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Measurement of the electron energy spectrum and its moments in inclusive<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mrow><mml:mover><mml:mrow><mml:mi>B</mml:mi></mml:mrow><mml:mrow><mml:mo>→</mml:mo></mml:mrow></mml:mover></mml:mrow></mml:mrow><mml:mi>Xe</mml:mi><mml:mi>ν</mml:mi></mml:math>decays
B. Aubert, R. Barate, D. Boutigny, F. Couderc, J.-M. Gaillard, A. Hicheur, Y. Karyotakis, J. P. Lees, V. Tisserand, A. Zghiche, A. Palano, A. Pompili, Jin‐Chung Chen, N. D. Qi, G. Rong, P Wang, Y. S. Zhu, G. Eigen, I. Ofte, B. Stugu, G. S. Abrams, A. W. Borgland, A. B. Breon, D. N. Brown, J. Button‐Shafer, R. N. Cahn, E. Charles, C. T. Day, M. S. Gill, A. V. Gritsan, Y. Groysman, R. G. Jacobsen, R. W. Kadel, J. A. Kadyk, L. T. Kerth, Yu. G. Kolomensky, G. Kukartsev, C. LeClerc, M. E. Levi, G. Lynch, L. M. Mir, P. J. Oddone, T. J. Orimoto, M. Pripstein, N. A. Roe, M. T. Ronan, V. Shelkov, Alexandre V Telnov, W.A. Wenzel, K. E. Ford, T. J. Harrison, C. M. Hawkes, S. E. Morgan, A. T. Watson, N. K. Watson, M. Fritsch, K. Goetzen, T. Held, H. Koch, B. Lewandowski, M. Pelizaeus, M. Steinke, J. T. Boyd, N. Chevalier, W. N. Cottingham, M. Kelly, T. Latham, F. F. Wilson, K. Abe, T. Çuhadar-Dönszelmann, C. Hearty, T. S. Mattison, J. A. McKenna, D. Thiessen, P. Kyberd, L. Teodorescu, V. E. Blinov, A. D. Bukin, В. П. Дружинин, V. B. Golubev, V. Ivanchenko, E. A. Kravchenko, A. P. Onuchin, S. I. Serednyakov, Yu. I. Skovpen, E. P. Solodov, A. N. Yushkov, David Best, M. Bruinsma, M. Chao, I. Eschrich, D. Kirkby, A. J. Lankford, M. Mandelkern, R. K. Mommsen, W. Roethel, D. P. Stoker, C. Buchanan, B. L. Hartfiel, J. W. Gary, B. C. Shen, K. Wang, D. Del Re, H. K. Hadavand, E. J. Hill, D. B. MacFarlane, H. P. Paar, S. Rahatlou, V. Sharma, J. Berryhill, C. Campagnari, B. Dahmes, S. L. Levy, O. Long, A. Lu, M. A. Mazur, J. D. Richman, W. Verkerke, T. W. Beck, A. M. Eisner, C.A. Heusch, W. S. Lockman, T. Schalk, R. E. Schmitz, B. A. Schumm, A. Seiden, P. Spradlin, D. C. Williams, M. G. Wilson, J. Albert, E. Chen, G. P. Dubois-Felsmann, A. Dvoretskii, D. G. Hitlin, I. Narsky, T. Piatenko, F. C. Porter, A. Ryd, A. Samuel, S. Yang, S. Jayatilleke, G. Mancinelli, B. T. Meadows, M. D. Sokoloff, K. Abe, F. Blanc, P. C. Bloom, S. Chen, P. J. Clark, W. T. Ford, U. Nauenberg, A. Olivas, P. Rankin, Josh Smith, W. C. van Hoek, L. Zhang, J. L. Harton, J. F. Hu, A. Soffer, W. H. Toki, R. J. Wilson, D. D. Altenburg, T. Brandt, J. Brose, T. Colberg, M. Dickopp, E. Feltresi, H. M. Lacker, E. Maly, R. Müller-Pfefferkorn, R. Nogowski, S. Otto, J. Schubert, K. R. Schubert, R. Schwierz, B. Spaan, D. Bernard, G. R. Bonneaud, F. Brochard, P. Grenier, C. Thiebaux, G. Vasileiadis, M. Verderi, D. J. Bard, A. Khan, D. Lavin, S. Playfer, M. Andreotti, V. Azzolini, D. Bettoni, C. Bozzi, R. Calabrese, G. Cibinetto, E. Luppi, M. Negrini, A. Sarti, E. Treadwell, R. Baldini-Ferroli, A. Calcaterra, R. de Sangro, G. Finocchiaro, P. Patteri, M. Piccolo, A. Zallo, A. Buzzo, R. Capra, R. Contri, G. Crosetti, M. Lo Vetere, M. Macrı́, M. R. Monge, S. Passaggio, C. Patrignani, E. Robutti, A. Santroni, S. Tosi, S. Bailey, G. Brandenburg, M. Morii, E. Won, R. S. Dubitzky, U. Langenegger, W. Bhimji, D. A. Bowerman, P. D. Dauncey, U. Egede, J. R. Gaillard, G. W. Morton, J. Nash, G. P. Taylor, G. J. Grenier, Seung Jin Lee, U. Mallik, J. Cochran, H. B. Crawley, J. Lamsa, W. T. Meyer, S. Prell, E. I. Rosenberg, J. I. Yi, M. Davier, G. Grosdidier, A. Höcker, S. Laplace, F. Le Diberder, V. Lepeltier, A. M. Lutz, T. C. Petersen, S. Plaszczynski, M. H. Schune, L. Tantot, G. Wormser, C. H. Cheng, Dj Lange, M. C. Simani, D. M. Wright, A. J. Bevan, J. P. Coleman, J. R. Fry, E. Gabathuler, R. Gamet, M. Kay, R. J. Parry, D. J. Payne, R. J. Sloane, C. Touramanis, J. J. Back, P. F. Harrison, G. B. Mohanty, C. L. Brown, G. Cowan, R. L. Flack, H. U. Flaecher, Simon George, M. G. Green, A. Kurup, C. E. Marker, T. R. McMahon, S. Ricciardi, F. Salvatore, G. Vaitsas, M. A. Winter, C. L. Davis, J. Allison, N. Barlow, R. J. Barlow, P. A. Hart, M. C. Hodgkinson, G. Lafferty, A. J. Lyon, J. C. Williams, A. Farbin, Wd Hulsbergen, A. Jawahery, D. Kovalskyi, C.K. Lae, V. Lillard, D. A. Roberts, G. Blaylock, C. Dallapiccola, K. T. Flood, S. S. Hertzbach, R. Kofler, V. B. Koptchev, T. B. Moore, S. Saremi, H. Staengle, S. Willocq, R. Cowan, G. Sciolla, F. Ë. Taylor, R. K. Yamamoto, D. J. J. Mangeol, PM Patel, S. H. Robertson, A. Lazzaro, F. Palombo, J. M. Bauer, L. Cremaldi, V. Eschenburg, R. Godang, R. Kroeger, J. Reidy, D. A. Sanders, D. J. Summers, H. W. Zhao, S. Brunet, D. Côté, P. Taras, H. Nicholson, C. Cartaro, N. Cavallo, F. Fabozzi, C. Gatto, L. Lista, D. Monorchio, P. Paolucci, D. Piccolo, C. Sciacca, M. Baak, G. Raven, L. Wilden, C. P. Jessop, J. M. LoSecco, T. A. Gabriel, T. Allmendinger, B. Brau, K. K. Gan, K. Honscheid, D. Hufnagel, H. Kagan, R. Kass, T. Pulliam, R. Ter-Antonyan, Q. K. Wong, J. E. Brau, R. Frey, O. Igonkina, C. T. Potter, NB Sinev, D. Strom, E. Torrence, F. Colecchia, A. Dorigo, F. Galeazzi, M. Margoni, M. Morandin, M. Posocco, M. Rotondo, F. Simonetto, R. Stroili, G. Tiozzo, C. Voci, M. Benayoun, H. Briand, J. Chauveau, P. David, Ch. de la Vaissière, L. Del Buono, O. Hamon, M. John, Ph. Leruste, J. Ocariz, M. Pivk, L. Roos, S. T’Jampens, G. Thérin, P.F. Manfredi, V. Re, P. K. Behera, L. Gladney, Qinghua Guo, J. Panetta, F. Anulli, M. Biasini, I. M. Peruzzi, M. Pioppi, C. Angelini, G. Batignani, S. Bettarini, M. Bondioli, F. Bucci, G. Calderini, M. Carpinelli, V. Del Gamba, F. Forti, M. A. Giorgi, A. Lusiani, G. Marchiori, F. Martínez-Vidal, M. Morganti, N. Néri, E. Paoloni, M. Rama, G. Rizzo, F. Sandrelli, J. Walsh, M. Haire, D. Judd, K. Paick, D. E. Wagoner, N. Danielson, P. Elmer, C. Lu, V. Miftakov, J. Olsen, A. J. S. Smith, E. W. Varnes, F. Bellini, G. Cavoto, R. Faccini, F. Ferrarotto, F. Ferroni, M. Gaspero, L. Li Gioi, M. A. Mazzoni, S. Morganti, M. Pierini, G. Piredda, F. Safai Tehrani, C. Voena, S. Christ, G. Wagner, R. Waldi, T. Adye, N. De Groot, B. Franek, N. I. Geddes, G. P. Gopal, E. O. Olaiya, S. Xella, R. Aleksan, S. Emery, A. Gaidot, S. F. Ganzhur, P.-F. Giraud, G. Hamel de Monchenault, W. Kozanecki, M. Langer, M. Legendre, G. W. London, B. Mayer, G. Schott, G. Vasseur, Ch. Yèche, M. Zito, M. V. Purohit, A. W. Weidemann, F. X. Yumiceva, D. Aston, R. Bartoldus, N. Berger, A. M. Boyarski, O. L. Buchmueller, M. R. Convery, M. Cristinziani, G. De Nardo, D. Dong, J. Dorfan, D. Dujmic, W. Dunwoodie, E. Elsen, R. C. Field, T. Glanzman, S. J. Gowdy, T. Hadig, V. Halyo, T. Hryn’ova, W. R. Innes, M. H. Kelsey, P. Kim, M. L. Kocian, D. W. G. S. Leith, J. Libby, S. Luitz, V. Luth, H. L. Lynch, H. Marsiske, R. Messner, D. R. Muller, C. P. O’Grady, V. E. Ozcan, A. Perazzo, M. Perl, S. Petrak, B. N. Ratcliff, A. Roodman, A. A. Salnikov, R. H. Schindler, J. Schwiening, G. Simi, A. Snyder, A. Soha, J. Stelzer, D. Su, M. K. Sullivan, J. Va’vra, S. R. Wagner, M. Weaver, A. J. Weinstein, W. J. Wisniewski, M. Wittgen, D. H. Wright, C. C. Young, P. R. Burchat, A. J. Edwards, T. I. Meyer, B. A. Petersen, C. Roat, S. Ahmed, M. S. Alam, J. Ernst, M. A. Saeed, M. Saleem, F. R. Wappler, W. Bugg, M. Krishnamurthy, S. M. Spanier, R. Eckmann, H. Kim, J. L. Ritchie, A. Satpathy, R. F. Schwitters, J. M. Izen, I. Kitayama, X. C. Lou, S. Ye, F. Bianchi, M. Bóna, F. Gallo, D. Gamba, C. Borean, L. Bosisio, F. Cossutti, G. Della Ricca, S. Dittongo, S. Grancagnolo, L. Lanceri, P. Poropat, L. Vitale, G. Vuagnin, R. S. Panvini, Sw. Banerjee, C. M. Brown, D. Fortin, P. Jackson, R. Kowalewski, J. M. Roney, H. R. Band, S. Dasu, M. Datta, A. M. Eichenbaum, J. J. Hollar, J. R. Johnson, P. E. Kutter, H. Li, R. Liu, F. Di Lodovico, A. Mihalyi, A. K. Mohapatra, Y. Pan, R. Prepost, S. J. Sekula, P. Tan, J. H. von Wimmersperg-Toeller, J. Wu, S. L. Wu, Z. Yu, H. Neal
Bibliographic record
VenuePhysical review. D. Particles, fields, gravitation, and cosmology/Physical review. D, Particles, fields, gravitation, and cosmology · 2004
Typearticle
Languagelv
FieldPhysics and Astronomy
TopicParticle physics theoretical and experimental studies
Canadian institutionsUniversité de MontréalUniversity of VictoriaMcGill UniversityUniversity of British Columbia
FundersSLAC National Accelerator LaboratoryHigh Energy PhysicsInstitut National de Physique Nucléaire et de Physique des ParticulesU.S. Department of EnergyInstitute of High Energy PhysicsAlfred P. Sloan FoundationNatural Sciences and Engineering Research Council of CanadaDeutsche ForschungsgemeinschaftIstituto Nazionale di Fisica NucleareNorges ForskningsrådCentre National de la Recherche ScientifiqueBundesministerium für Bildung und ForschungAlexander von Humboldt-StiftungNational Science Foundation
KeywordsPhysicsBranching fractionElectron–positron annihilationParticle physicsMesonB mesonEnergy (signal processing)Semileptonic decayElectronHadronNuclear physicsLeptonQuantum mechanics
Abstract
We report a measurement of the inclusive electron energy spectrum for semileptonic decays of B mesons in a data sample of 52 million $\ensuremath{\Upsilon}(4S)\ensuremath{\rightarrow}B\overline{B}$ decays collected with the BABAR detector at the PEP-II asymmetric-energy B-meson factory at SLAC. We determine the branching fraction, first, second, and third moments of the spectrum for lower cutoffs on the electron energy between 0.6 and 1.5 GeV. We measure the partial branching fraction to be $\mathcal{B}(\stackrel{\ensuremath{\rightarrow}}{B}\mathrm{Xe}\ensuremath{\nu}{,E}_{e}>0.6\mathrm{GeV})=[10.36\ifmmode\pm\else\textpm\fi{}0.06(\mathrm{stat}.)\ifmmode\pm\else\textpm\fi{}0.23(\mathrm{sys}.)]%.$
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: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.002
Threshold uncertainty score0.007
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 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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 head0.015
GPT teacher head0.276
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 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
Citations79
Published2004
Admission routes2
Has abstractyes