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Measurement of charm and beauty production in deep inelastic ep scattering from decays into muons at HERA
S. Chekanov, M. Derrick, S. Magill, B. Musgrave, D. Nicholass, J. Repond, R. Yoshida, M.C.K. Mattingly, P. Antonioli, G. Bari, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, F. Cindolo, M. Corradi, G. Iacobucci, A. Margotti, R. Nania, A. Polini, S. Antonelli, M. Basile, M. Bindi, L. Cifarelli, A. Contin, S. De Pasquale, G. Sartorelli, A. Zichichi, D. Bartsch, I. Brock, H. Hartmann, E. Hilger, H.‐P. Jakob, M. Jüngst, A.-E. Nuncio-Quiroz, E. Paul, U. Samson, V. Schönberg, R. Shehzadi, M. Wlasenko, N. H. Brook, H. F. Heath, J. D. Morris, M. Kaur, P. Kaur, I. Singh, M. Capua, S. Fazio, A. Mastroberardino, M. Schioppa, G. Susinno, E. ̃Tassi, J. Y. Kim, Z. A. Ibrahim, F. Mohamad Idris, B. Kamaluddin, W. A. T. Wan Abdullah, Ning Ye, Z. Ren, F. Sciulli, J. J. Chwastowski, A. Eskreys, J. Figiel, A. Galas, K. Olkiewicz, B. Pawlik, P. Stopa, L. Zawiejski, L. Adamczyk, T. Bołd, I. Grabowska-Bołd, D. Kisielewska, J. Łukasik, M. Przybycień, L. Suszycki, A. Kotański, W. Słomiński, O. Behnke, J. K. Behr, U. Behrens, C. Blohm, K. Borras, D. Bot, R. Ciesielski, N. Coppola, S. Fang, A. Geiser, P. Göttlicher, J. Grebenyuk, I. M. Gregor, T. Haas, W. Hain, A. Hüttmann, F. Januschek, B. Kahle, I.I. Katkov, U. Klein, U. Kötz, H. Kowalski, M. Lisovyi, E. Lobodzinska, B. Löhr, R. Mankel, I.-A. Melzer-Pellmann, S. Miglioranzi, A. Montanari, T. Namsoo, D. Notz, A. Parenti, P. Roloff, I. Rubinsky, U. Schneekloth, A. Spiridonov, D. Szuba, J. Szuba, T. Theedt, J. Tomaszewska, G. Wolf, K. Wrona, A. G. Yagües-Molina, C. Youngman, W. Zeuner, V. Drugakov, W. Lohmann, S. Schlenstedt, G. Barbagli, E. Gallo, P.G. Pelfer, A. Bamberger, D. Dobur, F. Karstens, N. Vlasov, P. Bussey, A. T. Doyle, M. Forrest, D. H. Saxon, I. O. Skillicorn, I. Gialas, K. Papageorgiu, U. Holm, R. Klanner, E. Lohrmann, H. Perrey, P. Schleper, T. Schörner-Sadenius, J. Sztuk, H. Stadie, M. Turcato, C. Foudas, C. Fry, K. Long, A. Tapper, T. Matsumoto, K. Nagano, K. Tokushuku, S. Yamada, Y. Yamazaki, A.N. Barakbaev, E.G. Boos, N.S. Pokrovskiy, B.O. Zhautykov, V. Aushev, O. Bachynska, M. Borodin, І. Каденко, Oleg Kuprash, V. Libov, D. Lontkovskyi, I. Makarenko, Iu. Sorokin, A. Verbytskyi, O. Volynets, M. Zolko, D. Son, J. de Favereau, K. Piotrzkowski, F. Barreiro, C. Glasman, M. Jiménez, J. del Peso, E. Ron, J. Terrón, C. Uribe-Estrada, F. Corriveau, J. Schwartz, C. Zhou, T. Tsurugai, А. Антонов, B. A. Dolgoshein, D. Gladkov, V. Sosnovtsev, A. Stifutkin, S. Suchkov, R. K. Dementiev, P. Ermolov, L. K. Gladilin, Yu. A. Golubkov, L.A. Khein, I. A. Korzhavina, V. A. Kuzmin, B. B. Levchenko, Olga Lukina, A.S. Proskuryakov, L.M. Shcheglova, D. S. Zotkin, I. Abt, A. Caldwell, D. Kollár, B. Reisert, W. B. Schmidke, G. Grigorescu, A. Keramidas, E. Koffeman, P. Kooijman, A. Pellegrino, H. Tiecke, L. Wiggers, N. Brümmer, B. Bylsma, L. S. Durkin, A. Lee, T. Y. Ling, P. Allfrey, M. Bell, A. M. Cooper-Sarkar, R.C.E. Devenish, J. Ferrando, B. Foster, C. Gwenlan, K. Horton, K. Oliver, A. Robertson, R. Walczak, A. Bertolin, F. Dal Corso, S. Dusini, A. Longhin, L. Stanco, R. Brugnera, R. Carlin, A. Garfagnini, S. Limentani, B.Y. Oh, A. Raval, J. Whitmore, Y. Iga, G. D’Agostini, G. Marini, A. Nigro, J. E. Cole, J.C. Hart, H. Abramowicz, R. Ingbir, S. Kananov, A. Levy, A. Stern, M. Kuze, J. Maeda, R. Hori, S. Kagawa, N. Okazaki, S. Shimizu, T. Tawara, R. Hamatsu, H. Kaji, S. Kitamura, O. Ota, Y.D. Ri, M. Costa, M.I. Ferrero, V. Monaco, R. Sacchi, V. Sola, A. Solano, M. Arneodo, M. Ruspa, S. Fourletov, T. P. Stewart, S. Boutle, J. M. Butterworth, T.W. Jones, J.H. Loizides, M. Wing, B. Brzozowska, J. Ciborowski, G. Grzelak, P. Kulinski, P. Łużniak, J. Malka, R.J. Nowak, J. M. Pawlak, W. Perlański, A. F. Żarnecki, M. Adamus, P. Pluciński, Y. Eisenberg, D. Hochman, U. Karshon, E. Brownson, D. D. Reeder, A. A. Savin, W. H. Smith, H. Wolfe, S. Bhadra, C. D. Catterall, Yanou Cui, G. Hartner, S. Menary, U. Noor, J. Standage, J. Whyte
Bibliographic record
VenueThe European Physical Journal C · 2009
Typearticle
Languageen
FieldPhysics and Astronomy
TopicParticle physics theoretical and experimental studies
Canadian institutionsYork UniversityUniversity of TorontoMcGill University
FundersNational Natural Science Foundation of ChinaStrongDeutsches Elektronen-SynchrotronScience and Technology Facilities CouncilRussian Foundation for Basic ResearchNational Science Foundation
KeywordsPhysicsHERACharm (quantum number)Particle physicsZEUS (particle detector)Nuclear physicsMuonCharm quarkDeep inelastic scatteringQuarkLuminosityProtonQuantum chromodynamicsBeautyScatteringInelastic scattering
Abstract
No abstract in any covered source. Its absence is recorded, not treated as a negative.
No abstract. This is not a gap in this database; OpenAlex has none either. 23.3% of the frame is in this state, and the screen finds HALF as much metaresearch here, so the absence is a measured bias rather than a missing field.
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)0.001
metaresearch head score (Gemma)0.002
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 score0.004
Threshold uncertainty score0.013
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.003 | 0.002 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.002 | 0.001 |
| Open science | 0.001 | 0.002 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.004 | 0.001 |
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 head0.017
GPT teacher head0.248
Teacher spread0.231 · 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
Citations60
Published2009
Admission routes1
Has abstractno