| Title: |
Measurement of the B0→π-ℓ+ν and B+→η(′)ℓ+ν branching fractions, the B0→π-ℓ+ν and B+→ηℓ+ν form-factor shapes, and determination of |Vub |
| Authors: |
del Amo Sanchez, P; Lees, JP; Poireau, V; Prencipe, E; Tisserand, V; Tico, J Garra; Grauges, E; Martinelli, M; Milanes, DA; Palano, A; Pappagallo, M; Eigen, G; Stugu, B; Sun, L; Brown, DN; Kerth, LT; Kolomensky, Yu G; Lynch, G; Osipenkov, IL; Koch, H; Schroeder, T; Asgeirsson, DJ; Hearty, C; Mattison, TS; McKenna, JA; Khan, A; Randle-Conde, A; Blinov, VE; Buzykaev, AR; Druzhinin, VP; Golubev, VB; Kravchenko, EA; Onuchin, AP; Serednyakov, SI; Skovpen, Yu I; Solodov, EP; Todyshev, K Yu; Yushkov, AN; Bondioli, M; Curry, S; Kirkby, D; Lankford, AJ; Mandelkern, M; Martin, EC; Stoker, DP; Atmacan, H; Gary, JW; Liu, F; Long, O; Vitug, GM; Campagnari, C; Hong, TM; Kovalskyi, D; Richman, JD; West, C; Eisner, AM; Heusch, CA; Kroseberg, J; Lockman, WS; Martinez, AJ; Schalk, T; Schumm, BA; Seiden, A; Winstrom, LO; Cheng, CH; Doll, DA; Echenard, B; Hitlin, DG; Ongmongkolkul, P; Porter, FC; Rakitin, AY; Andreassen, R; Dubrovin, MS; Mancinelli, G; Meadows, BT; Sokoloff, MD; Bloom, PC; Ford, WT; Gaz, A; Nagel, M; Nauenberg, U; Smith, JG; Wagner, SR; Ayad, R; Toki, WH; Jasper, H; Karbach, TM; Petzold, A; Spaan, B; Kobel, MJ; Schubert, KR; Schwierz, R; Bernard, D; Verderi, M; Clark, PJ; Playfer, S; Watson, JE; Andreotti, M; Bettoni, D; Bozzi, C |
| Source: |
Physical Review D, vol 83, iss 5 |
| Publisher Information: |
eScholarship, University of California |
| Publication Year: |
2011 |
| Collection: |
University of California: eScholarship |
| Subject Terms: |
Astronomical and Space Sciences; Atomic; Molecular; Nuclear; Particle and Plasma Physics; Quantum Physics; Nuclear & Particles Physics |
| Description: |
We report the results of a study of the exclusive charmless semileptonic decays, B+→η(′)ℓ+ν and B0→π-ℓ+ν, undertaken with approximately 464×106 BB̄ pairs collected at the Υ(4S) resonance with the BABAR detector. The analysis uses events in which the signal B decays are reconstructed with a loose neutrino reconstruction technique. We obtain partial branching fractions for B+→ηℓ+ν and B0→π-ℓ+ν decays in three and 12 bins of q2, respectively, from which we extract the f+(q2) form-factor shapes and the total branching fractions B(B+→ηℓ +ν)=(0.36±0.05stat±0.04 syst)×10-4 and B(B0→π -ℓ+ν)=(1.42±0.05stat±0. 07syst)×10-4. We also measure B(B +→η′ℓ+ν)=(0.24±0. 08stat±0.03syst)×10-4. We obtain values for the magnitude of the CKM matrix element |Vub| using three different QCD calculations. © 2011 American Physical Society. |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
unknown |
| Relation: |
qt5hg324z5; https://escholarship.org/uc/item/5hg324z5; https://escholarship.org/content/qt5hg324z5/qt5hg324z5.pdf |
| DOI: |
10.1103/physrevd.83.052011 |
| Availability: |
https://escholarship.org/uc/item/5hg324z5; https://escholarship.org/content/qt5hg324z5/qt5hg324z5.pdf; https://doi.org/10.1103/physrevd.83.052011 |
| Rights: |
CC-BY |
| Accession Number: |
edsbas.5ED1ECF5 |
| Database: |
BASE |