Title

Studies of the Cabibbo-suppressed decays D+ → π0+v and D+ → ηe+ve

Authors

J. Bartelt, Vanderbilt University
S. E. Csorna, Vanderbilt University
V. Jain, Vanderbilt University
S. Marka, Vanderbilt University
A. Freyberger, Virginia Polytechnic Institute and State University
R. Godang, Virginia Polytechnic Institute and State University
K. Kinoshita, Virginia Polytechnic Institute and State University
I. C. Lai, Virginia Polytechnic Institute and State University
P. Pomianowski, Virginia Polytechnic Institute and State University
S. Schrenk, Virginia Polytechnic Institute and State University
G. Bonvicini, Wayne State University
D. Cinabro, Wayne State University
R. Greene, Wayne State University
L. P. Perera, Wayne State University
G. J. Zhou, Wayne State University
B. Barish, California Institute of Technology
M. Chadha, California Institute of Technology
S. Chan, California Institute of Technology
G. Eigen, California Institute of Technology
J. S. Miller, California Institute of Technology
C. O'Grady, California Institute of Technology
M. Schmidtler, California Institute of Technology
J. Urheim, California Institute of Technology
A. J. Weinstein, California Institute of Technology
F. Würthwein, California Institute of Technology
D. M. Asner, University of California, San Diego
D. W. Bliss, University of California, San Diego
W. S. Brower, University of California, San Diego
G. Masek, University of California, San Diego
H. P. Paar, University of California, San Diego
V. Sharma, University of California, San Diego
J. Gronberg, University of California, Santa Barbara
T. S. Hill, University of California, Santa Barbara

Document Type

Article

Publication Date

7-24-1997

Abstract

Using 4.8 fb of data taken with the CLEO II detector, the branching fraction for the Cabibbo suppressed decay D → π ℓ v measured relative to the Cabibbo favored decay D → K ̄ℓ v is found to be 0.046 ± 0.014 ± 0.017. Using V and V from unitarity constraints, we determine |f (0) / f (0)| = 0.9 ± 0.3 ± 0.3 We also present a 90% confidence level upper limit for the branching ratio of the decay D → ηe v relative to that for D → e v of 1.5. © 1997 Published by Elsevier Science B.V. -1 + 0 + + 0 + π K 2 + + + 0 + cs cd + + e e

Publication Name

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

Volume Number

405

First Page

373

Last Page

378

Issue Number

3-4

DOI

10.1016/s0370-2693(97)00649-7

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