Up and down quark structure of the proton

We report an improved measurement of the valence <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mi>u</a:mi></a:math> and <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:mi>d</c:mi></c:math> quark distributions from the forward-backward asymmetry in the Drell-Yan process using <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"><e:mn>8.6</e:mn><e:mtext> </e:mtext><e:mtext> </e:mtext><e:msup><e:mi>fb</e:mi><e:mrow><e:mo>−</e:mo><e:mn>1</e:mn></e:mrow></e:msup></e:math> of data collected with the D0 detector in <g:math xmlns:g="http://www.w3.org/1998/Math/MathML" display="inline"><g:mi>p</g:mi><g:mover accent="true"><g:mi>p</g:mi><g:mo stretchy="false">¯</g:mo></g:mover></g:math> collisions at <k:math xmlns:k="http://www.w3.org/1998/Math/MathML" display="inline"><k:msqrt><k:mi>s</k:mi></k:msqrt><k:mo>=</k:mo><k:mn>1.96</k:mn></k:math>. This analysis provides the values of new structure parameters that are directly related to the valence up and down quark distributions in the proton. In other experimental results measuring the quark content of the proton, <m:math xmlns:m="http://www.w3.org/1998/Math/MathML" display="inline"><m:mi>d</m:mi></m:math> quark contributions are mixed with those from other quark flavors. In this measurement, the <o:math xmlns:o="http://www.w3.org/1998/Math/MathML" display="inline"><o:mi>u</o:mi></o:math> and <q:math xmlns:q="http://www.w3.org/1998/Math/MathML" display="inline"><q:mi>d</q:mi></q:math> quark contributions are separately extracted by applying a factorization of the QCD and electroweak portions of the forward-backward asymmetry. Published by the American Physical Society 2024

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Journal
Physical review. D/Physical review. D.
Published
2024-11-07
DOI
https://doi.org/10.1103/physrevd.110.l091101
Citations
2
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Particle physics theoretical and experimental studies
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article
Field-Weighted Citation Impact
1.32

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article

Up and down quark structure of the proton

E. Camacho-Pérez, D. R. Claes, A. Grohsjean, E. Kajfasz et al.
2 citations
Physical review. D/Physical review. D.
Particle physics theoretical and experimental studies
1.32
article

Up and down quark structure of the proton

E. Camacho-Pérez, D. R. Claes, A. Grohsjean, E. Kajfasz, T. Head, J. Haley, N. K. Mondal, T. Ferbel, D. Wood, J. Sekaric, W. C. Fisher, C. Tully, H. Castilla-Valdez, H. D. Wahl, S. J. de Jong, R. Madar, G. D. Alexeev, A. Sánchez-Hernández, D. Li, S. Jabeen, R. Coelho Lopes De, G. Blazey, V. A. Kuzmin, S. Desai, C. Ávila, É. Chapon, Shankha Banerjee, G. Wilson, J. Franc, K. Soustružnı́k, X. B. Bu, J. Lellouch, A. P. Heinson, M. Lokajı́ček, В. Н. Евдокимов, A. Meyer, S. Yang, J. Martínez-Ortega, I. A. Bertram, P. N. Ratoff, B. Hoeneisen, B. S. Acharya, M.-A. Pleier, M. Brochmann, W. M. Lee, J.-F. Grivaz, F. Déliot, A. Duperrin, R. Beuselinck, D. Denisov, A. V. Kozelov, O. Brandt, L. Li, M. Cooke, A. Juste Rozas, Y. Gershtein, V. Uzhinsky, A. Dominguez, S. Bhatia, A. Bross, A. Brandt, I. Ripp-Baudot, U. Bassler, G. Borissov, A. Kupčo, C. Schwanenberger, J. P. Agnew, P. D. Grannis, T. Adams, S. Blessing, C. Wang, M. Titov, D. Hedin, Z. Ye, R. Brock, D. Price, J. Qian, V. Bhatnagar, F. Filthaut, S. W. Cho, R. Lipton, S. Dutt, Q. Z. Li, L. Živković, S. Kermiche, S. W. Lee, H. T. Diehl, J. A. García-González, K. Yip, J. M. Hauptman, J. L. Holzbauer, V. Gavrilov, I. Razumov, S. Burdin, H. Liu, Z. Hubáček, H. Fox, D. N. Brown, A. Evdokimov, R. Partridge, S. Snyder, Yi Liu, I. Heredia-De La Cruz, L. Dudko, M. Kaur, Arun Kumar, D. Cutts, H. S. Lee, M. Wang, H. Li, Huong Thi Thanh Nguyen, C. Meyer, U. Heintz, R. Ruchti, V. Bunichev, A. Harel, A. Kharchilava, A. Bean, M. Narain, R. Jesik, A. Jayasinghe, R. Luna-Garcia, K. Harder, P. Pétroff, B. Tuchming, H. A. Neal, E. Johnson, X. Lei, G. Hesketh, M. Jaffré, G. Watts, A. Askew, V. Parihar, R. Van Kooten, M. Hohlfeld, C. Hensel, K. Johns, Y. N. Kharzheev, V. M. Abazov, T. Hoang, N. Parashar, P. Baringer, M. Perfilov, C. Deterre, Alexander Khanov, G. Grenier, G. Bernardi, P. F. Ding, S. K. Park, S. Caughron, D. Zieminska, T. R. Wyatt, V. Simak, G. Golovanov, R. Bernhard, H. E. Fisk, S. Malik, S. Söldner‐Rembold, G. Petrillo, A. Garcia-Bellido, G. Davies, J. Weichert, I. Howley, J. Joshi, S. Lammers, V. V. Lipaev, V. Bazterra, P. Lebrun, R. Illingworth, M. M. Meijer, P. Svoisky, A. S. Santos, L. S. Vertogradov, G. Savage, J. Snow, M. Zielinski, A. Pal, A. Ross, Y. A. Yatsunenko, H. Hegab, J. Warchol, A. Chandra, M. Wayne, J. D. Hobbs, J.M. Kohli, E. E. Boos, G. Ginther, M. Vesterinen, L. Sawyer, C. E. Gerber, M. Merkin, J. T. Linnemann, R. Magaña-Villalba, Y. Peters, B. C. K. Casey, F. Miconi, M. Fortner, M. Prewitt, A. Dubey, J. Hays, B. Baldin, T. Kurča, G. Sajot, D. Karmanov, Joseph Zennamo, A. Fauré, N. Prokopenko, S. B. Beri, A. S. Ito, J. M. Yu, F. Badaud, R. D. Schamberger, J. Clutter, T. Nunnemann, S. Choi, A. Drutskoy, T. Ivanov, E. De La Cruz–Burelo, C. Royon, D. Edmunds, S. Greder, J. F. Bartlett, Y. Xie, V. Buescher, S. Grünendahl, P. Neustroev, M. Mulhearn, P. Jiang, C. L. McGivern, Y. Enari, M. Diesburg, M. Schott, A. Jonckheere, K. Herner, W. M. van Leeuwen, N. Khalatyan, A. Alton, B. Penning, G. Gutierrez, H. Severini, J. D. Mansour, J. M. Hogan, R. Kehoe, E. W. Varnes, K. Augsten, D. Tsybychev, L. Feng, A. Y. Verkheev, B. C. Choudhary, D. A. Stoyanova, Ph. Gris, E. Nagy, J. Cúth, H. Yin, P. Vokac, P. Skubic, D. V. Bandurin, S. Chakrabarti, R. Demina, A. W. Jung, B. Abbott, T. Guillemin, M. Wobisch, V. Shary, R. Hirosky, J. Zhu, A. Quadt, M. Xie, G. Alkhazov, F. Rizatdinova, B. Zhou, M. Eads, T. Scanlon, L. Han, P. Gutierrez, J. Stark, V. L. Malyshev, M. Besançon, P. G. Mercadante, M. Williams, L. Welty-Rieger, G. Chen, S. Fuess, H. Greenlee, W. E. Cooper, C. P. Buszello, L. Bellantoni, J. P. Negret, H. Schellman, F. Couderc, K. Bloom, E. Shabalina, M. Grünewald, H. Evans, I. Katsanos, R. Yamada, D. Lincoln, M. Adams, P. H. Garbincius, M. Strauss, W. Geng, F. Fiedler, Y. Ilchenko, A. V. Popov, V. Hynek, M. Johnson, M. S. Jeong, P. C. Bhat, K. M. Chan, T. G. Zhao, J. Kraus, A. Patwa, P. Rubinov, J. K. Lim, L. Sonnenschein, N. Varelas, R. Schwienhorst, Y.-T. Tsai, N. Osman, T. Yasuda, A. K. A. Maciel, T. Hebbeker, A. L. Lyon, M. P. Sanders, W. Ye, A. Boehnlein, P. Jonsson, J. Orduna, V. M. Podstavkov, D. Boline, M. Begalli, B. Quinn, R. McCarthy, P. Slattery, S. Cihangir, M. Buehler, M. Verzocchi, A. Lobodenko, M. Corcoran, J. Ellison, S. Uzunyan, N. Parua, Y. Scheglov, D. Vilanova, V. V. Tokmenin, G. R. Snow, V. D. Elvira, E. Barberis, R. Nayyar, I. A. Vasilyev, M. Rominsky, D. Menezes, I. Kiselevich, A. Melnitchouk, M. D. Hildreth, L. Suter, S. Atkins, S. P. Denisov, M.-C. Cousinou, L. Bagby, A. A. Shchukin, K. DeVaughan, S. Shaw, I. Iashvili, S. W. Youn, K. Petridis, S. Uvarov
article en
2 citations

Abstract

We report an improved measurement of the valence <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mi>u</a:mi></a:math> and <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:mi>d</c:mi></c:math> quark distributions from the forward-backward asymmetry in the Drell-Yan process using <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"><e:mn>8.6</e:mn><e:mtext> </e:mtext><e:mtext> </e:mtext><e:msup><e:mi>fb</e:mi><e:mrow><e:mo>−</e:mo><e:mn>1</e:mn></e:mrow></e:msup></e:math> of data collected with the D0 detector in <g:math xmlns:g="http://www.w3.org/1998/Math/MathML" display="inline"><g:mi>p</g:mi><g:mover accent="true"><g:mi>p</g:mi><g:mo stretchy="false">¯</g:mo></g:mover></g:math> collisions at <k:math xmlns:k="http://www.w3.org/1998/Math/MathML" display="inline"><k:msqrt><k:mi>s</k:mi></k:msqrt><k:mo>=</k:mo><k:mn>1.96</k:mn></k:math>. This analysis provides the values of new structure parameters that are directly related to the valence up and down quark distributions in the proton. In other experimental results measuring the quark content of the proton, <m:math xmlns:m="http://www.w3.org/1998/Math/MathML" display="inline"><m:mi>d</m:mi></m:math> quark contributions are mixed with those from other quark flavors. In this measurement, the <o:math xmlns:o="http://www.w3.org/1998/Math/MathML" display="inline"><o:mi>u</o:mi></o:math> and <q:math xmlns:q="http://www.w3.org/1998/Math/MathML" display="inline"><q:mi>d</q:mi></q:math> quark contributions are separately extracted by applying a factorization of the QCD and electroweak portions of the forward-backward asymmetry. Published by the American Physical Society 2024

Physical review. D/Physical review. D.Vol. 110(9)
Université Claude Bernard Lyon 1 (FR), University College Dublin (IE), Université Paris-Sud (FR), Northern Illinois University (US), Florida State University (US), University of California, Riverside (US), University of Notre Dame (US), University of Delhi (IN), Purdue University Northwest (US), Institució Catalana de Recerca i Estudis Avançats (ES), Tata Institute of Fundamental Research (IN), Uppsala University (SE), University of Science and Technology of China (CN), Oregon State University (US), Fermi National Accelerator Laboratory (US), State University of New York (US), University of Arizona (US), Radboud University Nijmegen (NL), University of Kansas (US), University of Fribourg (CH), Langston University (US), Iowa State University (US), John Brown University (US), Université Joseph Fourier (FR), Southern Methodist University (US), Johannes Gutenberg University Mainz (DE), Université Clermont Auvergne (FR), Brookhaven National Laboratory (US), Princeton University (US), University of Washington (US), Charles University (CZ), Aix-Marseille Université (FR), Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR), Université Paris-Saclay (FR), University of Michigan (US), University of Manchester (GB), Institut Pluridisciplinaire Hubert Curien (FR), Joint Institute for Nuclear Research (RU), University of Mississippi (US), University of Illinois Chicago (US), Sorbonne Université (FR), Universidade do Estado do Rio de Janeiro (BR), National Institute for Subatomic Physics (NL), Centre de physique des particules de Marseille (FR), Rutgers Sexual and Reproductive Health and Rights (NL), Institute for Theoretical and Experimental Physics (RU), CEA Paris-Saclay (FR), Petersburg Nuclear Physics Institute (RU), Oklahoma State University Oklahoma City (US), Laboratoire de Physique Subatomique et de Cosmologie (FR), Universidad de Los Andes (BO), Institut de Recherche sur les Lois Fondamentales de l'Univers (FR), Czech Technical University in Prague (CZ), Imperial College London (GB), Université Paris 8 (FR), Panjab University (IN), University of Virginia (US), University of Rochester (US), Indiana University (US), Lancaster University (GB), Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (MX), Université de Strasbourg (FR), Universidad San Francisco de Quito (EC), Universidade Federal do ABC (BR), University of Göttingen (DE), Rice University (US), Ludwig-Maximilians-Universität München (DE), University of Oklahoma (US), Universidad del Noreste (MX), Michigan State University (US), RWTH Aachen University (DE), Université Grenoble Alpes (FR), Louisiana Tech University (US)
National Science Foundation, U.S. Department of Energy, Departamento Administrativo de Ciencia, Tecnología e Innovación (COLCIENCIAS), Royal Society, National Research Foundation, Department of Science and Technology, Ministry of Science and Technology, India, Department of Atomic Energy, Government of India, Science Foundation Ireland, Deutsche Forschungsgemeinschaft, Stichting voor Fundamenteel Onderzoek der Materie, National Natural Science Foundation of China, Ministerstvo Školství, Mládeže a Tělovýchovy, Russian Foundation for Basic Research, Bundesministerium für Bildung und Forschung, Chinese Academy of Sciences, Consejo Nacional de Ciencia y Tecnología, Ministry of Education and Science of the Russian Federation, National Research Foundation of Korea, Vetenskapsrådet, Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, National Research Center "Kurchatov Institute", Office of Science, Science and Technology Facilities Council, Institut national des sciences de l'Univers, Fermilab
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Particle physics theoretical and experimental studies
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