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Title: Evidence for B - D s + K - - ν ¯ and search for B - D s * + K - - ν ¯

Abstract

We report measurements of the decays B -→D$$+\atop{s}$$K --$$\bar{v}$$ in a data sample containing 657×10 6B$$\bar{B}$$ pairs collected with the Belle detector at the KEKB asymmetric-energy e +e - collider. We observe a signal with a significance of 6σ for the combined Ds and Ds* modes and find the first evidence of the B -→D$$+\atop{s}$$K --v ℓ decay with a significance of 3.4σ. We measure the following branching fractions: B(B -→Ds -K --v ℓ)=(0.30±0.09(stat)$$+0.11\atop{-0.08}$$(syst))×10 -3 and B(B-→D$$*+\atop{s}$$ +K --v ℓ)=(0.59±0.12(stat)±0.15(syst))×10 -3 and set an upper limit B(B -→D$$+*\atop{s}$$ +K --v ℓ)<0.56×10 -3 at the 90% confidence level. We also present the first measurement of the D$$+\atop{s}$$K - invariant mass distribution in these decays, which is dominated by a prominent peak around 2.6 GeV/c 2.

Authors:
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Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
Sponsoring Org.:
USDOE
Contributing Org.:
The Belle Collaboration
OSTI Identifier:
1314426
Report Number(s):
PNNL-SA-92406
Journal ID: ISSN 1550-7998; 45392; KA2201020
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles, Fields, Gravitation and Cosmology
Additional Journal Information:
Journal Volume: 86; Journal Issue: 7; Journal ID: ISSN 1550-7998
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Environmental Molecular Sciences Laboratory

Citation Formats

Stypula, J., Rozanska, M., Adachi, I., Adamczyk, K., Aihara, H., Asner, D. M., Aushev, T., Bakich, A. M., Bhardwaj, V., Bhuyan, B., Bischofberger, M., Bondar, A., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Chang, M. -C., Chang, P., Chekelian, V., Chen, A., Chen, P., Cheon, B. G., Chistov, R., Cho, I. -S., Cho, K., Choi, Y., Dalseno, J., Danilov, M., Dingfelder, J., Doležal, Z., Drásal, Z., Drutskoy, A., Eidelman, S., Farhat, H., Fast, J. E., Gaur, V., Gabyshev, N., Gillard, R., Goh, Y. M., Golob, B., Haba, J., Hayasaka, K., Hayashii, H., Horii, Y., Hoshi, Y., Hou, W. -S., Hsiung, Y. B., Hyun, H. J., Iijima, T., Inami, K., Ishikawa, A., Itoh, R., Iwabuchi, M., Iwasaki, Y., Julius, T., Kang, J. H., Kapusta, P., Kawasaki, T., Kichimi, H., Kiesling, C., Kim, H. J., Kim, J. B., Kim, J. H., Kim, K. T., Kim, Y. J., Kinoshita, K., Ko, B. R., Kodyš, P., Korpar, S., Kouzes, R. T., Križan, P., Krokovny, P., Kuhr, T., Kumita, T., Kuzmin, A., Kwon, Y. -J., Lee, S. -H., Li, J., Li, Y., Libby, J., Liu, C., Liu, Y., Liu, Z. Q., Liventsev, D., Louvot, R., Miyabayashi, K., Miyata, H., Miyazaki, Y., Mizuk, R., Mohanty, G. B., Moll, A., Muramatsu, N., Nakano, E., Nakao, M., Natkaniec, Z., Ng, C., Nishida, S., Nishimura, K., Nitoh, O., Nozaki, T., Ogawa, S., Ohshima, T., Okuno, S., Olsen, S. L., Onuki, Y., Pakhlov, P., Pakhlova, G., Park, C. W., Park, H., Park, H. K., Pedlar, T. K., Pestotnik, R., Petrič, M., Piilonen, L. E., Ritter, M., Röhrken, M., Ryu, S., Sahoo, H., Sakai, Y., Sandilya, S., Santel, D., Sanuki, T., Sato, Y., Schneider, O., Schwanda, C., Senyo, K., Seon, O., Sevior, M. E., Shapkin, M., Shen, C. P., Shibata, T. -A., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Smerkol, P., Sohn, Y. -S., Sokolov, A., Solovieva, E., Stanič, S., Starič, M., Sumihama, M., Sumiyoshi, T., Teramoto, Y., Uchida, M., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Usov, Y., Vanhoefer, P., Varner, G., Varvell, K. E., Vorobyev, V., Wang, P., Wang, X. L., Watanabe, M., Watanabe, Y., Wiechczynski, J., Williams, K. M., Won, E., Yabsley, B. D., Yamamoto, H., Yamashita, Y., Zhang, Z. P., Zhilich, V., Zhulanov, V., and Zupanc, A. Evidence for B-→Ds+K-ℓ-ν¯ℓ and search for B-→Ds*+K-ℓ-ν¯ℓ. United States: N. p., 2012. Web. doi:10.1103/PhysRevD.86.072007.
Stypula, J., Rozanska, M., Adachi, I., Adamczyk, K., Aihara, H., Asner, D. M., Aushev, T., Bakich, A. M., Bhardwaj, V., Bhuyan, B., Bischofberger, M., Bondar, A., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Chang, M. -C., Chang, P., Chekelian, V., Chen, A., Chen, P., Cheon, B. G., Chistov, R., Cho, I. -S., Cho, K., Choi, Y., Dalseno, J., Danilov, M., Dingfelder, J., Doležal, Z., Drásal, Z., Drutskoy, A., Eidelman, S., Farhat, H., Fast, J. E., Gaur, V., Gabyshev, N., Gillard, R., Goh, Y. M., Golob, B., Haba, J., Hayasaka, K., Hayashii, H., Horii, Y., Hoshi, Y., Hou, W. -S., Hsiung, Y. B., Hyun, H. J., Iijima, T., Inami, K., Ishikawa, A., Itoh, R., Iwabuchi, M., Iwasaki, Y., Julius, T., Kang, J. H., Kapusta, P., Kawasaki, T., Kichimi, H., Kiesling, C., Kim, H. J., Kim, J. B., Kim, J. H., Kim, K. T., Kim, Y. J., Kinoshita, K., Ko, B. R., Kodyš, P., Korpar, S., Kouzes, R. T., Križan, P., Krokovny, P., Kuhr, T., Kumita, T., Kuzmin, A., Kwon, Y. -J., Lee, S. -H., Li, J., Li, Y., Libby, J., Liu, C., Liu, Y., Liu, Z. Q., Liventsev, D., Louvot, R., Miyabayashi, K., Miyata, H., Miyazaki, Y., Mizuk, R., Mohanty, G. B., Moll, A., Muramatsu, N., Nakano, E., Nakao, M., Natkaniec, Z., Ng, C., Nishida, S., Nishimura, K., Nitoh, O., Nozaki, T., Ogawa, S., Ohshima, T., Okuno, S., Olsen, S. L., Onuki, Y., Pakhlov, P., Pakhlova, G., Park, C. W., Park, H., Park, H. K., Pedlar, T. K., Pestotnik, R., Petrič, M., Piilonen, L. E., Ritter, M., Röhrken, M., Ryu, S., Sahoo, H., Sakai, Y., Sandilya, S., Santel, D., Sanuki, T., Sato, Y., Schneider, O., Schwanda, C., Senyo, K., Seon, O., Sevior, M. E., Shapkin, M., Shen, C. P., Shibata, T. -A., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Smerkol, P., Sohn, Y. -S., Sokolov, A., Solovieva, E., Stanič, S., Starič, M., Sumihama, M., Sumiyoshi, T., Teramoto, Y., Uchida, M., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Usov, Y., Vanhoefer, P., Varner, G., Varvell, K. E., Vorobyev, V., Wang, P., Wang, X. L., Watanabe, M., Watanabe, Y., Wiechczynski, J., Williams, K. M., Won, E., Yabsley, B. D., Yamamoto, H., Yamashita, Y., Zhang, Z. P., Zhilich, V., Zhulanov, V., & Zupanc, A. Evidence for B-→Ds+K-ℓ-ν¯ℓ and search for B-→Ds*+K-ℓ-ν¯ℓ. United States. https://doi.org/10.1103/PhysRevD.86.072007
Stypula, J., Rozanska, M., Adachi, I., Adamczyk, K., Aihara, H., Asner, D. M., Aushev, T., Bakich, A. M., Bhardwaj, V., Bhuyan, B., Bischofberger, M., Bondar, A., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Chang, M. -C., Chang, P., Chekelian, V., Chen, A., Chen, P., Cheon, B. G., Chistov, R., Cho, I. -S., Cho, K., Choi, Y., Dalseno, J., Danilov, M., Dingfelder, J., Doležal, Z., Drásal, Z., Drutskoy, A., Eidelman, S., Farhat, H., Fast, J. E., Gaur, V., Gabyshev, N., Gillard, R., Goh, Y. M., Golob, B., Haba, J., Hayasaka, K., Hayashii, H., Horii, Y., Hoshi, Y., Hou, W. -S., Hsiung, Y. B., Hyun, H. J., Iijima, T., Inami, K., Ishikawa, A., Itoh, R., Iwabuchi, M., Iwasaki, Y., Julius, T., Kang, J. H., Kapusta, P., Kawasaki, T., Kichimi, H., Kiesling, C., Kim, H. J., Kim, J. B., Kim, J. H., Kim, K. T., Kim, Y. J., Kinoshita, K., Ko, B. R., Kodyš, P., Korpar, S., Kouzes, R. T., Križan, P., Krokovny, P., Kuhr, T., Kumita, T., Kuzmin, A., Kwon, Y. -J., Lee, S. -H., Li, J., Li, Y., Libby, J., Liu, C., Liu, Y., Liu, Z. Q., Liventsev, D., Louvot, R., Miyabayashi, K., Miyata, H., Miyazaki, Y., Mizuk, R., Mohanty, G. B., Moll, A., Muramatsu, N., Nakano, E., Nakao, M., Natkaniec, Z., Ng, C., Nishida, S., Nishimura, K., Nitoh, O., Nozaki, T., Ogawa, S., Ohshima, T., Okuno, S., Olsen, S. L., Onuki, Y., Pakhlov, P., Pakhlova, G., Park, C. W., Park, H., Park, H. K., Pedlar, T. K., Pestotnik, R., Petrič, M., Piilonen, L. E., Ritter, M., Röhrken, M., Ryu, S., Sahoo, H., Sakai, Y., Sandilya, S., Santel, D., Sanuki, T., Sato, Y., Schneider, O., Schwanda, C., Senyo, K., Seon, O., Sevior, M. E., Shapkin, M., Shen, C. P., Shibata, T. -A., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Smerkol, P., Sohn, Y. -S., Sokolov, A., Solovieva, E., Stanič, S., Starič, M., Sumihama, M., Sumiyoshi, T., Teramoto, Y., Uchida, M., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Usov, Y., Vanhoefer, P., Varner, G., Varvell, K. E., Vorobyev, V., Wang, P., Wang, X. L., Watanabe, M., Watanabe, Y., Wiechczynski, J., Williams, K. M., Won, E., Yabsley, B. D., Yamamoto, H., Yamashita, Y., Zhang, Z. P., Zhilich, V., Zhulanov, V., and Zupanc, A. Mon . "Evidence for B-→Ds+K-ℓ-ν¯ℓ and search for B-→Ds*+K-ℓ-ν¯ℓ". United States. https://doi.org/10.1103/PhysRevD.86.072007.
@article{osti_1314426,
title = {Evidence for B-→Ds+K-ℓ-ν¯ℓ and search for B-→Ds*+K-ℓ-ν¯ℓ},
author = {Stypula, J. and Rozanska, M. and Adachi, I. and Adamczyk, K. and Aihara, H. and Asner, D. M. and Aushev, T. and Bakich, A. M. and Bhardwaj, V. and Bhuyan, B. and Bischofberger, M. and Bondar, A. and Bonvicini, G. and Bozek, A. and Bračko, M. and Browder, T. E. and Chang, M. -C. and Chang, P. and Chekelian, V. and Chen, A. and Chen, P. and Cheon, B. G. and Chistov, R. and Cho, I. -S. and Cho, K. and Choi, Y. and Dalseno, J. and Danilov, M. and Dingfelder, J. and Doležal, Z. and Drásal, Z. and Drutskoy, A. and Eidelman, S. and Farhat, H. and Fast, J. E. and Gaur, V. and Gabyshev, N. and Gillard, R. and Goh, Y. M. and Golob, B. and Haba, J. and Hayasaka, K. and Hayashii, H. and Horii, Y. and Hoshi, Y. and Hou, W. -S. and Hsiung, Y. B. and Hyun, H. J. and Iijima, T. and Inami, K. and Ishikawa, A. and Itoh, R. and Iwabuchi, M. and Iwasaki, Y. and Julius, T. and Kang, J. H. and Kapusta, P. and Kawasaki, T. and Kichimi, H. and Kiesling, C. and Kim, H. J. and Kim, J. B. and Kim, J. H. and Kim, K. T. and Kim, Y. J. and Kinoshita, K. and Ko, B. R. and Kodyš, P. and Korpar, S. and Kouzes, R. T. and Križan, P. and Krokovny, P. and Kuhr, T. and Kumita, T. and Kuzmin, A. and Kwon, Y. -J. and Lee, S. -H. and Li, J. and Li, Y. and Libby, J. and Liu, C. and Liu, Y. and Liu, Z. Q. and Liventsev, D. and Louvot, R. and Miyabayashi, K. and Miyata, H. and Miyazaki, Y. and Mizuk, R. and Mohanty, G. B. and Moll, A. and Muramatsu, N. and Nakano, E. and Nakao, M. and Natkaniec, Z. and Ng, C. and Nishida, S. and Nishimura, K. and Nitoh, O. and Nozaki, T. and Ogawa, S. and Ohshima, T. and Okuno, S. and Olsen, S. L. and Onuki, Y. and Pakhlov, P. and Pakhlova, G. and Park, C. W. and Park, H. and Park, H. K. and Pedlar, T. K. and Pestotnik, R. and Petrič, M. and Piilonen, L. E. and Ritter, M. and Röhrken, M. and Ryu, S. and Sahoo, H. and Sakai, Y. and Sandilya, S. and Santel, D. and Sanuki, T. and Sato, Y. and Schneider, O. and Schwanda, C. and Senyo, K. and Seon, O. and Sevior, M. E. and Shapkin, M. and Shen, C. P. and Shibata, T. -A. and Shiu, J. -G. and Shwartz, B. and Sibidanov, A. and Simon, F. and Smerkol, P. and Sohn, Y. -S. and Sokolov, A. and Solovieva, E. and Stanič, S. and Starič, M. and Sumihama, M. and Sumiyoshi, T. and Teramoto, Y. and Uchida, M. and Uglov, T. and Unno, Y. and Uno, S. and Urquijo, P. and Usov, Y. and Vanhoefer, P. and Varner, G. and Varvell, K. E. and Vorobyev, V. and Wang, P. and Wang, X. L. and Watanabe, M. and Watanabe, Y. and Wiechczynski, J. and Williams, K. M. and Won, E. and Yabsley, B. D. and Yamamoto, H. and Yamashita, Y. and Zhang, Z. P. and Zhilich, V. and Zhulanov, V. and Zupanc, A.},
abstractNote = {We report measurements of the decays B-→D$+\atop{s}$K-ℓ-$\bar{v}$ℓin a data sample containing 657×106B$\bar{B}$ pairs collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. We observe a signal with a significance of 6σ for the combined Ds and Ds* modes and find the first evidence of the B-→D$+\atop{s}$K-ℓ-v ℓ decay with a significance of 3.4σ. We measure the following branching fractions: B(B-→Ds-K-ℓ-v ℓ)=(0.30±0.09(stat)$+0.11\atop{-0.08}$(syst))×10-3 and B(B-→D$*+\atop{s}$+K-ℓ-v ℓ)=(0.59±0.12(stat)±0.15(syst))×10-3 and set an upper limit B(B-→D$+*\atop{s}$+K-ℓ-v ℓ)<0.56×10-3 at the 90% confidence level. We also present the first measurement of the D$+\atop{s}$K- invariant mass distribution in these decays, which is dominated by a prominent peak around 2.6 GeV/c2.},
doi = {10.1103/PhysRevD.86.072007},
url = {https://www.osti.gov/biblio/1314426}, journal = {Physical Review. D, Particles, Fields, Gravitation and Cosmology},
issn = {1550-7998},
number = 7,
volume = 86,
place = {United States},
year = {2012},
month = {10}
}