Cabibbo-suppressed decays of D+ → π+π 0, K+0,K+π0

K. Arms, E. Eckhart, K. K. Gan, C. Gwon, K. Honscheid, R. Kass, H. Severini, P. Skubic, S. A. Dytman, J. A. Mueller, S. Nam, V. Savinov, G. S. Huang, J. Lee, D. H. Miller, V. Pavlunin, B. Sanghi, E. I. Shibata, I. P.J. Shipsey, D. Cronin-HennessyC. S. Park, W. Park, J. B. Thayer, E. H. Thorndike, T. E. Coan, Y. S. Gao, F. Liu, R. Stroynowski, M. Artuso, C. Boulahouache, S. Blusk, E. Dambasuren, O. Dorjkhaidav, R. Mountain, H. Muramatsu, R. Nandakumar, T. Skwarnicki, S. Stone, J. C. Wang, A. H. Mahmood, S. E. Csorna, I. Danko, G. Bonvicini, D. Cinabro, M. Dubrovin, A. Bornheim, E. Lipeles, S. P. Pappas, Y. Kubota, R. Poling

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14 Scopus citations


Using a 13.7 fb-1 data sample collected with the CLEO II and II.V detectors, we report new branching fraction measurements for two Cabibbo-suppressed decay modes of the D+ meson: B(D+→ π+π0) = (1.31±0.17±0.09±0.09) ×10-3 and B(D+→ K+0) = (5.24±0.43±0.20±0.34)×10-3 which are significant improvements over past measurements. The errors reflect statistical and systematical uncertainties as well as the uncertainty in the absolute D+ branching fraction scale. We also set the first 90% confidence level upper limit on the branching fraction of the doubly Cabibbo-suppressed decay mode B(D+ → K+π 0)<4.2×10-4.

Original languageEnglish (US)
Article number071102
JournalPhysical Review D
Issue number7
StatePublished - Apr 6 2004

Bibliographical note

Funding Information:
This work was financially supported by the program from National Natural Science Foundation of China (No. 41977332 , 41773117 , 91644102 , 91543116 ), the Key Research and Development Program of Shaanxi Province ( 2018-ZDXM3-01 ), and Research Grant Council of The Hong Kong Special Administrative Region China, Theme-Based Research Scheme ( T24-504/17-N ). Jianjun Li also acknowledged the support of the Youth Innovation Promotion Association CAS (No. 2020407 ).


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