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Observation of the decay <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.gif" overflow="scroll"><mml:msubsup><mml:mrow><mml:mi>Λ</mml:mi></mml:mrow><mml:mrow><mml:mi>b</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msubsup><mml:mo stretchy="false">→</mml:mo><mml:msubsup><mml:mrow><mml:mi>Λ</mml:mi></mml:mrow><mml:mrow><mml:mi>c</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msubsup><mml:mi>p</mml:mi><mml:mover accent="true"><mml:mrow><mml:mi>p</mml:mi></mml:mrow><mml:mo>‾</mml:mo></mml:mover><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:math>
R. Aaij, B. Adeva, Z. Ajaltouni, S. Akar, P. Albicocco, J. Albrecht, F. Alessio, M. Alexander, A. Alfonso Albero, S. Ali, G. Alkhazov, P. Álvarez Cartelle, A. A. Alves, S. Amato, S. Amerio, Y. Amhis, L. An, L. Anderlini, G. Andreassi, M. Andreotti, J. E. Andrews, R.B. Appleby, F. Archilli, P. d'Argent, J. Arnau Romeu, A. Artamonov, M. Artuso, E. Aslanides, M. Atzeni, G. Auriemma, S. Bachmann, J.J. Back, S. Baker, V. Balagura, W. Baldini, A. Baranov, R. J. Barlow, S. Barsuk, W. Barter, F. Baryshnikov, V. Batozskaya, V. Battista, A. Bay, J. Beddow, F. Bedeschi, I. Bediaga, A. Beiter, L. J. Bel, N. Beliy, V. Bellée, N. Belloli, K. Belous, I. Belyaev, E. Ben-Haim, G. Bencivenni, S. Benson, S. Beranek, A. Berezhnoy, R. Bernet, D. Berninghoff, E. Bertholet, A. Bertolin, C. Betancourt, F. Betti, M. O. Bettler, M. van Beuzekom, Ia. Bezshyiko, S. Bifani, P. Billoir, A. Birnkraut, Andrea Bizzeti, M. Bjørn, T. Blake, F. Blanc, S. Blusk, V. Bocci, O. Boente García, T. Boettcher, A. Bondar, N. Bondar, S. Borghi, M. Borisyak, M. Borsato, F. Bossu, M. Boubdir, T. J. V. Bowcock, E. Bowen, C. Bozzi, S. Braun, Michael Brodski, J. Brodzicka, D. Brundu, E. Buchanan, C. Burr, A. Bursche, J. Buytaert, W. Byczynski, S. Cadeddu, H. Cai, R. Calabrese, R. Calladine, M. Calvi, M. Calvo Gomez, A. Camboni, P. Campana, D. H. Cámpora Pérez, L. Capriotti, A. Carbone, G. Carboni, R. Cardinale, A. Cardini, P. Carniti, L. Carson, K. Carvalho Akiba, G. Casse, L. Cassina, M. Cattaneo, G. Cavallero, R. Cenci, D. Chamont, M. G. Chapman, M. Charles, Ph. Charpentier, G. Chatzikonstantinidis, M. Chefdeville, S. Chen, S.-G. Chitic, V. Chobanova, A. Chubykin, A. Chubykin, X. Cid Vidal, G. Ciezarek, P.E.L. Clarke, M. Clemencic, H. V. Cliff, J. Closier, V. Coco, J. Cogan, E. Cogneras, V. Cogoni, L. Cojocariu, P. Collins, T. Colombo, A. Comerma-Montells, A. Contu, G. Coombs, S. Coquereau, G. Corti, M. Corvo, C. M. Costa Sobral, B. Couturier, G. Cowan, D. C. Craik, A. Crocombe, M. Cruz Torres, R. Currie, C. D'Ambrosio, F. Da Cunha Marinho, C.L. Da Silva, E. Dall’Occo, J. Dalseno, A. Danilina, A. Davis, O. De Aguiar Francisco, K. De Bruyn, S. De Capua, M. De Cian, J. M. De Miranda, L. De Paula, P. De Simone, L. Del Buono, B. Delaney, H.-P. Dembinski, M. Demmer, A. Dendek, D. Derkach, O. Deschamps, F. Dettori, B. Dey, A. Di Canto, P. Di Nezza, S. Didenko, H. Dijkstra, F. Dordei, M. Dorigo, A. Dosil Suárez, L. Douglas, A. Dovbnya, K. Dreimanis, L. Dufour, G. Dujany, P. Durante, J. M. Durham, D. Dutta, R. Dzhelyadin, M. Dziewiecki, A. Dziurda, A. Dzyuba, S. Easo, U. Egede, V. Egorychev, S. Eidelman, S. Eisenhardt, U. Eitschberger, R. Ekelhof, L. Eklund, S. Ely, A. Ene, S. Escher, S. Esen, H. M. Evans, Timothy Evans, A. Falabella, N. Farley, S. Farry, D. Fazzini, L. Federici, G. Fernández, P. Fernandez Declara, A. Fernandez Prieto, F. Ferrari, L. Ferreira Lopes, F. Ferreira Rodrigues, S. Filippov, R. A. Fini, M. Fiorini, M. Firlej, C. Fitzpatrick, T. Fiutowski, F. Fleuret, M. Fontana, F. Fontanelli, R. Forty, V. Franco Lima, M. Frank, C. Frei, J. Fu, W. Funk, C. Färber, E. Gabriel, A. Gallas Torreira, D. Galli, S. Gallorini, S. Gambetta, P. Gandini, Y. Gao, L. M. Garcia Martin, B. Garcia Plana, J. García Pardiñas, J. Garra Tico, L. Garrido, D. Gascón, C. Gaspar, L. Gavardi, G. Gazzoni, D. Gerick, E. Gersabeck, M. Gersabeck, T. Gershon, P. Ghez, S. Gianì, V. Gibson, O. G. Girard, L. Giubega, K. Gizdov, V. V. Gligorov, D. Golubkov, A. Golutvin, A. Gomes, I. Gorelov, C. Gotti, E. Govorkova, J. P. Grabowski, R. Graciani Diaz, L. A. Granado Cardoso, E. Graugés, E. Graverini, G. Graziani, A. Grecu, R. Greim, P. Griffith, L. Grillo, L. Gruber, B. R. Gruberg Cazon, O. Grünberg, E. Gushchin, Yu. Guz, T. Gys, C. Göbel, T. Hadavizadeh, C. Hadjivasiliou, G. Haefeli, C. Haen, S.C. Haines, B. Hamilton, X. Han, T.H. Hancock, S. Hansmann-Menzemer, N. Harnew, S.T. Harnew, C. Hasse, M. Hatch, J. He, M. Hecker, K. Heinicke, A. Heister, K. Hennessy, L. Henry, E. van Herwijnen, M. Heß, A. Hicheur, David R.C. Hill, P.H. Hopchev, W. Hu, W. Huang, Z. C. Huard, W. Hulsbergen, T. Humair, M. Hushchyn, D. Hutchcroft, P. Ibis, M. Idzik, P. Ilten, К. Ившин, R. Jacobsson, J. Jalocha, E. Jans, A. Jawahery, F. Jiang, M. John, D. Johnson, C.R. Jones, C. Joram, N. Jurik, S. Kandybei, M. Karacson, J.M. Kariuki, S. Karodia, N. Kazeev, M. Kecke, F. Keizer, M. Kelsey, M. Kenzie, T. Ketel, E. Khairullin, B. Khanji, C. Khurewathanakul, K.E. Kim, T. Kirn, S. Klaver, K. Klimaszewski, T. Klimkovich, S. Koliiev, M. Kolpin, R. Kopecna, P. Koppenburg, S. Kotriakhova, M. Kozeiha, L. Kravchuk, M. Kreps, F. Kress, P. Krokovny, W. Krupa, W. Krzemień, W. Kucewicz, M. Kucharczyk, V. Kudryavtsev, A. K. Kuonen, T. Kvaratskheliya, D. Lacarrere, G. Lafferty, A. Lai, G. Lanfranchi, C. Langenbruch, T. Latham, C. Lazzeroni, R. Le Gac, A. Leflat, J. Lefrançois, R. Lefèvre, F. Lemaitre, O. Leroy, T. Lesiak, B. Leverington, P.-R. Li, T. Li, Z. Li, X. Liang, T. Likhomanenko, R. Lindner, F. Lionetto, V. Lisovskyi, X. Liu, D. Loh, A. Loi, I. Longstaff, J.H. Lopes, D. Lucchesi, M. Lucio Martinez, A. Lupato, E. Luppi, O. Lupton, A. Lusiani, X. R. Lyu, F. Machefert, F. Maciuc, V. Macko, P. Mackowiak, S. Maddrell-Mander, O. Maev, K. Maguire, D. Maisuzenko, M. W. Majewski, S. Malde, B. Małecki, A. Malinin, T. Maltsev, G. Manca, G. Mancinelli, D. Marangotto, J. Maratas, J. F. Marchand, U. Marconi, C. Marín Benito, M. Marinangeli, P. Marino, J. Marks, M. Martin, M. Martinelli, D. Martínez Santos, F. Martínez-Vidal, A. Massafferri, R. Matev, Z. Máthé, C. Matteuzzi, A. Mauri, E. Maurice, B. Maurin, A. Mazurov, M. McCann, A. McNab, R. McNulty, J. V. Mead, B. Meadows, C. Meaux, F. Meier, N. Meinert, D. Melnychuk, Marcel Merk, A. Merli, E. Michielin, D.A. Milanes, E. Millard, M.-N. Minard, L. Minzoni, D. S. Mitzel, A. Mogini, J. Molina Rodriguez, T. Mombächer, I. A. Monroy, S. Monteil, M. Morandin, G. Morello, M. J. Morello, O. Morgunova, J. Moroń, A. B. Morris, R. Mountain, F. Muheim, M. Mulder, D. Müller, J. Müller, K. Müller, V. Müller, P. Naik, T. Nakada, R. Nandakumar, A. Nandi, I. Nasteva, M. Needham, N. Neri, S. Neubert, N. Neufeld, M. Neuner, T. D. Nguyen, C. Nguyen-Mau, S. Nieswand, R. Niet, N. Nikitin, A. Nogay, D.P. O'Hanlon, A. Obłąkowska-Mucha, V. Obraztsov, S. Ogilvy, R. Oldeman, C. J. G. Onderwater, A. Ossowska, J. M. Otalora Goicochea, P. Owen, P. R. Pais, A. Palano, M. Palutan, G. Panshin, M. Pappagallo, L.L. Pappalardo, W. Parker, C. Parkes, G. Passaleva, A. Pastore, M. Patel, C. Patrignani, A. Pearce, A. Pellegrino, G. Penso, M. Pepe Altarelli, S. Perazzini, D. Pereima, P. Perret, L. Pescatore, K. Petridis, A. Petrolini, A. Petrov, M. Petruzzo, B. Pietrzyk, G. Pietrzyk, M. Pikies, D. Pinci, F. Pisani, A. Pistone, A. Piucci, V. Placinta, S. Playfer, M. Pló Casasús, F. Polci, M. Poli Lener, A. Poluektov, N. Polukhina, I. Polyakov, E. Polycarpo, G. J. Pomery, S. Ponce, A. Popov, D. Popov, S. Poslavskii, C. Potterat, E. Price, J. Prisciandaro, C. Prouvé, Kannam Sai Lakshmi Prasanth, A. Puig Navarro, H. Pullen, G. Punzi, W. Qian, J. Qin, R. Quagliani, B. Quintana, B. Rachwał, J. H. Rademacker, M. Rama, M. Ramos Pernas, M. S. Rangel, F. Ratnikov, G. Raven, M. Ravonel Salzgeber, M. Reboud, F. Redi, S. Reichert, A.C. dos Reis, C. Remon Alepuz, V. Renaudin, S. Ricciardi, S. Richards, K. Rinnert, P. Robbe, A. Robert, A.B. Rodrigues, E. Rodrigues, J. A. Rodriguez Lopez, A. Rogozhnikov, S. Roiser, A. Rollings, V. Romanovskiy, A. Romero Vidal, M. Rotondo, M. S. Rudolph, T. Ruf, J. J. Saborido Silva, N. Sagidova, B. Saitta, V. Salustino Guimaraes, C. Sanchez Mayordomo, B. Sanmartin Sedes, R. Santacesaria, C. Santamarina Ríos, M. Santimaria, E. Santovetti, G. Sarpis, A. Sarti, C. Satriano, A. Satta, D.M. Saunders, D. Savrina, S. Schael, M. Schellenberg, M. Schiller, H. Schindler, M. Schmelling, T. Schmelzer, B. Schmidt, O. Schneider, A. Schopper, H. F. Schreiner, M. Schubiger, M.H. Schune, R. Schwemmer, B. Sciascia, A. Sciubba, A. Semennikov, E. S. Sepulveda, A. Sergi, N. Serra, J. Serrano, L. Sestini, P. Seyfert, M. Shapkin, Y. Shcheglov, T. Shears, V. Shevchenko, B.G. Siddi, R. Silva Coutinho, L. Silva de Oliveira, G. Simi, S. Simone, T. Skwarnicki, I.T. Smith, M. Smith, l. Soares Lavra, M.D. Sokoloff, B. Souza De Paula, B. Spaan, F. Stagni, M. Stahl, S. Stahl, P. Stefko, S. Stefkova, O. Steinkamp, S. Stemmle, O. Stenyakin, M. Stepanova, H. Stevens, S. Stone, B. Storaci, S. Stracka, M. E. Stramaglia, M. Straticiuc, U. Straumann, S. Strokov, J. Sun, L. Sun, K. Świentek, V. Syropoulos, T. Szumlak, M. Szymanski, Stephane T'Jampens, Z. Tang, A. Tayduganov, T. Tekampe, G. Tellarini, F. Teubert, E. Thomas, J. van Tilburg, M.J. Tilley, V. Tisserand, M. Tobin, S. Tolk, L. Tomassetti, D. Tonelli, R. Tourinho Jadallah Aoude, Edwige Tournefier, M. Traill, M.T. Tran, M. Tresch, A. Trisovic, A. Tsaregorodtsev, A. Tully, N. Tuning, A. Ukleja, A. Usachov, A. Ustyuzhanin, U. Uwer, C. Vacca, A. Vagner, V. Vagnoni, A. Valassi, S. Valat, G. Valenti, R. Vazquez Gomez, P. Vázquez Regueiro, S. Vecchi, M. van Veghel, J.J. Velthuis, M. Veltri, G. Veneziano, A. Venkateswaran, Tobias Verlage, M. Vernet, M. Vesterinen, J.V. Viana Barbosa, D. Vieira, M. Vieites Diaz, H. Viemann, X. Vilasis-Cardona, A. Vitkovskiy, M. Vitti, V. Volkov, A. Vollhardt, B. Voneki, A. Vorobyev, V. Vorobyev, C. Voß, J. A. de Vries, C. Vázquez Sierra, R. Waldi, J. Walsh, J. Wang, M. Wang, Y. Wang, Z. Wang, D. R. Ward, H. M. Wark, N. K. Watson, D. Websdale, A. Weiden, C. Weisser, M. Whitehead, J. Wicht, M. Wilkinson, M. Williams, Tom A. Williams, F. F. Wilson, J. Wimberley, M. Winn, J. Wishahi, W. Wiślicki, M. Witek, G. Wormser, S. A. Wotton, K. Wyllie, D. Xiao, Y. Xie, A. Xu, M. Xu, Q. Xu, Z. Xu, Z. Yang, Y. Yao, H. Yin, J. Yu, X. Yuan, O. Yushchenko, K. A. Zarebski, M. Zavertyaev, L. Zhang, Y. Zhang, A. Zhelezov, Y. Zheng, X. Zhu, V. Zhukov, J. B. Zonneveld, S. Zucchelli
Bibliographic record
VenuePhysics Letters B · 2018
Typearticle
Languagelv
FieldPhysics and Astronomy
TopicParticle physics theoretical and experimental studies
Canadian institutionsnot available
FundersH2020 European Research CouncilInstitut National de Physique Nucléaire et de Physique des ParticulesScience and Technology Facilities CouncilRecruitment Program of Global ExpertsRégion Auvergne-Rhône-AlpesFinanciadora de Estudos e ProjetosCentre National de la Recherche ScientifiqueNational Academy of Sciences of UkraineFundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de JaneiroNarodowe Centrum NaukiRoyal SocietyMax-Planck-GesellschaftDeutsches Elektronen-SynchrotronGeneralitat ValencianaRussian Foundation for Basic ResearchConselho Nacional de Desenvolvimento Científico e TecnológicoNational Natural Science Foundation of ChinaH2020 Marie Skłodowska-Curie ActionsSchweizerischer Nationalfonds zur Förderung der Wissenschaftlichen ForschungNederlandse Organisatie voor Wetenschappelijk OnderzoekAgence Nationale de la RechercheInstituto Nazionale di Fisica NucleareEuropean CommissionEnglish-Speaking UnionNational Science FoundationRussian Science FoundationLeverhulme TrustLabexAlexander von Humboldt-StiftungOffice of Strategic CoordinationInstitutul National de Cercetare-Dezvoltare pentru Fizica si Inginerie Nucleara 'Horia Hulubei'Deutsche ForschungsgemeinschaftMinisterstwo Edukacji i NaukiCERNCoordenação de Aperfeiçoamento de Pessoal de Nível SuperiorUniversity of South AlabamaSchool of Energy Resources, University of WyomingBundesministerium für Bildung und ForschungPoultry Industry Council
KeywordsBranching fractionLuminosityPhysicsBranching (polymer chemistry)Analytical Chemistry (journal)Nuclear physicsChemistryAstrophysics
Abstract
The decay Λ b 0 → Λ c + p p ‾ π − is observed using pp collision data collected with the LHCb detector at centre-of-mass energies of s = 7 and 8 Tev, corresponding to an integrated luminosity of 3 fb − 1 . The ratio of branching fractions between Λ b 0 → Λ c + p p ‾ π − and Λ b 0 → Λ c + π − decays is measured to be B ( Λ b 0 → Λ c + p p ‾ π − ) B ( Λ b 0 → Λ c + π − ) = 0.0540 ± 0.0023 ± 0.0032 . Two resonant structures are observed in the Λ c + π − mass spectrum of the Λ b 0 → Λ c + p p ‾ π − decays, corresponding to the Σ c ( 2455 ) 0 and Σ c ⁎ ( 2520 ) 0 states. The ratios of branching fractions with respect to the decay Λ b 0 → Λ c + p p ‾ π − are B ( Λ b 0 → Σ c 0 p p ‾ ) × B ( Σ c 0 → Λ c + π − ) B ( Λ b 0 → Λ c + p p ‾ π − ) = 0.089 ± 0.015 ± 0.006 , B ( Λ b 0 → Σ c ⁎ 0 p p ‾ ) × B ( Σ c ⁎ 0 → Λ c + π − ) B ( Λ b 0 → Λ c + p p ‾ π − ) = 0.119 ± 0.020 ± 0.014 . In all of the above results, the first uncertainty is statistical and the second is systematic. The phase space is also examined for the presence of dibaryon resonances. No evidence for such resonances is found.
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)0.002
metaresearch head score (Gemma)0.011
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: none
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.083
Threshold uncertainty score0.278
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.002 | 0.011 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.002 | 0.002 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.003 | 0.005 |
| Open science | 0.002 | 0.003 |
| Research integrity | 0.002 | 0.006 |
| Insufficient payload (model declined to judge) | 0.083 | 0.035 |
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 head0.019
GPT teacher head0.242
Teacher spread0.223 · 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
Citations16
Published2018
Admission routes1
Has abstractyes