Measurement of B(D+s → μ+νμ)/B(D+s → φμ+νμ) and determination of the decay constant fDs

K. Kodama*, S. Torikai, N. Ushida, A. Mokhtarani, V. S. Paolone, J. T. Volk, J. O. Wilcox, P. M. Yager, R. M. Edelstein, A. P. Freyberger, D. B. Gibaut, R. J. Lipton, W. R. Nichols, D. M. Potter, J. S. Russ, C. Zhang, Y. Zhang, H. I. Jang, J. Y. Kim, B. R. BallerR. J. Stefanski, K. Nakazawa, S. H. Chung, M. S. Park, I. G. Park, J. S. Song, C. S. Yoon, M. Aryal, N. W. Reay, R. A. Sidwell, N. R. Stanton, S. Yoshida, M. Chikawa, T. Hara, S. Aoki, K. Hoshino, M. Kobayashi, M. Komatsu, M. Miyanishi, M. Nakamura, S. Nakanishi, K. Niwa, M. Nomura, K. Okada, H. Tajima, K. Teraoka, J. M. Dunlea, S. G. Frederiksen, S. Kuramata, B. G. Lundberg, G. A. Oleynik, K. Reibel, G. R. Kalbfleisch, P. Skubic, J. M. Snow, S. E. Willis, K. Nakamura, T. Okusawa, T. Yoshida, H. Okabe, J. Yokota, N. Ihara, M. Kazuno, T. Koya, E. Niu, S. Ogawa, H. Shibuya, S. Watanabe, N. Yasuda, K. Ehara, K. Horie, Y. Sato, K. Suzuki, I. Tezuka

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

33 Scopus citations

Abstract

We have observed 23.2 ± 6.0+1.0-0.9 purely-leptonic decays of D+S → μ+νμ from a sample of muonic one prong decay events detected in the emulsion target of Fermilab experiment E653. Using the D+S → φμ+νμ yield measured previously in this experiment, we obtain B(D+S → μ+νμ)/B(D+S → φμ+νμ) = 0.16 ± 0.06 ± 0.03. In addition, we extract the decay constant fDS = 194 ± 35 ± 20 ± 14 MeV.

Original languageEnglish
Pages (from-to)299-304
Number of pages6
JournalPhysics Letters B
Volume382
Issue number3
DOIs
StatePublished - 1996/08/08

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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