresponds to an integrated luminosity of 20.3 fb -1. Events are required to have at least three selected lepton candidates, at least two of which must be electrons or muons, while the third may be a hadronically decaying tau. Selected events are categorized based on their lepton flavour content and signal regions are constructed using several kinematic variables of interest.more » No significant deviations from Standard Model predictions are observed. Model-independent upper limits on contributions from beyond the Standard Model phenomena are provided for each signal region, along with prescription to re-interpret the limits for any model. Constraints are also placed on models predicting doubly charged Higgs bosons and excited leptons. For doubly charged Higgs bosons decaying to eτ or μτ, lower limits on the mass are set at 400 GeV at 95% confidence level. For excited leptons, constraints are provided as functions of both the mass of the excited state and the compositeness scale Λ, with the strongest mass constraints arising in regions where the mass equals Λ. In such scenarios, lower mass limits are set at 3.0 TeV for excited electrons and muons, 2.5 TeV for excited taus, and 1.6 TeV for every excited-neutrino flavour.« less
  • A generic search for anomalous production of events with at least three charged leptons is presented. The data sample consists of pp collisions at √s=8 TeV collected in 2012 by the ATLAS experiment at the CERN Large Hadron Collider, and corresponds to an integrated luminosity of 20.3 fb -1 . Events are required to have at least three selected lepton candidates, at least two of which must be electrons or muons, while the third may be a hadronically decaying tau. Selected events are categorized based on their lepton flavour content and signal regions are constructed using several kinematic variables ofmore » interest. No significant deviations from Standard Model predictions are observed. Model-independent upper limits on contributions from beyond the Standard Model phenomena are provided for each signal region, along with prescription to re-interpret the limits for any model. Constraints are also placed on models predicting doubly charged Higgs bosons and excited leptons. For doubly charged Higgs bosons decaying to eτ or μτ, lower limits on the mass are set at 400 GeV at 95% confidence level. For excited leptons, constraints are provided as functions of both the mass of the excited state and the compositeness scale Λ, with the strongest mass constraints arising in regions where the mass equals Λ. In such scenarios, lower mass limits are set at 3.0 TeV for excited electrons and muons, 2.5 TeV for excited taus, and 1.6 TeV for every excited-neutrino flavour.« less