Measurement of KS0 and Λ production in tt¯ dileptonic events in pp collisions at √s= 7 TeV with the ATLAS detector

ATLAS Collaboration

doi:10.1140/epjc/s10052-019-7512-y

Measurement of KS0 and Λ production in tt¯ dileptonic events in pp collisions at √s= 7 TeV with the ATLAS detector

ATLAS Collaboration

University Politehnica of Bucharest
Dep Física and CEFITEC of Faculdade de Ciências e Tecnologia
NOVA University Lisbon
University of Lisbon
Department of Physics
Universidad Andrés Bello
CERN
Aix-Marseille Université
University of Oklahoma
University of Massachusetts
University of Adelaide
Azerbaijan National Academy of Sciences
National Institute for Nuclear Physics
University of Pavia
University of Göttingen
Royal Holloway University of London
University of Toronto
University of Copenhagen
University of Sussex
Tel Aviv University
Technion-Israel Institute of Technology
Argonne National Laboratory
Abdus Salam International Centre for Theoretical Physics
The University of Tokyo
Johannes Gutenberg University Mainz
Université Paris-Saclay
AGH University of Science and Technology
Northern Illinois University
Ludwig Maximilian University of Munich
Bogazici University
University of Geneva
Rutherford Appleton Laboratory
University of California at Santa Cruz
Université Clermont Auvergne
Radboud University Nijmegen
Alexandru Ioan Cuza University of Iaşi
Laboratório de Instrumentação e Física Experimental de Partículas
University of Granada
Joint Institute for Nuclear Research
McGill University
CAS - Institute of High Energy Physics
University of Rome Tor Vergata
Kyoto University
Lund University
RAS - P.N. Lebedev Physics Institute
University of Bologna
University of Victoria BC
Horia Hulubei National Institute of Physics and Nuclear Engineering
Humboldt University of Berlin
National Technical University of Athens
University of Amsterdam
Czech Technical University in Prague
The University of Chicago
University of Washington
University of Oregon
University of Birmingham
University of Naples Federico II
Consejo Nacional de Investigaciones Científicas y Técnicas
University of Glasgow
Universidad Autónoma de Madrid
University of Valencia
Universidade Federal do Rio de Janeiro
University of Oxford
Brandeis University
University of Michigan, Ann Arbor
German Electron Synchrotron
Iowa State University
University of Sheffield
Université Paris-Saclay
University of Texas at Austin
Heidelberg University
University of Bern
University of Milan
Columbia University
RAS - Budker Institute of Nuclear Physics
Novosibirsk State University
University of California at Irvine
High Energy Accelerator Research Organization, Tsukuba
Michigan State University
Duke University
University of Montreal
University of Iowa
Queen Mary University of London
Alikhanov Institute for Theoretical and Experimental Physics
Harvard University
Uppsala University
Brookhaven National Laboratory
Comenius University
University of Cape Town
University of Illinois
University of Siegen
University of Science and Technology of China
York University
University of Salento
Stockholm University
Oskar Klein Centre
University of Rome La Sapienza
Cracow
Simon Fraser University
Yale University
University of Texas at Arlington
University of Sydney
Weizmann Institute of Science
University of Bonn
University of Wisconsin-Madison
University of Wuppertal
University of Melbourne
University of Genoa
Max Planck Institute for Physics (Werner Heisenberg Institute)
SLAC National Accelerator Laboratory
Shanghai Jiao Tong University
Lawrence Berkeley National Laboratory
Russian Research Centre Kurchatov Institute
Lancaster University
Mohammed V University in Rabat
University of Cambridge
The California State University
Sorbonne Université
Tufts University
University of Freiburg
Gaziantep University
Bahcesehir University
Stony Brook University
Innsbruck Medical University
University College London
Carleton University
National and Kapodistrian University of Athens
Moscow Engineering Physics Institute
University of Hassan II Casablanca
Université Grenoble Alpes
University of Arizona
University of Manchester
University of Pittsburgh
University of Pisa
Technische Universität Dresden
University of Oslo
Boston University
Institute for High Energy Physics
Lomonosov Moscow State University
University of Liverpool
Institute for High Energy Physics
Ohio State University
University of Johannesburg
Universidad Técnica Federico Santa Maria
Slovak Academy of Sciences
University of Bergen
Oklahoma State University
Academia Sinica - Institute of Physics
Justus Liebig University Giessen
Ankara University
Indiana University Bloomington
University of Calabria
Charles University
University of Minho
Istanbul Bilgi University
Roma Tre University
Palacký University Olomouc
Universidade Federal de Juiz de Fora
Tbilisi State University
TRIUMF
University of Pennsylvania School of Arts and Sciences
Nanjing University
Tsinghua University
Kobe University
Chinese University of Hong Kong
University of Chinese Academy of Sciences
National Tsing Hua University
Aristotle University of Thessaloniki
Czech Academy of Sciences
TU Dortmund University
University of Ljubljana
University of Edinburgh
University of Udine
University of British Columbia
New York University
Shandong University
Universidad de Buenos Aires
Southern Methodist University
Mohamed I University
Pontificia Universidad Católica de Chile
Universidade Federal de São João del-Rei
Universidade de São Paulo
Cadi Ayyad University
University of Warwick
Demokritos National Centre for Scientific Research
University of Coimbra
University of Trento
Tokyo Metropolitan University
Nagasaki Institute of Applied Science
University of Alberta
Ibn Tofail University
West University of Timisoara
University of New Mexico
University of Tsukuba
University of Würzburg
Belarus Academy of Sciences
Shinshu University
University of the Witwatersrand
Osaka University
Nagoya University
Belarusian State University
Tokyo Institute of Technology
University of Texas at Dallas
SUNY Albany
Ivane Javakhishvili Tbilisi State University
Waseda University
Kyushu University
Tomsk State University
Ochanomizu University
University of Belgrade
Istanbul Aydin University
Hong Kong University of Science and Technology
The University of Hong Kong
Universidad Antonio Nariño
KTH Royal Institute of Technology
A. Alikhanian Yerevan Institute of Physics
Hiroshima Institute of Technology
Okayama University
Jagiellonian University in Kraków
Transilvania University of Brasov
National Institute for Research and Development of Isotopic and Molecular Technologies
IN2P3 - Institut National de Physique Nucléaire et de Physique Des Particules
Louisiana Tech University
TOBB University of Economics and Technology
Kyoto University of Education

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9 Citations (Scopus)

Abstract

Measurements of KS0 and Λ production in tt¯ final states have been performed. They are based on a data sample with integrated luminosity of 4.6 fb ^{- 1} from proton–proton collisions at a centre-of-mass energy of 7 TeV, collected in 2011 with the ATLAS detector at the Large Hadron Collider. Neutral strange particles are separated into three classes, depending on whether they are contained in a jet, with or without a b-tag, or not associated with a selected jet. The aim is to look for differences in their main kinematic distributions. A comparison of data with several Monte Carlo simulations using different hadronisation and fragmentation schemes, colour reconnection models and different tunes for the underlying event has been made. The production of neutral strange particles in tt¯ dileptonic events is found to be well described by current Monte Carlo models for KS0 and Λ production within jets, but not for those produced outside jets.

Original language	English
Article number	1017
Journal	European Physical Journal C
Volume	79
Issue number	12
DOIs	https://doi.org/10.1140/epjc/s10052-019-7512-y
Publication status	Published - 1 Dec 2019

ASJC Scopus subject areas

Engineering (miscellaneous)
Physics and Astronomy (miscellaneous)

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10.1140/epjc/s10052-019-7512-y

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@article{5c47000548c64b63a7f488efd4573bb2,

title = "Measurement of KS0 and Λ production in tt¯ dileptonic events in pp collisions at √s= 7 TeV with the ATLAS detector",

abstract = "Measurements of KS0 and Λ production in tt¯ final states have been performed. They are based on a data sample with integrated luminosity of 4.6 fb - 1 from proton–proton collisions at a centre-of-mass energy of 7 TeV, collected in 2011 with the ATLAS detector at the Large Hadron Collider. Neutral strange particles are separated into three classes, depending on whether they are contained in a jet, with or without a b-tag, or not associated with a selected jet. The aim is to look for differences in their main kinematic distributions. A comparison of data with several Monte Carlo simulations using different hadronisation and fragmentation schemes, colour reconnection models and different tunes for the underlying event has been made. The production of neutral strange particles in tt¯ dileptonic events is found to be well described by current Monte Carlo models for KS0 and Λ production within jets, but not for those produced outside jets.",

author = "\{ATLAS Collaboration\} and G. Aad and B. Abbott and Abbott, \{D. C.\} and O. Abdinov and Abud, \{A. Abed\} and K. Abeling and Abhayasinghe, \{D. K.\} and Abidi, \{S. H.\} and AbouZeid, \{O. S.\} and Abraham, \{N. L.\} and H. Abramowicz and H. Abreu and Y. Abulaiti and Acharya, \{B. S.\} and B. Achkar and S. Adachi and L. Adam and Bourdarios, \{C. Adam\} and L. Adamczyk and L. Adamek and J. Adelman and M. Adersberger and A. Adiguzel and S. Adorni and T. Adye and Affolder, \{A. A.\} and Y. Afik and C. Agapopoulou and Agaras, \{M. N.\} and A. Aggarwal and C. Agheorghiesei and Aguilar-Saavedra, \{J. A.\} and F. Ahmadov and Ahmed, \{W. S.\} and X. Ai and G. Aielli and S. Akatsuka and {\AA}kesson, \{T. P.A.\} and E. Akilli and Akimov, \{A. V.\} and Khoury, \{K. Al\} and Alberghi, \{G. L.\} and J. Albert and Verzini, \{M. J.Alconada\} and S. Alderweireldt and M. Aleksa and Aleksandrov, \{I. N.\} and Connell, \{S. H.\} and N. Govender and L. Truong",

note = "Publisher Copyright: {\textcopyright} 2019, CERN for the benefit of the ATLAS collaboration.",

year = "2019",

month = dec,

day = "1",

doi = "10.1140/epjc/s10052-019-7512-y",

language = "English",

volume = "79",

journal = "European Physical Journal C",

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TY - JOUR

T1 - Measurement of KS0 and Λ production in tt¯ dileptonic events in pp collisions at √s= 7 TeV with the ATLAS detector

AU - ATLAS Collaboration

AU - Aad, G.

AU - Abbott, B.

AU - Abbott, D. C.

AU - Abdinov, O.

AU - Abud, A. Abed

AU - Abeling, K.

AU - Abhayasinghe, D. K.

AU - Abidi, S. H.

AU - AbouZeid, O. S.

AU - Abraham, N. L.

AU - Abramowicz, H.

AU - Abreu, H.

AU - Abulaiti, Y.

AU - Acharya, B. S.

AU - Achkar, B.

AU - Adachi, S.

AU - Adam, L.

AU - Bourdarios, C. Adam

AU - Adamczyk, L.

AU - Adamek, L.

AU - Adelman, J.

AU - Adersberger, M.

AU - Adiguzel, A.

AU - Adorni, S.

AU - Adye, T.

AU - Affolder, A. A.

AU - Afik, Y.

AU - Agapopoulou, C.

AU - Agaras, M. N.

AU - Aggarwal, A.

AU - Agheorghiesei, C.

AU - Aguilar-Saavedra, J. A.

AU - Ahmadov, F.

AU - Ahmed, W. S.

AU - Ai, X.

AU - Aielli, G.

AU - Akatsuka, S.

AU - Åkesson, T. P.A.

AU - Akilli, E.

AU - Akimov, A. V.

AU - Khoury, K. Al

AU - Alberghi, G. L.

AU - Albert, J.

AU - Verzini, M. J.Alconada

AU - Alderweireldt, S.

AU - Aleksa, M.

AU - Aleksandrov, I. N.

AU - Connell, S. H.

AU - Govender, N.

AU - Truong, L.

PY - 2019/12/1

Y1 - 2019/12/1

N2 - Measurements of KS0 and Λ production in tt¯ final states have been performed. They are based on a data sample with integrated luminosity of 4.6 fb - 1 from proton–proton collisions at a centre-of-mass energy of 7 TeV, collected in 2011 with the ATLAS detector at the Large Hadron Collider. Neutral strange particles are separated into three classes, depending on whether they are contained in a jet, with or without a b-tag, or not associated with a selected jet. The aim is to look for differences in their main kinematic distributions. A comparison of data with several Monte Carlo simulations using different hadronisation and fragmentation schemes, colour reconnection models and different tunes for the underlying event has been made. The production of neutral strange particles in tt¯ dileptonic events is found to be well described by current Monte Carlo models for KS0 and Λ production within jets, but not for those produced outside jets.

AB - Measurements of KS0 and Λ production in tt¯ final states have been performed. They are based on a data sample with integrated luminosity of 4.6 fb - 1 from proton–proton collisions at a centre-of-mass energy of 7 TeV, collected in 2011 with the ATLAS detector at the Large Hadron Collider. Neutral strange particles are separated into three classes, depending on whether they are contained in a jet, with or without a b-tag, or not associated with a selected jet. The aim is to look for differences in their main kinematic distributions. A comparison of data with several Monte Carlo simulations using different hadronisation and fragmentation schemes, colour reconnection models and different tunes for the underlying event has been made. The production of neutral strange particles in tt¯ dileptonic events is found to be well described by current Monte Carlo models for KS0 and Λ production within jets, but not for those produced outside jets.

UR - https://www.scopus.com/pages/publications/85076507512

U2 - 10.1140/epjc/s10052-019-7512-y

DO - 10.1140/epjc/s10052-019-7512-y

M3 - Article

AN - SCOPUS:85076507512

SN - 1434-6044

VL - 79

JO - European Physical Journal C

JF - European Physical Journal C

IS - 12

M1 - 1017

ER -

Measurement of KS0 and Λ production in tt¯ dileptonic events in pp collisions at √s= 7 TeV with the ATLAS detector

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