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Measurement of the Forward-Backward Charge Asymmetry in Top-Quark Pair Production
V. M. Abazov, B. Abbott, M. Abolins, B. S. Acharya, M. Adams, T. Adams, E. Aguiló, S. H. Ahn, M. Ahsan, G. D. Alexeev, G. Alkhazov, G. Alverson, G. A. Alves, M. Anastasoaie, L. S. Ancu, T. Andeen, S. Anderson, B. Andrieu, M. S. Anzelc, Y. Arnoud, M. Arov, M. Arthaud, A. Askew, B. Åsman, A. C. S. Assis Jesus, O. Atramentov, C. Autermann, C. Ávila, C. Ay, F. Badaud, A. Baden, L. Bagby, B. Baldin, D. V. Bandurin, S. Banerjee, P. Banerjee, E. Barberis, A.-F. Barfuss, P. Bargassa, P. Baringer, J. Barreto, J. F. Bartlett, U. Bassler, D. Bauer, S. Beale, A. Bean, M. Begalli, M. Begel, C. Bélanger-Champagne, L. Bellantoni, A. Bellavance, J. F. Benitez, S. B. Beri, G. Bernardi, R. Bernhard, I. A. Bertram, M. Besançon, R. Beuselinck, V. A. Bezzubov, P. C. Bhat, V. Bhatnagar, C. Biscarat, G. Blazey, F. Blekman, S. Blessing, D. Blöch, K. Bloom, A. Boehnlein, D. Boline, T. Bolton, G. Borissov, T. Bose, A. Brandt, R. Brock, G. Brooijmans, A. Bross, D. Brown, N. J. Buchanan, D. Buchholz, M. Buehler, V. Buescher, V. Bunichev, S. Burdin, S. Bürke, T. H. Burnett, C. P. Buszello, J. M. Butler, P. Calfayan, S. Calvet, J. Cammin, W. Carvalho, N. M. Cason, H. Castilla-Valdez, S. Chakrabarti, D. Chakraborty, K. M. Chan, A. Chandra, F. Charles, E. Cheu, F. Chevallier, D. K. Cho, S. Choi, B. C. Choudhary, L. Christofek, T. Christoudias, S. Cihangir, D. R. Claes, Y. Coadou, M. Cooke, W. E. Cooper, M. Corcoran, F. Couderc, M.-C. Cousinou, S. Cŕéṕe-Renaudin, D. Cutts, M. Ćwiok, H. da Motta, A. Das, G. Davies, K. De, S. J. de Jong, E. De La Cruz–Burelo, C. De Oliveira Martins, J. Degenhardt, F. Déliot, M. Demarteau, R. Demina, D. Denisov, S. P. Denisov, S. Desai, H. T. Diehl, M. Diesburg, A. Dominguez, H. Dong, L. Dudko, L. Duflot, S. R. Dugad, D. Duggan, A. Duperrin, J. Dyer, A. Dyshkant, M. Eads, D. Edmunds, J. Ellison, V. D. Elvira, Y. Enari, S. C. Eno, P. Ermolov, H. Evans, A. Evdokimov, В. Н. Евдокимов, A. V. Ferapontov, T. Ferbel, F. Fiedler, F. Filthaut, W. C. Fisher, H. E. Fisk, M. Ford, M. Fortner, H. Fox, S. Fu, S. Fuess, T. Gadfort, Cristina Galea, E. Gallas, E. Galyaev, C. Garcı́a, A. Garcia-Bellido, V. Gavrilov, P. Gay, W. Geist, D. Gelé, C. E. Gerber, Y. Gershtein, D. Gillberg, G. Ginther, N. Gollub, B. Gómez, A. G. Goussiou, P. D. Grannis, H. Greenlee, Z. D. Greenwood, E. M. Gregores, G. Grenier, Ph. Gris, J.-F. Grivaz, A. Grohsjean, S. Grünendahl, M. Grünewald, J. Guo, F. Guo, P. Gutierrez, G. Gutiérrez, A. Haas, N. J. Hadley, P. Haefner, S. Hagopian, J. Haley, I. Hall, R. E. Hall, L. Han, K. Hanagaki, K. Harder, A. Harel, R. D. Harrington, J. M. Hauptman, R. Hauser, J. Hays, T. Hebbeker, D. Hedin, J. G. Hegeman, J. M. Heinmiller, A. P. Heinson, U. Heintz, C. Hensel, K. Herner, G. Hesketh, M. D. Hildreth, R. Hirosky, J. D. Hobbs, B. Hoeneisen, H. Hoeth, M. Hohlfeld, S. J. Hong, S. Hossain, P. Houben, Y. Hu, Z. Hubáček, V. Hynek, I. Iashvili, R. Illingworth, A. S. Ito, S. Jabeen, M. Jaffré, S. Jain, K. Jakobs, C. Jarvis, R. Jesik, K. A. Johns, C. A. Johnson, M. Johnson, A. Jonckheere, P. Jonsson, D. Käfer, E. Kajfasz, A. Kalinin, J. R. Kalk, J. M. Kalk, S. Kappler, D. Karmanov, P. A. Kasper, I. Katsanos, D. Kau, R. Kaur, V. Kaushik, R. Kehoe, S. Kermiche, N. Khalatyan, A. Khanov, A. Kharchilava, Y. M. Kharzheev, D. Khatidze, T. J. Kim, M. H. Kirby, M. Kirsch, B. Klima, J. M. Kohli, J.‐P. Konrath, M. Kopál, V. M. Korablev, A. V. Kozelov, D. Krop, T. Kühl, Arun Kumar, S. Kunori, A. Kupčo, T. Kurča, J. Kvita, F. Lacroix, D. Lam, S. Lammers, G. Landsberg, P. Lebrun, W. M. Lee, A. Leflat, F. Lehner, J. Lellouch, J. Levêque, P. Lewis, J. Li, Q. Li, L. Li, S. M. Lietti, J. G. R. Lima, D. Lincoln, J. Linnemann, V. V. Lipaev, R. Lipton, Y. Liu, Z. Liu, L. Lobo, A. Lobodenko, M. Lokajı́ček, P. Love, H. J. Lubatti, A. L. Lyon, A. K. A. Maciel, D. Mackin, R. J. Madaras, P. Mättig, C. Magass, A. Magerkurth, P. Mal, H. B. Malbouisson, S. Malik, V. L. Malyshev, H. S. Mao, Y. Maravin, B. Martin, R. McCarthy, A. Melnitchouk, Andre David Tinoco Mendes, L. Mendoza, P. G. Mercadante, M. Merkin, K. W. Merritt, J. Meyer, A. Meyer, T. Millet, J. Mitrevski, J. Molina, R. K. Mommsen, N. K. Mondal, R. W. Moore, T. Moulik, G. S. Muanza, M. Mulders, M. Mulhearn, O. Mundal, L. Mundim, M. Naimuddin, M. Narain, N. A. Naumann, H. A. Neal, J. P. Negret, P. Neustroev, H. Nilsen, H. Nogima, A. Nomerotski, S. F. Novaes, T. Nunnemann, V. O’Dell, D. C. O’Neil, G. Obrant, C. Ochando, D. Onoprienko, N. Oshima, J. Osta, R. Otec, G. J. Otero y Garzón, M. Owen, P. Padley, M. Pangilinan, N. Parashar, S.-J. Park, Sung Keun Park, J. A. Parsons, R. Partridge, N. Parua, A. Patwa, G. Pawloski, B. Penning, M. Perfilov, Κ. Peters, Y. Peters, P. Pétroff, M. Petteni, R. Piegaia, J. Piper, M.-A. Pleier, P. L. M. Podesta-Lerma, V. M. Podstavkov, Y. Pogorelov, M. E. Pol, P. Polozov, B. G. Pope, А. В. Попов, C. T. Potter, W. L. Prado Da Silva, H. Prosper, S. Protopopescu, J. Qian, A. Quadt, B. Quinn, A. Rakitine, M. S. Rangel, K. Ranjan, P. N. Ratoff, P. Renkel, S. Reucroft, P. Rich, M. Rijssenbeek, I. Ripp-Baudot, F. Rizatdinova, S. Robinson, R. F. Rodrigues, M. Rominsky, C. Royon, P. Rubinov, R. Ruchti, G. Safronov, G. Sajot, A. Sánchez-Hernández, M. P. Sanders, A. Santoro, G. Savage, L. Sawyer, T. Scanlon, D. Schaile, R. D. Schamberger, Y. Scheglov, H. Schellman, P. Schieferdecker, T. Schliephake, C. Schwanenberger, R. Schwienhorst, J. Sekaric, H. Severini, E. Shabalina, M. Shamim, V. Shary, A. A. Shchukin, R. K. Shivpuri, V. Siccardi, V. Šimák, V. Sirotenko, P. Skubic, P. Slattery, D. Smirnov, J. Snow, G. R. Snow, S. Söldner‐Rembold, L. Sonnenschein, A. Sopczak, M. Sosebee, K. Soustružnı́k, M. Souza, B. Spurlock, J. Stark, J. Steele, V. Stolin, D. A. Stoyanova, J. Strandberg, S. Strandberg, M. A. Strang, M. Strauss, E. Strauß, R. Ströhmer, D. Strom, L. Stutte, S. Sumowidagdo, P. Svoisky, A. Sznajder, M. Talby, P. Tamburello, A. J. Tanasijczuk, W. Taylor, J. Temple, B. Tiller, F. Tissandier, M. Titov, V. V. Tokmenin, T. Toole, I. Torchiani, T. Trefzger, D. Tsybychev, B. Tuchming, C. Tully, P. M. Tuts, R. Unalan, S. Uvarov, S. Uzunyan, B. Vachon, P. J. van den Berg, R. Van Kooten, W. M. van Leeuwen, N. Varelas, E. W. Varnes, I. A. Vasilyev, M. Vaupel, P. Verdier, L. S. Vertogradov, M. Verzocchi, F. Villeneuve-Seguier, P. Vint, P. Vokac, E. von Toerne, M. Voutilainen, R. G. Wagner, H. D. Wahl, L. Wang, M. Wang, J. Warchol, G. Watts, M. Wayne, M. Weber, G. Weber, Andreas Wenger, N. Wermes, M. Wetstein, A. White, D. Wicke, G. Wilson, S. J. Wimpenny, M. Wobisch, D. Wood, T. R. Wyatt, Y. Xie, S. Yacoob, R. Yamada, M. Yan, T. Yasuda, Y. A. Yatsunenko, K. Yip, H. D. Yoo, S. W. Youn, J. Yu, A. Zatserklyaniy, C. Zeitnitz, T. Zhao, B. Zhou, J. Zhu, M. Zieliński, D. Ziemińska, A. Ziemiński, L. Živković, V. Zutshi, E. G. Zverev
Bibliographic record
VenuePhysical Review Letters · 2008
Typearticle
Languageen
FieldPhysics and Astronomy
TopicParticle physics theoretical and experimental studies
Canadian institutionsUniversity of Alberta
FundersSecretaría de Ciencia y Técnica, Universidad de Buenos AiresInstitut National de Physique Nucléaire et de Physique des ParticulesScience and Technology Facilities CouncilConsejo Nacional de Investigaciones Científicas y TécnicasNatural Sciences and Engineering Research Council of CanadaFundação para o Desenvolvimento da UNESPCentre National de la Recherche ScientifiqueU.S. Department of EnergyVetenskapsrådetConselho Nacional de Desenvolvimento Científico e TecnológicoBundesministerium für Bildung und ForschungFundação de Amparo à Pesquisa do Estado de São PauloCoordenação de Aperfeiçoamento de Pessoal de Nível SuperiorRussian Foundation for Basic ResearchFundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de JaneiroWestern Canada Research GridKorea Science and Engineering FoundationDepartment of Science and Technology, Ministry of Science and Technology, IndiaGrantová Agentura České RepublikyDepartamento Administrativo de Ciencia, Tecnología e Innovación (COLCIENCIAS)Federal Agency for Science and InnovationDeutsche ForschungsgemeinschaftAlexander von Humboldt-StiftungFermilabScience Foundation IrelandNational Science Foundation
KeywordsPhysicsTevatronAsymmetryParticle physicsJet (fluid)Top quarkFermilabLeptonPair productionColliderNuclear physicsProduction (economics)Charge (physics)QuarkLarge Hadron ColliderElectron
Abstract
We present the first measurement of the integrated forward-backward charge asymmetry in top-quark--top-antiquark pair ($t\overline{t}$) production in proton-antiproton ($p\overline{p}$) collisions in the $\mathrm{\text{lepton}}+\mathrm{\text{jets}}$ final state. Using a $b$-jet tagging algorithm and kinematic reconstruction assuming $t\overline{t}+X$ production and decay, a sample of $0.9\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of data, collected by the D0 experiment at the Fermilab Tevatron Collider, is used to measure the asymmetry for different jet multiplicities. The result is also used to set upper limits on $t\overline{t}+X$ production via a ${Z}^{\ensuremath{'}}$ resonance.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.001
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.001
Threshold uncertainty score0.004
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
Opus teacher head0.023
GPT teacher head0.272
Teacher spread0.249 · how far apart the two teachers sit on this one work
Validation status
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
The models applied no category: nothing in the taxonomy fit this work.
Study designBench or experimental
Domainnot available
GenreEmpirical
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".
Quick stats
Citations238
Published2008
Admission routes2
Has abstractyes