Extraction and validation of a new set of CMS pythia8 tunes from underlying-event measurements
New sets of CMS underlying-event parameters (“tunes”) are presented for the pythia 8 event generator. These tunes use the NNPDF3.1 parton distribution functions (PDFs) at leading (LO), next-to-leading (NLO), or next-to-next-to-leading (NNLO) orders in perturbative quantum chromodynamics, and the str...
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| Veröffentlicht in: | Eur.Phys.J.C 2020, Vol.80 (1), p.4-47, Article 4 |
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| creator | Del Valle, A. Escalante Krätschmer, I. Liko, D. Wulz, C.-E. Chekhovsky, V. Zeid, S. Abu Van Doninck, W. Luetic, J. Starling, E. Ahuja, S. Padula, SandraS Sculac, T. Mesic, B. Finger, M. Busson, P. Chierici, R. Anuar, A. A. Bin Contreras-Campana, C. Leonard, J. Van Onsem, G. P. Nowatschin, D. Baur, S. Husemann, U. Weiler, T. Kontaxakis, P. Tsipolitis, G. Lohan, M. Singh, J. B. Garg, R. B. Mondal, K. Banerjee, S. Tadavani, E. Eskandari Di Florio, A. Abbiendi, G. Borgonovi, L. Piccolo, D. Buontempo, S. Lujan, P. Giannini, L. Spagnolo, P. Organtini, G. Preiato, F. Pacher, L. Ruspa, M. Lee, S. W. Park, S. K. Nam, K. Seo, S. h. Guisao, J. Mejia Shabanov, A. Danilov, M. Klyukhin, V. Konstantinov, D. Peris, A. Delgado de Trocóniz, J. F. Cuevas, J. Folgueras, S. Marco, J. Brondolin, E. Glege, F. Krammer, M. Pierini, M. Gómez Espinosa, T. A. Nessi-Tedaldi, F. Schweiger, K. Seitz, C. Heath, G. P. Paramesvaran, S. Womersley, W. J. Iles, G. Strebler, T. Mackay, C. K. Teodorescu, L. Arcaro, D. Schnaible, C. Gary, J. W. Campagnari, C. Datta, A. Joshi, Y. R. Saunders, M. Yumiceva, F. Apanasevich, L. Mills, C. Varelas, N. Roskes, J. Lee, Y.-J. Roland, G. Kravchenko, I. Morse, D. M. Cooperstein, S. Olsen, J. Gutay, L. Miller, D. H. Spanier, S. Dudero, P. R. Mengke, T. Undleeb, S. Sheldon, P. Ledovskoy, A. Poudyal, N. |
| description | New sets of CMS underlying-event parameters (“tunes”) are presented for the
pythia
8 event generator. These tunes use the NNPDF3.1 parton distribution functions (PDFs) at leading (LO), next-to-leading (NLO), or next-to-next-to-leading (NNLO) orders in perturbative quantum chromodynamics, and the strong coupling evolution at LO or NLO. Measurements of charged-particle multiplicity and transverse momentum densities at various hadron collision energies are fit simultaneously to determine the parameters of the tunes. Comparisons of the predictions of the new tunes are provided for observables sensitive to the event shapes at LEP, global underlying event, soft multiparton interactions, and double-parton scattering contributions. In addition, comparisons are made for observables measured in various specific processes, such as multijet, Drell–Yan, and top quark-antiquark pair production including jet substructure observables. The simulation of the underlying event provided by the new tunes is interfaced to a higher-order matrix-element calculation. For the first time, predictions from
pythia
8 obtained with tunes based on NLO or NNLO PDFs are shown to reliably describe minimum-bias and underlying-event data with a similar level of agreement to predictions from tunes using LO PDF sets. |
| doi_str_mv | 10.1140/epjc/s10052-019-7499-4 |
| format | Article |
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Escalante ; Krätschmer, I. ; Liko, D. ; Wulz, C.-E. ; Chekhovsky, V. ; Zeid, S. Abu ; Van Doninck, W. ; Luetic, J. ; Starling, E. ; Ahuja, S. ; Padula, SandraS ; Sculac, T. ; Mesic, B. ; Finger, M. ; Busson, P. ; Chierici, R. ; Anuar, A. A. Bin ; Contreras-Campana, C. ; Leonard, J. ; Van Onsem, G. P. ; Nowatschin, D. ; Baur, S. ; Husemann, U. ; Weiler, T. ; Kontaxakis, P. ; Tsipolitis, G. ; Lohan, M. ; Singh, J. B. ; Garg, R. B. ; Mondal, K. ; Banerjee, S. ; Tadavani, E. Eskandari ; Di Florio, A. ; Abbiendi, G. ; Borgonovi, L. ; Piccolo, D. ; Buontempo, S. ; Lujan, P. ; Giannini, L. ; Spagnolo, P. ; Organtini, G. ; Preiato, F. ; Pacher, L. ; Ruspa, M. ; Lee, S. W. ; Park, S. K. ; Nam, K. ; Seo, S. h. ; Guisao, J. Mejia ; Shabanov, A. ; Danilov, M. ; Klyukhin, V. ; Konstantinov, D. ; Peris, A. Delgado ; de Trocóniz, J. F. ; Cuevas, J. ; Folgueras, S. ; Marco, J. ; Brondolin, E. ; Glege, F. ; Krammer, M. ; Pierini, M. ; Gómez Espinosa, T. A. ; Nessi-Tedaldi, F. ; Schweiger, K. ; Seitz, C. ; Heath, G. P. ; Paramesvaran, S. ; Womersley, W. J. ; Iles, G. ; Strebler, T. ; Mackay, C. K. ; Teodorescu, L. ; Arcaro, D. ; Schnaible, C. ; Gary, J. W. ; Campagnari, C. ; Datta, A. ; Joshi, Y. R. ; Saunders, M. ; Yumiceva, F. ; Apanasevich, L. ; Mills, C. ; Varelas, N. ; Roskes, J. ; Lee, Y.-J. ; Roland, G. ; Kravchenko, I. ; Morse, D. M. ; Cooperstein, S. ; Olsen, J. ; Gutay, L. ; Miller, D. H. ; Spanier, S. ; Dudero, P. R. ; Mengke, T. ; Undleeb, S. ; Sheldon, P. ; Ledovskoy, A. ; Poudyal, N.</creator><creatorcontrib>Del Valle, A. Escalante ; Krätschmer, I. ; Liko, D. ; Wulz, C.-E. ; Chekhovsky, V. ; Zeid, S. Abu ; Van Doninck, W. ; Luetic, J. ; Starling, E. ; Ahuja, S. ; Padula, SandraS ; Sculac, T. ; Mesic, B. ; Finger, M. ; Busson, P. ; Chierici, R. ; Anuar, A. A. Bin ; Contreras-Campana, C. ; Leonard, J. ; Van Onsem, G. P. ; Nowatschin, D. ; Baur, S. ; Husemann, U. ; Weiler, T. ; Kontaxakis, P. ; Tsipolitis, G. ; Lohan, M. ; Singh, J. B. ; Garg, R. B. ; Mondal, K. ; Banerjee, S. ; Tadavani, E. Eskandari ; Di Florio, A. ; Abbiendi, G. ; Borgonovi, L. ; Piccolo, D. ; Buontempo, S. ; Lujan, P. ; Giannini, L. ; Spagnolo, P. ; Organtini, G. ; Preiato, F. ; Pacher, L. ; Ruspa, M. ; Lee, S. W. ; Park, S. K. ; Nam, K. ; Seo, S. h. ; Guisao, J. Mejia ; Shabanov, A. ; Danilov, M. ; Klyukhin, V. ; Konstantinov, D. ; Peris, A. Delgado ; de Trocóniz, J. F. ; Cuevas, J. ; Folgueras, S. ; Marco, J. ; Brondolin, E. ; Glege, F. ; Krammer, M. ; Pierini, M. ; Gómez Espinosa, T. A. ; Nessi-Tedaldi, F. ; Schweiger, K. ; Seitz, C. ; Heath, G. P. ; Paramesvaran, S. ; Womersley, W. J. ; Iles, G. ; Strebler, T. ; Mackay, C. K. ; Teodorescu, L. ; Arcaro, D. ; Schnaible, C. ; Gary, J. W. ; Campagnari, C. ; Datta, A. ; Joshi, Y. R. ; Saunders, M. ; Yumiceva, F. ; Apanasevich, L. ; Mills, C. ; Varelas, N. ; Roskes, J. ; Lee, Y.-J. ; Roland, G. ; Kravchenko, I. ; Morse, D. M. ; Cooperstein, S. ; Olsen, J. ; Gutay, L. ; Miller, D. H. ; Spanier, S. ; Dudero, P. R. ; Mengke, T. ; Undleeb, S. ; Sheldon, P. ; Ledovskoy, A. ; Poudyal, N. ; CMS Collaboration ; The CMS Collaboration ; Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States) ; Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States) ; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)</creatorcontrib><description>New sets of CMS underlying-event parameters (“tunes”) are presented for the
pythia
8 event generator. These tunes use the NNPDF3.1 parton distribution functions (PDFs) at leading (LO), next-to-leading (NLO), or next-to-next-to-leading (NNLO) orders in perturbative quantum chromodynamics, and the strong coupling evolution at LO or NLO. Measurements of charged-particle multiplicity and transverse momentum densities at various hadron collision energies are fit simultaneously to determine the parameters of the tunes. Comparisons of the predictions of the new tunes are provided for observables sensitive to the event shapes at LEP, global underlying event, soft multiparton interactions, and double-parton scattering contributions. In addition, comparisons are made for observables measured in various specific processes, such as multijet, Drell–Yan, and top quark-antiquark pair production including jet substructure observables. The simulation of the underlying event provided by the new tunes is interfaced to a higher-order matrix-element calculation. For the first time, predictions from
pythia
8 obtained with tunes based on NLO or NNLO PDFs are shown to reliably describe minimum-bias and underlying-event data with a similar level of agreement to predictions from tunes using LO PDF sets.</description><identifier>ISSN: 1434-6044</identifier><identifier>EISSN: 1434-6052</identifier><identifier>DOI: 10.1140/epjc/s10052-019-7499-4</identifier><identifier>PMID: 31976986</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>Analysis ; Astronomy ; Astrophysics and Cosmology ; Charged particles ; Collision dynamics ; Distribution (Probability theory) ; Distribution functions ; Elementary Particles ; Hadrons ; Heavy Ions ; High Energy Physics - Experiment ; Mathematical analysis ; Measurement ; Measurement Science and Instrumentation ; Nuclear Energy ; Nuclear Physics ; Pair production ; Parameters ; Partons ; Physics ; Physics and Astronomy ; PHYSICS OF ELEMENTARY PARTICLES AND FIELDS ; Quantum chromodynamics ; Quantum Field Theories ; Quantum Field Theory ; Quarks ; Regular - Experimental Physics ; Regular Article - Experimental Physics ; Specific gravity ; String Theory ; Substructures ; Transverse momentum</subject><ispartof>Eur.Phys.J.C, 2020, Vol.80 (1), p.4-47, Article 4</ispartof><rights>CERN for the benefit of the CMS collaboration 2019</rights><rights>CERN for the benefit of the CMS collaboration 2019.</rights><rights>COPYRIGHT 2020 Springer</rights><rights>The European Physical Journal C is a copyright of Springer, (2019). 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K.</creatorcontrib><creatorcontrib>Teodorescu, L.</creatorcontrib><creatorcontrib>Arcaro, D.</creatorcontrib><creatorcontrib>Schnaible, C.</creatorcontrib><creatorcontrib>Gary, J. W.</creatorcontrib><creatorcontrib>Campagnari, C.</creatorcontrib><creatorcontrib>Datta, A.</creatorcontrib><creatorcontrib>Joshi, Y. R.</creatorcontrib><creatorcontrib>Saunders, M.</creatorcontrib><creatorcontrib>Yumiceva, F.</creatorcontrib><creatorcontrib>Apanasevich, L.</creatorcontrib><creatorcontrib>Mills, C.</creatorcontrib><creatorcontrib>Varelas, N.</creatorcontrib><creatorcontrib>Roskes, J.</creatorcontrib><creatorcontrib>Lee, Y.-J.</creatorcontrib><creatorcontrib>Roland, G.</creatorcontrib><creatorcontrib>Kravchenko, I.</creatorcontrib><creatorcontrib>Morse, D. M.</creatorcontrib><creatorcontrib>Cooperstein, S.</creatorcontrib><creatorcontrib>Olsen, J.</creatorcontrib><creatorcontrib>Gutay, L.</creatorcontrib><creatorcontrib>Miller, D. H.</creatorcontrib><creatorcontrib>Spanier, S.</creatorcontrib><creatorcontrib>Dudero, P. R.</creatorcontrib><creatorcontrib>Mengke, T.</creatorcontrib><creatorcontrib>Undleeb, S.</creatorcontrib><creatorcontrib>Sheldon, P.</creatorcontrib><creatorcontrib>Ledovskoy, A.</creatorcontrib><creatorcontrib>Poudyal, N.</creatorcontrib><creatorcontrib>CMS Collaboration</creatorcontrib><creatorcontrib>The CMS Collaboration</creatorcontrib><creatorcontrib>Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)</creatorcontrib><creatorcontrib>Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)</creatorcontrib><creatorcontrib>Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)</creatorcontrib><title>Extraction and validation of a new set of CMS pythia8 tunes from underlying-event measurements</title><title>Eur.Phys.J.C</title><addtitle>Eur. Phys. J. C</addtitle><addtitle>Eur Phys J C Part Fields</addtitle><description>New sets of CMS underlying-event parameters (“tunes”) are presented for the
pythia
8 event generator. These tunes use the NNPDF3.1 parton distribution functions (PDFs) at leading (LO), next-to-leading (NLO), or next-to-next-to-leading (NNLO) orders in perturbative quantum chromodynamics, and the strong coupling evolution at LO or NLO. Measurements of charged-particle multiplicity and transverse momentum densities at various hadron collision energies are fit simultaneously to determine the parameters of the tunes. Comparisons of the predictions of the new tunes are provided for observables sensitive to the event shapes at LEP, global underlying event, soft multiparton interactions, and double-parton scattering contributions. In addition, comparisons are made for observables measured in various specific processes, such as multijet, Drell–Yan, and top quark-antiquark pair production including jet substructure observables. The simulation of the underlying event provided by the new tunes is interfaced to a higher-order matrix-element calculation. For the first time, predictions from
pythia
8 obtained with tunes based on NLO or NNLO PDFs are shown to reliably describe minimum-bias and underlying-event data with a similar level of agreement to predictions from tunes using LO PDF sets.</description><subject>Analysis</subject><subject>Astronomy</subject><subject>Astrophysics and Cosmology</subject><subject>Charged particles</subject><subject>Collision dynamics</subject><subject>Distribution (Probability theory)</subject><subject>Distribution functions</subject><subject>Elementary Particles</subject><subject>Hadrons</subject><subject>Heavy Ions</subject><subject>High Energy Physics - Experiment</subject><subject>Mathematical analysis</subject><subject>Measurement</subject><subject>Measurement Science and Instrumentation</subject><subject>Nuclear Energy</subject><subject>Nuclear Physics</subject><subject>Pair production</subject><subject>Parameters</subject><subject>Partons</subject><subject>Physics</subject><subject>Physics and Astronomy</subject><subject>PHYSICS OF ELEMENTARY PARTICLES AND FIELDS</subject><subject>Quantum chromodynamics</subject><subject>Quantum Field Theories</subject><subject>Quantum Field Theory</subject><subject>Quarks</subject><subject>Regular - Experimental Physics</subject><subject>Regular Article - Experimental Physics</subject><subject>Specific gravity</subject><subject>String Theory</subject><subject>Substructures</subject><subject>Transverse momentum</subject><issn>1434-6044</issn><issn>1434-6052</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid>C6C</sourceid><sourceid>BENPR</sourceid><sourceid>DOA</sourceid><recordid>eNqFUk2P0zAQjRCI_YC_sIrgxCG7tuM69gWpqpbdSkVILFyxXGeSumrsYjtl--9xNqVLuSAf7Jl58_zGfll2hdE1xhTdwHatbwJGaEIKhEVRUSEK-iI7x7SkBUvpl8czpWfZRQhrhBChiL_OzkosKiY4O89-3D5Gr3Q0zubK1vlObUytnkLX5Cq38CsPEIdg9vkh3-7jyiiex95CyBvvury3NfjN3ti2gB3YmHegQu-hS-fwJnvVqE2At4f9Mvv-6fbb7L5YfLmbz6aLQleExUIIVGsOjWAEABOkOG5qjbWakArxpaoQNGUaqiIUEz2pk_ZGV7QmqUYJF-VlNh95a6fWcutNp_xeOmXkU8L5Viofjd6ArLBmpCSK0XJJFSvFEngFAqGaoaYUOHF9HLm2_bKDWqc5vNqckJ5WrFnJ1u0kE5QSViWCdyOBC9HIoE0EvdLOWtBR4gmeIIYS6MMIWv3DfT9dyCGHCEaYcbYbFL0_KPLuZw8hyrXrvU0PKklZEsIJZyyhrkdUq9KYxjZu-Nm0auhMuh4ak_JThpMhCC7ps4RDQ8JEeIyt6kOQ84evp1g2YrV3IXhojpoxkoMj5eBIOTpSJkfKwZFyaLz6-zWPbX8smADVCAipZFvwz8P9h_o3yMPs5A</recordid><startdate>2020</startdate><enddate>2020</enddate><creator>Del Valle, A. 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Escalante ; Krätschmer, I. ; Liko, D. ; Wulz, C.-E. ; Chekhovsky, V. ; Zeid, S. Abu ; Van Doninck, W. ; Luetic, J. ; Starling, E. ; Ahuja, S. ; Padula, SandraS ; Sculac, T. ; Mesic, B. ; Finger, M. ; Busson, P. ; Chierici, R. ; Anuar, A. A. Bin ; Contreras-Campana, C. ; Leonard, J. ; Van Onsem, G. P. ; Nowatschin, D. ; Baur, S. ; Husemann, U. ; Weiler, T. ; Kontaxakis, P. ; Tsipolitis, G. ; Lohan, M. ; Singh, J. B. ; Garg, R. B. ; Mondal, K. ; Banerjee, S. ; Tadavani, E. Eskandari ; Di Florio, A. ; Abbiendi, G. ; Borgonovi, L. ; Piccolo, D. ; Buontempo, S. ; Lujan, P. ; Giannini, L. ; Spagnolo, P. ; Organtini, G. ; Preiato, F. ; Pacher, L. ; Ruspa, M. ; Lee, S. W. ; Park, S. K. ; Nam, K. ; Seo, S. h. ; Guisao, J. Mejia ; Shabanov, A. ; Danilov, M. ; Klyukhin, V. ; Konstantinov, D. ; Peris, A. Delgado ; de Trocóniz, J. F. ; Cuevas, J. ; Folgueras, S. ; Marco, J. ; Brondolin, E. ; Glege, F. ; Krammer, M. ; Pierini, M. ; Gómez Espinosa, T. A. ; Nessi-Tedaldi, F. ; Schweiger, K. ; Seitz, C. ; Heath, G. P. ; Paramesvaran, S. ; Womersley, W. J. ; Iles, G. ; Strebler, T. ; Mackay, C. K. ; Teodorescu, L. ; Arcaro, D. ; Schnaible, C. ; Gary, J. W. ; Campagnari, C. ; Datta, A. ; Joshi, Y. R. ; Saunders, M. ; Yumiceva, F. ; Apanasevich, L. ; Mills, C. ; Varelas, N. ; Roskes, J. ; Lee, Y.-J. ; Roland, G. ; Kravchenko, I. ; Morse, D. M. ; Cooperstein, S. ; Olsen, J. ; Gutay, L. ; Miller, D. H. ; Spanier, S. ; Dudero, P. 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R.</creatorcontrib><creatorcontrib>Mengke, T.</creatorcontrib><creatorcontrib>Undleeb, S.</creatorcontrib><creatorcontrib>Sheldon, P.</creatorcontrib><creatorcontrib>Ledovskoy, A.</creatorcontrib><creatorcontrib>Poudyal, N.</creatorcontrib><creatorcontrib>CMS Collaboration</creatorcontrib><creatorcontrib>The CMS Collaboration</creatorcontrib><creatorcontrib>Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)</creatorcontrib><creatorcontrib>Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)</creatorcontrib><creatorcontrib>Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)</creatorcontrib><collection>Springer Nature OA Free Journals</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Gale In Context: Science</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Central (Alumni)</collection><collection>ProQuest Central</collection><collection>Advanced Technologies & Aerospace Database (1962 - current)</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central</collection><collection>Aerospace Database</collection><collection>SciTech Premium Collection</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Advanced Technologies & Aerospace Database</collection><collection>ProQuest Advanced Technologies & Aerospace Collection</collection><collection>Publicly Available Content Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Hyper Article en Ligne (HAL)</collection><collection>Hyper Article en Ligne (HAL) (Open Access)</collection><collection>OSTI.GOV - Hybrid</collection><collection>OSTI.GOV</collection><collection>PubMed Central (Full Participant titles)</collection><collection>DOAJ Directory of Open Access Journals</collection><jtitle>Eur.Phys.J.C</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Del Valle, A. Escalante</au><au>Krätschmer, I.</au><au>Liko, D.</au><au>Wulz, C.-E.</au><au>Chekhovsky, V.</au><au>Zeid, S. Abu</au><au>Van Doninck, W.</au><au>Luetic, J.</au><au>Starling, E.</au><au>Ahuja, S.</au><au>Padula, SandraS</au><au>Sculac, T.</au><au>Mesic, B.</au><au>Finger, M.</au><au>Busson, P.</au><au>Chierici, R.</au><au>Anuar, A. A. Bin</au><au>Contreras-Campana, C.</au><au>Leonard, J.</au><au>Van Onsem, G. P.</au><au>Nowatschin, D.</au><au>Baur, S.</au><au>Husemann, U.</au><au>Weiler, T.</au><au>Kontaxakis, P.</au><au>Tsipolitis, G.</au><au>Lohan, M.</au><au>Singh, J. B.</au><au>Garg, R. B.</au><au>Mondal, K.</au><au>Banerjee, S.</au><au>Tadavani, E. Eskandari</au><au>Di Florio, A.</au><au>Abbiendi, G.</au><au>Borgonovi, L.</au><au>Piccolo, D.</au><au>Buontempo, S.</au><au>Lujan, P.</au><au>Giannini, L.</au><au>Spagnolo, P.</au><au>Organtini, G.</au><au>Preiato, F.</au><au>Pacher, L.</au><au>Ruspa, M.</au><au>Lee, S. W.</au><au>Park, S. K.</au><au>Nam, K.</au><au>Seo, S. h.</au><au>Guisao, J. Mejia</au><au>Shabanov, A.</au><au>Danilov, M.</au><au>Klyukhin, V.</au><au>Konstantinov, D.</au><au>Peris, A. Delgado</au><au>de Trocóniz, J. F.</au><au>Cuevas, J.</au><au>Folgueras, S.</au><au>Marco, J.</au><au>Brondolin, E.</au><au>Glege, F.</au><au>Krammer, M.</au><au>Pierini, M.</au><au>Gómez Espinosa, T. A.</au><au>Nessi-Tedaldi, F.</au><au>Schweiger, K.</au><au>Seitz, C.</au><au>Heath, G. P.</au><au>Paramesvaran, S.</au><au>Womersley, W. J.</au><au>Iles, G.</au><au>Strebler, T.</au><au>Mackay, C. K.</au><au>Teodorescu, L.</au><au>Arcaro, D.</au><au>Schnaible, C.</au><au>Gary, J. W.</au><au>Campagnari, C.</au><au>Datta, A.</au><au>Joshi, Y. R.</au><au>Saunders, M.</au><au>Yumiceva, F.</au><au>Apanasevich, L.</au><au>Mills, C.</au><au>Varelas, N.</au><au>Roskes, J.</au><au>Lee, Y.-J.</au><au>Roland, G.</au><au>Kravchenko, I.</au><au>Morse, D. M.</au><au>Cooperstein, S.</au><au>Olsen, J.</au><au>Gutay, L.</au><au>Miller, D. H.</au><au>Spanier, S.</au><au>Dudero, P. R.</au><au>Mengke, T.</au><au>Undleeb, S.</au><au>Sheldon, P.</au><au>Ledovskoy, A.</au><au>Poudyal, N.</au><aucorp>CMS Collaboration</aucorp><aucorp>The CMS Collaboration</aucorp><aucorp>Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)</aucorp><aucorp>Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)</aucorp><aucorp>Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Extraction and validation of a new set of CMS pythia8 tunes from underlying-event measurements</atitle><jtitle>Eur.Phys.J.C</jtitle><stitle>Eur. Phys. J. C</stitle><addtitle>Eur Phys J C Part Fields</addtitle><date>2020</date><risdate>2020</risdate><volume>80</volume><issue>1</issue><spage>4</spage><epage>47</epage><pages>4-47</pages><artnum>4</artnum><issn>1434-6044</issn><eissn>1434-6052</eissn><abstract>New sets of CMS underlying-event parameters (“tunes”) are presented for the
pythia
8 event generator. These tunes use the NNPDF3.1 parton distribution functions (PDFs) at leading (LO), next-to-leading (NLO), or next-to-next-to-leading (NNLO) orders in perturbative quantum chromodynamics, and the strong coupling evolution at LO or NLO. Measurements of charged-particle multiplicity and transverse momentum densities at various hadron collision energies are fit simultaneously to determine the parameters of the tunes. Comparisons of the predictions of the new tunes are provided for observables sensitive to the event shapes at LEP, global underlying event, soft multiparton interactions, and double-parton scattering contributions. In addition, comparisons are made for observables measured in various specific processes, such as multijet, Drell–Yan, and top quark-antiquark pair production including jet substructure observables. The simulation of the underlying event provided by the new tunes is interfaced to a higher-order matrix-element calculation. For the first time, predictions from
pythia
8 obtained with tunes based on NLO or NNLO PDFs are shown to reliably describe minimum-bias and underlying-event data with a similar level of agreement to predictions from tunes using LO PDF sets.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><pmid>31976986</pmid><doi>10.1140/epjc/s10052-019-7499-4</doi><tpages>47</tpages><orcidid>https://orcid.org/0000-0002-5230-8387</orcidid><orcidid>https://orcid.org/0000-0003-3154-3123</orcidid><orcidid>https://orcid.org/0000-0003-4036-5242</orcidid><orcidid>https://orcid.org/0000-0002-5524-880X</orcidid><orcidid>https://orcid.org/0000-0002-2431-3381</orcidid><orcidid>https://orcid.org/0000-0001-5990-482X</orcidid><orcidid>https://orcid.org/0000-0001-7305-7102</orcidid><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1434-6044 |
| ispartof | Eur.Phys.J.C, 2020, Vol.80 (1), p.4-47, Article 4 |
| issn | 1434-6044 1434-6052 |
| language | eng |
| recordid | cdi_pubmedcentral_primary_oai_pubmedcentral_nih_gov_6944267 |
| source | DOAJ Directory of Open Access Journals; SpringerLink; EZB Electronic Journals Library; Springer Nature OA Free Journals |
| subjects | Analysis Astronomy Astrophysics and Cosmology Charged particles Collision dynamics Distribution (Probability theory) Distribution functions Elementary Particles Hadrons Heavy Ions High Energy Physics - Experiment Mathematical analysis Measurement Measurement Science and Instrumentation Nuclear Energy Nuclear Physics Pair production Parameters Partons Physics Physics and Astronomy PHYSICS OF ELEMENTARY PARTICLES AND FIELDS Quantum chromodynamics Quantum Field Theories Quantum Field Theory Quarks Regular - Experimental Physics Regular Article - Experimental Physics Specific gravity String Theory Substructures Transverse momentum |
| title | Extraction and validation of a new set of CMS pythia8 tunes from underlying-event measurements |
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