Development and validation of HERWIG 7 tunes from CMS underlying-event measurements

. 2021 ; 81 (4) : 312. [epub] 20210412

Status PubMed-not-MEDLINE Jazyk angličtina Země Francie Médium print-electronic

Typ dokumentu časopisecké články

Perzistentní odkaz   https://www.medvik.cz/link/pmid34727148

This paper presents new sets of parameters ("tunes") for the underlying-event model of the H E R W I G 7 event generator. These parameters control the description of multiple-parton interactions (MPI) and colour reconnection in H E R W I G 7 , and are obtained from a fit to minimum-bias data collected by the CMS experiment at s = 0.9 , 7, and 13 Te . The tunes are based on the NNPDF 3.1 next-to-next-to-leading-order parton distribution function (PDF) set for the parton shower, and either a leading-order or next-to-next-to-leading-order PDF set for the simulation of MPI and the beam remnants. Predictions utilizing the tunes are produced for event shape observables in electron-positron collisions, and for minimum-bias, inclusive jet, top quark pair, and Z and W boson events in proton-proton collisions, and are compared with data. Each of the new tunes describes the data at a reasonable level, and the tunes using a leading-order PDF for the simulation of MPI provide the best description of the data.

Academy of Scientific Research and Technology of the Arab Republic of Egypt Egyptian Network of High Energy Physics Cairo Egypt

Adiyaman University Adiyaman Turkey

AGH University of Science and Technology Faculty of Computer Science Electronics and Telecommunications Krakow Poland

Ain Shams University Cairo Egypt

Baylor University Waco USA

Beihang University Beijing China

Benemerita Universidad Autonoma de Puebla Puebla Mexico

Bethel University St Paul Minneapolis; USA St Paul USA

Beykent University Istanbul; Turkey Istanbul Turkey

Bhabha Atomic Research Centre Mumbai India

Bingol University Bingol Turkey

Bogazici University Istanbul Turkey

Boston University Boston USA

Bozok Universitetesi Rektörlügü Yozgat; Turkey Yozgat Turkey

Brandenburg University of Technology Cottbus Germany

British University in Egypt Cairo Egypt

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Brunel University Uxbridge UK

Budker Institute of Nuclear Physics Novosibirsk Russia

Cairo University Cairo Egypt

California Institute of Technology Pasadena USA

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Catholic University of America Washington DC USA

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Centro de Investigaciones Energéticas Medioambientales y Tecnológicas Madrid Spain

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Chulalongkorn University Faculty of Science Department of Physics Bangkok Thailand

College of Engineering and Technology American University of the Middle East Kuwait

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Çukurova University Physics Department Science and Art Faculty Adana Turkey

Department of Physics Isfahan University of Technology Isfahan Iran

Department of Physics Isfahan University of Technology Isfahan Iran Isfahan Iran

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Department of Physics University of Science and Technology of Mazandaran Behshahr Iran

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ETH Zurich Institute for Particle Physics and Astrophysics Zurich Switzerland

Faculty of Physics University of Belgrade Belgrade Serbia

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Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion beam Application Fudan University Shanghai China

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Institute of Nuclear Physics of the Uzbekistan Academy of Sciences Tashkent Uzbekistan

Institute of Nuclear Research ATOMKI Debrecen Hungary

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Institute of Physics University of Debrecen Debrecen Hungary

Institute of Physics University of Debrecen Debrecen Hungary Debrecen Hungary

Institute Rudjer Boskovic Zagreb Croatia

Instituto de Física de Cantabria CSIC Universidad de Cantabria Santander Spain

IPPP Durham University Durham UK

IRFU CEA Université Paris Saclay Gif sur Yvette France

Istanbul Aydin University Application and Research Center for Advanced Studies Istanbul Turkey

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Italian National Agency for New Technologies Energy and Sustainable Economic Development Bologna Italy

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Laboratoire d'Annecy le Vieux de Physique des Particules IN2P3 CNRS Annecy le Vieux France

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