Search for pair-produced third-generation squarks decaying via charm quarks or in compressed supersymmetric scenarios in pp collisions at √s =8TeV with the ATLAS detector

ATLAS Collaboration

doi:10.1103/PhysRevD.90.052008

Search for pair-produced third-generation squarks decaying via charm quarks or in compressed supersymmetric scenarios in pp collisions at √s =8TeV with the ATLAS detector

ATLAS Collaboration

Aix-Marseille Université
University of Oklahoma
Academia Sinica, Institute Of Physics
Laboratoire de l'Accélérateur Linéaire
Azerbaijan Academy of Sciences
University of Amsterdam
Oklahoma State University
Michigan State University
University of Toronto
Tel Aviv University
Technion - Israel Institute of Technology
European Organization for Nuclear Research
Stockholm University
Oskar Klein Centre
INFN Sezione di Trieste
Abdus Salam International Centre for Theoretical Physics
King's College London
Agh University of Science and Technology Faculty of Computer Science
Brookhaven National Laboratory
Yale University
Universität München
Rutherford Appleton Laboratory
University of Belgrade
Lisboa
University of Granada
University of Bern
Boston University
Joint Institute for Nuclear Research, Dubna
INFN Roma Tor Vergata
University of Rome “Tor Vergata”
Lund University
University of Tokyo
P.N. Lebedev Physical Institute of the Russian Academy of Sciences
INFN Sezione di Bologna
University of Bologna
University of Victoria
LTHE (UMR 5564 CNRS/IRD/Université de Grenoble)
Instituto de Física La Plata
Horia Hulubei National Institute of Physics and Nuclear Engineering
University of Geneva
National Technical University of Athens
and Physics University of Udine
Sezione INFN di Milano
University of Chicago
University of Birmingham
Lancaster University
University of Liverpool
University of Manchester
Universités Paris VI and VII
University of Cambridge
Université Savoie Mont Blanc
INFN Sezione di Napoli
University of Naples Federico II
Niels Bohr Institutet
Queen Mary University of London
Columbia University
High Energy Accelerator Research Organization (KEK)
Instituto de Biofisica da UFRJ
Brandeis University
University of Michigan, Ann Arbor
University of Coimbra
Faculdade de Ciências, Universidade de Lisboa
University of Freiburg
The University of Sheffield
University of Heidelberg
University of Milano
University of Athens
Technical University Dresden
Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
LNF-INFN
National Research Nuclear University MEPhI
Slovak Academy of Sciences
Sezione di Roma
University of Oxford
Stanford Linear Accelerator Center
Duke University
Universite de Montreal
c/o DESY
Bogazici University
Universidad Autónoma de Madrid
University Bonn
Institute for Theoretical and Experimental Physics
Argonne National Laboratory
Comenius University
University of Illinois
Universität Siegen
Czech Technical University in Prague
University of Johannesburg
TRIUMF
University Roma Tre
Universite Paris-Saclay
Aristotle University of Thessaloniki
University of Rome
Institute of High Energy Physics, Chinese Academy of Sciences
Charles University
Institute for Nuclear Physics
University of Wisconsin-Madison
Bergische Universität Gesamthochschule Wuppertal
Weizmann Institute of Science Israel
University of Melbourne
Sezione di Genova
University of Genoa
Max-Planck-Institut für Physik
Ernest Orlando Lawrence Berkeley National Laboratory
Harvard University
University of Sussex
University of Glasgow
University of California at Santa Cruz
California State University, Fresno
Tufts University
Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
University of Pisa
University of Warwick
Gaziantep University
Stony Brook University
McGill University
Carleton University
UMass Amherst
Université Hassan II
York University
University of Regina
Humboldt-Universität zu Berlin
University College London
Louisiana Tech University
Royal Holloway University of London
Radboud University
University of Edinburgh
University of Pittsburgh
Georg-August-Universität Göttingen
University of Sydney
University of Washington
Johannes Gutenberg University
B. I. Stepanov Institute of Physics
Institute of Physics of the Czech Academy of Sciences
Moscow State University
Kurchatov Institute
University of São Paulo
State University of New York Albany
Université Blaise Pascal
Université Mohamed Premier
University of Texas at Arlington
Tokyo Metropolitan University
University of Oregon
University of Pennsylvania School of Arts and Sciences
Uppsala University
University of the Witwatersrand, Johannesburg
Universidad Técnica Federico Santa María
Indiana University Bloomington
University of Bergen
Simon Fraser University
University of Oslo
Northern Illinois University
University of Dortmund
University of Alberta
University of Valencia
Ankara University
Southern Methodist University
University of Calabria
Pontificia Universidad Católica de Chile
Federal University of Juiz de Fora (UFJF)
Dogus University
Tomsk State University
Iowa State University
Shandong University
Nanjing University
Kobe University
Faculté des Sciences Rabat
University of Arizona
Sezione di Lecce
Palacky University Olomouc
University of Ljubljana
University of Belgrade
INFN Sezione di Pavia
University of Pavia
Università di Napoli Parthenope
Institute of Particle Physics
Long Beach VA and University of California
New York University
Tbilisi State University
Federal University of Sao Joao del Rei (UFSJ)
Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa
University of São Paulo
Justus-Liebig-Universität Giessen
Cadi Ayyad University
Osaka University
Petersburg Nuclear Physics Institute (PNPI)
St. Petersburg State Polytechnical University
University of British Columbia
The Chinese University of Hong Kong
University of Innsbruck
The Ohio State University
University of Science and Technology of China
Centre National de l'Energie des Sciences Techniques Nucleaires
University of the Aegean
Centro de Física Nuclear da Universidade de Lisboa
University of New Mexico
University of Salento
Pompeu Fabra University (UPF)
Yerevan Physics Institute
University of Cape Town
University of Tsukuba
Nagoya University
Shinshu University
Tokyo Institute of Technology
Waseda University
The University of Texas at Austin
Kyoto University
University of Texas
The University of Adelaide
Tbilisi State University
Ilia State University (ISU)
KTH Royal Institute of Technology
Kyushu University
Ochanomizu University
Manhattan College
Novosibirsk State University
Shanghai Jiao Tong University
Universidad Antonio Narino
National Institute of Science Education and Research
University of Iowa
Hampton University
Moscow Institute of Physics and Technology
Hiroshima Institute of Technology
Okayama University
Universidade de Minho
University 'Politehnica' of Bucharest
West University in Timisoara
Universidad de Buenos Aires
Jagiellonian University
International School of Advanced Studies
National Institute for Research and Development of Isotopic and Molecular Technologies
University of South Carolina
Université Paris-Sud
University of Würzburg
Sun Yat-Sen University
Nagasaki Institute of Applied Science
TOBB University of Economics and Technology
Kyoto University of Education
Ritsumeikan University Biwako-Kusatsu Campus
Massachusetts Institute of Technology
Wigner Research Centre for Physics
Turkish Atomic Energy Authority
Universität Hamburg
University of KwaZulu-Natal
National Centre for Particle and High Energy Physics
Gazi University
University Malaya

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

Résumé

Results of a search for supersymmetry via direct production of third-generation squarks are reported, using 20.3fb-1 of proton-proton collision data at s=8TeV recorded by the ATLAS experiment at the LHC in 2012. Two different analysis strategies based on monojetlike and c-tagged event selections are carried out to optimize the sensitivity for direct top squark-pair production in the decay channel to a charm quark and the lightest neutralino (t∼1→c+χ∼10) across the top squark-neutralino mass parameter space. No excess above the Standard Model background expectation is observed. The results are interpreted in the context of direct pair production of top squarks and presented in terms of exclusion limits in the (mt∼1, mχ∼10) parameter space. A top squark of mass up to about 240 GeV is excluded at 95% confidence level for arbitrary neutralino masses, within the kinematic boundaries. Top squark masses up to 270 GeV are excluded for a neutralino mass of 200 GeV. In a scenario where the top squark and the lightest neutralino are nearly degenerate in mass, top squark masses up to 260 GeV are excluded. The results from the monojetlike analysis are also interpreted in terms of compressed scenarios for top squark-pair production in the decay channel t∼1→b+ff′+χ∼10 and sbottom pair production with b∼1→b+χ∼10, leading to a similar exclusion for nearly mass-degenerate third-generation squarks and the lightest neutralino. The results in this paper significantly extend previous results at colliders.

langue originale	Anglais
Numéro d'article	052008
journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	90
Numéro de publication	5
Les DOIs	https://doi.org/10.1103/PhysRevD.90.052008
état	Publié - 24 sept. 2014
Modification externe	Oui

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10.1103/PhysRevD.90.052008

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@article{375de319d433449aa84adefd1c0b5601,

title = "Search for pair-produced third-generation squarks decaying via charm quarks or in compressed supersymmetric scenarios in pp collisions at √s =8TeV with the ATLAS detector",

abstract = "Results of a search for supersymmetry via direct production of third-generation squarks are reported, using 20.3fb-1 of proton-proton collision data at s=8TeV recorded by the ATLAS experiment at the LHC in 2012. Two different analysis strategies based on monojetlike and c-tagged event selections are carried out to optimize the sensitivity for direct top squark-pair production in the decay channel to a charm quark and the lightest neutralino (t∼1→c+χ∼10) across the top squark-neutralino mass parameter space. No excess above the Standard Model background expectation is observed. The results are interpreted in the context of direct pair production of top squarks and presented in terms of exclusion limits in the (mt∼1, mχ∼10) parameter space. A top squark of mass up to about 240 GeV is excluded at 95\% confidence level for arbitrary neutralino masses, within the kinematic boundaries. Top squark masses up to 270 GeV are excluded for a neutralino mass of 200 GeV. In a scenario where the top squark and the lightest neutralino are nearly degenerate in mass, top squark masses up to 260 GeV are excluded. The results from the monojetlike analysis are also interpreted in terms of compressed scenarios for top squark-pair production in the decay channel t∼1→b+ff′+χ∼10 and sbottom pair production with b∼1→b+χ∼10, leading to a similar exclusion for nearly mass-degenerate third-generation squarks and the lightest neutralino. The results in this paper significantly extend previous results at colliders.",

author = "\{ATLAS Collaboration\} and G. Aad and B. Abbott and J. Abdallah and \{Abdel Khalek\}, S. and O. Abdinov and R. Aben and B. Abi and M. Abolins and Abouzeid, \{O. S.\} and H. Abramowicz and H. Abreu and R. Abreu and Y. Abulaiti and Acharya, \{B. S.\} and L. Adamczyk and Adams, \{D. L.\} and J. Adelman and S. Adomeit and T. Adye and T. Agatonovic-Jovin and Aguilar-Saavedra, \{J. A.\} and M. Agustoni and Ahlen, \{S. P.\} and F. Ahmadov and G. Aielli and H. Akerstedt and {\AA}kesson, \{T. P.A.\} and G. Akimoto and Akimov, \{A. V.\} and Alberghi, \{G. L.\} and J. Albert and S. Albrand and \{Alconada Verzini\}, \{M. J.\} and M. Aleksa and Aleksandrov, \{I. N.\} and C. Alexa and G. Alexander and G. Alexandre and T. Alexopoulos and M. Alhroob and G. Alimonti and L. Alio and J. Alison and Allbrooke, \{B. M.M.\} and Allison, \{L. J.\} and Allport, \{P. P.\} and J. Almond and O. Davignon and T. Mueller and O. Simard",

note = "Publisher Copyright: {\textcopyright} 2014 CERN, for the ATLAS Collaboration.",

year = "2014",

month = sep,

day = "24",

doi = "10.1103/PhysRevD.90.052008",

language = "English",

volume = "90",

journal = "Physical Review D - Particles, Fields, Gravitation and Cosmology",

issn = "1550-7998",

number = "5",

}

Search for pair-produced third-generation squarks decaying via charm quarks or in compressed supersymmetric scenarios in pp collisions at √s =8TeV with the ATLAS detector. / ATLAS Collaboration.
Dans: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol 90, Numéro 5, 052008, 24.09.2014.

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

TY - JOUR

T1 - Search for pair-produced third-generation squarks decaying via charm quarks or in compressed supersymmetric scenarios in pp collisions at √s =8TeV with the ATLAS detector

AU - ATLAS Collaboration

AU - Aad, G.

AU - Abbott, B.

AU - Abdallah, J.

AU - Abdel Khalek, S.

AU - Abdinov, O.

AU - Aben, R.

AU - Abi, B.

AU - Abolins, M.

AU - Abouzeid, O. S.

AU - Abramowicz, H.

AU - Abreu, H.

AU - Abreu, R.

AU - Abulaiti, Y.

AU - Acharya, B. S.

AU - Adamczyk, L.

AU - Adams, D. L.

AU - Adelman, J.

AU - Adomeit, S.

AU - Adye, T.

AU - Agatonovic-Jovin, T.

AU - Aguilar-Saavedra, J. A.

AU - Agustoni, M.

AU - Ahlen, S. P.

AU - Ahmadov, F.

AU - Aielli, G.

AU - Akerstedt, H.

AU - Åkesson, T. P.A.

AU - Akimoto, G.

AU - Akimov, A. V.

AU - Alberghi, G. L.

AU - Albert, J.

AU - Albrand, S.

AU - Alconada Verzini, M. J.

AU - Aleksa, M.

AU - Aleksandrov, I. N.

AU - Alexa, C.

AU - Alexander, G.

AU - Alexandre, G.

AU - Alexopoulos, T.

AU - Alhroob, M.

AU - Alimonti, G.

AU - Alio, L.

AU - Alison, J.

AU - Allbrooke, B. M.M.

AU - Allison, L. J.

AU - Allport, P. P.

AU - Almond, J.

AU - Davignon, O.

AU - Mueller, T.

AU - Simard, O.

PY - 2014/9/24

Y1 - 2014/9/24

N2 - Results of a search for supersymmetry via direct production of third-generation squarks are reported, using 20.3fb-1 of proton-proton collision data at s=8TeV recorded by the ATLAS experiment at the LHC in 2012. Two different analysis strategies based on monojetlike and c-tagged event selections are carried out to optimize the sensitivity for direct top squark-pair production in the decay channel to a charm quark and the lightest neutralino (t∼1→c+χ∼10) across the top squark-neutralino mass parameter space. No excess above the Standard Model background expectation is observed. The results are interpreted in the context of direct pair production of top squarks and presented in terms of exclusion limits in the (mt∼1, mχ∼10) parameter space. A top squark of mass up to about 240 GeV is excluded at 95% confidence level for arbitrary neutralino masses, within the kinematic boundaries. Top squark masses up to 270 GeV are excluded for a neutralino mass of 200 GeV. In a scenario where the top squark and the lightest neutralino are nearly degenerate in mass, top squark masses up to 260 GeV are excluded. The results from the monojetlike analysis are also interpreted in terms of compressed scenarios for top squark-pair production in the decay channel t∼1→b+ff′+χ∼10 and sbottom pair production with b∼1→b+χ∼10, leading to a similar exclusion for nearly mass-degenerate third-generation squarks and the lightest neutralino. The results in this paper significantly extend previous results at colliders.

AB - Results of a search for supersymmetry via direct production of third-generation squarks are reported, using 20.3fb-1 of proton-proton collision data at s=8TeV recorded by the ATLAS experiment at the LHC in 2012. Two different analysis strategies based on monojetlike and c-tagged event selections are carried out to optimize the sensitivity for direct top squark-pair production in the decay channel to a charm quark and the lightest neutralino (t∼1→c+χ∼10) across the top squark-neutralino mass parameter space. No excess above the Standard Model background expectation is observed. The results are interpreted in the context of direct pair production of top squarks and presented in terms of exclusion limits in the (mt∼1, mχ∼10) parameter space. A top squark of mass up to about 240 GeV is excluded at 95% confidence level for arbitrary neutralino masses, within the kinematic boundaries. Top squark masses up to 270 GeV are excluded for a neutralino mass of 200 GeV. In a scenario where the top squark and the lightest neutralino are nearly degenerate in mass, top squark masses up to 260 GeV are excluded. The results from the monojetlike analysis are also interpreted in terms of compressed scenarios for top squark-pair production in the decay channel t∼1→b+ff′+χ∼10 and sbottom pair production with b∼1→b+χ∼10, leading to a similar exclusion for nearly mass-degenerate third-generation squarks and the lightest neutralino. The results in this paper significantly extend previous results at colliders.

UR - https://www.scopus.com/pages/publications/84907502729

U2 - 10.1103/PhysRevD.90.052008

DO - 10.1103/PhysRevD.90.052008

M3 - Article

AN - SCOPUS:84907502729

SN - 1550-7998

VL - 90

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

IS - 5

M1 - 052008

ER -

Search for pair-produced third-generation squarks decaying via charm quarks or in compressed supersymmetric scenarios in pp collisions at √s =8TeV with the ATLAS detector

Résumé

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