Title

Search for D0- D⊭0mixing

Authors

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
S. Schrenk, Virginia Polytechnic Institute and State University
G. Bonvicini, Wayne State University
D. Cinabro, Wayne State University
L. P. Perera, Wayne State University
G. J. Zhou, Wayne State University
G. Eigen, California Institute of Technology
E. Lipeles, California Institute of Technology
M. Schmidtler, California Institute of Technology
A. Shapiro, California Institute of Technology
W. M. Sun, California Institute of Technology
A. J. Weinstein, California Institute of Technology
F. Würthwein, California Institute of Technology
D. E. Jaffe, University of California, San Diego
G. Masek, University of California, San Diego
H. P. Paar, University of California, San Diego
E. M. Potter, University of California, San Diego
S. Prell, University of California, San Diego
V. Sharma, University of California, San Diego
D. M. Asner, University of California, Santa Barbara
A. Eppich, University of California, Santa Barbara
J. Gronberg, University of California, Santa Barbara
T. S. Hill, University of California, Santa Barbara
C. M. Korte, University of California, Santa Barbara
R. Kutschke, University of California, Santa Barbara
D. J. Lange, University of California, Santa Barbara
R. J. Morrison, University of California, Santa Barbara
H. N. Nelson, University of California, Santa Barbara
C. Qiao, University of California, Santa Barbara
A. Ryd, University of California, Santa Barbara
H. Tajima, University of California, Santa Barbara

Document Type

Article

Publication Date

1-1-2000

Abstract

We have studied the “wrong-sign” process D → K π to search for D - ⊯D mixing. The data come from 9.0fb of e e collisions at ⊡ ≈ 10GeV recorded with the CLEO II.V detector. We measure the relative rate of the wrong-sign process D → K π to the Cabibbo-favored process ⊯D → K π to be R=(0.332 α 0.040)%. We study D → K π as a function of decay time to distinguish direct doubly Cabibbo-suppressed decay from D - ⊯D mixing. The amplitudes that describe D - ⊯D mixing, x′ and y′, are consistent with zero. At the 95% C.L. and without assumptions concerning charge-parity (CP) violating parameters, we find (1/2)x′ < 0.041% and -5.8%< y′ < 1.0%. © 2000 The American Physical Society. 0 + - 0 0 -1 + - 0 + - 0 + - +0.063 0 + - 0 0 0 0 2 -0.065

Publication Name

Physical Review Letters

Volume Number

84

First Page

5038

Last Page

5042

Issue Number

22

DOI

10.1103/PhysRevLett.84.5038

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