Phys. Rev. Lett.
76,
3898–3902
(1996)
Measurement of the Form Factors for B̅ 0→D*+ℓ-ν̅
J. E. Duboscq et al. (CLEO Collaboration)
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J. E. Duboscq1, R. Fulton1, D. Fujino1, K. K. Gan1, K. Honscheid1, H. Kagan1, R. Kass1, J. Lee1, M. Sung1, C. White1, R. Wanke1, A. Wolf1, M. M. Zoeller1, X. Fu2, B. Nemati2, S. J. Richichi2, W. R. Ross2, P. Skubic2, M. Wood2, M. Bishai3, J. Fast3, E. Gerndt3, J. W. Hinson3, T. Miao3, D. H. Miller3, M. Modesitt3, E. I. Shibata3, I. P. J. Shipsey3, P. N. Wang3, L. Gibbons4, S. D. Johnson4, Y. Kwon4, S. Roberts4, E. H. Thorndike4, C. P. Jessop5, K. Lingel5, H. Marsiske5, M. L. Perl5, S. F. Schaffner5, R. Wang5, T. E. Coan6, J. Dominick6, V. Fadeyev6, I. Korolkov6, M. Lambrecht6, S. Sanghera6, V. Shelkov6, R. Stroynowski6, I. Volobouev6, G. Wei6, M. Artuso7, A. Efimov7, M. Gao7, M. Goldberg7, D. He7, N. Horwitz7, S. Kopp7, G. C. Moneti7, R. Mountain7, Y. Mukhin7, S. Playfer7, T. Skwarnicki7, S. Stone7, X. Xing7, J. Bartelt8, S. E. Csorna8, V. Jain8, S. Marka8, D. Gibaut9, K. Kinoshita9, P. Pomianowski9, S. Schrenk9, B. Barish10, M. Chadha10, S. Chan10, G. Eigen10, J. S. Miller10, C. O'Grady10, M. Schmidtler10, J. Urheim10, A. J. Weinstein10, F. Würthwein10, D. M. Asner11, M. Athanas11, D. W. Bliss11, W. S. Brower11, G. Masek11, H. P. Paar11, J. Gronberg12, C. M. Korte12, R. Kutschke12, S. Menary12, R. J. Morrison12, S. Nakanishi12, H. N. Nelson12, T. K. Nelson12, C. Qiao12, J. D. Richman12, D. Roberts12, A. Ryd12, H. Tajima12, M. S. Witherell12, R. Balest13, K. Cho13, W. T. Ford13, M. Lohner13, H. Park13, P. Rankin13, J. Roy13, J. G. Smith13, J. P. Alexander14, C. Bebek14, B. E. Berger14, K. Berkelman14, K. Bloom14, D. G. Cassel14, H. A. Cho14, D. M. Coffman14, D. S. Crowcroft14, M. Dickson14, P. S. Drell14, D. J. Dumas14, R. Ehrlich14, R. Elia14, P. Gaidarev14, B. Gittelman14, S. W. Gray14, D. L. Hartill14, B. K. Heltsley14, C. D. Jones14, S. L. Jones14, J. Kandaswamy14, N. Katayama14, P. C. Kim14, D. L. Kreinick14, T. Lee14, Y. Liu14, G. S. Ludwig14, J. Masui14, J. Mevissen14, N. B. Mistry14, C. R. Ng14, E. Nordberg14, J. R. Patterson14, D. Peterson14, D. Riley14, A. Soffer14, C. Ward14, P. Avery15, A. Freyberger15, C. Prescott15, S. Yang15, J. Yelton15, G. Brandenburg16, R. A. Briere16, D. Cinabro16, T. Liu16, M. Saulnier16, R. Wilson16, H. Yamamoto16, T. E. Browder17, F. Li17, J. L. Rodriguez17, T. Bergfeld18, B. I. Eisenstein18, J. Ernst18, G. E. Gladding18, G. D. Gollin18, M. Palmer18, M. Selen18, J. J. Thaler18, K. W. Edwards19, K. W. McLean19, M. Ogg19, A. Bellerive20, D. I. Britton20, R. Janicek20, D. B. MacFarlane20, P. M. Patel20, B. Spaan20, A. J. Sadoff21, R. Ammar22, P. Baringer22, A. Bean22, D. Besson22, D. Coppage22, N. Copty22, R. Davis22, N. Hancock22, S. Kotov22, I. Kravchenko22, N. Kwak22, Y. Kubota23, M. Lattery23, J. K. Nelson23, S. Patton23, R. Poling23, T. Riehle23, V. Savinov23, M. S. Alam24, I. J. Kim24, Z. Ling24, A. H. Mahmood24, J. J. O'Neill24, H. Severini24, C. R. Sun24, S. Timm24, and F. Wappler24 (CLEO Collaboration)
1The Ohio State University, Columbus, Ohio 43210
2University of Oklahoma, Norman, Oklahoma 73019
3Purdue University, West Lafayette, Indiana 47907
4University of Rochester, Rochester, New York 14627
5Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309
6Southern Methodist University, Dallas, Texas 75275
7Syracuse University, Syracuse, New York 13244
8Vanderbilt University, Nashville, Tennessee 37235
9Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
10California Institute of Technology, Pasadena, California 91125
11University of California, San Diego, La Jolla, California 92093
12University of California, Santa Barbara, California 93106
13University of Colorado, Boulder, Colorado 80309-0390
14Cornell University, Ithaca, New York 14853
15University of Florida, Gainesville, Florida 32611
16Harvard University, Cambridge, Massachusetts 02138
17University of Hawaii at Manoa, Honolulu, Hawaii 96822
18University of Illinois, Champaign-Urbana, Illinois 61801
19Carleton University, Ottawa, Ontario K1S 5B6 and The Institute of Particle Physics, Canada
20McGill University, Montréal, Québec H3A 2T8 and The Institute of Particle Physics, Canada
21Ithaca College, Ithaca, New York 14850
22University of Kansas, Lawrence, Kansas 66045
23University of Minnesota, Minneapolis, Minnesota 55455
24State University of New York at Albany, Albany, New York 12222
Received 27 November 1995; published in the issue dated 20 May 1996
Using a sample of 2.6×106 ϒ(4S)→BB̅ events collected with the CLEO II detector at the Cornell Electron Storage Ring, we have measured the form factors for B̅ 0→D*+ℓ-ν̅ . We perform a three-parameter fit with the joint distribution of four kinematic variables to obtain the form-factor ratios R1 = 1.18±0.30±0.12 and R2 = 0.71±0.22±0.07, and the form-factor slope ρA12 = 0.91±0.15±0.06, which is closely related to the slope of the Isgur-Wise function. The form-factor ratios are consistent with predicted corrections to the heavy-quark symmetry limit R1 = R2 = 1.
© 1996 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevLett.76.3898
DOI:
10.1103/PhysRevLett.76.3898
PACS:
13.20.He, 12.39.Hg, 13.65.+i
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