Search for metastable heavy charged particles with large ionisation energy loss in pp collisions at √s = 8 TeV using the ATLAS experiment

ATLAS Collaboration

doi:10.1140/epjc/s10052-015-3609-0

Search for metastable heavy charged particles with large ionisation energy loss in pp collisions at √s = 8 TeV using the ATLAS experiment

ATLAS Collaboration

Aix Marseille Université
University of Oklahoma
Academia Sinica, Institute Of Physics
Azerbaijan Academy of Sciences
University of Amsterdam
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
Northern Illinois University
Universität München
Rutherford Appleton Laboratory
University of Liverpool
University of Belgrade
Georg-August-Universität Göttingen
Lisboa
University of Granada
Boston University
Joint Institute for Nuclear Research, Dubna
INFN Roma Tor Vergata
University of Rome “Tor Vergata”
Lund University
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
National Technical University of Athens
Sezione INFN di Milano
University of Chicago
Columbia University
University of Sussex
INFN Sezione di Napoli
University of Naples Federico II
Niels Bohr Institutet
Queen Mary University of London
University of Cambridge
Université Savoie Mont Blanc
University of Valencia
Ernest Orlando Lawrence Berkeley National Laboratory
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 Geneva
University of Heidelberg
University of Milano
University of Athens
Technical University Dresden
Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
Novosibirsk State University
University of São Paulo
Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
University of Pisa
LNF-INFN
National Research Nuclear University MEPhI
Slovak Academy of Sciences
Sezione di Roma
University of Birmingham
Duke University
Universite de Montreal
c/o DESY
Bogazici University
Universidad Autónoma de Madrid
University Bonn
Institute for Theoretical and Experimental Physics
University of Tokyo
Comenius University
University of Illinois
Universität Siegen
Czech Technical University in Prague
University of Johannesburg
Laboratoire de l'Accélérateur Linéaire
TRIUMF
University Roma Tre
Universite Paris-Saclay
Aristotle University of Thessaloniki
University of Rome
Institute of High Energy Physics, Chinese Academy of Sciences
Yale University
Charles University
Stony Brook University
University of Manchester
Institute for Nuclear Physics
University of Wisconsin-Madison
Bergische Universität Gesamthochschule Wuppertal
University of Melbourne
Sezione di Genova
University of Genoa
Max-Planck-Institut für Physik
Stanford Linear Accelerator Center
University of Oxford
Harvard University
Lancaster University
Kurchatov Institute
University of Glasgow
University of California at Santa Cruz
California State University, Fresno
The Ohio State University
Universités Paris VI and VII
Tufts University
University of Bern
University of Fribourg
Johannes Gutenberg University
University of Warwick
Gaziantep University
McGill University
Carleton University
UMass Amherst
Université Hassan II
York University
Uppsala University
New York University
Royal Holloway University of London
University of Edinburgh
University of Pittsburgh
Humboldt-Universität zu Berlin
University College London
University of Sydney
University of Washington
Argonne National Laboratory
Moscow State University
Kurchatov Institute
The Chinese University of Hong Kong
University of Hong Kong
The Hong Kong University of Science and Technology
State University of New York Albany
Clermont-Auvergne University
Oklahoma State University
University of Texas at Arlington
Tokyo Metropolitan University
University of Oregon
and Physics University of Udine
University of Pennsylvania School of Arts and Sciences
Weizmann Institute of Science Israel
University of the Witwatersrand, Johannesburg
Universidad Técnica Federico Santa María
University of Bergen
Simon Fraser University
University of Oslo
University of Dortmund
University of Alberta
University of Calabria
Ankara University
Shanghai Jiao Tong University
Southern Methodist University
Radboud University
Pontificia Universidad Católica de Chile
Ipatimup Diagnósticos
Federal University of Juiz de Fora (UFJF)
Dogus University
Tomsk State University
Iowa State University
Shandong University
Nanjing University
Tsinghua University
Kobe University
Faculté des Sciences Rabat
University of Arizona
Sezione di Lecce
Indiana University Bloomington
Institute of Physics of the Czech Academy of Sciences
Palacky University Olomouc
University of Ljubljana
INFN Sezione di Pavia
University of Pavia
Università di Napoli Parthenope
Institute of Particle Physics (IPP)
Long Beach VA and University of California
University of British Columbia
Université Mohamed Premier
Tbilisi State University
Federal University of Sao Joao del Rei (UFSJ)
University of São Paulo
Justus-Liebig-Universität Giessen
Cadi Ayyad University
Osaka University
St. Petersburg State Polytechnical University
Nagasaki Institute of Applied Science
University of Science and Technology of China
Centre National de l'Energie des Sciences Techniques Nucleaires
Centro de Física Nuclear da Universidade de Lisboa
University of New Mexico
University of Salento
Louisiana Tech University
Pompeu Fabra University (UPF)
Yerevan Physics Institute
University of Cape Town
University of Tsukuba
B. I. Stepanov Institute of Physics
Nagoya University
Shinshu University
Tokyo Institute of Technology
National Centre for Particle and High Energy Physics
National Tsing Hua University
Waseda University
The University of Texas at Austin
Kyoto University
University of Texas
The University of Adelaide
University of Innsbruck
Tbilisi State University
Ilia State University (ISU)
Kyushu University
Georgian Technical University
Manhattan College
Istanbul Aydin University
University of Würzburg
Hellenic Open University
Universidad Antonio Narino
KTH Royal Institute of Technology
University of Iowa
Hampton University
Moscow Institute of Physics and Technology
Hiroshima Institute of Technology
Okayama University
Universidade de Minho
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
Sun Yat-Sen University
TOBB University of Economics and Technology
Kyoto University of Education
Massachusetts Institute of Technology
Stanford University
Wigner Research Centre for Physics
University Malaya

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

Résumé

Many extensions of the Standard Model predict the existence of charged heavy long-lived particles, such as R-hadrons or charginos. These particles, if produced at the LargeHadron Collider, should bemoving non-relativistically and are therefore identifiable through the measurement of an anomalously large specific energy loss in the ATLAS pixel detector. Measuring heavy long-lived particles through their track parameters in the vicinity of the interaction vertex provides sensitivity to metastable particles with lifetimes from 0.6 ns to 30 ns. A search for such particles with the ATLAS detector at the Large Hadron Collider is presented, based on a data sample corresponding to an integrated luminosity of 18.4 fb^-1 of pp collisions at √s = 8 TeV. No significant deviation from the Standard Model background expectation is observed, and lifetime-dependent upper limits on Rhadrons and chargino production are set. Gluino R-hadrons with 10 ns lifetime and masses up to 1185 GeV are excluded at 95 % confidence level, and so are charginos with 15 ns lifetime and masses up to 482 GeV.

langue originale	Anglais
Numéro d'article	407
journal	European Physical Journal C
Volume	75
Numéro de publication	9
Les DOIs	https://doi.org/10.1140/epjc/s10052-015-3609-0
état	Publié - 1 janv. 2015
Modification externe	Oui

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10.1140/epjc/s10052-015-3609-0

Contient cette citation

@article{e1f220aa09424684904b739d909e2c5c,

title = "Search for metastable heavy charged particles with large ionisation energy loss in pp collisions at √s = 8 TeV using the ATLAS experiment",

abstract = "Many extensions of the Standard Model predict the existence of charged heavy long-lived particles, such as R-hadrons or charginos. These particles, if produced at the LargeHadron Collider, should bemoving non-relativistically and are therefore identifiable through the measurement of an anomalously large specific energy loss in the ATLAS pixel detector. Measuring heavy long-lived particles through their track parameters in the vicinity of the interaction vertex provides sensitivity to metastable particles with lifetimes from 0.6 ns to 30 ns. A search for such particles with the ATLAS detector at the Large Hadron Collider is presented, based on a data sample corresponding to an integrated luminosity of 18.4 fb-1 of pp collisions at √s = 8 TeV. No significant deviation from the Standard Model background expectation is observed, and lifetime-dependent upper limits on Rhadrons and chargino production are set. Gluino R-hadrons with 10 ns lifetime and masses up to 1185 GeV are excluded at 95 \% confidence level, and so are charginos with 15 ns lifetime and masses up to 482 GeV.",

author = "\{ATLAS Collaboration\} and G. Aad and B. Abbott and J. Abdallah and O. Abdinov and R. Aben 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 Affolder, \{A. A.\} and T. Agatonovic-Jovin and J. Agricola and Aguilar-Saavedra, \{J. A.\} and Ahlen, \{S. P.\} and F. Ahmadov and G. Aielli and H. Akerstedt and {\AA}kesson, \{T. P.A.\} 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 T. Alexopoulos and M. Alhroob and G. Alimonti and L. Alio and J. Alison and Alkire, \{S. P.\} and Allbrooke, \{B. M.M.\} and Allport, \{P. P.\} and A. Aloisio and A. Alonso and F. Alonso and C. Alpigiani and A. Altheimer and T. Mueller and O. Simard",

year = "2015",

month = jan,

day = "1",

doi = "10.1140/epjc/s10052-015-3609-0",

language = "English",

volume = "75",

journal = "European Physical Journal C",

issn = "1434-6044",

number = "9",

}

TY - JOUR

T1 - Search for metastable heavy charged particles with large ionisation energy loss in pp collisions at √s = 8 TeV using the ATLAS experiment

AU - ATLAS Collaboration

AU - Aad, G.

AU - Abbott, B.

AU - Abdallah, J.

AU - Abdinov, O.

AU - Aben, R.

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 - Affolder, A. A.

AU - Agatonovic-Jovin, T.

AU - Agricola, J.

AU - Aguilar-Saavedra, J. A.

AU - Ahlen, S. P.

AU - Ahmadov, F.

AU - Aielli, G.

AU - Akerstedt, H.

AU - Åkesson, T. P.A.

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 - Alexopoulos, T.

AU - Alhroob, M.

AU - Alimonti, G.

AU - Alio, L.

AU - Alison, J.

AU - Alkire, S. P.

AU - Allbrooke, B. M.M.

AU - Allport, P. P.

AU - Aloisio, A.

AU - Alonso, A.

AU - Alonso, F.

AU - Alpigiani, C.

AU - Altheimer, A.

AU - Mueller, T.

AU - Simard, O.

PY - 2015/1/1

Y1 - 2015/1/1

N2 - Many extensions of the Standard Model predict the existence of charged heavy long-lived particles, such as R-hadrons or charginos. These particles, if produced at the LargeHadron Collider, should bemoving non-relativistically and are therefore identifiable through the measurement of an anomalously large specific energy loss in the ATLAS pixel detector. Measuring heavy long-lived particles through their track parameters in the vicinity of the interaction vertex provides sensitivity to metastable particles with lifetimes from 0.6 ns to 30 ns. A search for such particles with the ATLAS detector at the Large Hadron Collider is presented, based on a data sample corresponding to an integrated luminosity of 18.4 fb-1 of pp collisions at √s = 8 TeV. No significant deviation from the Standard Model background expectation is observed, and lifetime-dependent upper limits on Rhadrons and chargino production are set. Gluino R-hadrons with 10 ns lifetime and masses up to 1185 GeV are excluded at 95 % confidence level, and so are charginos with 15 ns lifetime and masses up to 482 GeV.

AB - Many extensions of the Standard Model predict the existence of charged heavy long-lived particles, such as R-hadrons or charginos. These particles, if produced at the LargeHadron Collider, should bemoving non-relativistically and are therefore identifiable through the measurement of an anomalously large specific energy loss in the ATLAS pixel detector. Measuring heavy long-lived particles through their track parameters in the vicinity of the interaction vertex provides sensitivity to metastable particles with lifetimes from 0.6 ns to 30 ns. A search for such particles with the ATLAS detector at the Large Hadron Collider is presented, based on a data sample corresponding to an integrated luminosity of 18.4 fb-1 of pp collisions at √s = 8 TeV. No significant deviation from the Standard Model background expectation is observed, and lifetime-dependent upper limits on Rhadrons and chargino production are set. Gluino R-hadrons with 10 ns lifetime and masses up to 1185 GeV are excluded at 95 % confidence level, and so are charginos with 15 ns lifetime and masses up to 482 GeV.

U2 - 10.1140/epjc/s10052-015-3609-0

DO - 10.1140/epjc/s10052-015-3609-0

M3 - Article

AN - SCOPUS:84978026007

SN - 1434-6044

VL - 75

JO - European Physical Journal C

JF - European Physical Journal C

IS - 9

M1 - 407

ER -

Search for metastable heavy charged particles with large ionisation energy loss in pp collisions at √s = 8 TeV using the ATLAS experiment

Résumé

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