← Back to cohort
Observation of the decays <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:msup> <mml:mi>B</mml:mi> <mml:mo>+</mml:mo> </mml:msup> <mml:mo stretchy="false">→</mml:mo> <mml:msub> <mml:mi mathvariant="normal">Σ</mml:mi> <mml:mi>c</mml:mi> </mml:msub> <mml:mo stretchy="false">(</mml:mo> <mml:mn>2455</mml:mn> <mml:msup> <mml:mo stretchy="false">)</mml:mo> <mml:mrow> <mml:mo>+</mml:mo> <mml:mo>+</mml:mo> </mml:mrow> </mml:msup> <mml:msubsup> <mml:mover accent="true"> <mml:mi mathvariant="normal">Ξ</mml:mi> <mml:mo stretchy="false">¯</mml:mo> </mml:mover> <mml:mi>c</mml:mi> <mml:mo>−</mml:mo> </mml:msubsup> </mml:math> and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:msup> <mml:mi>B</mml:mi> <mml:mn>0</mml:mn> </mml:msup> <mml:mo stretchy="false">→</mml:mo> <mml:msub> <mml:mi mathvariant="normal">Σ</mml:mi> <mml:mi>c</mml:mi> </mml:msub> <mml:mo stretchy="false">(</mml:mo> <mml:mn>2455</mml:mn> <mml:msup> <mml:mo stretchy="false">)</mml:mo> <mml:mn>0</mml:mn> </mml:msup> <mml:msubsup> <mml:mover accent="true"> <mml:mi mathvariant="normal">Ξ</mml:mi> <mml:mo stretchy="false">¯</mml:mo> </mml:mover> <mml:mi>c</mml:mi> <mml:mn>0</mml:mn> </mml:msubsup> </mml:math>
M. Abumusabh, I. Adachi, L. Aggarwal, H. Ahmed, Y. H. Ahn, H. Aihara, Н. Акопов, S. A. Al‐Ghamdi, M. Alhakami, A. Aloisio, N. Althubiti, K. R. Amos, N. Anh Ky, D. M. Asner, H. Atmacan, T. Aushev, V. Aushev, R. Ayad, V. Babu, H. Bae, N. K. Baghel, S. Bahinipati, P. Bambade, S. Banerjee, M. Barrett, M. Bartl, J. Baudot, A. Baur, A. Beaubien, F. Becherer, Jürgen Becker, J. V. Bennett, F. U. Bernlochner, V. Bertacchi, M. Bertemes, E. Bertholet, M. Bessner, S. Bettarini, V. Bhardwaj, B. Bhuyan, F. Bianchi, D. Biswas, A. Bobrov, D. Bodrov, A. Bondar, G. Bonvicini, J. Borah, A. Boschetti, A. Bożek, M. Bračko, P. Branchini, R. A. Briere, T. E. Browder, A. Budano, S. Bussino, Q. Campagna, M. Campajola, L. Cao, G. Casarosa, C. Cecchi, M.-C. Chang, P. Cheema, L. Chen, B. G. Cheon, K. Chilikin, J. Chin, K. Chirapatpimol, H.-E. Cho, K. Cho, S.-J. Cho, S.-K. Choi, S. Choudhury, L. Corona, J. X. Cui, E. De La Cruz–Burelo, S. A. De La Motte, G. De Nardo, G. De Pietro, R. de Sangro, M. Destefanis, S. Dey, A. Di Canto, J. Dingfelder, Z. Doležal, I. Domínguez Jiménez, T. V. Dong, X. Dong, M. Dorigo, K. Dugic, G. Dujany, P. Ecker, D. Epifanov, J. Eppelt, R. Farkas, P. Feichtinger, T. Ferber, T. Fillinger, C. Finck, G. Finocchiaro, F. Forti, A. Frey, B. G. Fulsom, A. Gabrielli, A. Gale, E. Ganiev, M. Garcia-Hernandez, R. Garg, G. Gaudino, V. Gaur, V. Gautam, A. Gellrich, D. Ghosh, H. Ghumaryan, G. Giakoustidis, R. Giordano, A. Giri, P. Gironella Gironell, B. Gobbo, R. Godang, P. Goldenzweig, W. Gradl, E. Graziani, D. Greenwald, K. Gudkova, I. Haide, Y. Han, C. Harris, H. Hayashii, S. Hazra, C. Hearty, M. T. Hedges, G. Heine, I. Heredia-De La Cruz, T. Higuchi, M. Hoek, M. Hohmann, R. HOPPE, P. Horak, X. T. Hou, C.-L. Hsu, T. Humair, T. Iijima, K. Inami, N. Ipsita, A. Ishikawa, R. Itoh, M. Iwasaki, P. Jackson, W. W. Jacobs, E.-J. Jang, Q. P. Ji, Y. Jin, A. Johnson, J. Kandra, K. H. Kang, F. Keil, C. Kiesling, C. H. Kim, D. Y. Kim, J.-Y. Kim, K.-H. Kim, Y.-K. Kim, H. Kindo, K. Kinoshita, P. Kodyš, T. Koga, S. Kohani, K. Kojima, A. Korobov, S. Korpar, E. Kovalenko, R. Kowalewski, P. Križan, P. Krokovny, T. Kuhr, Y. Kulii, R. Kumar, K. Kumara, T. Kunigo, A. Kuzmin, Y.-J. Kwon, K. Lalwani, T. Lam, J. S. Lange, T. S. Lau, M. Laurenza, R. Leboucher, F. Le Diberder, M. J. Lee, P. Leo, P. Lewis, C. Li, H. J. Li, L. K. Li, Q. M. Li, W. Z. Li, Y. Li, Y. B. Li, Y. P. Liao, J. Libby, J. Lin, V. Lisovskyi, M. H. Liu, Q. Y. Liu, Zhiqing Liu, D. Liventsev, S. Longo, A. Lozar, T. Lueck, C. Lyu, Yue Ma, M. Maggiora, S. P. Maharana, R. Maiti, G. Mancinelli, R. Manfredi, E. Manoni, M. Mantovano, D. Marcantonio, S. Marcello, C. Mariñas, C. Martellini, A. Martens, T. Martinov, L. Massaccesi, M. Masuda, T. Matsuda, D. Matvienko, S. K. Maurya, M. Maushart, J. A. McKenna, Z. Gruberová, R. Mehta, F. Meier, D. Meleshko, M. Merola, C. Miller, M. Mirra, K. Miyabayashi, H. Miyake, S. Mondal, S. Moneta, A. L. Moreira De Carvalho, H.-G. Moser, R. Mussa, I. Nakamura, M. Nakao, H. Nakazawa, Y. Nakazawa, M. Naruki, Z. Natkaniec, A. Natochii, M. Nayak, M. Neu, S. Nishida, S. Ogawa, R. Okubo, H. Ono, Y. Onuki, G. Pakhlova, S. Pardi, J. Park, S.-H. Park, B. Paschen, S. Patra, S. Paul, T. K. Pedlar, R. Pestotnik, L. E. Piilonen, P. L. M. Podesta-Lerma, T. Podobnik, C. Praz, S. Prell, E. Prencipe, M. T. Prim, S. Privalov, H. Purwar, P. Rados, G. Raeuber, S. Raiz, V P Jagathy Raj, K. Ravindran, J. U. Rehman, M. Reif, S. Reiter, D. Ricalde Herrmann, I. Ripp-Baudot, G. Rizzo, S. H. Robertson, J. M. Roney, A. Rostomyan, N. Rout, D. A. Sanders, S. Sandilya, L. Šantelj, C. Santos, V. Savinov, B. Scavino, G. Schnell, M. Schnepf, K. Schoenning, C. Schwanda, Y. Seino, A. Selce, K. Senyo, J. Serrano, C. Sfienti, W. Shan, G. Sharma, C. P. Shen, X. Shi, T. Shillington, T. Shimasaki, J.-G. Shiu, D. Shtol, B. Shwartz, A. Sibidanov, F. Simon, J. B. Singh, J. Skorupa, R. Sobie, M. Sobotzik, A. Soffer, A. Sokolov, E. Solovieva, S. Spataro, B. Spruck, M. Starič, P. Stavroulakis, L. Stoetzer, R. Stroili, M. Sumihama, N. Suwonjandee, H. Svidras, M. Takizawa, S. Tanaka, S. S. Tang, K. Tanida, F. Tenchini, F. Testa, A. Thaller, O. Tittel, R. Tiwary, E. Torassa, K. Trabelsi, F. F. Trantou, I. Tsaklidis, M. Uchida, I. Ueda, K. Unger, Y. Unno, K. Uno, S. Uno, P. Urquijo, Y. Ushiroda, S. Vahsen, R. van Tonder, K. E. Varvell, M. Veronesi, V. S. Vismaya, L. Vitale, R. Volpe, M. Wakai, S. Wallner, M.-Z. Wang, A. Warburton, C. Wessel, E. Won, B. Yabsley, S. Yamada, W. B. Yan, S. B. Yang, J. Yelton, J. H. Yin, K. Yoshihara, C. Z. Yuan, J. Yuan, Y. Yusa, L. Zani, F. Zeng, Boyang Zhang, J. S. Zhou, Q. Zhou, L. Zhu, R. Žlebčík
Bibliographic record
VenuePhysical review. D/Physical review. D. · 2025
Typearticle
Languagelv
FieldPhysics and Astronomy
TopicParticle physics theoretical and experimental studies
Canadian institutionsnot available
FundersHORIZON EUROPE European Research CouncilCentro de Investigación y de Estudios Avanzados del Instituto Politécnico NacionalAkademi Sains MalaysiaJapan Society for the Promotion of ScienceDeutsches Elektronen-SynchrotronAustralian Research CouncilSeventh Framework ProgrammeKorea Research Environment Open NetworkPacific Northwest National LaboratoryIstituto Nazionale di Fisica NucleareNational Institute of InformaticsMinistry of Science and Higher Education of the Russian FederationHORIZON EUROPE Marie Sklodowska-Curie ActionsNational Research University Higher School of EconomicsNatural Science Foundation of Shandong ProvinceHigh Energy Accelerator Research OrganizationNextGenerationEUForskningsrådet om Hälsa, Arbetsliv och VälfärdMinistry of Science and Technology, IsraelMinisterio de Ciencia e InnovaciónTürkiye Bilimsel ve Teknolojik Araştırma KurumuUniversiti MalayaKnut och Alice Wallenbergs StiftelseNational Key Research and Development Program of ChinaIsrael Science FoundationKorea Institute of Science and TechnologyMinistry of Higher Education, MalaysiaNational Science FoundationUniversity of VictoriaChina Postdoctoral Science FoundationMinistry of Education and Science of UkraineMinisterstwo Edukacji i NaukiUniverzita Karlova v PrazeNarodowe Centrum NaukiNational Natural Science Foundation of ChinaNational Research Foundation of KoreaAgence Nationale de la RechercheKing Saud UniversityAustrian Science FundGrantová Agentura České RepublikyNatural Sciences and Engineering Research Council of CanadaMinistry of Education, Culture, Sports, Science and TechnologyBundesministerium für Bildung und ForschungNational Science and Technology CouncilMinisterstvo Školství, Mládeže a TělovýchovyNational Research FoundationJavna Agencija za Raziskovalno Dejavnost RSSchweizerischer Nationalfonds zur Förderung der Wissenschaftlichen ForschungBundesministerium für Bildung, Wissenschaft und ForschungDeutsche ForschungsgemeinschaftAlexander von Humboldt-StiftungKorea Institute of Science and Technology InformationDepartment of Atomic Energy, Government of IndiaEnvironmental Molecular Sciences LaboratoryBrookhaven National LaboratoryEuropean Research CouncilCentre National de la Recherche ScientifiqueMax-Planck-GesellschaftNational Research Foundation of UkraineMinistry of EducationInstitut National de Physique Nucléaire et de Physique des ParticulesUniversity of Petroleum and Energy StudiesDepartment of Science and Technology, Ministry of Science and Technology, IndiaState Committee of ScienceGeneralitat ValencianaInstituto Nazionale di Fisica NucleareUnited States-Israel Binational Science FoundationHelmholtz-GemeinschaftThailand Center of Excellence in PhysicsAgencia Estatal de InvestigaciónSecretaría de Educación PúblicaVietnam Academy of Science and TechnologyCompute CanadaUniversity of TabukMinistry of Education and ScienceCanarieGrantová Agentura, Univerzita KarlovaIstituto Nazionale di Fisica Nucleare Sezione di PadovaIkerbasque, Basque Foundation for ScienceEuropean CommissionU.S. Department of Energy
KeywordsBranching fractionStatistical analysisBaryonBranching (polymer chemistry)Particle decay
Abstract
We report the first observation of the two-body baryonic decays B + → Σ c ( 2455 ) + + Ξ ¯ c − and B 0 → Σ c ( 2455 ) 0 Ξ ¯ c 0 with significances of 7.3 σ and 6.2 σ , respectively, including statistical and systematic uncertainties. The branching fractions are measured to be B ( B + → Σ c ( 2455 ) + + Ξ ¯ c − ) = ( 5.74 ± 1.11 ± 0.4 2 − 1.53 + 2.47 ) × 10 − 4 and B ( B 0 → Σ c ( 2455 ) 0 Ξ ¯ c 0 ) = ( 4.83 ± 1.12 ± 0.3 7 − 0.60 + 0.72 ) × 10 − 4 . The first and second uncertainties are statistical and systematic, respectively, while the third ones arise from the absolute branching fractions of Ξ ¯ c − or Ξ ¯ c 0 decays. The data samples used for this analysis have integrated luminosities of 711 fb − 1 and 365 fb − 1
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)0.001
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: Observational · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.044
Threshold uncertainty score0.147
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 | 0.001 | 0.002 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.002 | 0.002 |
| Open science | 0.001 | 0.002 |
| Research integrity | 0.002 | 0.004 |
| Insufficient payload (model declined to judge) | 0.044 | 0.010 |
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 head0.277
Teacher spread0.261 · 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 designObservational
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
Citations3
Published2025
Admission routes1
Has abstractyes