Phys. Rev. D
76,
012007
(2007)
[22 pages]
Study of exclusive charmless semileptonic B decays and extraction of |Vub| at CLEO
D. M. Asner et al. CLEO Collaboration
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D. M. Asner1, K. W. Edwards1, R. A. Briere2, T. Ferguson2, G. Tatishvili2, H. Vogel2, M. E. Watkins2, J. L. Rosner3, N. E. Adam4, J. P. Alexander4, D. G. Cassel4, J. E. Duboscq4, R. Ehrlich4, L. Fields4, L. Gibbons4, R. Gray4, S. W. Gray4, D. L. Hartill4, B. K. Heltsley4, D. Hertz4, C. D. Jones4, J. Kandaswamy4, D. L. Kreinick4, V. E. Kuznetsov4, H. Mahlke-Krüger4, T. O. Meyer4, P. U. E. Onyisi4, J. R. Patterson4, D. Peterson4, J. Pivarski4, D. Riley4, A. Ryd4, A. J. Sadoff4, H. Schwarthoff4, X. Shi4, S. Stroiney4, W. M. Sun4, T. Wilksen4, M. Weinberger4, S. B. Athar5, R. Patel5, V. Potlia5, J. Yelton5, P. Rubin6, C. Cawlfield7, B. I. Eisenstein7, I. Karliner7, D. Kim7, N. Lowrey7, P. Naik7, M. Selen7, E. J. White7, J. Wiss7, R. E. Mitchell8, M. R. Shepherd8, D. Besson9, T. K. Pedlar10, D. Cronin-Hennessy11, K. Y. Gao11, J. Hietala11, Y. Kubota11, T. Klein11, B. W. Lang11, R. Poling11, A. W. Scott11, A. Smith11, P. Zweber11, S. Dobbs12, Z. Metreveli12, K. K. Seth12, A. Tomaradze12, J. Ernst13, K. M. Ecklund14, H. Severini15, W. Love16, V. Savinov16, O. Aquines17, Z. Li17, A. Lopez17, S. Mehrabyan17, H. Mendez17, J. Ramirez17, G. S. Huang18, D. H. Miller18, V. Pavlunin18, B. Sanghi18, I. P. J. Shipsey18, B. Xin18, G. S. Adams19, M. Anderson19, J. P. Cummings19, I. Danko19, D. Hu19, B. Moziak19, J. Napolitano19, Q. He20, J. Insler20, H. Muramatsu20, C. S. Park20, E. H. Thorndike20, F. Yang20, T. E. Coan21, Y. S. Gao21, M. Artuso22, S. Blusk22, J. Butt22, J. Li22, N. Menaa22, R. Mountain22, S. Nisar22, K. Randrianarivony22, R. Sia22, T. Skwarnicki22, S. Stone22, J. C. Wang22, K. Zhang22, G. Bonvicini23, D. Cinabro23, M. Dubrovin23, and A. Lincoln23 (CLEO Collaboration)
1Carleton University, Ottawa, Ontario, Canada K1S 5B6
2Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
3Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA
4Cornell University, Ithaca, New York 14853, USA
5University of Florida, Gainesville, Florida 32611, USA
6George Mason University, Fairfax, Virginia 22030, USA
7University of Illinois, Urbana-Champaign, Illinois 61801, USA
8Indiana University, Bloomington, Indiana 47405, USA
9University of Kansas, Lawrence, Kansas 66045, USA
10Luther College, Decorah, Iowa 52101, USA
11University of Minnesota, Minneapolis, Minnesota 55455, USA
12Northwestern University, Evanston, Illinois 60208, USA
13State University of New York at Albany, Albany, New York 12222, USA
14State University of New York at Buffalo, Buffalo, New York 14260, USA
15University of Oklahoma, Norman, Oklahoma 73019, USA
16University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
17University of Puerto Rico, Mayaguez, Puerto Rico 00681
18Purdue University, West Lafayette, Indiana 47907, USA
19Rensselaer Polytechnic Institute, Troy, New York 12180
20University of Rochester, Rochester, New York 14627, USA
21Southern Methodist University, Dallas, Texas 75275, USA
22Syracuse University, Syracuse, New York 13244, USA
23Wayne State University, Detroit, Michigan 48202, USA
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Publisher's Note
Received 23 March 2007; published 31 July 2007; publisher error corrected 6 August 2007
We have studied semileptonic B decay to the exclusive charmless states π, ρ/ω, η and η′ using the full 15.5 fb-1 CLEO Υ(4S) sample, with measurements performed in subregions of phase space to minimize dependence on a priori knowledge of the form factors involved. We find total branching fractions B(B0→π-ℓ+ν)=(1.37±0.15stat±0.11sys)×10-4 and B(B0→ρ-ℓ+ν)=(2.93±0.37stat±0.37sys)×10-4. We find evidence for B+→η′ℓ+ν, with B(B+→η′ℓ+ν)=(2.66±±0.80stat±0.56sys)×10-4 and 1.20×10-4<B(B+→η′ℓ+ν)<4.46×10-4 (90% CL). We also limit B(B+→ηℓ+ν)<1.01×10-4 (90% CL). By combining our B→πℓν information with unquenched lattice calculations, we find |Vub|=(3.6±0.4stat±0.2sys-0.4thy+0.6)×10-3.
© 2007 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevD.76.012007
DOI:
10.1103/PhysRevD.76.012007
PACS:
12.15.Hh, 13.25.Hw, 13.30.Ce
See Also
Publisher's Note:
D. M. Asner et al. CLEO Collaboration,
Publisher’s Note: Study of exclusive charmless semileptonic B decays and extraction of |Vub| at CLEO [Phys. Rev. D 76, 012007 (2007)],
Phys. Rev. D 76, 039901 (2007).
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