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Title: Search for D{sup 0}- D{sup 0} Mixing

Abstract

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

Authors:
 [1];  [1];  [1];  [1];  [2];  [2];  [2];  [2];  [3];  [4]
  1. Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061 (United States)
  2. Wayne State University, Detroit, Michigan 48202 (United States)
  3. California Institute of Technology, Pasadena, California 91125 (United States)
  4. California Institute of Technology, Pasadena, California 91125 (United States) (and others)
Publication Date:
OSTI Identifier:
20216608
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 84; Journal Issue: 22; Other Information: PBD: 29 May 2000; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; D NEUTRAL MESONS; KAONS PLUS; PIONS MINUS; ELECTRON-POSITRON INTERACTIONS; PARTICLE DECAY; CP INVARIANCE; ANTIMESONS; EXPERIMENTAL DATA

Citation Formats

Godang, R., Kinoshita, K., Lai, I. C., Schrenk, S., Bonvicini, G., Cinabro, D., Perera, L. P., Zhou, G. J., Eigen, G., and Lipeles, E. Search for D{sup 0}- D{sup 0} Mixing. United States: N. p., 2000. Web. doi:10.1103/PhysRevLett.84.5038.
Godang, R., Kinoshita, K., Lai, I. C., Schrenk, S., Bonvicini, G., Cinabro, D., Perera, L. P., Zhou, G. J., Eigen, G., & Lipeles, E. Search for D{sup 0}- D{sup 0} Mixing. United States. doi:10.1103/PhysRevLett.84.5038.
Godang, R., Kinoshita, K., Lai, I. C., Schrenk, S., Bonvicini, G., Cinabro, D., Perera, L. P., Zhou, G. J., Eigen, G., and Lipeles, E. Mon . "Search for D{sup 0}- D{sup 0} Mixing". United States. doi:10.1103/PhysRevLett.84.5038.
@article{osti_20216608,
title = {Search for D{sup 0}- D{sup 0} Mixing},
author = {Godang, R. and Kinoshita, K. and Lai, I. C. and Schrenk, S. and Bonvicini, G. and Cinabro, D. and Perera, L. P. and Zhou, G. J. and Eigen, G. and Lipeles, E.},
abstractNote = {We have studied the ''wrong-sign'' process D{sup 0}{yields}K{sup +}{pi}{sup -} to search for D{sup 0}-D{sup 0} mixing. The data come from 9.0 fb{sup -1} of e{sup +}e{sup -} collisions at (sq root)(s){approx_equal}10 GeV recorded with the CLEO II.V detector. We measure the relative rate of the wrong-sign process D{sup 0}{yields}K{sup +}{pi}{sup -} to the Cabibbo-favored process D{sup 0}{yields}K{sup +}{pi}{sup -} to be R=(0.332{sup +0.063}{sub -0.065}{+-}0.040 )% . We study D{sup 0}{yields}K{sup +}{pi}{sup -} as a function of decay time to distinguish direct doubly Cabibbo-suppressed decay from D{sup 0}-D{sup 0} mixing. The amplitudes that describe D{sup 0}-D{sup 0} mixing, x{sup '} and y{sup '} , are consistent with zero. At the 95% C.L. and without assumptions concerning charge-parity (CP ) violating parameters, we find (1/2)x{sup '2}<0.041% and -5.8%<y{sup '}<1.0% . (c) 2000 The American Physical Society.},
doi = {10.1103/PhysRevLett.84.5038},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 22,
volume = 84,
place = {United States},
year = {2000},
month = {5}
}